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Bousquet, Philippe, Christèle Artz i Pierre Canal. "Traitement des dents ankylosées par corticotomie partielle : l’Orthodontic Bone Stretching. Étude préliminaire". L'Orthodontie Française 84, nr 4 (27.11.2013): 333–41. http://dx.doi.org/10.1051/orthodfr/2013067.
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Les dents antérieures ankylosées entraînent une infraclusion et un déficit esthétique important. Après une revue des techniques utilisées pour replacer ces dents sur l’arcade, cet article décrit une nouvelle technique permettant de rétablir l’occlusion et l’esthétique, ou de préparer le cas à un traitement prothétique ou implantaire, l’Orthodontic Bone Stretching (OBS). Cette technique associe corticotomie partielle et traitement orthodontique et permet un étirement osseux. Après 8 à 12 semaines d’application des forces, les dents ankylosées sont repositionnées en occlusion ou, en cas d’extraction, la crête osseuse est à un niveau compatible avec une réalisation prothétique ou implantaire. La technique d’OBS pourrait être adaptée aux implants en infraclusion, ou à l’augmentation verticale des crêtes atrophiées.
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Di Donna, Edouard, Yaelle Grange, Fanny De Raemy, Loïc Mahé Keller i Alexandre Perez. "Préservation alvéolaire post-extraction à l’aide d’allogreffe (Maxgraft®) et réhabilitation prothétique fixe totale sur implants". SWISS DENTAL JOURNAL SSO – Science and Clinical Topics 132, nr 4 (4.04.2022): 249–57. http://dx.doi.org/10.61872/sdj-2022-04-02.
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Une femme de 69 ans a consulté l’Unité de chirurgie orale et d’implantologie des Hôpitaux Universitaires de Genève avec pour plainte principale des difficultés de mastication, une gêne esthétique et une bouche sèche. La patiente avait une sialadénite chronique non spécifique accompagnée de xérostomie. Elle portait une prothèse totale stabilisée sur deux implants interforaminaux et présentait de multiples caries des dents maxillaires res- tantes. Les objectifs du traitement étaient de réhabiliter la fonction masticatoire avec une solution prothétique fixe totale sur implants, en mini- misant au maxillaire la complexité chirurgicale, les morbidités post-opératoires et le nombre d’interventions à l’aide d’une technique de préservation de la crête alvéolaire post-extraction. Cette technique simple consiste à remplir l’alvéole post-extraction à l’aide d’un biomatériau/substitut osseux afin d’atténuer la perte volumétrique des crêtes alvéolaires liée à la résorption osseuse qui suit la perte des dents. Dans ce cas, la pose d’implants maxillaires a pu être réalisée avec une séquence de base sans augmentation osseuse, ce qui a réduit la morbidité, le temps de traitement et les coûts par rapport à la reconstruction de la mandibule édentée et atrophiée. En résumé, la préservation des crêtes alvéolaires post-extraction est une option thérapeutique prévisible qui pourrait être envisagée dans un contexte d’extraction multiple afin de limiter la complexité du traitement implantaire.
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Charrier, Jean-Baptiste, i Nathan Moreau. "Corrections volumétriques du visage par implants en titane microporeux". L'Orthodontie Française 87, nr 3 (wrzesień 2016): 295–300. http://dx.doi.org/10.1051/orthodfr/2016027.
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Introduction : La symétrie faciale a longtemps été un objectif majeur de la chirurgie orthognathique. Les patients présentant une asymétrie faciale prononcée souhaitent retrouver une occlusion fonctionnelle, mais également améliorer leur esthétique faciale. À ce titre, différentes thérapeutiques chirurgicales ont été proposées pour permettre des corrections volumétriques du visage. Matériels et méthodes : À travers un cas clinique et une revue de la littérature, cet article explore l’utilisation d’implants alloplastiques en titane microporeux dans les corrections volumétriques du visage. Résultats : Il n’existe à ce jour que peu de données dans la littérature relatives à l’utilisation des implants alloplastiques en titane microporeux pour les corrections volumétriques du visage, ces implants étant principalement utilisés dans la reconstruction cranio-faciale de défauts osseux post-traumatiques ou post-chirurgicaux. Discussion : Les avantages et inconvénients respectifs de ces implants sont discutés, ainsi que l’intérêt de cette technique chirurgicale en pratique de chirurgie orthognathique.
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Cuevas, Paola. "L'expansion maxillaire avec ancrage osseuxchez l'adulte : description et cas clinique". Revue d'Orthopédie Dento-Faciale 56, nr 4 (grudzień 2022): 381–94. http://dx.doi.org/10.1051/odf/2022043.
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L'objectif est de présenter dans un premier temps l'expansion maxillaire par ancrage osseux en décrivant trois dispositifs puis dans un deuxième temps, de montrer un cas clinique avec un traitement sans chirurgie d'un patient de 18 ans présentant une insuffisance maxillaire transversale et postéro-antérieure et une infraclusion antérieure. Le patient fût traité par disjonction rapide inter-maxillaire à appui dento-squelettique, traction postéro-antérieure du maxillaire et multiattaches. L'ancrage squelettique a permis une correction de l'insuffisance maxillaire, de l'occlusion inversée et de l'infraclusion. Les implants d'ancrage ont permis d'éviter les effets secondaires d'un ancrage dentaire, de libérer d'autres zones de résistances et ont favorisé une ventilation nasale. Pour conclure, l'expansion rapide sur mini-implants peut être aujourd'hui une alternative à la disjonction assistée chirurgicalement chez le jeune adulte.
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Melsen, Birte, i Michel Dalstra. "L’ancrage squelettique au passé, présent et futur". L'Orthodontie Française 88, nr 1 (23.02.2017): 35–44. http://dx.doi.org/10.1051/orthodfr/2016052.
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Introduction : Les ancrages squelettiques n’ont pas été développés en tant qu’alternative aux ancrages existants habituellement utilisés. Le premier ancrage squelettique était simplement une ligature passée à travers un trou au niveau de la crête infra-zygomatique. Cette technique a été remplacée par l’utilisation de vis chirurgicales et finalement par celle de mini-vis d’ancrage temporaire (TADs), optimisées au niveau du dessin de la forme et par le choix du matériau utilisé. La tête de ces mini-vis en forme d’attache permet une utilisation comme ancrage indirect, mais ne doit pas être un moyen de contrer une perte de contrôle résultant d’un système de forces mal planifié ou d’une insuffisance de coopération. Les ancrages squelettiques doivent s’intégrer à une biomécanique adéquate, pour réaliser des traitements qui n’auraient pu l’être avant l’avènement de ces ancrages osseux. Matériel et méthode : Le but de cette étude est de tester l’hypothèse selon laquelle les ancrages squelettiques permettent de maintenir la densité osseuse, la hauteur et la largeur des procès alvéolaires dans les sites d’extraction, et de prévenir ainsi l’atrophie osseuse habituellement observée. Résultats : Pour des patients adultes avec des dentures dégénérescentes, l’utilisation des ancrages squelettiques va permettre non seulement des déplacements dentaires lorsqu’il n’y a aucune unité d’ancrage, mais aussi le redéveloppement ou la maintenance d’un os alvéolaire atrophique. Les notions élémentaires permettant l’usage optimal des ancrages squelettiques correspondent à l’utilisation d’une ligne de forces bien définie et établie pour un mouvement dentaire désiré ainsi qu’à un système de forces nécessaire et construit avec l’aide d’un ancrage squelettique soit direct ou indirect. Après une période durant laquelle les implants ostéointégrés ont été utilisés comme ancrage pour le déplacement dentaire et la conservation du capital osseux, il est maintenant admis que les mini-vis puissent servir d’ancrage pour des déplacements squelettiques évitant ainsi la mise en charge dentaire.
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BERT, Marc. "Intégration neurophysiologique d’un implant dentaire". Actualités Odonto-Stomatologiques, nr 290 (czerwiec 2018): 4. http://dx.doi.org/10.1051/aos/2018044.
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La majorité des publications actuelles traitant de l’occlusion des prothèses sur implants propose des « recettes » (mise en sous-occlusion, fonction de groupe systématique) issues d’une méconnaissance totale des bases fondamentales de l’occlusion et de l’implantologie. Le rôle du récepteur desmodontal en tant que mécanorécepteur permettant la modulation de la contraction musculaire est maintenant bien connu. L’implant, ankylosé dans l’os, ne dispose pas de ce récepteur sensitif, branche du nerf trijumeau. Les fibres de petit calibre, peu ou pas myélinisées et retrouvées autour des implants, sont des éléments du système nerveux autonome permettant la régulation du remaniement osseux à partir des pressions ressenties par les ostéocytes, véritables « mécanosenseurs » de l’os, mais incapables de transmettre une information proprioceptive. Lorsque des dents persistent dans la bouche, la modulation musculaire est assurée. Par contre, lorsqu’il n’y a plus que des implants, les informations sensitives ne seront perçues et transmises que par les récepteurs sensitifs de l’articulation temporo-mandibulaire, les fuseaux neuromusculaires et les organes tendineux de Golgi, apportant des informations nettement plus frustres, mais suffisantes pour permettre la mastication et l’inhibition musculaire en cas de surcharge.
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Singh, Ajit. "DENTAL IMPLANT DESIGN- AN INSIGHT OVERVIEW". Journal of Medical pharmaceutical and allied sciences 10, nr 4 (15.08.2021): 3101–5. http://dx.doi.org/10.22270/jmpas.v10i4.1254.
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Dental implants are a proven therapeutic option for replacing missing teeth, with positive long-term health outcomes. Dental implant performance is largely determined by the implant’s primary durability, which is affected by surgical procedure, bone quality and quantity, implant surface characteristics, implant geometry, and implant surface characteristics. The implant’s geometry and surface can be modified. The implant geometry and surface can be changed if needed to achieve good primary stability and long-term implant therapy effectiveness. Implant architecture refers to the implant’s three-dimensional structure, as well as all of the components and elements that make it up. Different surface topographies can affect a sequence of coordinated actions such cell proliferation, osteoblast transformation, and the production of bone tissue. At the macro, micro, and increasingly nano sizes, surface topography of implants may be detected. The surgical location of end osseous oral implants is influenced by the prosthetic architecture, as well as the shape and quality of the alveolar bone. There are several alternatives for replacing missing teeth, but within the past few decades, dental implants have been one of the most common biomaterials for replacing one (or more) missing teeth. In a substantial number of patients, titanium dental implants have been shown to be secure and reliable. This study examines the most important historical information of dental implants, as well as the various vital factors that will ensure successful Osseo-integration and a safe prosthesis anchorage. Not only
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Dumon, T., B. Gratacap i R. Vincent. "Implants d’oreille moyenne versus appareils à ancrage osseux dans les surdités mixtes. Résultats auditifs". Annales françaises d'Oto-rhino-laryngologie et de Pathologie Cervico-faciale 130, nr 4 (październik 2013): A47—A48. http://dx.doi.org/10.1016/j.aforl.2013.06.123.
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Courtin, Cyril, Anthony Viste, Desmarchelier Romain, Olivier Cantin i Michel Fessy. "Anomalies symptomatiques du remodelage osseux autour des implants latéralisés. Incidence, facteurs de risque et profil évolutif". Revue de Chirurgie Orthopédique et Traumatologique 102, nr 7 (listopad 2016): S91—S92. http://dx.doi.org/10.1016/j.rcot.2016.08.044.
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Dumon, T., i R. Pialoux. "Auto-évaluation des bénéfices des appareils auditifs implantés : appareils à ancrâge osseux et implants d’oreille moyenne dans les surdités mixtes et de perception". Annales françaises d'Oto-rhino-laryngologie et de Pathologie Cervico-faciale 130, nr 4 (październik 2013): A48. http://dx.doi.org/10.1016/j.aforl.2013.06.124.
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Dumon, T. "Appareillage auditif des surdités mixtes : résultats comparés des appareils à ancrage osseux, des appareils à conduction osseuse directe transcutanée et des implants d’oreille moyenne". Annales françaises d'Oto-rhino-laryngologie et de Pathologie Cervico-faciale 131, nr 4 (październik 2014): A86—A87. http://dx.doi.org/10.1016/j.aforl.2014.07.442.
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Scotti, Anne-Charlotte, Erwan Boudehen, Benoît Thebault, Olivier Sorel i Damien Brézulier. "Comparaison de deux dispositifs d’ancrage pour la distalisation molaire". Revue d'Orthopédie Dento-Faciale 54, nr 3 (wrzesień 2020): 305–18. http://dx.doi.org/10.1051/odf/2020032.
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La gestion de l’ancrage est un paramètre clé dans le succès des thérapeutiques orthodontiques. Parmi les nombreux systèmes classiquement décris, tels que les forces extra-orales, les pastilles de Nance, ou encore le ten-two system de Tweed, aucun n’est dénué d’effets indésirables. C’est pourquoi des dispositifs dits « d’ancrage absolu », sans appui dentaire et permettant de s’affranchir de la coopération du patient sont apparus. Ils sont représentés par l’ensemble des vis ou mini-implants à visée orthodontique. Nous proposons d’étudier ici deux de ces dispositifs : les mini plaques d’ancrage d’une part et les minivis OBS décrites par Chris Chang d’autre part. Notre propos sera illustré au travers de deux cas cliniques traités par distalisation molaire. Nous verrons que ces deux systèmes sont des ancrages osseux temporaires dont la polyvalence rend possible les déplacements des dents dans les trois dimensions de l’espace. Nous montrerons cependant que la phase chirurgicale est plus simple avec les minivis OBS avec moins de comorbidités associées.
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Sampaio, Verônica Porto Ramos, Diego Filipe Bezerra Silva, Flávio Marcel Pereira Barreiro, Hiarles Barreto Sampaio Brito, Francisco Juliherme Pires de Andrade i Daliana Queiroga de Castro Gomes. "Implante imediato associado a enxerto xenógeno e provisionalização imediata em área infectada: relato de caso". ARCHIVES OF HEALTH INVESTIGATION 9, nr 5 (20.04.2020): 444–48. http://dx.doi.org/10.21270/archi.v9i5.4784.
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Introdução: A reabilitação com implantes dentários tornou-se possível de forma imediata a partir do conhecimento e aplicação da osseointegração. Esse procedimento propicia otimização entre o tempo de osseointegração e maturação óssea, além de minimizar a reabsorção alveolar, preservar a arquitetura gengival, e evitar novo procedimento cirúrgico. Objetivo: Evidenciar o sucesso de implante dentário unitário, instalado imediatamente após exodontia e curetagem de lesão periapical extensa, e a instalação da prótese com proservação de 33 meses. Relato do caso: Paciente do sexo feminino, 24 anos de idade, apresentou-se com uma parúlide na gengiva inserida acima do dente 25 e fratura coronal do mesmo. A tomografia computadorizada de feixe cônico (TCFC) revelou uma extensa área hipodensa na região do ápice da raiz do dente 25, medindo 6,7 X 8,2 mm. A referida lesão já havia causado fenestração da parede vestibular, cerca de dois terços no sentido ápice-coroa. Foi instituído como plano de tratamento a instalação de implante dentário imediato com carga imediata. A prótese final foi instalada 13 meses após a instalação do implante. Decorridos 17 meses do procedimento cirúrgico, foi solicitada radiografia periapical de controle, onde foi possível avaliar trabeculado ósseo sadio em torno do implante. Conclusão: Tendo em vista o avanço dos biomateriais utilizados em reabilitação oral e o aprimoramento das técnicas e profissionais que a desempenham, conclui-se que é possível realizar implantes imediatos e reabilitação imediata em área infectada, mesmo em casos limítrofes, com segurança e efetividade, possibilitando a obtenção de resultado final satisfatório.Descritores: Implantes Dentários; Infecção; Regeneração Óssea.ReferênciasBrånemark PI, Adell R, Breine U, Hansson BO, Lindström J, Ohlsson A. Intra-osseous anchorage of dental prostheses. I. Experimental studies. Scand J Plast Reconstr Surg. 1969;3(2):81-100.Rosenquist B, Grenthe B. Immediate placement of implants into extraction sockets: implant survival. Int J Oral Maxillofac Implants. 1996;11(2):205-9.Peñarrocha M, Uribe R, Balaguer J. Immediate implants after extraction. A review of the current situation. Med Oral. 2004;9(3):234-42.Brånemark PI. Branemark Novum: protocolo para reabilitação bucal com carga imediata (same-day teeth): uma perspectiva global. São Paulo: Quintessence; 2001.Carlsson GE, Bergman B, Hedegård B. Changes in contour of the maxillary alveolar process under immediate dentures. A longitudinal clinical and x-ray cephalometric study covering 5 years. Acta Odontol Scand. 1967;25(1):45-75.Novaes AB Jr, Vidigal Júnior GM, Novaes AB, Grisi MF, Polloni S, Rosa A. Immediate implants placed into infected sites: a histomorphometric study in dogs. Int J Oral Maxillofac Implants. 1998;13(3):422-7.Misch CE. Implantes dentários contemporâneos. 2ªed. São Paulo: Santos; 2000.Jensen T, Schou S, Stavropoulos A, Terheyden H, Holmstrup P. Maxillary sinus floor augmentation with Bio-Oss or Bio-Oss mixed with autogenous bone as graft: a systematic review. Clin Oral Implants Res. 2012;23(3):263-73.Müller A, Silva ACBR, Schimidt LTH. Implante unitário submetido à carga imediata. RGO (Porto Alegre). 2004;52(1):27-30.de Oliveira AC, de Souza JR, Thomé G, Melo ACM, Sartori IAM. Implante imediato unitário em função imediata – relato de caso. RFO. 2008;13(1):70-4.Carvalho PFM, Ciotti DL, Silva RC, Joly JC. Implantação e temporização imediata em áreas estéticas, sem abertura de retalho, utilizando implantes de diâmetro reduzido: Relato de caso clínico. Rev ImplantNews. 2008;5(8):307-12.Ferreira LCP, Brito CR, Lehn CN, Siqueira JTT. Avaliação de implantes osseointegráveis submetidos à função imediata comparados à função tardia. Rev ImplantNews. 2010;7(1):13-20.Tazima MFGS, Vicente YAMVA, Moriya T. Biologia da ferida e cicatrização. Medicina (Ribeirão Preto) 2008;41(3):259-64.Thomé G, Borges AFS, Melo ACM, Bassi APF, Sartori IAM, Faot F. Implante imediato em local cronicamente infectado: avaliação após 12 meses. RGO (Porto Alegre). 2007;55(4):417-21.Salmen FS, Oliveira MR, Gabrielli MAC, Piveta ACG, Pereira Filho VA, Gabrielli MFR. Enxerto ósseo para reconstrução óssea alveolar. Revisão de 166 casos. Rev Col Bras Cir. 2017;44(1):33-40.Brånemark PI. Protesis tejido integradas: la osseointegración en la odontologia clínica. Berlim: Quintessence; 1987.Nunes PA, Medeiros MM, Soder MV, Klein ALL, Hasse PN, Pfau EA. Implante e provisionalização imediata com resina composta em area estética. Arq Ciênc Saúde UNIPAR. 2014;18(1):65-8.Ruskin JD, Morton D, Karayazgan B, Amir J. Failed root canals: the case for extraction and immediate implant placement. J Oral Maxillofac Surg. 2005;63(6):829-31.Esposito M, Grusovin MG, Polyzos IP, Felice P, Worthington HV. Interventions for replacing missing teeth: dental implants in fresh extraction sockets (immediate, immediate-delayed and delayed implants). Cochrane Database Syst Rev. 2010;(9):CD005968.Buser D, Mericske-Stern R, Bernard JP, Behneke A, Behneke N, Hirt HP, Belser UC, Lang NP. Long-term evaluation of non-submerged ITI implants. Part 1: 8-year life table analysis of a prospective multi-center study with 2359 implants. Clin Oral Implants Res. 1997;8(3):161-72.Sousa MAF. Considerações relativas à colocação imediata de implantes em alvéolos pós-extração. Artigo de Revisão Bibliográfica Mestrado Integrado em Medicina Dentária. Faculdade de Medicina Dentária, Universidade do Porto, 2014.Chaushu G, Chaushu S, Tzohar A, Dayan D. Immediate loading of single-tooth implants: immediate versus non-immediate implantation. A clinical report. Int J Oral Maxillofac Implants. 2001;16(2):267-72.Lorenzoni M, Pertl C, Zhang K, Wimmer G, Wegscheider WA. Immediate loading of single-tooth implants in the anterior maxilla. Preliminary results after one year. Clin Oral Implants Res. 2003;14(2):180-87.Galli F, Capelli M, Zuffetti F, Testori T, Esposito M. Immediate non-occlusal vs. early loading of dental implants in partially edentulous patients: a multicentre randomized clinical trial. Peri-implant bone and soft-tissue levels. Clin Oral Implants Res. 2008;19(6):546-52.
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Pineau, Mallouel, Romain Nicot, Ludovic Lauwers, Joël Ferri i Gwénaël Raoul. "L’implant zygomatique dans notre pratique quotidienne". SWISS DENTAL JOURNAL SSO – Science and Clinical Topics 128, nr 9 (10.09.2018): 694–700. http://dx.doi.org/10.61872/sdj-2018-09-06.
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L’influence des prothèses et des implants dentaires sur la qualité de vie liée à la santé bucco- dentaire du patient peut guider le praticien dans la prestation des meilleurs services. L’implant zygomatique (IZ) constitue une technique alter- native partielle ou complète aux techniques de réhabilitation dites «traditionnelles» (visant à augmenter le volume osseux) des maxillaires atrophiques édentés. L’objectif de cette étude était d’appréhender l’impact de la réhabilitation prothétique fixe par IZ sur la qualité de vie des patients. Cette étude mettait en évidence le degré de satisfaction d’une série de neuf patients traités par IZ à travers leurs scores au questionnaire Oral Health Impact Profile OHIP-14 préthérapeutiques et post-thérapeutiques. L’influence des IZ sur la qualité de vie est discutée par rapport à la littérature de référence. Le score OHIP préthérapeutique moyen était de 29,1. Le score OHIP post-thérapeutique moyen était de 5,8. Le ressenti sur la qualité de vie des patients était très satisfaisant. Conformément à la littérature, la réhabilitation prothétique fixe sur IZ apportait une satisfaction tant dans sa dimension fonctionnelle qu’esthétique. Cette option de l’arsenal thérapeutique du maxillaire atrophique édenté se montre de plus en plus intéressante dans notre pratique quotidienne.
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Jamal Sayed, Arshad. "Osseo-densification for preservation and compaction of alveolar bone in enhancing stability of dental implants: A systematic review". Journal of Medical pharmaceutical and allied sciences 13, nr 1 (29.02.2024): 6337–53. http://dx.doi.org/10.55522/jmpas.v13i1.5741.
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A higher implant failure rate may be associated with a lack of primary stability. Primary stability is a stationary, entirely mechanical parameter that determines when an implant is placed. Several methods have been developed to improve the primary implant's level of stability. However, Osseo-densification (OD) is a revolutionary implant preparation approach that addresses these issues and enhances the main stability of implants inserted into low-density bones. In light of this, the present systematic review was conducted to understand the Osseo-densification for preservation and compaction of alveolar bone in enhancing the stability of the dental implant. Research papers from PubMed, CINAHL, Web of Science, and Web of Science, Medline searched. The most recent literature suggests that using the Osseo-densification drilling protocol increases the overall value of implant insertion torque and, consequently, increases the primary stability of implants. To evaluate the caliber of the contained research, CARE, ARRIVE, and modified CONSORT checklists were employed. 133 full texts were chosen for further investigation after duplicates were removed and titles and abstracts were reviewed of these, 27 entire texts met the inclusion criteria. The thorough literature search identified 6 Case Studies & Case Series, 11 in vivo animal studies, and ten /experimental animal studies that noted the use of the Osseo-densification technique. The data from most recent animal in vivo/in vitro studies and case reports / case series suggest that Osseo-densification drilling protocol increases the overall value of implant insertion torque and, as a result, increases implant primary stability.
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Neuville, Daniel R., i Laurent Cormier. "Le verre : un matériau d’hier, d’aujourd’hui et de demain". Matériaux & Techniques 110, nr 4 (2022): 404. http://dx.doi.org/10.1051/mattech/2022037.
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Les verres jouent un rôle fondamental dans notre quotidien tant au niveau économique, culturel, sociétal, énergétique que géologique. Les verres géologiques témoignent de l’activité ignée de la Terre et représentent une source importante d’outils et d’objets ornementaux du Paléolithique à nos jours. Désormais, les verres sont utilisés également pour fabriquer des matériaux techniques, tels que des récipients (plats, verres à boire, bocaux, carafes…), des écrans (télévision, ordinateur, smartphone…), des fibres aux multiples applications (renforcement, transport d’information, énergie, santé…), pour assurer le stockage de déchets domestiques ou nucléaires et, plus récemment, des biomatériaux (implants dentaires ou osseux…). Par conséquent, les verres à base de silice sont au cœur de l’histoire de la Terre et de l’humanité. La variation de composition des verres naturels et industriels est vaste mais sa structure repose généralement sur une ossature tétraédrique d’unités SiO4, l’épine dorsale de plus de 90% des verres qui nous entourent dans notre quotidien. Autour de cette ossature de silice, les autres éléments chimiques se répartissent en éléments modificateurs de réseau, compensateur de charge, colorants, volatiles, et l’ensemble constitue un matériau ou une substance chaque fois unique. Cet article propose de passer en revue les liens entre la structure, les propriétés et la composition chimique des verres, essentiellement à base de silicate.
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Caccianiga, Gianluigi, Gérard Rey, Paolo Caccianiga, Alessandro Leonida, Marco Baldoni, Alessandro Baldoni i Saverio Ceraulo. "Rough Dental Implant Surfaces and Peri-Implantitis: Role of Phase-Contrast Microscopy, Laser Protocols, and Modified Home Oral Hygiene in Maintenance. A 10-Year Retrospective Study". Applied Sciences 11, nr 11 (28.05.2021): 4985. http://dx.doi.org/10.3390/app11114985.
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The aim of this study was to evaluate two different kinds of rough implant surface and to assess their tendency to peri-implantitis disease, with a follow-up of more than 10 years. Data were obtained from a cluster of 500 implants with Ti-Unite surface and 1000 implants with Ossean surface, with a minimum follow-up of 10 years. Implants had been inserted both in pristine bone and regenerated bone. We registered incidence of peri-implantitis and other causes of implant loss. All patients agreed with the following maintenance protocol: sonic brush with vertical movement (Broxo), interdental brushes, and oral irrigators (Broxo) at least two times every day. For all patients with implants, we evaluated subgingival plaque samples by phase-contrast microscopy every 4 months for a period of more than 10-years. Ti-Unite surface implants underwent peri-implantitis in 1.6% of the total number of implants inserted and Ossean surface implants showed peri-implantitis in 1.5% of the total number of implants. The total percentage of implant lost was 4% for Ti-Unite surfaces and 3.6% for Ossean surfaces. Strict control of implants leads to low percentage of peri-implantitis even for rough surfaces dental implants.
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Sidun, Jarosław, i Jan Ryszard Dąbrowski. "Bone Ingrowth Processes on Porous Metalic Implants". Solid State Phenomena 147-149 (styczeń 2009): 776–81. http://dx.doi.org/10.4028/www.scientific.net/ssp.147-149.776.
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The surface of an endosseous implant has fundamental importance in forming mechanical and chemical connection with osseous tissue. One of the methods of enlarging area is using technology of powder metallurgy. The paper presents research regarding osteointegration of porous materials for implants made for Co-Cr-Mo and titanium with Bioglass type-S2. The research was made on the castrated goats averaging one year of age, from this oneself herds. Bone growth process on surfaces of implants made with additional bioglass was significantly intense. The amount of osseous tissue and the number of connection points are significantly increased. On surfaces of titanium implants few areas of stochastic callus formation were observed. In that case areas of preferential bone integration have uneven surface due to technological process. A significant difference appears in osseous tissue growth morphology on implant surface. In porous implants bone grows around the pores of an implant. The obtained results showed that porosity influences callus growth intensity beneficially on the implant structure. Use of bioglass increases bone growth intensity on implant surface.
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Aboushelib, Moustafa N., Noha A. Salem, Ahmed L. Abo Taleb i Naglaa M. Abd El Moniem. "Influence of Surface Nano-Roughness on Osseointegration of Zirconia Implants in Rabbit Femur Heads Using Selective Infiltration Etching Technique". Journal of Oral Implantology 39, nr 5 (1.10.2013): 583–90. http://dx.doi.org/10.1563/aaid-joi-d-11-00075.
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This study evaluates osseous healing of selective infiltration-etched (SIE) zirconia implants compared to as-sintered zirconia and titanium implants. Twenty implants of each group were inserted in 40 adult New Zealand white male rabbits. After 4 and 6 weeks, bone blocks containing the implants were retrieved, sectioned, and processed to evaluate bone-implant contact (BIC) and peri-implant bone density. SIE zirconia implants had significantly higher BIC and marginally higher bone density. The results suggest that selective infiltration-etched zirconia implant surface may improve implant osseointegration.
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Olugbeje, Helen, i Mickaël Samama. "Fistule cutanée faciale consécutive à une régénération osseuse guidée mandibulaire". SWISS DENTAL JOURNAL SSO – Science and Clinical Topics 131, nr 4 (6.04.2021): 349–52. http://dx.doi.org/10.61872/sdj-2021-04-04.
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La régénération osseuse guidée est une tech- nique couramment utilisée en vue d’augmenter le volume osseux avant la réhabilitation implanto-prothétique d’un édentement. Les complications telles que les infections sont assez rares mais peuvent survenir. Dans le cas présent, une patiente a présenté une fistule cutanée jugale plusieurs mois après une intervention de régénération osseuse guidée à la mandibule.
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Deguchi, T., T. Takano-Yamamoto, R. Kanomi, J. K. Hartsfield, W. E. Roberts i L. P. Garetto. "The Use of Small Titanium Screws for Orthodontic Anchorage". Journal of Dental Research 82, nr 5 (maj 2003): 377–81. http://dx.doi.org/10.1177/154405910308200510.
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The use of conventional dental implants for orthodontic anchorage is limited by their large size. The purpose of this study was to quantify the histomorphometric properties of the bone-implant interface to analyze the use of small titanium screws as an orthodontic anchorage and to establish an adequate healing period. Overall, successful rigid osseous fixation was achieved by 97% of the 96 implants placed in 8 dogs and 100% of the elastomeric chain-loaded implants. All of the loaded implants remained integrated. Mandibular implants had significantly higher bone-implant contact than maxillary implants. Within each arch, the significant histomorphometric indices noted for the “three-week unloaded” healing group were: increased labeling incidence, higher woven-to-lamellar-bone ratio, and increased osseous contact. Analysis of these data indicates that small titanium screws were able to function as rigid osseous anchorage against orthodontic load for 3 months with a minimal (under 3 weeks) healing period.
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Paul, Dr Nandan Rudra. "Cortico-basal Implants – The Ultimate Rescuer". Journal of Medical Science and clinical Research 12, nr 03 (31.03.2024): 91–95. http://dx.doi.org/10.18535/jmscr/v12i03.12.
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Immediately loaded, implant supported prosthesis is a novel advancement in oral implantology. Corticobasal implants has the versatility and durability with reduced treatment time. These implants work on the principle of osseo-fixation, however, osseointegration of the implants eventually happens over a time period. Cortico-basal implant supported prostheses came to the rescue, in our following cases, where a corticobasal implant was placed in between 2 fractured, well osseo-integrated conventional implants. Another case with large periapical cyst encroaching into the right maxillary sinus floor eneucleated with the involved teeth leading to an oro-antral communication, closed surgically. Cortico-basal implants were placed bypassing the right sinus floor to restore the function. In another case of failed multiple endodontically restored teeth and even endosseous implants, cortico-basal immediate loading prostheses were placed to successfully restore both the jaws. Cortico-basal implant supported prostheses is a graft less procedure with minimized chair side time, having optimum peri-implant soft tissue health, durable, with high success rate and are gradually emerging as a promising alternative in dental rehabilitation cases. Strategic implant placement of the cortico-basal implants has proved to be the ultimate rescuers in certain circumstances. Keywords: Corticobasal, Endosseous, Implants, Osseofixation, Osseointegration.
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Perez, Alexandre, Avigaïl Maman, Edouard Di Donna i Tommaso Lombardi. "Implant Placement in a Cemento-Osseous Dysplasia: A case report". Discussion of Clinical Cases 8, nr 2 (7.08.2021): 6. http://dx.doi.org/10.5430/dcc.v8n2p6.
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We present a 45-year-old black woman diagnosed with a florid cemento-osseous dysplasia (FCOD) affecting the right lower quadrant and the anterior mandibular region. The patient requested dental implants to rehabilitate the edentulous central lower incisors area (teeth # 31 and # 41) corresponding to a periapical cemento-osseous dysplasia (PCOD). Successful osseointegration of the two implants was obtained using a two-step procedure in order to limit the risk of complications associated with implant placement. Follow-up at one year showed no recurrence and good implant stability. Due to the abnormal quality of the bone in cemento-osseous dysplasia (COD), implant placement is generally avoided, and no other case reports have been reported in the literature in patients affected by PCOD. The present case suggests that in an appropriate clinical setting, implant placement may be a successful procedure.
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Andrade, Catherine X., Marc Quirynen, David R. Rosenberg i Nelson R. Pinto. "Interaction between Different Implant Surfaces and Liquid Fibrinogen: A Pilot In Vitro Experiment". BioMed Research International 2021 (5.07.2021): 1–8. http://dx.doi.org/10.1155/2021/9996071.
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Background. Platelet concentrates like leucocyte- and platelet-rich fibrin (L-PRF) have been widely evaluated in different oral surgical procedures to promote the healing process. However, liquid L-PRF products such as liquid fibrinogen have been poorly explored, especially in the biomimetic functionalization of dental implants. The aim of this in vitro study is to evaluate the interaction between 5 different dental implant surfaces and liquid fibrinogen. Methods. Five commercially available dental implants with different surfaces (Osseospeed™, TiUnite™, SLActive®, Ossean®, and Plenum®) were immersed for 60 minutes in liquid fibrinogen obtained from healthy donors. After this period, the implants were removed and fixed for scanning electron microscopy (SEM). Results. All dental implants were covered by a fibrin mesh. However, noticeable noncontact areas were observed for the Osseospeed™, TiUnite™, and SLActive® surfaces. On the other hand, Ossean® and Plenum® surfaces showed a dense and uniform layer of fibrin covering almost the entire implant surface. The Osseospeed™, TiUnite™, and SLActive® surfaces presented with lower blood cell numbers inside the fibrin mesh compared with the others. Moreover, at higher magnification, thicker fibrin fibers were observed in contact with Ossean® and Plenum® surfaces. The Plenum ®surface showed the thickest fibers which also inserted and interconnect to the microroughness. Conclusion. The initial contact between an implant surface and the fibrin network differs significantly among different implant brands. Further studies are necessary to explore the clinical impact of these observations in the osseointegration process of dental implants.
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Jackson, Brian J. "Small Diameter Implants: Specific Indications and Considerations for the Posterior Mandible: A Case Report". Journal of Oral Implantology 37, sp1 (1.04.2011): 156–64. http://dx.doi.org/10.1563/aaid-joi-d-09-00142.1.
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The field of implant dentistry continues to grow globally as clinicians embrace the evolution of various endosseous implant technologies and the array of enhanced surgical and prosthetic products. The utilization of small diameter implants in limited osseous regions increases patients' ability to choose implants as a viable restorative option. Although small diameter implants have been indicated in the incisor region for the maxilla and mandible primarily, their usage should be considered in select posterior regions. These 2 case reports demonstrate the incorporation of small diameter implants to replace missing mandibular posterior teeth.
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Neiva, Rodrigo F., Luiz Fernando Gil, Nick Tovar, Malvin N. Janal, Heloisa Fonseca Marao, Estevam Augusto Bonfante, Nelson Pinto i Paulo G. Coelho. "The Synergistic Effect of Leukocyte Platelet-Rich Fibrin and Micrometer/Nanometer Surface Texturing on Bone Healing around Immediately Placed Implants: An Experimental Study in Dogs". BioMed Research International 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/9507342.
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Aims. This study evaluated the effects of L-PRF presence and implant surface texture on bone healing around immediately placed implants.Methods. The first mandibular molars of 8 beagle dogs were bilaterally extracted, and implants (Blossom™, Intra-Lock International, Boca Raton, FL) were placed in the mesial or distal extraction sockets in an interpolated fashion per animal. Two implant surfaces were distributed per sockets: (1) dual acid-etched (DAE, micrometer scale textured) and (2) micrometer/nanometer scale textured (Ossean™ surface). L-PRF (Intraspin system, Intra-Lock International) was placed in a split-mouth design to fill the macrogap between implant and socket walls on one side of the mandible. The contralateral side received implants without L-PRF. A mixed-model ANOVA (atα=0.05) evaluated the effect of implant surface, presence of L-PRF, and socket position (mesial or distal), individually or in combination on bone area fraction occupancy (BAFO).Results. BAFO values were significantly higher for the Ossean relative to the DAE surface on the larger mesial socket. The presence of L-PRF resulted in higher BAFO. The Ossean surface and L-PRF presence resulted in significantly higher BAFO.Conclusion.L-PRF and the micro-/nanometer scale textured surface resulted in increased bone formation around immediately placed implants.
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Flanagan, Dennis. "Osseous Remodeling Around Dental Implants". Journal of Oral Implantology 45, nr 3 (1.06.2019): 239–46. http://dx.doi.org/10.1563/aaid-joi-d-18-00130.
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Adequate bone remodeling may be a primary parameter for long-term successful complication-free dental implant treatment. A 1.8-mm osseous thickness around dental implants is thought to be the minimum thickness for adequate vasculature for osteocyte nutrition and function. A dental implant does not provide progenitor cells or angiogenic or osteogenic factors. Thus, the surrounding bone may need to have a 1.8-mm thickness to accommodate the vasculature necessary for nutrients for appropriate remodeling. Additionally, the 1.8-mm dimension may provide for mechanical load resistance. There is no evidence to illustrate the physiologic need for the 1.8-mm dimension. This dimension requirement is based on clinical outcome observations. Basic science research for bone survival around dental implants is needed.
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Hocková, Barbora, Rastislav Slávik, Basel Azar, Jakub Stebel, Dušan Poruban, Estevam A. Bonfante, Rolf Ewers, Yu-Chi Cheng i Adam Stebel. "Short and Extra Short Dental Implants in Osseous Microvascular Free Flaps: A Retrospective Case Series". Journal of Personalized Medicine 14, nr 4 (3.04.2024): 384. http://dx.doi.org/10.3390/jpm14040384.
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There is limited information regarding implant and prosthetic survival after osseous microvascular free flap (OMFF). This case series aims to describe the placement of short and extra short implants in osseous microvascular free flaps to support prostheses, and present an up to 40-month retrospective follow-up. Short and extra short dental implants were placed in six fibula free flaps (FFF) and in two microvascular deep circumflex iliac artery (DCIA) flaps. In total, 27 short and extra short dental implants have been placed into two different types of free flaps. Kaplan–Meyer (K-M) survival analyses were performed to evaluate the survival and success outcomes of implants and prostheses. Out of the eight patients reconstructed with free flap, five were rehabilitated with prostheses, one patient has a temporary prosthesis, and two patients are in the process of prosthetic rehabilitation. Twenty-seven implants were followed up for up to 40 months, and K-M analyses showed 100% implant survival probability (95% confidence interval: 100%), while the implant success probability was 91.0% (95% confidence interval: 68.6–97.7%). Short and extra short dental implants placed in OMFF presented high survival and success rates in a retrospective case series after up to 40 months.
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Mun, Tatyana, i Nigmon Khabilov. "Results of stability determination of the dental implant «Implant.uz» using the RFA – method". InterConf, nr 40(183) (20.12.2023): 438–42. http://dx.doi.org/10.51582/interconf.19-20.12.2023.042.
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Resonance Frequency Analysis (RFA) is a noninvasive intraoral method designed to assess bone-implant interface and may therefore provide clinical evidence of implant stability. To achieve osseointegration of dental implants, certain biological and biomechanical requirements must be met. One of the most important requirements is the absence of micro-movements during the stage of osseous cicatrization. In classic implant products, implants receive no functional load until bone and implant surface are closely jointed together, as this assures permanent implant stability throughout the stages that follow implant placement.This article discusses the RFA -method for determining the stability of a dental implant of the "Implant.uz" system at various times after dental implantation.
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Zanicotti, Diogo Godoy, Fernanda Brugin Matsubara, João César Zielak, Allan Fernando Giovanini, Cícero de Andrade Urban i Tatiana Miranda Deliberador. "Nonprocessed Adipose Tissue Graft in the Treatment of Peri-Implant Osseous Defects in the Rabbit's Tibiae: A Pilot Study". Journal of Oral Implantology 40, nr 1 (1.02.2014): 60–66. http://dx.doi.org/10.1563/aaid-joi-d-11-00149.
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We hypothesized that a new technique using nonprocessed adipose tissue could regenerate bone around dental implants. Eighteen rabbits received 1 implant per tibia surrounded by a surgically created osseous defect. The defects were assigned for treatment into 3 groups: C, AT, and AB. The percentages of bone-to-implant contact were 17.64% ± 16.22% (AB), 3.54% ± 7.08% (AT), and 12.71% ± 10.11% (C) (ρ = 0.25). The use of adipose tissue around surgically created peri-implant osseous defects interferes with bone formation.
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Flanagan, Dennis. "Avoiding Osseous Grafting in the Atrophic Posterior Mandible for Implant-Supported Fixed Partial Dentures: A Report of 2 Cases". Journal of Oral Implantology 37, nr 6 (1.12.2011): 705–11. http://dx.doi.org/10.1563/aaid-joi-d-10-00094.
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Bone atrophy occurs after tooth extraction in the posterior mandible, placing the mandibular canal and its neural, arterial, and venous contents closer to the osseous facial aspect and the coronal crest. This proximity places the structure in danger of damage when dental implants are surgically placed to support fixed or removable prostheses. Several options are available to treat these areas for implant-supported fixed and removable complete or partial dentures. Osseous grafting and ridge expansion are surgical options that enable acceptance of standard sized dental implants but have serious morbidities. Additionally, vertical osseous augmentation is not predictable at this time. Narrow diameter dental implants can be placed to avoid the mandibular canal, but some bone volume situations preclude this. Very wide and very short (6.5 × 5 mm) dental implants may be placed at an angle in atrophic sites to successfully support fixed partial dentures. An anterior guidance occlusal scheme may be used in maxillary dentate patients or group function in maxillary complete denture patients. A 100 micron occlusal relief in fixed partial dentures in dentate patients may be required to account for natural tooth intrusion and to prevent occlusal overload of the implant-supported partial denture.
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Janeczek, Maciej, Patrycja Szymczyk, Maciej Dobrzynski, Olga Parulska, Maria Szymonowicz, Piotr Kuropka, Zbigniew Rybak i in. "Influence of surface modifications of a nanostructured implant on osseointegration capacity – preliminary in vivo study". RSC Advances 8, nr 28 (2018): 15533–46. http://dx.doi.org/10.1039/c8ra01625a.
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Flörke, Christian, Anne-Katrin Eisenbeiß, Ulla Metz, Aydin Gülses, Yahya Acil, Jörg Wiltfang i Hendrik Naujokat. "Introducing a Novel Experimental Model for Osseo-Disintegration of Titanium Dental Implants Induced by Monobacterial Contamination: An In-Vivo Feasibility Study". Materials 14, nr 22 (22.11.2021): 7076. http://dx.doi.org/10.3390/ma14227076.
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Background and Objectives: The aim of the current study was to establish an osseo-disintegration model initiated with a single microorganism in mini-pigs. Materials and Methods: A total of 36 titanium dental implants (3.5 mm in diameter, 9.5 mm in length) was inserted into frontal bone (n: 12) and the basis of the corpus mandible (n: 24). Eighteen implants were contaminated via inoculation of Enterococcus faecalis. Six weeks after implant insertion, bone-to-implant contact (BIC) ratio, interthread bone density (ITBD), and peri-implant bone density (PIBD) were examined. In addition to that, new bone formation was assessed via fluorescence microscopy, histomorphometry, and light microscopical examinations. Results: Compared to the sterile implants, the contaminated implants showed significantly reduced BIC (p < 0.001), ITBD (p < 0.001), and PBD (p < 0.001) values. Around the sterile implants, the green and red fluorophores were overlapping and surrounding the implant without gaps, indicating healthy bone growth on the implant surface, whereas contaminated implants were surrounded by connective tissue. Conclusions: The current experimental model could be a feasible option to realize a significant alteration of dental-implant osseointegration and examine novel surface decontamination techniques without impairing local and systemic inflammatory complications.
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Vishnu, Vande Aaditee, Pronob Kumar Sanyal, Shivsagar Tewary, Kumar Nilesh, Roy Malvika Suresh Prasad i Karuna Pawashe. "A split-mouth clinico-radiographic comparative study for evaluation of crestal bone and peri-implant soft tissues in immediately loaded implants with and without platelet-rich plasma bioactivation". Journal of Dental Research, Dental Clinics, Dental Prospects 13, nr 2 (14.08.2019): 117–22. http://dx.doi.org/10.15171/joddd.2019.018.
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Background. This study evaluated the viability of platelet-rich plasma for enhancement of osseous and associated soft tissue healing around single-piece implants, subjected to immediate loading and to compare it with a control site not treated with PRP. Methods. Twenty completely edentulous patients were selected and 2 one-piece implants with O-ball head were placed for mandibular overdenture. The implant on the right side was treated with PRP whereas the left side implant served as a control. All the cases were immediately loaded and marginal bone loss, probing depth, percussion, implant mobility and peri-implantitis were assessed and compared at 3, 6, 9 and 12 months. Results. Overall analysis of the results showed less marginal bone loss, probing depth, percussion, implant mobility and periimplantitis around implants treated with PRP; however, the results were insignificant statistically. Conclusion. PRP can be used as a viable treatment adjunct in immediately loaded one-piece implants.
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Tamás, Száva Dániel, Száva Ioan, Gálfi Botond, Iacob Alina, Petrovan Cecilia, Ormenişan Alina i Székely Melinda. "Experimental Evaluation of Dental Implant Biomechanics Given Certain Stages of the Fixing Substrate Deterioration by Video Image Correlation Method". Acta Medica Marisiensis 61, nr 3 (1.09.2015): 192–95. http://dx.doi.org/10.1515/amma-2015-0068.
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AbstractBackground: Dental implants are useful tools and represent a widely spread technique for oral rehabilitation. Their long standingness is highly influenced by the mechanical and geometrical properties of the surrounding osseous tissue in which they are placed. In some unsuccessful cases though, the dental implant is exposed to masticatory forces and other functional acts, and osseous tissue may resorb near its vicinity, leading to the dental implants loss. We investigated the strain distribution inside the fixating substrate, given certain stages of its deterioration near the dental implants.Material and methods: For our investigations we used cilindro-conical screw-type dental which were submitted to vertical forces between 0-1000 N. The dental implants were fixed inside a plastic material used in photo-elastic measurements.To evaluate the strain distribution inside the fixing substrate, we used a non-contact, experimental investigation tool, the Video Image Correlation (VIC-3D) optical system. This system allows the implementation in the dental implants optimisation from stress-strain state point of view.Results: The strain field distribution inside the fixating substrate was measured at three different levels of the dental implant, when it was loaded alone and in the case when there were loaded two dental implants simultaneously.Conclusions: The most stresses are concentrated in the neck-area of the dental implant. If there are loaded two or more dental implants simultaneously, the distance between them influences strain distribution. The measurements were conducted in vitro and do not represent the in vivo conditions, but serve further important facts regarding biomechanical properties of dental implants.
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OLIVEIRA, Maiolino Thomaz Fonseca, Sérgio Vitorino CARDOSO, Cláudia Jordão SILVA, Darceny ZANETTA-BARBOSA i Adriano Mota LOYOLA. "Failure of dental implants in cemento-osseous dysplasia: a critical analysis of a case". Revista de Odontologia da UNESP 43, nr 3 (czerwiec 2014): 223–27. http://dx.doi.org/10.1590/rou.2014.035.
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Introduction: Osseointegrated dental implants have been routinely used in oral rehabilitation. Patients with dysplastic bone diseases represent a particular challenge for oral rehabilitation with dental implants. Nevertheless, the installation of implants in patients with cemento-osseous dysplasia (COD) has been reported with apparent success. Objective: In this paper, we present a case of a patient with COD in which a dental implant had been installed and lost six months later. In this regard, we analyzed pertinent aspects of the indications for dental implants in patients with COD considering the pathogenesis, dysplastic nature, and behavior of the disease. Conclusion: The present case report illustrates that COD can be considered a limiting factor in the recommendation for a dental implant. Because of this, it is imperative to inform the patient about the risks of surgically manipulating the diseased bone.
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H. Ali, Nagham, i Emad H. Abdulla. "Implant Fixture Fracture (5-10 years clinical study)". Tikrit Journal for Dental Sciences 8, nr 2 (13.11.2023): 64–78. http://dx.doi.org/10.25130/tjds.8.2.4.
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Introduction: Osseo integrated dental implant represents an advance management in modern dentistry, with high success rates. Despite that, several complications involve dental implants may still happen and dental surgeons should be attentive to such problem, to prevent implant failures and biomechanical problems. One of the most serious late implant complications is the fracture of implant fixture. It can be a challenge for dentists to determine the etiology of fixture fractures. Aim of study: Evaluate the effect of some implant parameters, such as length, diameter and position, on the occurrence of fixture fracture and to determine the incidence of fractures reported in 5-10 years of fallow up. Materials and methods: Clinical retrospective study included 439 implants made of titanium alloy(Ti-6Al-4V) placed in 192 Iraqi patients; 103 male patients and 89 female patients with partially and completely edentulous areas had consulted the implant department at Al- Elwiya specialized dental center in Iraq. Results: In this study 439 fixtures distributed in 192patients; 53, 6% was male patients; 46.3% female patients.3 fixtures fracture reported in this study represent 1.5% in relation to total number of patients. 0.6% of the 439 fixtures installed. 71 fixtures 16.1% supported prosthesis with Pontics; that reported 3 fixtures fracture 4.2%, while 368 fixtures 83.8% supported prosthesis without Pontics in which no fracture of fixtures were recorded. Discussion &Conclusion: Fracture of Osseo integrated dental implants is a late complication, it has low incidence, the fracture of dental implants fixture are multifactorial, and the most common cause for fracture is the biomechanical or physiologic overload.
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Noor, Nabbiya, Zainab Ilyas, Bilal Ahmed, Ahmad Shoaib, Nida Fatima i Harris Saeed. "Outcomes of Immediately & Conventionally Loaded Dental Implants". Annals of PIMS-Shaheed Zulfiqar Ali Bhutto Medical University 20, nr 2 (1.03.2024): 108–16. http://dx.doi.org/10.48036/apims.v20i2.915.
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Clinical dentistry has been subjected to a revolution by introduction of “Osseo integrated” dental implants. New trends have always been of keen interest in “implant prosthodontics”. The aim behind this systematic review was to assimilate the outcomes of “immediately” & “conventionally” loaded implants. To do so a detailed electronic search was performed on PubMed, Science Direct & Research gate to identify pertinent articles published between 2000 to 2021. After detailed scrutiny, six studies met the preset eligibility criteria & hence were shortlisted for this project. As far as the results were concerned, no remarkable difference was seen between the success of “immediately” & “conventionally” loaded implant groups. There was no remarkable difference in marginal bone levels, masticatory efficiency, bleeding on probing, implant stability quotients, peri-implant soft tissue contours among both the groups provided that immediately loaded implants had significant primary stability. In selected patients “immediate loading protocol” can successfully be practiced ensuring that adequate primary implant stability has been achieved. Cochrane Review number: COCHRANEPHAHS-2022-00152
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Awaad, Nesma Mohamed, Noha Mohamed Eladl i Nadia Ahmed Abbass. "Assessments of Bone Height Loss in Telescopic Mandibular Implant-Retained Overdentures Retained by Two and Four End - Osseous Implants: A Randomized Clinical Trial". Open Access Macedonian Journal of Medical Sciences 7, nr 4 (19.02.2019): 623–27. http://dx.doi.org/10.3889/oamjms.2019.108.
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AIM: This randomized clinical study aimed to assess bone height loss when using mandibular implant overdentures retained by two and four endosseous implants using the telescopic attachments.
METHODS: Twelve completely edentulous patients were randomly allocated so that six patients were treated by telescopic implant overdenture retained by two implants (group A) and six patients were treated with overdentures retained by four implants (group B). Digital radiographic evaluation of bone height using Digora was made starting at the functional loading day followed by time intervals of 12 months.
RESULTS: No implant loss during the healing period or after functional loading. Radiographic evaluation revealed a statistically significant difference was found between (Group A) and (Group B) were (p < 0.001).
CONCLUSION: For bone loss, widely distributed four intraforaminal implants revealed more bone preservation than only two implants when using the telescopic attachments to support and retain an over dentures taking in consideration the type of the attachment will be used.
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Khodarahmi, Iman, i Jan Fritz. "Advanced MR Imaging after Total Hip Arthroplasty: The Clinical Impact". Seminars in Musculoskeletal Radiology 21, nr 05 (12.10.2017): 616–29. http://dx.doi.org/10.1055/s-0037-1606137.
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AbstractRecent metal artifact reduction techniques in magnetic resonance imaging (MRI) have sparked a new aera in visualization of the peri-implant region and assessment of failing orthopaedic hardware. Modes of failure after total hip arthroplasty can be classified into four broad categories: osseous abnormalities, implant instability and dislocation, implant-associated synovitis, and soft tissue abnormalities. Although MRI is complementary to plain radiography and computed tomography to diagnose the first two categories, it is paramount to investigate the complications related to the synovium and soft tissues. We review the most common modes of failure of hip implants and the MRI characteristics of various causes of pain and dysfunction after hip arthroplasty including osseous stress reaction and fracture, implant loosening, implant instability, polyethylene wear–induced synovitis, adverse reaction to metal debris, infection, hematoma, recurrent hemarthrosis, heterotopic ossification, muscle, tendon, and nerve abnormalities, and periprosthetic neoplasms.
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Mordini, Lorenzo, Ningyuan Sun, Naiwen Chang, John-Paul De Guzman, Luigi Generali i Ugo Consolo. "Peri-Implantitis Regenerative Therapy: A Review". Biology 10, nr 8 (13.08.2021): 773. http://dx.doi.org/10.3390/biology10080773.
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The surgical techniques available to clinicians to treat peri-implant diseases can be divided into resective and regenerative. Peri-implant diseases are inflammatory conditions affecting the soft and hard tissues around dental implants. Despite the large number of investigations aimed at identifying the best approach to treat these conditions, there is still no universally recognized protocol to solve these complications successfully and predictably. This review will focus on the regenerative treatment of peri-implant osseous defects in order to provide some evidence that can aid clinicians in the approach to peri-implant disease treatment.
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Alzahrani, Abdulrahman H. Alzahrani. "All-on-4 and complete denture rehabilitation utilizing dual surgical guide for partially edentulous mandible - a case report". Romanian Journal of Stomatology 70, nr 1 (31.03.2024): 79–86. http://dx.doi.org/10.37897/rjs.2024.1.13.
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Growing numbers of people are using implant-supported fixed prothesis for mandibular resorbed arch, which has created a need for primary care physicians to be more knowledgeable about popular prosthetic attachments and provide access to a wide range of treatment alternatives to assist patient care. The purpose of this study was to report a case of full-mouth rehabilitation on four end osseous implants loaded by the established protocol. In a hypertensive and diabetic patient, the decision was made to place four implants in the mandibular arch and a removable complete denture in the maxillary arch. A good implant-supported fixed prosthesis depends on precise impressions and meticulous attention to detail.
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Harouna, Mohamed S., Mohamed M. Shoushana, Ibrahim M. Nowaira i Marwa T. Ibrahim. "Installation of dental implants in distracted anterior alveolar bone". Tanta Dental Journal 21, nr 1 (2024): 53–59. http://dx.doi.org/10.4103/tdj.tdj_64_23.
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Purpose This study was planned to evaluate the success of dental implants installed in distracted alveolar bone using extra-osseous vertical distractor. Patients and methods This is a prospective noncontrolled clinical study that was carried out on eight patients with age range from 20 to 50 years old who complained from vertical alveolar defect in anterior area and underwent vertical alveolar distraction osteogenesis using extra-osseous distractor device followed by implant installation. Results Clinically there was a significant increase in vertical height of alveolar bone after distraction at P value of 0.007. Radiographically, by cone-beam computed tomography there was a significant increase in alveolar bone height and implants installed in distracted anterior alveolar bone were successful. Conclusion Alveolar distraction osteogenesis was a predictable method for restoring alveolar ridge height prior to implant placement. Distraction osteogenesis is ideally suited for recreating missing tissues in the anterior esthetic zone. The bone gain reached at the end of distraction appears to be lasting.
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Reingewirtz, Yves, i Henri Tenenbaum. "Fixed Dental Prosthesis on 4.2 mm Length Rough Implants: A Case Series Report after an Average Loading Time of 33 Months". Journal of Oral Implants 2015 (18.10.2015): 1–7. http://dx.doi.org/10.1155/2015/390974.
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Aim. Several limiting factors encourage the clinician to use short implants. Among those, the presence of limiting anatomical elements and the simplification of surgical procedures are particularly significant. The goal of this study is to analyse the opportunity to extend the use of short implants to extrashort implants with a length less than 5 mm (ESI). Materials and Methods. Seven patients (3 women, 4 men; mean age 60.4 years) received extrashort implants (Straumann Implant, Palatal Orthosystem, length 4.2 mm, diameter 4.1 or 4.8 mm) in severe resorbed edentulous posterior areas. The implants were incorporated in partially fixed dentures. The osseous stability and the attachment level were recorded after a loading period of 22 to 54 months. Results. The results demonstrated a success rate of 100%, stability in the osseous level surrounding implants (mean annual mesial and distal loss of 0.026 mm and 0.105 mm, resp.), and no significant differences in the mean attachment depth between extrashort implants and contralateral teeth or implants (3.7 mm versus 3.55 mm, SD = 0.87). Splinting ESI with natural teeth resulted in significantly more bone resorption than with other implants (P=0.001). Conclusion. This exploratory study on the use of extrashort implants demonstrated good reliability over a loading period of 22 to 54 months.
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Bavetta, Giueseppe, Carlo Paderni, Giorgio Bavetta, Valentina Randazzo, Alessio Cavataio, Francesco Seidita, Ahmad G. A. Khater, Sergio Alexandre Gehrke, Sergio Rexhep Tari i Antonio Scarano. "ISQ for Assessing Implant Stability and Monitoring Healing: A Prospective Observational Comparison between Two Devices". Prosthesis 6, nr 2 (9.04.2024): 357–71. http://dx.doi.org/10.3390/prosthesis6020027.
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Background: With the growing use of dental implants, there is an urgent need to determine a prosthetic placement protocol by assessing implant stability and monitoring healing. Implant Stability Quotient (ISQ) values are produced using dental non-invasive devices through resonance frequency analysis, considered as indicators for measuring primary stability (i.e., at implant placement), monitoring biological stability (osseointegration), and prosthetic loading. A systematic and detailed comparison of ISQ measurement devices, for a given patient population, is lacking in the literature. This aspect is the subject of the present work, with the devices being two that are widely used in clinical practice (Osstell® and Osseo®100). The aim of this study was to evaluate the reliability of ISQ measurement using two standard devices most commonly used in clinical practice and to highlight any differences when comparing measurements at undefined time intervals. Methods: We enrolled 50 patients (16 males and 34 females) with a mean age of 55.4 years, who indicated dental implant placement and met the inclusion criteria. The sample was divided into two equal groups based on bone density: A (D1–D2 bone density) and B (D3–D4 bone density); each had 25 patients with 40 implants. ISQ was measured using two devices: Osstell® and Osseo 100®, at different time points (A: three and B: four follow-ups). Results: All enrolled patients completed the study without adverse events; all implants placed were successful, with no implant failure. In each of the study groups, ISQ values increased gradually with increasing follow-up time, and there was no significant difference between Osstell and Osseo 100 values at follow-up times except for the T1 follow-up in group A. Temporal comparisons for the two devices revealed significant differences in T0 vs. T2 in group A, whereas significant differences existed in T0 vs. T1, T2, and T3 in group B. Our findings indicated that the overall effect significantly depended on bone density rather than on the device used to measure ISQ. Conclusion: Regardless of the devices used, the ISQ measurement effectively monitors healing after implant insertion and allows prosthetic load to be modulated according to the ISQ value, especially when prosthetizing implants placed in fine trabecular bone (D4 or regenerated bone).
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Sitamahlakshmi, K., Narendra Dev Jampani, Vajra Madhuri Songa, Buggapati Lahari i Govardhani Krishna Kumar. "Evaluation of concentrated growth factor as an adjuvant on crestal bone levels around dental implants". International Journal of Research in Medical Sciences 10, nr 11 (28.10.2022): 2501. http://dx.doi.org/10.18203/2320-6012.ijrms20222849.
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Background: Dental implants have a long-term success rate when the osteointegration is maintained with minimal crestal bone loss yearly. The present study evaluates the crestal bone loss around Osseointegrated implants using a concentrated growth factor as an added factor to preserve the crestal bone levels.Methods: Total of 20 patients with a single edentulous site were included in the study and divided into test and control groups. Test group concentrated growth factor is placed along with implant, and the control group implant placed without concentrated growth factor. Soft tissue parameters like modified sulcus bleeding index (mSBI) and modified plaque index (mPI) were done three and nine-month after implant placement. Hard tissue parameters like crestal bone levels (CBL), bone density, and volume were done immediately after implant placement and nine-month of implant placement using cone-beam computed tomography (CBCT).Results: Intragroup comparison from baseline to nine-month in the test group showed a significant difference at nine months at different points compared to the control group in hard and soft tissue parameters. On intergroup comparison was statically insignificant.Conclusions: Concentrated growth factor aids in enhancing bone density and faster healing around dental implants, so it can be used as an advancement in personalized medicine and promoting osseous regeneration by increasing the density and volume of bone around the dental implants.
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Ball, Madeleine, Mohammadreza Aryafar i Serpil Djemal. "Dental implants developing peri-apical disease: a case report". Dental Update 50, nr 8 (2.09.2023): 706–10. http://dx.doi.org/10.12968/denu.2023.50.8.706.
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Dental implants are a treatment option for edentulous spaces. Placing implants involves a surgical procedure requiring a high level of attention to detail. There are risks associated with implants, such as peri-implantitis, failure of osseo-integration and peri-apical implantitis. The latter condition can present after implant placement, and presents radiographically as a radiolucency around the apical part of the implant, similar in appearance to a peri-apical lesion of a non-vital tooth. The aetiology of this condition remains controversial. This article presents some of the current literature and the case report demonstrates the successful surgical management of peri-apical implantitis. CPD/Clinical Relevance: The presentation, potential aetiologies and the successful clinical management of peri-apical implantitis can be useful to clinicians.
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Wilson, Teena, Vivek V Nair, Harsha Kumar K i Kala S. "Navigating the clinical ambiguity of implant placement in two young pubescent patients: an insight from two case reports". International Journal of Dental Materials 05, nr 03 (2023): 94–98. http://dx.doi.org/10.37983/ijdm.2023.5305.
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The horizon of implant dentistry has been ever-expanding owing to its long-term success in rehabilitating partially or completely edentulous cases. This perennial success and efficiency have encouraged clinicians to use osseo-integrated implants to replace teeth lost in children either due to trauma or congenital absence. Although a myriad of studies and publications suggest the placement of implants only after the attainment of skeletal maturity, as the growth-related changes such as remodelling, displacement, and mesial drift can put the future of implant and restoration in jeopardy, the use of implants in young pubescent or adolescent looks promising due to its evident psychological and social advantages over other contemporary alternatives such as a removable prosthesis or resin-bonded bridge. The first case report highlights a 16-year follow-up of a young girl treated at the age of 10 with an implant-supported prosthesis for the replacement of a missing maxillary left central incisor. The second case report centers around a 19-year-old teenage girl who underwent rehabilitation with a permanent fixed prosthesis, replacing her previous implant-supported temporary prosthesis. The implant was initially placed when she was 10 years old.
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Streckbein, P., R. G. Streckbein, J. F. Wilbrand, C. Y. Malik, H. Schaaf, H. P. Howaldt i M. Flach. "Non-linear 3D Evaluation of Different Oral Implant-Abutment Connections". Journal of Dental Research 91, nr 12 (8.10.2012): 1184–89. http://dx.doi.org/10.1177/0022034512463396.
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Micro-gaps and osseous overload in the implant-abutment connection are the most common causes of peri-implant bone resorption and implant failure. These undesirable events can be visualized on standardized three-dimensional finite element models and by radiographic methods. The present study investigated the influence of 7 available implant systems (Ankylos, Astra, Bego, Brånemark, Camlog, Straumann, and Xive) with different implant-abutment connections on bone overload and the appearance of micro-gaps in vitro. The individual geometries of the implants were transferred to three-dimensional finite element models. In a non-linear analysis considering the pre-loading of the occlusion screw, friction between the implant and abutment, the influence of the cone angle on bone strain, and the appearance of micro-gaps were determined. Increased bone strains were correlated with small (< 15°) cone angles. Conical implant-abutment connections efficiently avoided micro-gaps but had a negative effect on peri-implant bone strain. Bone strain was reduced in implants with greater wall thickness (Ankylos) or a smaller cone angle (Bego). The results of our in silico study provide a solid basis for the reduction of peri-implant bone strain and micro-gaps in the implant-abutment connection to improve long-term stability.
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Flanagan, Dennis. "Heat Generated During Seating of Dental Implant Fixtures". Journal of Oral Implantology 40, nr 2 (1.04.2014): 174–81. http://dx.doi.org/10.1563/aaid-joi-d-13-00261.
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Frictional heat can be generated during seating of dental implants into a drill-prepared osteotomy. This in vitro study tested the heat generated by implant seating in dense bovine mandible ramus. A thermocouple was placed approximately 0.5 mm from the rim of the osteotomy during seating of each dental implant. Four diameters of implants were tested. The average temperature increases were 0.075°C for the 5.7-mm-diameter implant, 0.97°C for the 4.7-mm-diameter implant, 1.4°C for the 3.7-mm-diameter implant, and 8.6°C for the 2.5-mm-diameter implant. The results showed that heat was indeed generated and a small temperature rise occurred, apparently by the friction of the implant surface against the fresh-cut bone surface. Bone is a poor thermal conductor. The titanium of the implant and the steel of the handpiece are much better heat conductors. Titanium may be 70 times more heat conductive than bone. The larger diameter and displacement implant may act as a heat sink to draw away any heat produced from the friction of seating the implant at the bone-implant interface. The peak temperature duration was momentary, and not measured, but this was approximately less than 1 second. Except for the 2.5-mm-diameter implants, the temperature rises and durations were found to be below those previously deemed to be detrimental, so no clinically significant osseous damage would be expected during dental implant fixture seating of standard and large-diameter-sized implants. A 2.5-mm implant may generate detrimental heat during seating in nonvital bone, but this may be clinically insignificant in vital bone. The surface area and thermal conductivity are important factors in removing generated heat transfer at the bone-implant interface. The F value as determined by analysis of variance was 69.22, and the P value was less than .0001, demonstrating significant differences between the groups considered as a whole.