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Journal articles on the topic 'Profilometry'

To see the other types of publications on this topic, follow the link: Profilometry.

Author: Grafiati

Published: 4 June 2021

Last updated: 29 January 2023

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1

Nikanorov, Nikolai Y., and Elizabeth G. Bobyleva. "CONTROL METHODS OF OPTICAL DETAILS WITH FREE-FORM SURFACES AND KINOFORM ELEMENTS." Interexpo GEO-Siberia 8, no. 1 (July 8, 2020): 118–26. http://dx.doi.org/10.33764/2618-981x-2020-8-1-118-126.

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Methods of control of optical parts with free-form surfaces and kinoform elements under production conditions are considered. Two of the considered methods - interferometric (using holographic compensators) and profilometric (using contact profilometers) - are widely known and used in industrial practice. The method of non-contact profilometry, based on chromatic confocal sensors to control the surface shape of optical parts in industrial conditions, was not previously applied.

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2

A.A., Dedkova, Kireev V. Yu., and Makhiboroda M.A. "Possibilities and limitations of the contact profilometry method for determining the height difference for monitoring topological elements and layer thickness." Nanostructures. Mathematical Physics and Modelling 20, no. 2 (2020): 23–40. http://dx.doi.org/10.31145/2224-8412-2020-20--2-23-40.

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The work shows specific examples of the possibilities and limitations of the contact profilometry method for measuring the relief of micro and nanostructures formed on substrates during the production of microelectronic devices. The requirements to the relief parameters of microelectronic structures are formulated, which make it possible to use contact profilometers for their measurement and control. Methods of forming steps for measuring the thickness of films by contact profilometry are described, and their advantages and disadvantages are analyzed. The method of contact profilometry with optical profilometry and atomic force microscopy is compared.

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3

Moon, Byoung Geun, Na Young Park, Young Chan Ko, and Hyoung Jin Kim. "Characterization of paper surfaces by friction profilometry." BioResources 17, no. 4 (September 12, 2022): 6067–78. http://dx.doi.org/10.15376/biores.17.4.6067-6078.

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Friction profilometry is a powerful technique that is suitable for the surface characterization of paper products. In this technique, a stylus-type contact method that resembles papermaking processes is used for evaluating the quality attributes of products. The surface characterization requires both surface roughness and friction measurements. At present, however, few reports have been available regarding characterization of the friction by the surface profilometric method. The objective of this study was to provide guiding principles of a stylus-type contact surface profilometry for determining the friction properties of paper. Another objective was to introduce the concept of the mean absolute deviation (MAD) from the average coefficient of friction as a new friction parameter.

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4

Soto-Negro, Roberto. "Anterior Eye Profilometry-guided Scleral Contact Lens Fitting in Keratoconus." International Journal of Keratoconus and Ectatic Corneal Diseases 6, no. 2 (2017): 97–100. http://dx.doi.org/10.5005/jp-journals-10025-1150.

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ABSTRACT We report the case of a 35-year-old woman diagnosed with keratoconus since she was 18 years old and wearer of corneal rigid contact lenses (CLs). We refitted the case with the fully scleral CL ICD16.5 (Paragon Vision Sciences) for obtaining not only a successful visual restoration, but also a comfortable wear. We initiated the fitting with the spherical model of the CL, but it failed due to instability of the lens. We confirmed the presence of a clear asymmetry in the anterior scleral geometry in both eyes by using the profilometer eye surface profiler (ESP, Eaglet Eye), with a difference between nasal and temporal sagittal heights of 470 and 170 μm in right and left eyes respectively. Although this profile suggested the need for the fitting of a CL with significant peripheral toricity, we followed the manufacturer's guidelines and performed a trial with a CL of moderate peripheral toricity (125 μm of difference between steep and flat meridian). The stability of the CL failed again and finally a CL with a peripheral toricity close to that measured with the profilometer was fitted. With this lens, good visual performance, lens stability, and comfort was obtained and maintained during a 1-year follow-up. This case suggests that fully scleral CLs fitting might be optimized with the use of corneo-scleral profilometers, minimizing potentially the number of trials. This potential benefit should be investigated further in future studies. How to cite this article Piñero DP, Soto-Negro R. Anterior Eye Profilometry-guided Scleral Contact Lens Fitting in Keratoconus. Int J Kerat Ect Cor Dis 2017;6(2):97-100.

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5

Podbielska, Halina. "Endoscopic profilometry." Optical Engineering 30, no. 12 (1991): 1981. http://dx.doi.org/10.1117/12.56009.

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6

Reid, Roberto E., Eliahu Laor, Bhupendra M. Tolia, Kenneth Donner, and Selwyn Z. Freed. "Intraoperative Profilometry." Journal of Urology 133, no. 2 (February 1985): 203–4. http://dx.doi.org/10.1016/s0022-5347(17)48881-1.

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7

Ślusarski, Łukasz. "Measurement accuracy analysis for microgeometry nanostandards with microinterferometer and stylus profilometer." Bulletin of the Military University of Technology 67, no. 4 (December 31, 2018): 139–48. http://dx.doi.org/10.5604/01.3001.0012.8503.

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The goal of the work, described in this paper, was to examine and analyse measurement capabilities of GUM Length and Angle Department in measurements of step height/depth standards with the values below 1 μm (nanostandards), with 2D, and 3D surface characteristics. Measurements were performed with microinterforometer and stylus profilometer. Keywords: nanometrology, depth/height standards, microinterferometry, contact profilometry.

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8

Marotta, Gianluca, Daniela Fontani, Franco Francini, David Jafrancesco, Maurizio De Lucia, and Paola Sansoni. "Laser Profilometry on Micro-PTC." Energies 15, no. 14 (July 21, 2022): 5293. http://dx.doi.org/10.3390/en15145293.

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Profilometry is useful in detecting surface faults on solar concentrators, which can be imperfectly manufactured, thus affecting system performance. Profilometric analyses are performed on a micro-parabolic trough collector (m-PTC), with reduced sizes and greater mirror curvature than a usual PTC. The peculiar dimensions and shape of this micro-PTC request to develop a specific configuration of laser profilometry. It includes a laser diode with a converging lens placed in front of it, ensuring that the mirror curvature does not affect the beam reflection. A new method to calculate the spot position furnishes the reflected beam center even if it lies outside the target, giving it a virtual expansion. The profile is assessed with an iterative calculation, starting from a first point, physically measured. The results are the 3D profile reconstruction of the parabolic mirror and a map of the slope error for each mirror point. It also estimates the intercept factor, a parameter fundamental to optimize the m-PTC system, whose value is in agreement with a structured light measurement on the same object. This intercept factor was obtained averaging the local intercept factor calculated for each mirror point, which individuates the mirror portions not focusing the sunrays on the tube.

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9

HAYASAKI, Yoshio. "Frequency Comb Profilometry." Journal of the Japan Society for Precision Engineering 84, no. 8 (August 5, 2018): 701–5. http://dx.doi.org/10.2493/jjspe.84.701.

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10

Fang, Qiang, and Sunde Zheng. "Linearly coded profilometry." Applied Optics 36, no. 11 (April 10, 1997): 2401. http://dx.doi.org/10.1364/ao.36.002401.

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11

Greivenkamp, John E. "Optical reference profilometry." Optical Engineering 40, no. 12 (December 1, 2001): 2845. http://dx.doi.org/10.1117/1.1419192.

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12

Su, Xianyu, and Wenjing Chen. "Fourier transform profilometry:." Optics and Lasers in Engineering 35, no. 5 (May 2001): 263–84. http://dx.doi.org/10.1016/s0143-8166(01)00023-9.

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13

Rai, R. S., and E. Versi. "Urethral pressure profilometry." International Urogynecology Journal 2, no. 4 (December 1991): 222–27. http://dx.doi.org/10.1007/bf01923393.

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14

Fidan, Sinan. "Tribological performance of polymethyl methacrylate as an aviation polymer." Journal of Polymer Engineering 34, no. 6 (August 1, 2014): 569–79. http://dx.doi.org/10.1515/polyeng-2014-0002.

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Abstract Polymethyl methacrylate (PMMA) is one of the most popular synthetic polymers in aircraft windshields as an alternative to glass, due to its lightweight, high transparency and impact-resistant characteristics. The erosion behavior of PMMA is critical when used as an alternative to glass in an aircraft windshield. This paper presents experimental data on the effects of particle size, velocity and impingement angle on the roughness of PMMA, using 3D optical profilometry after solid particle erosion tests. Particular attention is paid to determining the different morphologies of imprints and cracks with regard to particle size, impact velocity and impingement angle. It is further shown that the removed volume in overlapping impacts measured by 3D profilometry is captured well. It is demonstrated that maximum erosion rate occurred at a 30° impingement angle and correlates well with the ductile erosion behavior of PMMA. Detailed worn surface analysis was performed using 3D optical profilometer scanning to investigate effects of particle size, velocity and impingement angle on the roughness of PMMA.

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15

Marotta, Gianluca, Paola Sansoni, Franco Francini, David Jafrancesco, Maurizio De Lucia, and Daniela Fontani. "Structured Light Profilometry on m-PTC." Energies 13, no. 21 (October 29, 2020): 5671. http://dx.doi.org/10.3390/en13215671.

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In concentrating solar systems, it is essential to study the optical losses of the collectors. A fundamental parameter is the intercept factor, namely, the fraction of sunrays reflected by the concentrator that reaches the receiver. Optical profilometry studies the relationship between the collector profile and the intercept factor, which influences the collection efficiency. Profilometric analyses were performed on a micro-parabolic trough collector (m-PTC), with reduced sizes and greater mirror curvature than a usual PTC. The proposed technique projects a luminous pattern (structured light) both on the collector with an opaque covering and on a flat reference plane. Measurement set-up and calibration technique were developed for m-PTC. A program coded in Python analyzed the images and reconstructs the mirror profile. The tilted reference plane was reconstructed using an original geometric model and a calibration procedure. The focal length of each parabolic section was calculated, providing information on surface defects in the mirror. An important parameter obtained was the displacement of the focus of the parabola with respect to the ideal position. Using this value, the intercept factor was estimated to be 0.89. The proposed technique was validated by comparing the results with an independent profilometric study applied to the same m-PTC.

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16

Elyashiv, Ariel, and Sarena Wiesner. "OPTICAL PROFILOMETRY AS A METHOD FOR DETECTING INDENTED WRITING." Criminalistics and Forensics, no. 66 (2021): 629–45. http://dx.doi.org/10.33994/kndise.2021.66.47.

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The current methodology for indented writing detection involves electrostatic detection apparatus (ESDA) processing and oblique light. While commonly used in forensics analysis, ESDA has several drawbacks, including its unsuitability for documents of certain shapes and densities, the damage it occasionally causes to evidence, its need for prior humidification in order to process documents, and the ozone it creates. In this study we evaluated optical profilometry as an alternative to ESDA. We tested several optical profilometer brands and showed their capacity for detecting very slight indentations, even to the magnitude of 8µm. We also obtained the clear resolution of a 3D image of this writing.

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17

Che, Jun, Yanxia Sun, Xiaojun Jin, and Yong Chen. "3D Measurement of Discontinuous Objects with Optimized Dual-frequency Grating Profilometry." Measurement Science Review 21, no. 6 (October 26, 2021): 197–204. http://dx.doi.org/10.2478/msr-2021-0027.

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Abstract Three-dimensional profilometry tends to be less effective at measuring discontinuous surfaces. To overcome this problem, an optimized profilometry based on fringe projection is proposed in this paper. Due to the limitation of the shooting angle, there are projection blind spots on the surface of discontinuous objects. Since the noises and unwrapping errors are always localized at the projection blind spots, an algorithm is designed to determine the blind spots automatically with the light intensity difference information. Besides, in order to improve the measurement accuracy, a processing scheme is introduced to deal with the local height distortion introduced by the dual-frequency grating profilometry. Lots of measurement tests on various surfaces are carried out to assess the optimized profilometry, and experimental results indicate that the modified profilometry system works more robust with high reliability and accuracy in measuring different kinds of surfaces, especially discontinuous ones.

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18

Vital Júnior, Pedro Félix, José Luiz Martins, and Fábio Luís Peterlini. "Posterior sagittal anorectoplasty in anorectal anomalies: clinical, manometric and profilometric evaluation." Sao Paulo Medical Journal 125, no. 3 (May 2007): 163–69. http://dx.doi.org/10.1590/s1516-31802007000300007.

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CONTEXT AND OBJECTIVE: Anorectal malformations comprise a spectrum of anomalies that continue to be difficult to treat, even today. The aim was to evaluate the fecal continence of children who underwent posterior sagittal anorectoplasty due to anorectal malformations, via computerized anorectal manometry and profilometry. DESIGN AND SETTING: Prospective study at Universidade Federal de São Paulo. METHOD: 82 patients (56.1% boys; 43.9% girls) of mean age 85.5 months were evaluated. They were divided into continent, partially continent and incontinent groups. Age, sex, manometric variables and profilometric parameters were studied. The results were statistically analyzed. RESULTS: Among the 82 patients, 37.8% were continent, 25.6% were partially continent and 36.6% were incontinent. The overall mean resting pressure was 22 mmHg, and the means for the continent, partially continent and incontinent groups were, respectively, 30.7 mmHg, 23 mmHg and 14.7 mmHg. The overall mean pressure response to voluntary contraction was 56 mmHg, and the means for the groups were 65.4 mmHg, 55.8 mmHg and 46.6 mmHg, respectively. The rectosphincteric reflex was absent in 82.9% of the cases. In the profilometry analysis for all patients together, blue (20 to 50 mmHg) and yellow (50 to 80 mmHg) were predominant, and there was a similar distribution for the continent and partially continent patients. However, among the incontinent patients, green (< 20 mmHg) and blue prevailed. CONCLUSIONS: Manometric and computerized profilometric analyses were an excellent method for postoperative evaluations on patients with intermediate and high anorectal anomalies, and for therapeutic planning.

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19

Zhao, Hong, Chunwei Zhang, Changquan Zhou, Kejian Jiang, and Meiqi Fang. "Circular fringe projection profilometry." Optics Letters 41, no. 21 (October 24, 2016): 4951. http://dx.doi.org/10.1364/ol.41.004951.

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20

Pribošek, Jaka, Janez Diaci, and Stefan Sinzinger. "Aperture-coded confocal profilometry." Optics Letters 41, no. 23 (November 28, 2016): 5523. http://dx.doi.org/10.1364/ol.41.005523.

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21

Benninga, M. A., O. B. Wijers, C. W. P. van der Hoeven, J. A. J. M. Taminiau, P. J. Klopper, G. N. J. Tytgat, and L. M. A. Akkermans. "Manometry, Profilometry, and Endosonography." Journal of Pediatric Gastroenterology and Nutrition 18, no. 1 (January 1994): 68–77. http://dx.doi.org/10.1097/00005176-199401000-00012.

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22

Chang, Wei-Yao, Fan-Hsi Hsu, Kun-Huang Chen, Jing-Heng Chen, and Ken Y. Hsu. "Heterodyne moiré surface profilometry." Optics Express 22, no. 3 (January 31, 2014): 2845. http://dx.doi.org/10.1364/oe.22.002845.

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23

Arhab, S., G. Soriano, K. Belkebir, A. Sentenac, and H. Giovannini. "Full wave optical profilometry." Journal of the Optical Society of America A 28, no. 4 (March 15, 2011): 576. http://dx.doi.org/10.1364/josaa.28.000576.

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24

Arhab, S., H. Giovannini, K. Belkebir, and G. Soriano. "Full polarization optical profilometry." Journal of the Optical Society of America A 29, no. 8 (July 11, 2012): 1508. http://dx.doi.org/10.1364/josaa.29.001508.

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25

Mao, Xianfu, Wenjing Chen, and Xianyu Su. "Improved Fourier-transform profilometry." Applied Optics 46, no. 5 (January 25, 2007): 664. http://dx.doi.org/10.1364/ao.46.000664.

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26

Salas, Luis. "Profilometry by fringe projection." Optical Engineering 42, no. 11 (November 1, 2003): 3307. http://dx.doi.org/10.1117/1.1607968.

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27

Li, Chengmeng, Yiping Cao, Cheng Chen, Yingying Wan, Guangkai Fu, and Yapin Wang. "Computer-generated Moiré profilometry." Optics Express 25, no. 22 (October 18, 2017): 26815. http://dx.doi.org/10.1364/oe.25.026815.

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28

Rodríguez-Vera, R., and M. Servín. "Phase locked loop profilometry." Optics & Laser Technology 26, no. 6 (January 1994): 393–98. http://dx.doi.org/10.1016/0030-3992(94)90050-7.

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29

Leonhardt, K., H. J. Jordan, and H. J. Tiziani. "Micro-Ellipso-Height-Profilometry." Optics Communications 80, no. 3-4 (January 1991): 205–9. http://dx.doi.org/10.1016/0030-4018(91)90251-8.

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30

Sullivan, Maryrose P., Craig V. Comiter, and Subbarao V. Yalla. "MICTURITIONAL URETHRAL PRESSURE PROFILOMETRY." Urologic Clinics of North America 23, no. 2 (May 1996): 263–78. http://dx.doi.org/10.1016/s0094-0143(05)70310-4.

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31

Mangalore, Ashish Rao, Chandra Sekhar Seelamantula, and Chetan Singh Thakur. "Neuromorphic Fringe Projection Profilometry." IEEE Signal Processing Letters 27 (2020): 1510–14. http://dx.doi.org/10.1109/lsp.2020.3016251.

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32

Chen, Wenjing, Qiuju Shen, and Min Zhong. "Comparison of 2D S-Transform Profilometry and 2D Windowed Fourier Transform Profilometry." Optik 124, no. 24 (December 2013): 6732–36. http://dx.doi.org/10.1016/j.ijleo.2013.05.182.

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33

Li, Yufeng, and F. E. Talke. "Limitations and Corrections of Optical Profilometry in Surface Characterization of Carbon Coated Magnetic Recording Disks." Journal of Tribology 112, no. 4 (October 1, 1990): 670–77. http://dx.doi.org/10.1115/1.2920314.

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The thickness of a thin absorbing carbon step on a strongly absorbing magnetic layer is measured using contact stylus and noncontact optical profilometer instrumentation, The dependence of optical profilometer measurements on carbon film thickness and optical properties of both the magnetic layer and the carbon film is investigated, and the error in the optical measurement is evaluated as a function of the phase shift of the light reflected from the sample surface. A marked improvement in the accuracy of the step height measurement is obtained if account is taken of the phase shift of the light reflected from the carbon overcoat and the magnetic substrate, respectively. The measurement of surface roughness of thin films on strongly absorbing substrates is discussed and the use of a dual wavelength technique is proposed to enhance the accuracy of optical profilometry.

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34

Lagubeau, Guillaume, Pablo Cobelli, Tomasz Bobinski, Agnès Maurel, Vincent Pagneux, and Philippe Petitjeans. "Empirical mode decomposition profilometry: small-scale capabilities and comparison to Fourier transform profilometry." Applied Optics 54, no. 32 (November 3, 2015): 9409. http://dx.doi.org/10.1364/ao.54.009409.

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35

Li, Beiwen, Ziping Liu, and Song Zhang. "Motion-induced error reduction by combining Fourier transform profilometry with phase-shifting profilometry." Optics Express 24, no. 20 (September 28, 2016): 23289. http://dx.doi.org/10.1364/oe.24.023289.

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36

Dou Yunfu, 窦蕴甫, 苏显渝 Su Xianyu, and 陈延非 Chen Yanfei. "A Fast Modulation Measurement Profilometry." Acta Optica Sinica 29, no. 7 (2009): 1858–62. http://dx.doi.org/10.3788/aos20092907.1858.

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37

Stortelder, Reinier, and Kyriakos Telamitsi. "Precise MicroVault designing utilizing profilometry." Contact Lens and Anterior Eye 44, no. 1 (February 2021): 16. http://dx.doi.org/10.1016/j.clae.2020.12.054.

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38

Liu, Chun Yuan, Bo Zhou, and Xiao Min Zhao. "A Modified Wavelet Transform Profilometry." Advanced Materials Research 136 (October 2010): 140–43. http://dx.doi.org/10.4028/www.scientific.net/amr.136.140.

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To overcome the noisy background comes from surface reflection, spectrum overlapping and dust noisy. In this paper, a novel modified continuous wavelet transform profilometry is proposed, which employs a fringe image and a flat image to eliminate the background. Both the fringe and flat pattern are projected onto the object by a projector. With the subtraction of the flat image from the fringe image, the background is completely removed and the spectrum overlapping in the frequency domain is prevented. Experimental results showed that the proposed method got a better result than the traditional CWT.

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39

Tornero-Martínez, N., G. Trujillo-Schiaffino, M. Anguiano-Morales, P. G. Mendoza-Villegas, D. P. Salas-Peimbert, and L. F. Corral-Martínez. "Color profilometry techniques: A review." Optica Pura y Aplicada 51, no. 4 (December 23, 2018): 1–26. http://dx.doi.org/10.7149/opa.51.4.51001.

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40

Lai, Cheng-Chung, and I.-Jen Hsu. "Surface profilometry with composite interferometer." Optics Express 15, no. 21 (2007): 13949. http://dx.doi.org/10.1364/oe.15.013949.

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41

Nikkels-Tassoudji, N., C. Piérard-Franchimont, P. De Doncker, and G. E. Piérard. "Optical Profilometry of Nail Dystrophies." Dermatology 190, no. 4 (1995): 301–4. http://dx.doi.org/10.1159/000246721.

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42

Zhao, Hong, Chunwei Zhang, Changquan Zhou, Kejian Jiang, and Meiqi Fang. "Circular fringe projection profilometry: erratum." Optics Letters 42, no. 2 (January 13, 2017): 370. http://dx.doi.org/10.1364/ol.42.000370.

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43

Ochoa, Noé Alcalá, and César Augusto García-Isáis. "Improvement on fringe projection profilometry." Optical Engineering 54, no. 10 (October 28, 2015): 104114. http://dx.doi.org/10.1117/1.oe.54.10.104114.

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44

Perrin, Stephane, Audrey Leong-Hoï, Sylvain Lecler, Pierre Pfeiffer, Ivan Kassamakov, Anton Nolvi, Edward Hæggström, and Paul Montgomery. "Microsphere-assisted phase-shifting profilometry." Applied Optics 56, no. 25 (August 30, 2017): 7249. http://dx.doi.org/10.1364/ao.56.007249.

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45

Brown, A. J. C., and F. Gilbert. "Industrial applications for optical profilometry." Sensor Review 10, no. 1 (January 1990): 35–37. http://dx.doi.org/10.1108/eb007811.

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46

Wu, Ying-chun, Yi-ping Cao, Zhen-fen Huang, Ming-teng Lu, and De-liang Chen. "Improved composite Fourier transform profilometry." Optics & Laser Technology 44, no. 7 (October 2012): 2037–42. http://dx.doi.org/10.1016/j.optlastec.2012.03.030.

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47

Madsen, Lars S., Christopher Baker, Halina Rubinsztein-Dunlop, and Warwick P. Bowen. "Nondestructive Profilometry of Optical Nanofibers." Nano Letters 16, no. 12 (November 21, 2016): 7333–37. http://dx.doi.org/10.1021/acs.nanolett.6b02460.

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48

Zheng, Rui-Hua, Yu-Xiao Wang, Xue-Ru Zhang, and Ying-Lin Song. "Two-dimensional phase-measuring profilometry." Applied Optics 44, no. 6 (February 20, 2005): 954. http://dx.doi.org/10.1364/ao.44.000954.

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49

RAO, C. BABU, BALDEV RAJ, and D. K. BHATTACHARYA. "An Optical Method for Profilometry." Experimental Techniques 9, no. 12 (December 1985): 31–34. http://dx.doi.org/10.1111/j.1747-1567.1985.tb02442.x.

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50

Schlueter, Nadine, Katja Jung, and Carolina Ganss. "Profilometric Quantification of Erosive Tissue Loss in Dentine: A Systematic Evaluation of the Method." Caries Research 50, no. 5 (2016): 443–54. http://dx.doi.org/10.1159/000448147.

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Abstract:

Profilometry is established in erosion research. However, in the case of dentine, factors such as the demineralised organic matrix, desiccation effects, or type of measuring device may have an impact on the measurement results, which were investigated in the present study. Dentine specimens were eroded with citric acid (1%, pH 2.6) for 5, 10, 15, 20, 30, 60, 90, and 120 min (n = 15 each). For each specimen, tissue loss was determined under various conditions - before/after enzymatic matrix removal, under standardised wet and desiccated (2/10 min) conditions - with non-contact and contact profilometry. In the presence of matrix, under wet conditions, non-contact profilometry revealed almost no tissue loss. Values (mean ± SD) ranged between 0.3 ± 0.7 µm (5 min) and 3.4 ± 1.5 µm (120 min). Contact profilometry increased values significantly (range: 2.9 ± 1.1 to 30.6 ± 5.8 µm). Desiccation (2 min) significantly increased values, except for 5 min of demineralisation, for non-contact profilometry (range: 0.8 ± 1.3 to 22.1 ± 5.5 µm), and decreased values for contact profilometry up to 15 min and increased them as from 90 min (range: 0.9 ± 1.2 to 33.0 ± 5.5 µm); results after 10 min of desiccation were comparable. After the removal of matrix, under wet conditions, values were distinctly higher (non-contact: 3.5 ± 0.8-55.5 ± 7.4 µm; contact: 4.2 ± 1.3-57.8 ± 8.1 µm). Desiccation (10 min) lowered values by about 2-5 µm due to specimen deformation. Bland-Altman comparisons of various outcomes revealed distinct significant proportional and relative biases. Loss of mineralised tissue cannot be adequately quantified in the presence of matrix. Desiccation leads to matrix shrinkage and specimen deformation. Most importantly, tissue loss values obtained in the presence or absence of matrix are not proportional. Therefore, if mineral status is the target criterion, matrix removal and moisture control are prerequisites.

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