Effects of enamel abrasion, salivary pellicle, and measurement angle on the optical assessment of dental erosion

Lussi, Adrian; Bossen, Anke; Höschele, Christoph; Beyeler, Barbara; Megert, Brigitte; Meier, Christoph; Rakhmatullina, Ekaterina (2012). Effects of enamel abrasion, salivary pellicle, and measurement angle on the optical assessment of dental erosion. Journal of biomedical optics, 17(9), p. 97009. Bellingham, Wash.: SPIE International Society for Optical Engineering 10.1117/1.JBO.17.9.097009

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The present study assessed the effects of abrasion, salivary proteins, and measurement angle on the quantification of early dental erosion by the analysis of reflection intensities from enamel. Enamel from 184 caries-free human molars was used for in vitro erosion in citric acid (pH 3.6). Abrasion of the eroded enamel resulted in a 6% to 14% increase in the specular reflection intensity compared to only eroded enamel, and the reflection increase depended on the erosion degree. Nevertheless, monitoring of early erosion by reflection analysis was possible even in the abraded eroded teeth. The presence of the salivary pellicle induced up to 22% higher reflection intensities due to the smoothing of the eroded enamel by the adhered proteins. However, this measurement artifact could be significantly minimized (p<0.05) by removing the pellicle layer with 3% NaOCl solution. Change of the measurement angles from 45 to 60 deg did not improve the sensitivity of the analysis at late erosion stages. The applicability of the method for monitoring the remineralization of eroded enamel remained unclear in a demineralization/remineralization cycling model of early dental erosion in vitro.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry

UniBE Contributor:

Lussi, Adrian; Beyeler, Barbara; Megert, Brigitte and Rakhmatullina, Ekaterina




SPIE International Society for Optical Engineering




Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 14:30

Last Modified:

25 Jan 2017 12:16

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PubMed ID:


Web of Science ID:





https://boris.unibe.ch/id/eprint/11217 (FactScience: 217243)

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