Application of the specular and diffuse reflection analysis for in vitro diagnostics of dental erosion: correlation with enamel softening, roughness, and calcium release

Rakhmatullina, Ekaterina; Bossen, Anke; Höschele, Christoph; Wang, Xiaojie; Beyeler, Barbara; Meier, Christoph; Lussi, Adrian (2011). Application of the specular and diffuse reflection analysis for in vitro diagnostics of dental erosion: correlation with enamel softening, roughness, and calcium release. Journal of biomedical optics, 16(10), p. 107002. Bellingham, Wash.: SPIE International Society for Optical Engineering 10.1117/1.3631791

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We present assembly and application of an optical reflectometer for the analysis of dental erosion. The erosive procedure involved acid-induced softening and initial substance loss phases, which are considered to be difficult for visual diagnosis in a clinic. Change of the specular reflection signal showed the highest sensitivity for the detection of the early softening phase of erosion among tested methods. The exponential decrease of the specular reflection intensity with erosive duration was compared to the increase of enamel roughness. Surface roughness was measured by optical analysis, and the observed tendency was correlated with scanning electron microscopy images of eroded enamel. A high correlation between specular reflection intensity and measurement of enamel softening (r(2) ? -0.86) as well as calcium release (r(2) ? -0.86) was found during erosion progression. Measurement of diffuse reflection revealed higher tooth-to-tooth deviation in contrast to the analysis of specular reflection intensity and lower correlation with other applied methods (r(2) = 0.42-0.48). The proposed optical method allows simple and fast surface analysis and could be used for further optimization and construction of the first noncontact and cost-effective diagnostic tool for early erosion assessment in vivo.

Item Type:

Journal Article (Original Article)

Division/Institute:

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

UniBE Contributor:

Rakhmatullina, Ekaterina; Wang, Xiaojie; Beyeler, Barbara and Lussi, Adrian

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1083-3668

Publisher:

SPIE International Society for Optical Engineering

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 14:15

Last Modified:

25 Jan 2017 12:16

Publisher DOI:

10.1117/1.3631791

PubMed ID:

22029364

Web of Science ID:

000297465200024

BORIS DOI:

10.7892/boris.4380

URI:

https://boris.unibe.ch/id/eprint/4380 (FactScience: 208574)

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