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Evaluation of tooth wear by estimating enamel thickness with quantitative light-induced fluorescence technology

Authors
 Sang-Kyeom Kim  ;  Seok-Woo Park  ;  Hyung-Suk Lee  ;  Eun-Song Lee  ;  Elbert de Josselin de Jong  ;  Baek-Il Kim 
Citation
 PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY, Vol.25 : 319-324, 2019 
Journal Title
 PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY 
ISSN
 1572-1000 
Issue Date
2019
Keywords
QLF ; auto-fluorescence ; occlusal wear ; quantitative light-induced fluorescence
Abstract
BACKGROUND: Various techniques have been suggested to quantitatively assess tooth wear; most have limited clinical application. The first aim of this in vitro study was to estimate the residual enamel thickness of teeth with various degrees of occlusal wear using quantitative light-induced fluorescence (QLF). The second aim was to identify relationships between the fluorescence parameters of QLF and the conventional tooth wear index (TWI) system. METHODS: Sixty-nine extracted permanent premolars and molars with initial stages of tooth wear (TWI score 1a-2: enamel wear to dentin exposure) were used. Two blinded and trained examiners participated in evaluation procedures. Occlusal QLF-digital (QLF-D) images were acquired for selecting area of interest (AOI) and calculating fluorescence for occlusal tooth wear (ΔFwear) of the AOI by the first examiner. Each specimen was cross-sectioned in the buccal-lingual direction. Enamel thickness from images obtained by stereomicroscopy and TWI of each sample was determined by the second examiner. Spearman correlation was used to determine the relationship of ΔFwear with enamel thickness and TWI. ΔFwear values were compared between histological scores with the Mann-Whitney U test. RESULTS: Seventy-six AOIs were analyzed. As enamel thickness decreased, ΔFwear values significantly increased and strongly correlated with enamel thickness (Spearman rho = -0.825, P < 0.01). There were significant differences in ΔFwear values among TWI scores (P < 0.01); ΔFwear strongly correlated with TWI (Spearman rho = 0.753, P < 0.01). CONCLUSIONS: ΔFwear values, which denote fluorescence difference by using QLF, showed a strong correlation with residual enamel thickness and tooth wear severity.
Full Text
https://www.sciencedirect.com/science/article/pii/S1572100018303521
DOI
10.1016/j.pdpdt.2019.01.016
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Preventive Dentistry and Public Oral Health (예방치과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Baek Il(김백일) ORCID logo https://orcid.org/0000-0001-8234-2327
Kim, Sang-Kyeom(김상겸) ORCID logo https://orcid.org/0000-0002-6380-5039
Park, Seok-Woo(박석우) ORCID logo https://orcid.org/0000-0001-8869-5465
Lee, Eun Song(이은송) ORCID logo https://orcid.org/0000-0002-2949-4783
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/167485
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