Publication year
2012Source
Journal of Dentistry, 40, 7, (2012), pp. 603-608ISSN
Annotation
1 juli 2012
Publication type
Article / Letter to editor

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Organization
Dentistry
Journal title
Journal of Dentistry
Volume
vol. 40
Issue
iss. 7
Page start
p. 603
Page end
p. 608
Subject
NCEBP 7: Effective primary care and public healthAbstract
The aim of this study was to assess a two-dimensional method to monitor occlusal tooth wear quantitatively using a commercially available ordinary flatbed scanner. MATERIALS AND METHODS: A flatbed scanner, measuring software and gypsum casts were used. In Part I, two observers (A and B) independently traced scans of marked wear facets of ten sets of casts in two sessions (test and retest). In Part II, three other sets of casts were duplicated and two observers (C and D) marked wear facets and traced the scanned images independently. Intra- and inter-observer agreement was determined comparing measured values (mm(2)) in paired T-tests. Duplicate measurement errors (DME) were calculated. RESULTS: In Part I the test and retest values (10 casts, 218 teeth) of observer A and B did not differ significantly (A: p = 0.289; B: p = 0.666); correlation coefficients were 0.998 (A) and 0.999 (B). "Tracing wear facets" showed a DME of 0.30 mm(2) for observer A and 0.15 mm(2) for observer B. In Part II, assessment of 70 teeth resulted in correlation coefficients of 0.994 for observer C and 0.997 for observer D; no differences between test and retest values were found for C (p = 0.061), although D differed significantly (p = 0.000). The DME for "marking and tracing wear facets" was 0.39 mm(2) (C) and 0.27 mm(2) (D). DME for inter-observer agreement were 0.45 mm(2) (test) and 0.42 mm(2) (re-test). CONCLUSION AND CLINICAL RELEVANCE: We conclude that marking and tracing of occlusal wear facets to assess occlusal tooth wear quantitatively can be done accurately and reproducibly.
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- Academic publications [204024]
- Faculty of Medical Sciences [80459]
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