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Mapping a non-carious cervical lesion using stereo-imagery and dental casts incorporating optical texture
Citation
Grenness, MJ and Tyas, MJ and Osborn, JE, Mapping a non-carious cervical lesion using stereo-imagery and dental casts incorporating optical texture, The Journal of Dentistry, 37, (3) pp. 191-197. ISSN 0300-5712 (2009) [Refereed Article]
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DOI: doi:10.1016/j.jdent.2008.11.012
Abstract
Objectives: Recent advances in digital photogrammetry have enabled a new approach to
high resolution mapping of tooth surfaces. The aim of this study was to assess the accuracy
and the precision of a new system using automatic digital stereo-photogrammetry combined
with an experimental casting material and to measure tooth surface loss in a noncarious
cervical lesion.
Methods: A test object and tooth replicas incorporating optical texture obtained at baseline,
one and 2 years were imaged with a pre-calibrated stereocamera. The stereoimagery was
then processed with digital photogrammetric software to automatically generate digital
surface models. Test object models were analysed for accuracy and precision and tooth
surface models were aligned with point cloud analysis software and tooth surface loss
determined.
Results: Replicas were mapped to an accuracy of (6 :i:: 13) !-I,m. The sensiLivity of change
detection on tooth replicas was 10 lJ.m with change ranging from 40 to 70 lJ.m per annum in a
discrete part of the lesion.
Conclusions: In the case examined, the change detection data were of sufficient accuracy and
resolution to draw meaningful conclusions about the spatial distribution and quantum of
tooth hard tissue loss. The results of this investigation suggest that annual change detection
studies will provide a clearer picture of the pattern of tooth surface loss and, in combination
with other analytical techniques, a more detailed explanation of the natural history of these
lesions.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | dental photogrammetry |
| Research Division: | Biomedical and Clinical Sciences |
| Research Group: | Dentistry |
| Research Field: | Dental materials and equipment |
| Objective Division: | Health |
| Objective Group: | Public health (excl. specific population health) |
| Objective Field: | Dental health |
| UTAS Author: | Grenness, MJ (Dr Malcolm Grenness) |
| UTAS Author: | Osborn, JE (Dr Jon Osborn) |
| ID Code: | 59493 |
| Year Published: | 2009 |
| Web of Science® Times Cited: | 8 |
| Deposited By: | Geography and Environmental Studies |
| Deposited On: | 2009-12-03 |
| Last Modified: | 2010-08-19 |
| Downloads: | 61 View Download Statistics |
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