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Quantification of incisal tooth wear in upper anterior teeth : conventional vs new method using toolmakers microscope and a three-dimensional measuring technique
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Al-Omiri, Mahmoud K., Sghaireen, Mohd G., AlZarea, Bader K. and Lynch, Edward, Dr. (2013) Quantification of incisal tooth wear in upper anterior teeth : conventional vs new method using toolmakers microscope and a three-dimensional measuring technique. Journal of Dentistry, Volume 41 (Number 12). pp. 1214-1221. doi:10.1016/j.jdent.2013.08.022 ISSN 03005712.
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Official URL: http://dx.doi.org/10.1016/j.jdent.2013.08.022
Abstract
Objectives
This study aimed to quantify tooth wear in upper anterior teeth using a new CAD-CAM Laser scanning machine, tool maker microscope and conventional tooth wear index.
Methods
Fifty participants (25 males and 25 females, mean age=25±4 years) were assessed for incisal tooth wear of upper anterior teeth using Smith and Knight clinical tooth wear index (TWI) on two occasions, the study baseline and 1 year later. Stone dies for each tooth were prepared and scanned using the CAD-CAM Laser Cercon System. Scanned images were printed and examined under a toolmaker microscope to quantify tooth wear and then the dies were directly assessed under the microscope to measure tooth wear. The Wilcoxon Signed Ranks Test was used to analyze the data.
Results
TWI scores for incisal edges were 0–3 and were similar at both occasions. Score 4 was not detected. Wear values measured by directly assessing the dies under the toolmaker microscope (range=113–150μm, mean=130±20μm) were significantly more than those measured from Cercon Digital Machine images (range=52–80μm, mean=68±23μm) and both showed significant differences between the two occasions.
Conclusions
Wear progression in upper anterior teeth was effectively detected by directly measuring the dies or the images of dies under toolmaker microscope. Measuring the dies of worn dentition directly under tool maker microscope enabled detection of wear progression more accurately than measuring die images obtained with Cercon Digital Machine. Conventional method was the least sensitive for tooth wear quantification and was unable to identify wear progression in most cases.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School | ||||
| Journal or Publication Title: | Journal of Dentistry | ||||
| Publisher: | Elsevier Ltd | ||||
| ISSN: | 03005712 | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Volume: | Volume 41 | ||||
| Number: | Number 12 | ||||
| Page Range: | pp. 1214-1221 | ||||
| DOI: | 10.1016/j.jdent.2013.08.022 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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