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Clinical Oral Investigations
Published in: Clinical Oral Investigations 7/2014

01-09-2014 | Original Article

Qualitative and quantitative evaluation of human dental enamel after bracket debonding: a noncontact three-dimensional optical profilometry analysis

Authors: Fabiano G. Ferreira, Darcy F. Nouer, Nelson P. Silva, Ivana U. Garbui, Lourenço Correr-Sobrinho, Paulo R. A. Nouer

Published in: Clinical Oral Investigations | Issue 7/2014

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Abstract

Objectives

The aim of this study was to undertake a qualitative and quantitative evaluation of changes on enamel surfaces after debonding of brackets followed by finishing procedures, using a high-resolution three-dimensional optical profiler and to investigate the accuracy of the technique.

Materials and methods

The labial surfaces of 36 extracted upper central incisors were examined. Before bonding, the enamel surfaces were subjected to profilometry, recording four amplitude parameters. Brackets were then bonded using two types of light-cured orthodontic adhesive: composite resin and resin-modified glass ionomer cement. Finishing was performed by three different methods: pumice on a rubber cup, fine and ultrafine aluminum oxide discs, and microfine diamond cups followed by silicon carbide brushes. The samples were subsequently re-analyzed by profilometry.

Results

Wilcoxon signed-rank test, Kruskal–Wallis test (p < 0.05) and a posteriori Mann–Whitney U test with Bonferroni correction (p < 0.0167) revealed a significant reduction of enamel roughness when diamond cups followed by silicon carbide brushes were used to finish surfaces that had remnants of resin-modified glass ionomer adhesive and when pumice was used to finish surfaces that had traces of composite resin. Enamel loss was minimal.

Conclusions

The 3D optical profilometry technique was able to provide accurate qualitative and quantitative assessment of changes on the enamel surface after debonding.

Clinical relevance

Morphological changes in the topography of dental surfaces, especially if related to enamel loss and roughness, are of considerable clinical importance. The quantitative evaluation method used herein enables a more comprehensive understanding of the effects of orthodontic bonding on teeth.
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Metadata
Title
Qualitative and quantitative evaluation of human dental enamel after bracket debonding: a noncontact three-dimensional optical profilometry analysis
Authors
Fabiano G. Ferreira
Darcy F. Nouer
Nelson P. Silva
Ivana U. Garbui
Lourenço Correr-Sobrinho
Paulo R. A. Nouer
Publication date
01-09-2014
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 7/2014
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-013-1159-0

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