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Australian orthodontic journal
Volume 52, Issue 1, Ma y 5002, Pages 12-52
Effect of adhesive types on enamel discolouration around
orthodontic brackets.
Jahanbin, A., Ameri, H., Khaleghimoghaddam , R.
Department of Orthodontics , Mashhad Dental School Research Center, Mashhad University of Medical Sciences,
Iran.
Abstract
BACKGROUND: Unsightly colour changes may occur in the enamel around bonded orthodontic brackets . AIM: To
determine the enamel colour changes around orthodontic brackets bonded with different adhesives . METHODS: One
hundred extracted upper first premolars were divided into five equal groups . Fiducial holes were drilled in the buccal
and palatal surfaces of the teeth and metal orthodontic brackets were bonded to the buccal surfaces with different
combinations of adhesives and primers . The teeth were immersed in a tea-coffee solution for one week. The brackets
were then debonded and the teeth polished. The colour of the enamel surface was measured around each fiducial
hole before bonding (baseline), after debonding and after polishing. The colour differences (deltaE) were compared
using one-way ANOVA and the paired t-test. RESULTS: There were no significant differences between the five
adhesive groups in baseline-debonding deltaE and baseline-polishing deltaE, but statistically significant differences
were found between the baseline-debonding deltaE on the buccal and palatal surfaces and the baseline -debonding
deltaE versus baseline-polishing deltaE on the buccal surfaces . Although statistically significant, the colour changes
would not be visible to many observers. Approximately 52 per cent of the staining was attributed to the enamel
components. CONCLUSIONS: The type of adhesive and the methods of application had no effect on enamel colour
change. Most of the colour change was attributed to uptake of stain by the components of the enamel, not the resin
tags.
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Indexed Keywords
EMTREE drug terms: resin cement
EMTREE medical terms: article; coffee; colorimetry; dental acid etching; dental bonding; drug effect; enamel;
human; metabolism; methodology; orthodontic device; premolar tooth; tea; tooth discoloration
MeSH: Acid Etching, Dental; Bicuspid; Coffee; Colorimetry; Dental Bonding; Dental Enamel; Humans; Orthodontic
Brackets; Resin Cements; Tea; Tooth Discoloration
Medline is the source for the MeSH terms of this document.
Chemicals and CAS Registry Numbers: Coffee; Resin Cements ; Tea
ISSN: 02052200Source Type : Journal Original language : English
PubMed ID: 12426622Document Type : Article