Journal Article

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Operative dentistry

Oper.Dent.

May-Jun

25

3

216

222

LR: 20071115; JID: 7605679; 0 (Brilliant Enamel); 0 (Composite Resins); ppublish

United States

0361-7734; 0361-7734

PMID: 11203819

eng

Journal Article; D

Unknown(0)

11203819

The aim of this work was to determine the effects of age, severity of fluorosis, and etching time on the shear bond strength of direct composite resin to human enamel. A total of 117 teeth, freshly extracted from patients in areas of Saudi Arabia endemic for dental fluorosis, were classified according to age ( 0.05). However, the bond was significantly stronger in teeth from patients < 40 years old than from those 40+ years old. Furthermore, at age < 40 years, shear bond strength was significantly higher in teeth etched for 120 seconds than those etched for 60 seconds (p < 0.05), but this was not the case in teeth from the older patients. In teeth with TFI = 1-3, the mode of bond failure was predominantly mixed, but at TFI = 4-6, the bond failure was mostly cohesive in enamel at all ages and etching times. It is, therefore, concluded that both age and etching time affect the shear bond strength of composite resin to fluorosed human enamel.

Acid Etching, Dental/methods, Adhesiveness, Adult, Age Factors, Analysis of Variance, Composite Resins/chemistry, Dental Bonding, Dental Enamel/ultrastructure, Dental Stress Analysis/instrumentation, Fluorosis, Dental/classification/pathology, Humans, Microscopy, Electron, Scanning, Saudi Arabia, Statistics as Topic, Stress, Mechanical, Surface Properties, Time Factors

Ateyah,N., Akpata,E.

Department of Restorative Dental Sciences, King Saud University College of Dentistry, P.O. Box 60169, Riyadh, 11545, Saudi Arabia.

http://vp9py7xf3h.search.serialssolutions.com/?charset=utf-8&pmid=11203819

2000