Effect of adhesive systems and bevel on enamel margin integrity in primary and permanent teeth.
Pediatr Dent
; 30(2): 134-40, 2008.
Article
em En
| MEDLINE
| ID: mdl-18481578
ABSTRACT
PURPOSE:
This study compared the effectiveness of self-etch and total-etch adhesive systems in bonding to the beveled and nonbeveled margins of primary and permanent teeth.METHODS:
This in vitro, factorial-designed study allowed evaluation of 3 factors (1) tooth type; (2) presence of a bevel; and (3) adhesive type. Two preparations, each including a beveled and nonbeveled margin, were completed on buccal surfaces of 60 extracted molars (30 primary and 30 permanent). Preparations were randomly assigned to self-etch or a total-etch adhesive system and restored with resin composite. After thermocycling, teeth were stained with silver nitrate, sectioned, and measured for microleakage. Statistical analysis used a repeated measures analysis of variance.RESULTS:
Beveled margins had less microleakage than nonbeveled margins for primary and permanent teeth (P < .001). Total-etch had less microleakage than self-etch adhesives on primary (53% less, P < .001) and on permanent teeth (22% less, P = .01). Self-etch had considerably more microleakage when enamel margins were not beveled. Comparably less microleakage, however, was found for total-etch and self-etch in restorations with beveled margins.CONCLUSIONS:
Total-etch adhesive and beveled margins resulted in the least microleakage. Margin beveling has a greater effect in minimizing microleakage than the type of adhesive used.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dente Decíduo
/
Colagem Dentária
/
Adesivos Dentinários
/
Preparo da Cavidade Dentária
/
Esmalte Dentário
/
Dente Molar
Tipo de estudo:
Clinical_trials
Limite:
Humans
Idioma:
En
Revista:
Pediatr Dent
Ano de publicação:
2008
Tipo de documento:
Article