Evaluating resin-enamel bonds by microshear and microtensile bond strength tests: effects of composite resin
J. appl. oral sci
;
18(6): 591-598, Nov.-Dec. 2010. ilus, tab
Article
in English
| LILACS
| ID: lil-573729
ABSTRACT
OBJECTIVES:
The aims of this study were to evaluate the effect of resin composite (Filtek Z250 and Filtek Flow Z350) and adhesive system [(Solobond Plus, Futurabond NR (VOCO) and Adper Single Bond (3M ESPE)] on the microtensile (μTBS) and microshear bond strength (μSBS) tests on enamel, and to correlate the bond strength means between them. MATERIAL ANDMETHODS:
Thirty-six extracted human molars were sectioned to obtain two tooth halves one for μTBS and the other one for μSBS. Adhesive systems and resin composites were applied to the enamel ground surfaces and light-cured. After storage (37(0)C/24 h) specimens were stressed (0.5 mm/min). Fracture modes were analyzed under scanning electron microscopy. The data were analyzed using two-way ANOVA and Tukey's test (α=0.05).RESULTS:
The correlation between tests was estimated with Pearson's product-moment correlation statistics (α =0.05). For both tests only the main factor resin composite was statistically significant (p<0.05). The correlation test detected a positive (r=0.91) and significant (p=0.01) correlation between the tests.CONCLUSIONS:
The results were more influenced by the resin type than by the adhesives. Both microbond tests seem to be positive and linearly correlated and can therefore lead to similar conclusions.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
In Vitro Techniques
/
Dental Bonding
/
Dentin-Bonding Agents
/
Composite Resins
/
Dental Enamel
Type of study:
Evaluation studies
Limits:
Humans
Language:
English
Journal:
J. appl. oral sci
Journal subject:
Dentistry
Year:
2010
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
State University of Ponta Grossa/BR
/
University of North of Paraná/BR
/
University of São Paulo/BR
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