Bond strength of bulk-fill resin composites: the effect of cavity preparation and aging
Braz. j. oral sci
; 21: e225454, jan.-dez. 2022. ilus
Article
in En
| LILACS, BBO
| ID: biblio-1366512
Responsible library:
BR218.1
ABSTRACT
Aim:
Evaluating the resin-dentin bond strength of Class II conventional and bulk-fill composite restorations, using different cavity sizes before and after aging.Methods:
Seventy-five human molars were distributed into groups according to the buccolingual width of the cavities, conservative (n=25) and extended (n=50). They were divided according to the restorativematerial:
conventional (Z100/control group) or bulk-fill resin composites (Filtek Bulk Fill/FBF; Tetric N Ceram Bulk Fill/TNCBF; Filtek Bulk Fill Flow/FBFF; Surefill SDR flow/SDR). The restored teeth were sectioned on sticks (n=50 per restorative materials + width cavities group), half were stored in Water/Ethanol 75% for 30 days and the other half were submitted to the immediate microtensile bond strength (µTBS) test. Data were analyzed applying the Three-Way Analysis of Variance (ANOVA), Bonferroni test, test t, and Weibull analyses (p<0.05).Results:
SDR and FBF presented lower µTBSvalues for extended preparation when compared to the conservative preparation, before aging. After aging, only for the FBFF, a decrease in the µTBSvalues was observed. Comparing the µTBSvalues, before and after aging, the SDR demonstrated lower µTBSvalues after aging when the conservative cavity was used. A decrease in the µTBSvalues was observed for the Z100, the FBF and, the FBFF, after aging, when the extended cavity was used.Conclusion:
The effect of cavity preparation and aging on the resin-dentin of Class II is material dependent. Most of the bulk-fill resin composites evaluated presented a similar performance to the conventional resin composites for all the conditions of this studyKey words
Full text:
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Index:
LILACS
Main subject:
Tensile Strength
/
Aging
/
Composite Resins
/
Dental Cavity Preparation
Limits:
Humans
Language:
En
Journal:
Braz. j. oral sci
Journal subject:
ODONTOLOGIA
Year:
2022
Type:
Article