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Bond strength of bulk-fill resin composites: the effect of cavity preparation and aging
Charamba, Caroline de Farias; Silva, Larissa Dias Boson; Lima, Renally Bezerra Wanderley; Duarte, Rosângela Marques; Andrade, Ana Karina Maciel.
  • Charamba, Caroline de Farias; University of Pernambuco. Department of Restorative Dentistry. Recife. BR
  • Silva, Larissa Dias Boson; Federal University of Paraíba. Department of Restorative Dentistry. João Pessoa. BR
  • Lima, Renally Bezerra Wanderley; Faculty of Nova Esperança. Department of Restorative Dentistry. João Pessoa. BR
  • Duarte, Rosângela Marques; Federal University of Paraíba. Department of Restorative Dentistry. João Pessoa. BR
  • Andrade, Ana Karina Maciel; Federal University of Paraíba. Department of Restorative Dentistry. João Pessoa. BR
Braz. j. oral sci ; 21: e225454, jan.-dez. 2022. ilus
Article in English | LILACS, BBO | ID: biblio-1366512
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 restorative

material:

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 study
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Tensile Strength / Aging / Composite Resins / Dental Cavity Preparation Limits: Humans Language: English Journal: Braz. j. oral sci Journal subject: Dentistry Year: 2022 Type: Article Affiliation country: Brazil Institution/Affiliation country: Faculty of Nova Esperança/BR / Federal University of Paraíba/BR / University of Pernambuco/BR

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Full text: Available Index: LILACS (Americas) Main subject: Tensile Strength / Aging / Composite Resins / Dental Cavity Preparation Limits: Humans Language: English Journal: Braz. j. oral sci Journal subject: Dentistry Year: 2022 Type: Article Affiliation country: Brazil Institution/Affiliation country: Faculty of Nova Esperança/BR / Federal University of Paraíba/BR / University of Pernambuco/BR