Composite bond strength to enamel with self-etching primers.
This study compared the shear bond strength (SBS) to enamel of five self-etching primer/adhesive systems and one total-etch, one-bottle adhesive system. Sixty freshly extracted bovine incisors were mounted, polished to 600-grit and randomly assigned to six groups (n=10): Adper Prompt Self-Etch (AD), OptiBond Solo Plus Self-Etch (OP), AdheSE (AS), Tyrian (TY) and Clearfil SE Bond (SE) as self-etching systems; and Single Bond (SB) as a total-etch system (control). The respective hybrid composite was applied in a #5 gelatin capsule and light-cured. After 500 thermal cycles (5 degrees C-55 degrees C), the specimens were loaded in shear using an Instron at 5 mm/minute. Mean bond strengths were analyzed with one-way ANOVA, followed by a Duncan's post-hoc test (p 0.05). SBS (mean +/- SD) were: AD=13.0(+/- 2.5); OP=5.6(+/-2.3);AS=12.6(+/-3.7); TY=7.6(+/-2.6); SE=17.6(+/-4.5) and SB=17.9(+/-4.4). ANOVA showed a significant difference at p<0.0001. Duncan's post-hoc test ranked this difference in three homogeneous subsets. Only SE showed similar enamel SBS compared to the total-etch system tested (SB). AD and AS were ranked in the intermediary Duncan's subset, while TY and OP resulted in the lowest SBS. SBS to enamel with self-etching primers may depend on its specific composition.
Lopes
Guilherme Carpena
GC
Department of Operative Dentistry, Universidade Federal de Santa Catarina, Florianópolis, Brazil. guilherme_lopes@ig.com.br
Marson
Fabiano C
FC
Vieira
Luiz Clovis Cardoso
LC
de Caldeira
Andrada Mauro Amaral
AM
Baratieri
Luiz Narciso
LN
D000180:Acrylic Resins; D000704:Analysis of Variance; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate; D002417:Cattle; D003188:Composite Resins; D001840:Dental Bonding; D003743:Dental Enamel; D003745:Dental Enamel Permeability; D045662:Dental Etching / Q000379:methods*; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents; D008422:Materials Testing; D010755:Organophosphates; D019279:Resin Cements / Q000737:chemistry; D033081:Shear Strength
D000180:Acrylic Resins; C489662:AdheSE cement; C489661:Adper Prompt Self-Etch; C438313:Clearfil SE Bond; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C438835:Filtek P60 Composite Resin; C451600:OptiBond Solo Plus; D010755:Organophosphates; D019279:Resin Cements; C481138:Tyrian SPE; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate