Adhesion of resin core foundation composites to root canal dentin using different dentin adhesives.
OBJECTIVE
To evaluate the microtensile bond strengths (microTBS) of two core composites; LuxaCore and MultiCore Flow, to root canal dentin when using different adhesive systems.


METHODS
Bonded specimens were allocated into six groups (N=20) according to the combination of two core composites and three adhesive systems (All-Bond 2, Excite DSC and Contax). The materials were used according to the manufacturers' instructions. The microTBS were measured using a universal testing machine with a crosshead speed of 1 mm/minute. Data were analyzed utilizing two-way ANOVA (alpha=0.05).


RESULTS
Excite DSC showed the highest mean microTBS, which was significantly different from those of All-Bond 2 and Contax in LuxaCore groups. Excite DSC showed the highest microTBS but significant differences (P=0.154) were not detected in MultiCore groups. There were significant differences in microTBS between two resin composites (P<0.001). With Contax, microTBS of MultiCore Flow to dentin were significantly higher than those of LuxaCore (P=0.003).
Wattanasukchai
Penprapa
P
Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
Sakoolnamarka
Rangsima
R
Arksornnukit
Mansuang
M
D000704:Analysis of Variance; D003188:Composite Resins; D001840:Dental Bonding; D003738:Dental Cements; D003799:Dental Stress Analysis; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents; D008422:Materials Testing; D008689:Methacrylates; D019279:Resin Cements; D012387:Root Canal Filling Materials; D018709:Statistics, Nonparametric; D013718:Tensile Strength
D003188:Composite Resins; C483521:Contax; D003738:Dental Cements; D017220:Dentin-Bonding Agents; C420130:Excite cement; C483522:LuxaCore; D008689:Methacrylates; C509715:MultiCore Flow; D019279:Resin Cements; D012387:Root Canal Filling Materials; C100742:All-Bond 2