IADR Abstract Archives
Interfacial Analysis of Dentin-Resin Cement After Acid-Base Challenge
Objectives: The universal adhesives are used as silane application prior to the application of self-adhesive resin cement. The purpose of this study was to evaluate dentin bond strength and to observe the adhesive-dentin interface after acid-base challenge using three different self-adhesive resin cements (SARCs) combined with universal adhesives (UA).
Methods: Panavia SA Luting Cement Plus (SAP) with Clearfil Universal Bond Quick (UBQ), MaxCem Universal (MXC) with Optibond Universal (OBU), and Calibra Universal (CAU) with Prime&Bond Universal (PBU) was tested. Thirty dentin surfaces from caries-free human molars were ground and bonded with one of UA and then followed by respective SARCs. The microtensile bond strength (μ TBS) test was performed at a crosshead speed of 1 mm/min. The interface of the bonded specimens after the acid-base challenge was also examined by SEM.
Results: The μ TBS of SAP+UBQ were significantly higher than those of MXC+OBU and CAU+PBU and provided an increased in μ TBS after 10000 TC. There were statistically significant differences among all thermal cycle periods of MXC+OBU and CAU+PBU (p <0.05). An acid-base resistant zone (ABRZ) was observed in all groups, however, the formation of the ABRZ was material dependent.
Conclusions: SAU with UBQ provided the most reliable bonding performance to dentin of human molars and presented resisting against acid-base challenge.
Methods: Panavia SA Luting Cement Plus (SAP) with Clearfil Universal Bond Quick (UBQ), MaxCem Universal (MXC) with Optibond Universal (OBU), and Calibra Universal (CAU) with Prime&Bond Universal (PBU) was tested. Thirty dentin surfaces from caries-free human molars were ground and bonded with one of UA and then followed by respective SARCs. The microtensile bond strength (μ TBS) test was performed at a crosshead speed of 1 mm/min. The interface of the bonded specimens after the acid-base challenge was also examined by SEM.
Results: The μ TBS of SAP+UBQ were significantly higher than those of MXC+OBU and CAU+PBU and provided an increased in μ TBS after 10000 TC. There were statistically significant differences among all thermal cycle periods of MXC+OBU and CAU+PBU (p <0.05). An acid-base resistant zone (ABRZ) was observed in all groups, however, the formation of the ABRZ was material dependent.
Conclusions: SAU with UBQ provided the most reliable bonding performance to dentin of human molars and presented resisting against acid-base challenge.