Many one-bottle adhesives are not quite compatible with self-cured resin cements, resulting in compromised adhesion.  A self-etch/self-adhering resin cement Maxcem (MAX, Kerr) was recently introduced for much simplified (or single-step) cementation procedure.  Objective: to test the dentin shear bond strength (SBS) of several commercial one-bottle adhesives {Prime&Bond NT (PBNT, Dentsply), Excite (Vivadent); Optibond Solo Plus (OBSP, Kerr)} using either (i) each adhesive's own cement (Calibra, Variolink, Nexus) or (ii) MAX in self-cure mode.  Methods: Dentin SBS test was conducted using a bonding jig (Ultradent) with cylindrical mold (D=2.38mm).  Each adhesive was light-cured, and each cement was self-cured. Both PBNT and OBSP adhesives were used without their respective activators for the purpose of truly assessing the degree of incompatibility.  The bonded specimens (n=6) were stored in de-ionized water at 37°C for 24 hours before being subjected to shear force on an Instron mechanical tester.   Results: t-test revealed that, for all three adhesives, the SBS obtained with MAX was significantly (p < 0.01) higher than those obtained with each adhesive's own cement.   Severe incompatibility existed between PBNT (without activator) and Calibra, resulting in no bond strength as a result of poor curing of the cement in contact with adhesive.  OBSP yielded the highest SBS among three adhesives regardless whether EXP or each adhesive's own cement was used. 

SBS, MPa
Adhesive		PBNT		Excite		OBSP
Cement (self-cured)	(i)	Calibra	0.0±0.0b*	Variolink	14.9±1.5b	Nexus	21.1±5.3b
	(ii)	MAX	22.7±5.9a	MAX	28.1±2.2a	MAX	35.2±2.8a

   *Means with different letter within the same column are statistically different at p < 0.01.

Conclusions: The self-etch/self-adhering resin cement (Maxcem) exhibited much better compatibility or improved SBS with all three adhesives when compared with their own cements.