Influence of eugenol-containing temporary cement on bonding of self-etching adhesives to dentin.
OBJECTIVE
To investigate the influence of eugenol-containing temporary cement on bonding of resin composite to dentin mediated by self-etching adhesives.


METHODS
Flat dentin surfaces were produced by grinding of extracted human molars. The dentin surfaces were either used directly or after a one-week exposure to a zinc oxide-eugenol cement (IRM). A resin composite (Herculite XRV) was bonded to the dentin surfaces following treatment with 1 of 6 self-etching adhesives (AdheSE, Adper Prompt L-Pop, Clearfil SE Bond, iBond, OptiBond Solo Plus - Self-Etch Adhesive System, and Xeno III). An adhesive system containing 0.5 M EDTA as dentin conditioner (Gluma Classic) was included as negative control, and an etch-and-rinse adhesive system (OptiBond FL) was included as positive control. After storage in water at 37 degrees C for 1 week, the bonded specimens were fractured in shear (n = 8 in each group).


RESULTS
Previous contact of dentin with zinc oxide-eugenol cement significantly decreased the bond strength mediated by the negative control and did not affect the bond strength mediated by the positive control. For the self-etching adhesives, no effect was found of previous contact with zinc oxide-eugenol cement. With and without previous contact with zinc oxide-eugenol cement, the etch-and-rinse adhesive system yielded a significantly higher bond strength than all other adhesive systems.


CONCLUSIONS
Previous contact with zinc oxide-eugenol cement did not decrease the bond strength of resin composite to dentin mediated by self-etching adhesives. This finding suggests that eugenol-containing temporary cements may be safe to use in combination with self-etching adhesives.
Department of Dental Materials, School of Dentistry, University of Copenhagen, Denmark. apz@odont.ku.dk
Anne
A
Peutzfeldt
Erik
E
Asmussen
D000704:Analysis of Variance; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements / Q000737:chemistry*; D003794:Dental Restoration, Temporary / Q000379:methods*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005054:Eugenol / Q000009:adverse effects* / Q000737:chemistry; D006801:Humans
D003738:Dental Cements; D017220:Dentin-Bonding Agents; D005054:Eugenol