Microscopic and energy dipersive x-ray analysis of surface adaptation of dental cements to dental ceramic surfaces.
BACKGROUND
Clinical failure rates reported for acid etched/resin-bonded ceramic restorations are significantly lower than those reported for restorations luted with traditional cements. This improved clinical performance may be associated with greater adaptation of the resin cements to the ceramic surfaces.


OBJECTIVE
The objective of this study was to determine whether the use of resin cements accompanied by acid etching results in improved adaptation when compared with the use of zinc phosphate or glass ionomer cements.


RESULTS
The results of this experiment indicate that superior adaptation of cement to ceramic is produced by acid etching and luting with resin cement. In addition, the results lead to the hypothesis that the high clinical failure rates reported for zinc phosphate or glass ionomer luted restorations are due either to incomplete adaptation or to failure within the cement.


CONCLUSIONS
The findings indicate that the use of resin cements accompanied by acid etching of the ceramic surface is the preferred technique for clinical placement of all-ceramic restorations.
Thompson
J Y
JY
Department of Operative Dentistry, School of Dentistry, University of North Carolina, Chapel Hill 27599-7450, USA.
Rapp
M M
MM
Parker
A J
AJ
D000134:Acid Etching, Dental; D000704:Analysis of Variance; D002516:Ceramics / Q000737:chemistry*; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent; D004577:Electron Probe Microanalysis; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D013499:Surface Properties; D015036:Zinc Phosphate Cement / Q000737:chemistry
D003738:Dental Cements; D003764:Dental Materials; C047475:Dicor ceramic; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012821:Silanes; C096477:Vitabloc MK1; D003776:Dental Porcelain; D015036:Zinc Phosphate Cement