Influence of low-viscosity liners on the retention of three luting materials.
A number of materials are available to protect the pulp from postoperative sensitivity. The effect of a calcium hydroxide liner and a dentinal desensitizing agent (potassium oxalate) on crown retention was investigated. Gold crowns were cemented on standardized crown preparations with zinc phosphate cement, glass-ionomer cement, or one of two resin cements. A tensile force was applied until separation occurred. The mean applied force at rupture varied greatly among the groups, indicating that the pulpal protection agent may have a distinct effect on the retention of cast restorations. In addition, other clinical factors, such as angle of convergence, crown height, and total surface area of the tooth should be considered.
Pameijer
C H
CH
University of Connecticut, School of Dental Medicine, Farmington.
Hultén
J
J
Glantz
P O
PO
Randow
K
K
D000704:Analysis of Variance; D002126:Calcium Hydroxide; D003442:Crowns; D001840:Dental Bonding; D003736:Dental Cavity Lining; D003738:Dental Cements / Q000737:chemistry*; D017268:Dental Prosthesis Retention / Q000379:methods*; D005899:Glass Ionomer Cements; D006801:Humans; D008277:Magnesium Oxide; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010070:Oxalates; D011076:Polycarboxylate Cement; D011140:Polyurethanes; D019279:Resin Cements; D012117:Resins, Synthetic; D013718:Tensile Strength; D014783:Viscosity; D015034:Zinc Oxide; D015036:Zinc Phosphate Cement
D003738:Dental Cements; D005899:Glass Ionomer Cements; D010070:Oxalates; D011076:Polycarboxylate Cement; D011140:Polyurethanes; D019279:Resin Cements; D012117:Resins, Synthetic; C081645:Secure resin cement; D008277:Magnesium Oxide; C031892:biomer; D015036:Zinc Phosphate Cement; C040235:Ketac-cem; D002126:Calcium Hydroxide; D015034:Zinc Oxide