Effect of two dentinal desensitizing agents on retention of complete cast coping using four cements.
The cementation of artificial crowns is commonly accompanied by sensitivity, so the clinical application of desensitizing agents has become prevalent. This study investigated the effects of Imperva bonding agent and All-Bond desensitizing agent on the retention of artificial crowns. The cements selected for this study were: zinc phosphate, polycarboxylate, glass ionomer, and resin luting agents. Extracted, intact, human molars were mounted in autopolymerizing acrylic resin and prepared for complete cast copings. Thirty-two teeth were treated with All-Bond desensitizing agent, 32 teeth with Imperva bonding agent, and 32 remained untreated. Castings were cemented and tested on an Instron testing machine. The results demonstrated a significant reduction in retention when All-Bond desensitizing agent was used with polycarboxylate cement and some reduction with zinc phosphate cement. Imperva bonding agent demonstrated less retention with glass ionomer cement.
Mausner
I K
IK
Division of Restorative and Prosthodontic Sciences, College of Dentistry, New York University, New York, USA.
Goldstein
G R
GR
Georgescu
M
M
D000704:Analysis of Variance; D002484:Cementation; D003188:Composite Resins / Q000737:chemistry / Q000627:therapeutic use*; D003442:Crowns; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D017268:Dental Prosthesis Retention; D003799:Dental Stress Analysis / Q000295:instrumentation; D003807:Dentin Sensitivity / Q000517:prevention & control*; D017220:Dentin-Bonding Agents / Q000737:chemistry / Q000627:therapeutic use*; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry / Q000627:therapeutic use*; D011076:Polycarboxylate Cement / Q000737:chemistry; D019279:Resin Cements; D013314:Stress, Mechanical; D015036:Zinc Phosphate Cement / Q000737:chemistry
C074864:All-Bond system; D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; C074806:Imperva-Bond; D008689:Methacrylates; D011076:Polycarboxylate Cement; D019279:Resin Cements; D015036:Zinc Phosphate Cement