The degree of zinc phosphate cement coverage of complete crown preparations and its effect on crown retention.
This investigation examined the amount of retentive area covered by cement under complete coverage crowns and its effect on retention. Sixty crowns of self-cured acrylic resin were prepared on 60 identical brass dies and were divided into six groups of 10 crowns each according to different cement applications. The results showed that retention was dependent on the amount of retentive area covered by the cement. The amount of cement in the occlusal part of the cementation space did not affect retention.
Assif
D
D
Section of Prosthetic Dentistry, Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Israel.
Azoulay
S
S
Gorfil
C
C
D000180:Acrylic Resins / Q000737:chemistry; D002484:Cementation / Q000379:methods; D003442:Crowns; D003737:Dental Cavity Preparation; D003799:Dental Stress Analysis; D003781:Denture Retention; D008422:Materials Testing; D013499:Surface Properties; D013718:Tensile Strength; D015036:Zinc Phosphate Cement / Q000737:chemistry*
D000180:Acrylic Resins; D015036:Zinc Phosphate Cement