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Tensile bond strengths of provisional luting agents used with an implant system
M H Ramp1, D L Dixon, L C Ramp
1School of Denistry, University of Alabama, Birmingham, Alabama, USA. merrie_ramp@cs1.dental.uab.edu
Statement Of Problem:
Retrievability of cemented implant-supported fixed prostheses is desirable. Retentive strengths of new provisional luting agents have not been reported.
Purpose:
This study compared the tensile bond strengths of 6 provisional luting agents when used with cemented superstructures and 1 implant system.
Material And Methods:
Ten castings were fabricated and randomly paired with abutment specimens. Castings were cemented and the assemblies were stored in distilled water at 37 degrees C for 48 hours. Tensile bond strength necessary to remove each casting was measured with a 500-kg load and a crosshead speed of 0.5 cm/min. Crown/abutment specimens were cleaned after testing, and the testing procedure was repeated for a total of 6 luting agents (n = 10). Data were analyzed with 1-way analysis of variance and Scheffé's analysis (alpha=.05).
Results:
Tensile bond strengths ranged between 1.29 and 4.08 MPa. The lowest tensile bond strengths were found to be statistically similar between Temp Bond and Provilink luting agents. Neo-Temp luting agent exhibited the highest tensile bond strength (P <.01).
Conclusions:
Temp Bond and Provilink luting agents exhibited the lowest mean tensile bond strengths. Neo-Temp luting agent exhibited a tensile bond strength more than 3 times that of Temp Bond luting agent.