Tensile bond strengths of provisional luting agents used with an implant system.
BACKGROUND
Retrievability of cemented implant-supported fixed prostheses is desirable. Retentive strengths of new provisional luting agents have not been reported.


OBJECTIVE
This study compared the tensile bond strengths of 6 provisional luting agents when used with cemented superstructures and 1 implant system.


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.
Ramp
M H
MH
School of Denistry, University of Alabama, Birmingham, Alabama, USA. merrie_ramp@cs1.dental.uab.edu
Dixon
D L
DL
Ramp
L C
LC
Breeding
L C
LC
Barber
L L
LL
D000704:Analysis of Variance; D003442:Crowns; D000044:Dental Abutments; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D003799:Dental Stress Analysis; D003781:Denture Retention; D003830:Denture, Partial, Fixed; D005054:Eugenol / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry; D013718:Tensile Strength; D015034:Zinc Oxide / Q000737:chemistry; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry
D003738:Dental Cements; D015921:Dental Implants; D008768:Methylmethacrylates; D015035:Zinc Oxide-Eugenol Cement; D005054:Eugenol; C031667:IRM cement; C076899:Temp-Bond; D015034:Zinc Oxide