The Effect of Abutment Surface Roughness on the Retention of Implant-Supported Crowns Cemented with Provisional Luting Cement

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Abstract

 Background and Objective: Surface roughness can increase the retention of castings
by sandblast that are micro retentive. This study compared the retention of
implant-supported crowns when used with 3 different surface roughness abutments
and one temporary cement.

 Materials and Methods: Thirty abutments (DIO
implant- Cemented abutment,SAC 4814N(II)) were divided in three groups, first
group was standard machine surface,
second group sandblasted with 25 micron aluminum
oxide particles and third group was sandblasted with 50 micron than ten regular
diameter implant analogs were embedded in resin acrylic block and provisional
cement kerr Temp bond NE was used for cementation.90 metal coping were
fabricated and after cementation the
aging processing was done than the
retentive strength was tested with universal testing machine at cross head
speed of 0.5 mm/min, results were analyzed using One way ANOVA and Tukey test.   Results: Retentive strength of
temp bond kerr with 50 micro sanbblasted abutment was statistically different
than two other groups(P < 0.001) .and between all the group standard abutment
was weakest.   Conclusion: Surface modification
of implant abutment by sandblast may be an effective method to increase
retention of crown when provisional luting cement is used. 

Keywords

Daneshvar Medicine
Volume 21, Issue 1 - Serial Number 104
March and April 2013
Pages 19-26

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