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The International Journal of Prosthodontics



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Int J Prosthodont 31 (2018), No. 2     29. Mar. 2018
Int J Prosthodont 31 (2018), No. 2  (29.03.2018)

Page 163-165, doi:10.11607/ijp.5530, PubMed:29518811

Do Sealing Materials Influence Superstructure Attachment in Implants?
Biscoping, Stephanie / Ruttmann, Esther / Rehmann, Peter / Wöstmann, Bernd
Purpose: This study aimed to evaluate the possible effect of sealing materials on superstructure attachment (ie, tightening/loosening torque and implant-abutment gap) in two different implant systems.
Materials and Methods: A silicone, a chlorhexidine gel, and an industrial lubricant were tested. A 3D microscope was used for assessment of the implant-abutment gap, and the abutment screw was tightened and loosened with a digital torque screwdriver. A total of 20 implants per test group (10 BEGO Semados RI and 10 Nobel Biocare Replace Select Straight) were evaluated.
Results: The tested sealing materials did not influence the gap between implant and abutment, but the force necessary for loosening the abutment screws decreased significantly.
Conclusion: Sealing materials may be useful against bacteria, but probably influence torque negatively.