Int J Prosthodont 29 (2016), No. 4 1. July 2016
Int J Prosthodont 29 (2016), No. 4 (01.07.2016)
Page 381-383, doi:10.11607/ijp.4759, PubMed:27479347
Biofilm Affecting the Mechanical Integrity of Implant-Abutment Joints
Prado, Abraão M. / Pereira, Jorge / Henriques, Bruno / Benfatti, César A. M. / Magini, Ricardo S. / López-López, José / Souza, Júlio C. M.
Purpose: This in vitro study evaluated the effect of biofilms on abutment torque loss and wear of implant internal connection surfaces.
Materials and Methods: Morse taper abutments were torqued to corresponding implants and then the implant-abutment assemblies were immersed in a biofilm medium for 72 hours. After detorque evaluation, the abutments were removed and the inner implant surfaces were observed via scanning electron microscopy and profilometry.
Results: The removal torque values and the implant damaged areas decreased after contact with biofilms.
Conclusion: The lubricating effect of biofilms decreased the friction between contacting surfaces, negatively affecting the mechanical integrity of the implant-abutment connection.