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Volume 29 , Issue 4
July/August 2016

Pages 381–383

Biofilm Affecting the Mechanical Integrity of Implant-Abutment Joints

Abraăo M. Prado, MS, DDS/Jorge Pereira, DDSc, MS, DDS/Bruno Henriques, PhD, MS, Eng/César A. M. Benfatti, DDSc, MS, DDS/Ricardo S. Magini, DDSc, MS, DDS/José López-López, DDSc, MS, DDS/Júlio C. M. Souza, PhD, MS, DDS

PMID: 27479347
DOI: 10.11607/ijp.4759

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.

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