Effect Of Polymicrobial Peri-Implant Plaque On The Morphological Degradation And Titanium Ion Leaching Of The Zimmer Biomet Tapered Screw-Vent (TSV) Implant

Dr. Ajrish George. S; Dr. N.P. Muralidharan, Phd; Dr. Thiyaneswaran N, Phd

doi:10.69980/redvet.v25i2.2269

Dr. Ajrish George. S
Dr. N.P. Muralidharan, Phd
Dr. Thiyaneswaran N, Phd

DOI: https://doi.org/10.69980/redvet.v25i2.2269

Keywords: ...............

Abstract

The Zimmer Biomet Tapered Screw-Vent (TSV) implant features a combination of surface textures, typically including a machined, non-roughened collar in the crestal zone. This in vitro study investigated the degradation of the TSV implant exposed to patient-derived polymicrobial plaque. Ten sterile implants were incubated individually with plaque samples collected from patients (n=10) diagnosed with mild/moderate peri-implantitis for 30 days. Microbial analysis identified six predominant species, with alpha-Haemolytic Streptococcus (40%) being the most prevalent. All tested species (100%) showed Sulphur-reducing and Iron-oxidizing activities, indicative of high corrosive potential. Scanning Electron Microscopy (SEM) revealed moderate surface degradation in the roughened body and minimal change in the machined collar. The overall statistically significant increase in thread diameter was 0.9 +/- 0.04 um. Cracks were predominantly observed at the abutment-implant junction (50.0%), reflecting the internal hex design's vulnerability. Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) confirmed the release of titanium (Ti) ions into the broth, ranging from 30 ppm to 48 ppm. These findings highlight that the protective benefit of a smooth collar is offset by corrosion susceptibility at the implant-abutment interface and the roughened body.

Author Biographies

Dr. Ajrish George. S

MS implantology, Department of Implantology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai

Dr. N.P. Muralidharan, Phd

Professor, Department of Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai

Dr. Thiyaneswaran N, Phd

Professor and Head, Department of Implantology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai.

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