The Effect of Implantoplasty on Fracture Resistance and Implant Surface Changes: An In Vitro and Finite Element Analysis Study.

Autor: Goh R; Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand., Li KC; Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand., Atieh MA; Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.; Mohammed Bin Rashid University of Medicine and Health Sciences, Hamdan Bin Mohammed College of Dental Medicine, Dubai Healthcare City, Dubai, UAE.; School of Dentistry, University of Jordan, Amman, Jordan., Ma S; Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand., Oliver A; Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand., Giraldo D; Department of Shared Services, University of Otago, Dunedin, New Zealand., Tawse-Smith A; Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.
Jazyk: angličtina
Zdroj: Clinical implant dentistry and related research [Clin Implant Dent Relat Res] 2024 Nov 06. Date of Electronic Publication: 2024 Nov 06.
DOI: 10.1111/cid.13409
Abstrakt: Introduction: Implantoplasty can be performed on implants diagnosed with peri-implantitis to facilitate implant decontamination and improve access for oral home care. However, its effect on the mechanical strength of the implant is still uncertain. This study aimed to evaluate the effect of implantoplasty on the fracture resistance of dental implants with various degrees of bone loss, as well as its surface changes.
Methods: Eighty 4.2 × 13 mm conical connection dental implants were allocated evenly into four groups based on the bone defect morphology: circumferential or semi-circumferential, and 3 or 5 mm vertical height. Half of the implants underwent implantoplasty with tungsten carbide finishing burs. Weight, volume, and surface roughness of the implants were recorded prior to and after instrumentation. All implants were subjected to static loading to failure or fracture and the implant surfaces were then analyzed using optical microscopy. Finite element analysis was carried out to assess the stress pattern on dental implants after implantoplasty.
Results: Implantoplasty significantly reduced the fracture resistance of implants with all defect morphologies, aside from those with 3 mm of circumferential bone loss. Implants with 5 mm of peri-implant bone loss also experienced significantly reduced fracture resistance compared to the 3 mm group. Significant decrease in fracture resistance was only observed between the circumferential and semi-circumferential groups with 5 mm of bone loss. Surface roughness was also significantly reduced following implantoplasty. The results from finite element analysis revealed a change in pattern of stress concentration in the implant after implantoplasty.
Conclusion: Implantoplasty negatively impacted the fracture resistance of standard diameter dental implants in most scenarios. The increase in exposed implant length resulted in a decrease in fracture resistance. This increase in fracture risk should be considered prior to implantoplasty, especially in implants with more advanced bone loss.
(© 2024 Wiley Periodicals LLC.)
Databáze: MEDLINE
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