Primary Stability of Dental Implants in Human Jawbones: Experiments & FE Analyses.

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Tác giả: Salomé Bliggenstorfer, Vivianne Chappuis, Ainara Irastorza-Landa, Valentina Ramirez-Garmendia, Cedric Rauber, Amal Saade, Ramon Schweizer, Patrik Wili, Philippe Zysset

Ngôn ngữ: eng

Ký hiệu phân loại: 671.520422 Joining and cutting of metals

Thông tin xuất bản: Denmark : Clinical oral implants research , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 689167

OBJECTIVES: Primary stability (PS) is a key factor for promoting osseointegration and long-term success of dental implants particularly for immediate loading protocols. Beyond the current assessments of PS, an accurate pre-operative evaluation of PS would contribute to the improvement of surgical planning and treatment outcome. This study used biomechanical testing and homogenized finite element (hFE) analysis to objectively measure PS in the laboratory, and digitally estimate PS from prior μCT reconstructions. MATERIAL AND METHODS: Thirty-five bone samples extracted from the jaws of two donors were examined. Twenty-two were finally evaluated for PS. After scanning of the samples with μCT, implants were inserted by two experienced surgeons, and various metrics such as μCT-based bone volume fraction (BV/TV), insertion torque (IT), and resonance frequency analysis (RFA) were assessed to determine PS. Mechanical tests were conducted to measure ultimate force (UFexp) as an objective indicator of PS while the hFE simulations were performed to estimate this same ultimate force (UFsim). RESULTS: Higher correlation was found between UFsim and UFexp (R CONCLUSION: UFsim turns out to be a more reliable and objective indicator of PS than IT and RFA. The hFE analysis requires prior μCT reconstructions and is currently limited by numerical convergence problems. Despite these limitations, pre-operative hFE analysis emerges as a promising tool with a higher accuracy for estimation of PS than state of care techniques.
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