The Influence of the Implant Macrogeometry on Insertion Torque, Removal Torque, and Periotest Implant Primary Stability: A Mechanical Simulation on High-Density Artificial Bone

Symmetry

Davide Pietropaoli¹  Margherita Tumedei²  Morena Petrini²  Adriano Piattelli²  Giovanna Iezzi²  Castrenze La Torre³  MariaStella Di Carmine⁴  Alessandro Cipollina⁵ 

[1] Department of Life, Health and Environmental Sciences, San Salvatore Hospital, University of L’Aquila—Dental Clinic—Unit of Oral Diseases, Prevention and Translational Research—Oral Diseases and Systemic Interactions Study Group (ODISSY Group), 67100 L’Aquila, Italy;Department of Medical, Oral and Biotechnological Sciences, University “G. D’Annunzio” of Chieti Pescara, Via dei Vestini 31, 66100 Chieti, Italy;Independent Researcher, 91016 Erice, Italy;Independent Researcher, Via Della Fornace n 10, 65014 Loreto Aprutino, Italy;Independent Researcher, Via Piacenza, 7, 92019 Sciacca, Italy;

关键词: dental implant;    primary stability;    insertion torque;    mechanical behaviour;    drilling protocol;   

DOI  :  10.3390/sym13050776

来源: DOAJ

【 摘 要 】

Background: The primary stability is a determinant clinical condition for the success of different dental implants macro-design in different bone density using a validated and repeatable in vitro technique employing solid rigid polyurethane blocks. Materials and Methods: Five implants 3.8 × 13 mm² for each macro-design (i.e., IK—tapered; IC—cylindric; and IA—active blade shape) were positioned into 20- and 30- pounds per cubic foot (PCF) polyurethane blocks. Bucco-lingual (BL) and mesial-distal (MD) implant stability quotient score (ISQ) was assessed by resonance frequency analysis while, insertion/removal torques were evaluated by dynamometric ratchet. Results: IC implants shown better primary stability in terms of ISQ compared to IA and IK in lower density block (20 PCF), while IK was superior to IA in higher density (30 PCF). IC shown higher removal torque in 30-PCF compared to IA and IC. Conclusions: The study effectiveness on polyurethane artificial bone with isotropic symmetry structure showed that the implants macro-design might represent a key factor on primary stability, in particular on low-density alveolar bone. Clinicians should consider patients features and implant geometry during low-density jaws rehabilitation. Further investigations are needed to generalize these findings.

【 授权许可】

Unknown