Mechanical Properties of Mini-Implants Used in Extra-Radicular Anchorage
| Autor: | Gabriela Barros Lopes, Matheus Melo Pithon, Carolina Morsani Mordente, Lincoln Issamu Nojima, Martinho Campolina Rebello Horta, Dauro Douglas Oliveira, Rodrigo Vilamarim Soares |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Pesquisa Brasileira em Odontopediatria e Clínica Integrada, Vol 23 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1519-0501 1983-4632 |
| Popis: | Objective: To evaluate the mechanical properties of mini-implants (MIs) manufactured from stainless steel and compare them with conventional titanium-aluminum-vanadium alloy MIs. Material and Methods: The following groups were formed: G1 (n=24), 8×1.5 mm steel MIs; G2 (n=24), 12×2.0 mm steel MIs; and G3 (n=24), 10×1.5 mm titanium MIs. The 72 MIs were inserted in the infra zygomatic crest region of the maxilla and retromolar trigone in the jaw of 10 pigs. Pull-out, insertion torque, fracture and percussion tests were performed in order to measure the tensile strength, primary stability and fracture strength of MIs. A digital torque gauge was used to measure insertion and fracture torque, a universal mechanical testing machine was used for pull-out testing and a periotest device was used to measure the micromovement of MIs. For morphological and MI component evaluation, scanning electron microscopy (SEM) was performed. D'Agostino & Pearson, Kruskal-Wallis, and Dunn post-hoc and normality tests were used. Results:G2 insertion and fracture torques were significantly higher than G1 and G3 insertion and fracture torques (p |
| Databáze: | Directory of Open Access Journals |
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