Evaluation of Orthodontic Mini-Implants' Stability Based on Insertion and Removal Torques: An Experimental Study.

IF 3.8 3区医学 Q2 ENGINEERING, BIOMEDICAL

Bioengineering Pub Date : 2025-05-20 DOI:10.3390/bioengineering12050549

Primavera Sousa-Santos, Sofia Sousa-Santos, Ana Catarina Oliveira, Cíntia Queirós, Joana Mendes, Carlos Aroso, José Manuel Mendes

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引用次数: 0

Abstract

Orthodontic mini-implants (MIs) are excellent alternative skeletal anchorage devices. Their stability is important for their survival, requiring appropriate torque application during insertion and removal.

Objective: This study aimed to evaluate the influences of the diameter and brand of MIs on their stability by measuring the maximum insertion and removal torques after they had been aged in a pH 7 artificial saliva for 4 weeks at 37 °C.

Methods: Forty Ti6Al4V alloy MIs of two different brands and diameters were divided into four groups. They were placed in artificial bone blocks using the NSK^® Surgic Pro coupled with a digital torque gauge (Centor Touch Star TH^®) to measure the maximum insertion and removal torques.

Results: After ageing, the Fatscrew (Fts) MIs were more stable when removed than the white brand (WB) MIs. The WB MIs lost stability over time, while the Fts MIs-especially the 2.0 mm ones-maintained good stability.

Conclusions: The significant differences between the tested groups, especially the stability observed in the 2.0 mm Fts MIs compared to the other groups, highlight the importance of brand and diameter size in the effectiveness of MIs.

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基于插拔力矩评价正畸微型种植体稳定性的实验研究。

正畸微型种植体（MIs）是极好的替代骨锚定装置。它们的稳定性对它们的生存至关重要，在插入和拆卸过程中需要适当的扭矩。目的：本研究通过测定MIs在pH为7的人工唾液中37℃陈化4周后的最大插拔扭矩，评价MIs直径和品牌对其稳定性的影响。方法：40个不同牌号和直径的Ti6Al4V合金MIs分为4组。使用NSK®surgical Pro和数字扭矩计（Centor Touch Star TH®）将它们放置在人造骨块中，以测量最大插入和移除扭矩。结果：衰老后，去除Fatscrew (Fts) MIs时，其稳定性优于white brand (WB) MIs。随着时间的推移，WB mi失去了稳定性，而ft mi -特别是2.0 mm mi -保持了良好的稳定性。结论：试验组之间的显著差异，特别是2.0 mm Fts MIs与其他组相比的稳定性，突出了品牌和直径大小对MIs有效性的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bioengineering Chemical Engineering-Bioengineering

CiteScore

4.00

自引率

8.70%

发文量

661

期刊介绍： Aims Bioengineering (ISSN 2306-5354) provides an advanced forum for the science and technology of bioengineering. It publishes original research papers, comprehensive reviews, communications and case reports. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. All aspects of bioengineering are welcomed from theoretical concepts to education and applications. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. There are, in addition, four key features of this Journal: ● We are introducing a new concept in scientific and technical publications “The Translational Case Report in Bioengineering”. It is a descriptive explanatory analysis of a transformative or translational event. Understanding that the goal of bioengineering scholarship is to advance towards a transformative or clinical solution to an identified transformative/clinical need, the translational case report is used to explore causation in order to find underlying principles that may guide other similar transformative/translational undertakings. ● Manuscripts regarding research proposals and research ideas will be particularly welcomed. ● Electronic files and software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. ● We also accept manuscripts communicating to a broader audience with regard to research projects financed with public funds. Scope ● Bionics and biological cybernetics: implantology; bio–abio interfaces ● Bioelectronics: wearable electronics; implantable electronics; “more than Moore” electronics; bioelectronics devices ● Bioprocess and biosystems engineering and applications: bioprocess design; biocatalysis; bioseparation and bioreactors; bioinformatics; bioenergy; etc. ● Biomolecular, cellular and tissue engineering and applications: tissue engineering; chromosome engineering; embryo engineering; cellular, molecular and synthetic biology; metabolic engineering; bio-nanotechnology; micro/nano technologies; genetic engineering; transgenic technology ● Biomedical engineering and applications: biomechatronics; biomedical electronics; biomechanics; biomaterials; biomimetics; biomedical diagnostics; biomedical therapy; biomedical devices; sensors and circuits; biomedical imaging and medical information systems; implants and regenerative medicine; neurotechnology; clinical engineering; rehabilitation engineering ● Biochemical engineering and applications: metabolic pathway engineering; modeling and simulation ● Translational bioengineering