Effect of Immediate Loading on the Stability of Orthodontic Mini-Implant-An Ex Vivo Study.

IF 2.7 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Orthodontics & Craniofacial Research Pub Date : 2026-07-14 DOI:10.1111/ocr.70155

Tehchai Richard Chang, K Pradeep, C V Padma Priya, Manda Anoosha, N Hari Babu, Avichal Singh Sodhi

{"title":"Effect of Immediate Loading on the Stability of Orthodontic Mini-Implant-An Ex Vivo Study.","authors":"Tehchai Richard Chang, K Pradeep, C V Padma Priya, Manda Anoosha, N Hari Babu, Avichal Singh Sodhi","doi":"10.1111/ocr.70155","DOIUrl":null,"url":null,"abstract":"Introduction: Mini-implant placement has become a routine method for providing anchorage in orthodontic treatment. The stability of these implants is influenced by several factors, including implant design, bone quality, site preparation, insertion angle, and loading protocol. Among these, implant and bone quality are largely unmodifiable. Resonance Frequency Analysis (RFA) is widely used to assess implant stability. This ex vivo study aimed to evaluate the impact of immediate loading on the stability of orthodontic mini-implants using RFA.Materials and methods: This prospective animal study assessed the primary stability of 72 self-drilling stainless steel mini-implants of three lengths (1.3 mm × 6 mm, 1.3 mm × 8 mm, and 1.3 mm × 10 mm). A 2 N load was applied using nickel-titanium coil springs. Stability was measured by RFA immediately after force application (T0) and after 5 weeks (T1).Results: Initial stability was comparable across all implant lengths. After 5 weeks of loading, all groups demonstrated a reduction in stability. The 6 mm implants showed a significantly greater loss of stability (5.31 ± 4.89) compared to the 8 mm (2.36 ± 4.08) and 10 mm (2.39 ± 1.64) implants. All lengths exhibited statistically significant stability loss post-loading (6 mm, p = 0.001; 8 mm, p = 0.009; 10 mm, p = 0.001).Conclusion: Variations in implant length did not significantly affect immediate stability following loading. However, over time, 6 mm implants experienced greater stability loss compared to 8 mm and 10 mm implants. Despite this, shorter implants exhibited slightly higher initial stability under load.","PeriodicalId":19652,"journal":{"name":"Orthodontics & Craniofacial Research","volume":" ","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Orthodontics & Craniofacial Research","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1111/ocr.70155","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}

引用次数: 0

Abstract

Introduction: Mini-implant placement has become a routine method for providing anchorage in orthodontic treatment. The stability of these implants is influenced by several factors, including implant design, bone quality, site preparation, insertion angle, and loading protocol. Among these, implant and bone quality are largely unmodifiable. Resonance Frequency Analysis (RFA) is widely used to assess implant stability. This ex vivo study aimed to evaluate the impact of immediate loading on the stability of orthodontic mini-implants using RFA.

Materials and methods: This prospective animal study assessed the primary stability of 72 self-drilling stainless steel mini-implants of three lengths (1.3 mm × 6 mm, 1.3 mm × 8 mm, and 1.3 mm × 10 mm). A 2 N load was applied using nickel-titanium coil springs. Stability was measured by RFA immediately after force application (T0) and after 5 weeks (T1).

Results: Initial stability was comparable across all implant lengths. After 5 weeks of loading, all groups demonstrated a reduction in stability. The 6 mm implants showed a significantly greater loss of stability (5.31 ± 4.89) compared to the 8 mm (2.36 ± 4.08) and 10 mm (2.39 ± 1.64) implants. All lengths exhibited statistically significant stability loss post-loading (6 mm, p = 0.001; 8 mm, p = 0.009; 10 mm, p = 0.001).

Conclusion: Variations in implant length did not significantly affect immediate stability following loading. However, over time, 6 mm implants experienced greater stability loss compared to 8 mm and 10 mm implants. Despite this, shorter implants exhibited slightly higher initial stability under load.

查看原文本刊更多论文

即刻载荷对正畸微型种植体稳定性影响的离体研究。

简介：微型种植体植入已成为正畸治疗中提供支抗的常规方法。这些种植体的稳定性受到几个因素的影响，包括种植体设计、骨质量、位置准备、插入角度和加载方案。其中，种植体和骨质量在很大程度上是不可改变的。共振频率分析（RFA）被广泛用于评估种植体的稳定性。这项离体研究旨在评估即刻载荷对使用RFA的正畸微型种植体稳定性的影响。材料和方法：本前瞻性动物研究评估了72个三种长度（1.3 mm × 6mm， 1.3 mm × 8mm和1.3 mm × 10mm）的自钻孔不锈钢微型种植体的初步稳定性。采用镍钛线圈弹簧施加2n载荷。在施加力后立即（T0）和5周后（T1）用RFA测量稳定性。结果：所有种植体长度的初始稳定性相当。加载5周后，所有组均表现出稳定性下降。与8 mm（2.36±4.08）和10 mm（2.39±1.64）种植体相比，6 mm种植体的稳定性损失（5.31±4.89）明显更大。所有长度的加载后稳定性损失均有统计学意义（6 mm, p = 0.001; 8 mm, p = 0.009; 10 mm, p = 0.001）。结论：种植体长度的变化对加载后即刻的稳定性没有显著影响。然而，随着时间的推移，与8mm和10mm种植体相比，6mm种植体经历了更大的稳定性损失。尽管如此，较短的植入物在负载下表现出稍高的初始稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Orthodontics & Craniofacial Research 医学-牙科与口腔外科

CiteScore

5.30

自引率

3.20%

发文量

审稿时长

>12 weeks

期刊介绍： Orthodontics & Craniofacial Research - Genes, Growth and Development is published to serve its readers as an international forum for the presentation and critical discussion of issues pertinent to the advancement of the specialty of orthodontics and the evidence-based knowledge of craniofacial growth and development. This forum is based on scientifically supported information, but also includes minority and conflicting opinions. The objective of the journal is to facilitate effective communication between the research community and practicing clinicians. Original papers of high scientific quality that report the findings of clinical trials, clinical epidemiology, and novel therapeutic or diagnostic approaches are appropriate submissions. Similarly, we welcome papers in genetics, developmental biology, syndromology, surgery, speech and hearing, and other biomedical disciplines related to clinical orthodontics and normal and abnormal craniofacial growth and development. In addition to original and basic research, the journal publishes concise reviews, case reports of substantial value, invited essays, letters, and announcements. The journal is published quarterly. The review of submitted papers will be coordinated by the editor and members of the editorial board. It is policy to review manuscripts within 3 to 4 weeks of receipt and to publish within 3 to 6 months of acceptance.