[微型螺钉支抗在正畸治疗中稳定性的临床研究]

[A clinical study on the stability of miniscrew anchorage in orthodontics].

作者信息

Yan Yong-Qing, Gao Yi-Ming

机构信息

Department of Stomatology, Shanghai Jiao Tong University School of Medicine. Shanghai,China.

出版信息

Shanghai Kou Qiang Yi Xue. 2011 Oct;20(5):540-4.

PMID:22109376

Abstract

PURPOSE

The aim of this retrospective study was to summarize the cases who used miniscrew anchorage and to evaluate the clinical factors influencing the stability of miniscrew.

METHODS

The sample comprised 13 patients with 32 miniscrews, in whom the design, occlusogingival position, alveolar position, loading opportunity, gingival condition were investigated to assess the factors related to stability. The data was analyzed by univariate analysis and multivariate analysis using SAS 10.0 software package.

RESULTS

The overall success rate was 90.6%. There was significant relationship between the patients' age and the stability of miniscrews (P=0.04). The success rate was 75% in adolescent patients, and 100% in adult patients. The osseointegration was affected by initial over-loading, but the long-term orthodontic loading (200g) was safe, if osseointegration was achieved. Perio-implant gingivitis, even the suppurative gingivitis (2 cases) didn't destroy the bone-implant interface. The success rate was independent on gender, occlusogingival position, jaw positioning, inserting times of the same miniscrew, and early loading.

CONCLUSIONS

The primary stability is the crucial factor for long-term stability of the miniscrews.

摘要

目的

本回顾性研究旨在总结使用微螺钉支抗的病例，并评估影响微螺钉稳定性的临床因素。

方法

样本包括13例患者共32枚微螺钉，调查其设计、咬合龈向位置、牙槽位置、加载时机、牙龈状况，以评估与稳定性相关的因素。使用SAS 10.0软件包对数据进行单因素分析和多因素分析。

结果

总体成功率为90.6%。患者年龄与微螺钉稳定性之间存在显著关系（P = 0.04）。青少年患者成功率为75%，成年患者为100%。骨整合受初始过载影响，但如果实现骨整合，长期正畸加载（200g）是安全的。种植体周围牙龈炎，即使是化脓性牙龈炎（2例）也未破坏骨-种植体界面。成功率与性别、咬合龈向位置、颌骨定位、同一微螺钉的植入次数和早期加载无关。