Orthodontic traction of a deeply impacted mandibular first molar via a ramus miniscrew through lateral-window technique

IF 3.1 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Journal of the American Dental Association Pub Date : 2024-10-01 DOI:10.1016/j.adaj.2024.08.007

Qi Fan DDS, Hong Zhou DDS, Lingling Pu DDS, Shangyou Wen DDS, Jialun Li DDS, Wenli Lai DDS, PhD, Hu Long DDS, PhD

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Abstract

Background

The incidence of mandibular first molar impaction is less than 0.01%, and there are no standard treatment guidelines. Orthodontic traction can be chosen as a treatment plan in some circumstances. One miniscrew in the mandibular ramus can offer sufficient anchorage for the traction of impacted mandibular molars.

Case Description

A 10-year-old boy had a completely labially positioned maxillary left canine and a deeply impacted mandibular left first molar associated with a dentigerous cyst. Using 2 palatal miniscrews for distalization, space was created to align the maxillary left canine. In addition, a miniscrew in the mandibular ramus facilitated the traction of the mandibular left first molar. After 3 years and 6 months of orthodontic treatment, the integrity of the dental arch was restored, and occlusal function was reestablished.

Practical Implications

A ramus miniscrew is an effective and viable treatment option for the orthodontic traction of deeply impacted mandibular molars.

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通过侧窗技术使用臼齿微型螺钉牵引下颌第一磨牙：病例报告。

背景：下颌第一磨牙嵌塞的发生率低于 0.01%，而且没有标准的治疗指南。在某些情况下，可以选择正畸牵引作为治疗方案。下颌横梁上的一个微型螺钉可以为牵引下颌阻生磨牙提供足够的固定力：一名 10 岁男孩的上颌左侧犬齿完全唇向位，下颌左侧第一磨牙深度撞击，并伴有牙釉质囊肿。使用 2 个腭侧微型螺钉进行远端化，为上颌左犬齿的对齐创造了空间。此外，下颌横梁上的微型螺钉也有助于牵引下颌左侧第一磨牙。经过 3 年零 6 个月的正畸治疗，牙弓的完整性得以恢复，咬合功能也得以重建：实用意义：对于下颌深阻生臼齿的正畸牵引来说，柱突迷你螺钉是一种有效可行的治疗方案。

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

Journal of the American Dental Association 医学-牙科与口腔外科

CiteScore

5.30

自引率

10.30%

发文量

221

审稿时长

34 days

期刊介绍： There is not a single source or solution to help dentists in their quest for lifelong learning, improving dental practice, and dental well-being. JADA+, along with The Journal of the American Dental Association, is striving to do just that, bringing together practical content covering dentistry topics and procedures to help dentists—both general dentists and specialists—provide better patient care and improve oral health and well-being. This is a work in progress; as we add more content, covering more topics of interest, it will continue to expand, becoming an ever-more essential source of oral health knowledge.