Adult Herbst-multibracket appliance treatment—how stable are the results very long term?

Author:

Bock Niko Christian1ORCID,von Bremen Julia1,Ruf Sabine1

Affiliation:

1. Department of Orthodontics, University of Giessen , Schlangenzahl 14, 35392 Giessen , Germany

Abstract

Abstract Aim To investigate the post-treatment (Tx) changes (≥ 15 years) in adult Class II patients treated with Herbst appliance and subsequently a multibracket appliance (MBA). Subjects and Methods Of 51 potential patients 31 could be located and participated (19 II:1 and 12 II:2). At a mean age of 21.8 ± 7.3 years (T0), Herbst-MBA Tx had been started. The mean post-Tx observation period was 19.8 ± 3.6 years. Study models from before and after Tx (T1, mean age: 23.6 ± 7.4 years), after 3.0 ± 2.8 years of retention (T2, mean age: 26.8 ± 8.3 years) as well as after recall (T3, mean age: 43.4 ± 7.5 years) were evaluated using the PAR index as well as standard occlusal variables. Results Pre-Tx, the mean values of the 31 participants were: PAR score = 26.1 ± 9.6 points, Class II molar relationship (MR) = 0.7 ± 0.2 cusp widths (CW), overjet = 6.9 ± 2.3 mm and overbite = 4.8 ± 2.6 mm. After Tx, the mean PAR score was 5.3 ± 2.8. A Class I MR (0.0 ± 0.1 CW) was present while overjet and overbite had decreased to 2.1 ± 0.7 and 1.3 ± 0.8 mm, respectively. At recall (19.8 ± 3.6 years post-Tx), a slight PAR score increase (+ 3.1 points) had occurred (final value: 8.4 ± 3.7); this was mainly due to mild increases in overjet, overbite (final values: 3.3 ± 1.4 mm and 2.5 ± 1.7 mm) and changes in sagittal MR (0.2 ± 0.2 CW). Limitations The sample size and the participation rate as well as the unavailability of a comparable control group can be considered as limitations. In addition, no long-term radiographic data could be obtained, and the retention protocol was not uniform. The majority of these issues, however, should be acceptable to due to the duration of the observation period and the uniqueness of the data. Conclusion In the present sample, Herbst-MBA Tx enabled Class II correction in adults with very good occlusal long-term stability.

Funder

German Society of Dentistry and Oral Medicine

Publisher

Oxford University Press (OUP)

Reference38 articles.

1. Dentoskeletal effects and facial profile changes in young adults treated with the Herbst appliance;Ruf;The Angle Orthodontist,1999

2. Temporomandibular joint remodeling in adolescents and young adults during Herbst treatment: a prospective longitudinal magnetic resonance imaging and cephalometric radiographic investigation;Ruf;American Journal of Orthodontics and Dentofacial Orthopedics,1999

3. When is the ideal period for Herbst therapy - early or late;Ruf;Seminars in Orthodontics,2003

4. Herbst/multibracket appliance treatment of Class II division 1 malocclusions in early and late adulthood. a prospective cephalometric study of consecutively treated subjects;Ruf;European Journal of Orthodontics,2006

5. Dentofacial orthopedics or orthognathic surgery: is it a matter of age;Pancherz;American Journal of Orthodontics and Dentofacial Orthopedics,2000

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3