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Molar Intrusion using TADs in the Management of an Anterior Open Bite: A Case Report Ariane Sampson Ali Payam Sattarzadeh Dental Update 2024 48:3, 707-709.
Authors
ArianeSampson
BDS (Lond) MFDS MOrth (RCS Edin) MSc
Specialist Orthodontist, Luton and Dunstable Hospital
The prevalence of an anterior open bite ranges in the literature from 1.5% to 11%, with great racial variance. Stable non-surgical treatment of an anterior open bite is notoriously unpredictable, with a high risk of relapse and an uncertainty of true skeletal change. Temporary anchorage devices (TADs) are increasingly used to enhance and simplify orthodontic biomechanics, enabling clinicians to push the boundaries of orthodontic treatment. In anterior open bite cases, TADs may be used predictably for molar intrusion and improvement of the overbite. We describe a 16-year-old male with a Class I incisal relationship on a skeletal I base and increased vertical proportions, complicated by a 4-mm anterior open bite secondary to a previous digit sucking habit. Treatment involved fixed orthodontic appliances on an extraction basis, and molar intrusion using TADs. TADs provide a safe and effective alternative to reducing an anterior bite in a patient whose growth is complete.
CPD/Clinical Relevance: Understanding the options for the treatment of an anterior open bite and the limits of orthodontic camouflage will help clinicians provide their patients with the necessary information with which to make informed decisions.
Article
The use of temporary anchorage devices (TADs) for anchorage reinforcement in orthodontics has increased dramatically. The application of TADs has spanned a range of clinical uses, including:
Studies have shown patients to be generally very satisfied and accepting of TADs during and after treatment, with many saying that they would undergo the treatment again.
Anterior open bites affect 1.5–11% of the population, with great racial variance. Its multifactorial aetiology includes the genetically predetermined skeletal pattern, the soft tissue drape, and non-nutritive sucking habits. Several treatments have been suggested for anterior open bite correction: upper incisor extrusion; molar intrusion; and orthognathic surgery. Anterior open bite closure is notoriously prone to relapse due to continuous vertical change throughout life.
The aim of this case report is to describe the multidisciplinary, non-surgical correction of an anterior open bite in a non-growing patient by molar intrusion using skeletal anchorage and fixed appliances. The correction of this open bite was achieved mostly by molar intrusion and remained stable at 6 months after the end of active treatment.
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