Article: Volume 48 Number 3 Page 193 - March 2021

  Dent Update 2021; 48: 193-199  Read article

Orthodontics:  Molar intrusion using TADs in the management of an anterior open bite: a case report

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Abstract: 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.

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.

Author notes: Ariane Sampson, BDS (Lond) MFDS MOrth (RCS Edin) MSc, Specialist Orthodontist, Luton and Dunstable Hospital. Ali Payam Sattarzadeh, BDS MFDS RCS MSc MOrth RCS FDS RCS Consultant Orthodontist, Luton and Dunstable Hospital. email:

Objective: To demonstrate a simple, effective and well-tolerated non-surgical alternative to anterior open-bite closure in a non‑growing patient.