Anterior openbite malocclusion in adults

Angle Orthod. 2022 Jan 1;92(1):27-35. doi: 10.2319/071221-549.1.


Objectives: To investigate stability and satisfaction in adult anterior open bite (AOB) patients at least 9 months post-treatment, as well as patient and practitioner factors that may be associated with stability and satisfaction.

Materials and methods: Practitioners and their adult AOB patients were recruited through the National Dental Practice-Based Research Network. Data on patient and practitioner characteristics, treatment recommendations and factors were previously collected. Treatment stability was determined by assessing post-treatment intraoral photographs. Patient satisfaction was determined from post-treatment questionnaires. Treatment was categorized into aligners, fixed appliances, temporary anchorage devices, and orthognathic surgery. Extractions were also investigated. Retention type was categorized into vacuum-formed, Hawley-style, or bonded retainers, and regimens were classified as full-time or part-time wear.

Results: Retention data collected from 112 patients had a mean post-treatment time of 1.21 years. There were no statistically significant differences in stability between treatment groups. Depending on whether a qualitative index or a millimetric measure was employed, stability ranged from 65% to 89%. Extractions and less initial lower incisor proclination were associated with higher stability in patients treated with fixed appliances only. High satisfaction was reported by patients at retention. There were no clear differences in stability or satisfaction among retention types or regimens.

Conclusions: The stability of adult AOB orthodontic treatment was high, regardless of treatment or retainer modality. Satisfaction in adult AOB patients was high, regardless of retention type or regimen.

Keywords: Anterior openbite; Retention; Satisfaction; Stability.

MeSH terms

  • Adult
  • Humans
  • Incisor
  • Malocclusion*
  • Open Bite* / therapy
  • Orthodontic Appliance Design
  • Orthodontic Appliances, Fixed
  • Orthodontic Retainers
  • Orthognathic Surgical Procedures*
  • Vacuum