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Dental and skeletal changes associated with long-term mandibular advancement
1Department of Oral Sciences and Orthodontics, School of Dentistry, University of Otago, Dunedin, New Zealand. c.robertson@clear.net.nz
Sleep
|August 2, 2001
Summary
Mandibular advancement therapy for obstructive sleep apnea can lead to progressive dental and skeletal changes, including altered lower face height and incisor angulation. Patients should be informed of these potential side effects and undergo regular dental reviews.
Area of Science:
- Dentistry
- Orthodontics
- Sleep Medicine
Background:
- Obstructive sleep apnea (OSA) treatment often involves mandibular advancement.
- Potential dental and skeletal side effects of this therapy are not well-documented.
Purpose of the Study:
- To investigate the dental and skeletal changes following mandibular advancement in OSA patients.
- To assess the progression of these changes over time.
Main Methods:
- Cephalometric analysis of 100 OSA patients treated with mandibular advancement.
- Measurements taken at 6-month intervals over 30 months.
- Evaluation of cranial base, maxilla, and mandible dimensions and angles.
Main Results:
- Significant skeletal changes observed, including vertical condylar repositioning, within 6 months.
- Dental changes, such as incisor proclination and overbite reduction, occurred later, peaking at 30 months.
- Progressive changes in lower face height, incisor angulation, overbite, and overjet were noted.
Conclusions:
- Long-term mandibular advancement can induce progressive dental and skeletal alterations.
- Informed consent regarding potential side effects is crucial for patients undergoing this therapy.
- Mandatory, long-term dental monitoring is recommended for patients receiving continuous mandibular advancement.