Abstract | BACKGROUND: METHODS: Forty-six Japanese subjects who used nCPAP for a minimum of 2 years had both a baseline and a follow-up cephalometric radiograph taken. These two radiographs were analyzed, and changes in craniofacial structures were assessed. The cephalometric measurements evaluated were related to face height, interarch relationship, and tooth position. RESULTS: Most of the patients with OSA were men (89.1%), and the mean baseline values for age, BMI, and apnea-hypopnea index (AHI) were 56.3 ± 13.4 years, 26.8 ± 5.6 kg/m(2), and 42.0 ± 18.6/h. The average duration of nCPAP use was 35.0 ± 6.7 months. After nCPAP use, cephalometric variables demonstrated a significant retrusion of the anterior maxilla, a decrease in maxillary-mandibular discrepancy, a setback of the supramentale and chin positions, a retroclination of maxillary incisors, and a decrease of convexity. However, significant correlations between the craniofacial changes, demographic variables, or the duration of nCPAP use could not be identified. None of the patients self-reported any permanent change of occlusion or facial profile. CONCLUSION: The use of an nCPAP machine for > 2 years may change craniofacial form by reducing maxillary and mandibular prominence and/or by altering the relationship between the dental arches.
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Authors | Hiroko Tsuda, Fernanda R Almeida, Toru Tsuda, Yasutaka Moritsuchi, Alan A Lowe |
Journal | Chest
(Chest)
Vol. 138
Issue 4
Pg. 870-4
(Oct 2010)
ISSN: 1931-3543 [Electronic] United States |
PMID | 20616213
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Topics |
- Adult
- Aged
- Aged, 80 and over
- Cephalometry
- Continuous Positive Airway Pressure
(adverse effects)
- Dental Arch
(diagnostic imaging)
- Female
- Humans
- Male
- Mandible
(diagnostic imaging)
- Maxilla
(diagnostic imaging)
- Middle Aged
- Prospective Studies
- Radiography
- Sleep Apnea, Obstructive
(therapy)
- Statistics, Nonparametric
- Time Factors
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