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Comparative Study
English Abstract
Journal Article
[Comparison of the cephalometric characteristics of snoring patients and apneic patients as a function of the degree of obesity. Apropos of 162 cases].
Revue de Stomatologie et de Chirurgie Maxillo-faciale 2001 November
BACKGROUND: The purpose of our study was to compare cephalometric analysis of craniofacial features in normal weight or obese subjects who are habitual snorers or apneic. We conducted a retrospective comparison of their clinical and cephalometric features by degree of obesity.
PATIENTS AND METHODS: One hundred and sixty two male subjects with obstructive sleep apnea syndrome (OSAS) diagnosed by conventional polysomnography were included in the study. Patients were divided into four groups according to their body mass index (BMI) and their apnea/hypopnea index (AHI: Group 1 = normal-weight snorers (34 patients), Group 2 = normal-weight apneic subjects (40 patients), Group 3 = obese snorers (20 patients), Group 4 = obese apneic subjects (68 patients). Lateral cephalometry was performed in all patients. Intergroup comparisons (2/4, 1/2, 3/4) were made using 32 parameters to study the influence of the size of bone structures, their relationships, and size of the upper airways.
RESULTS: The four groups were comparable for age. AHI was higher for group 4 (obese apneic) compared with group 1 (normal-weight snorers). Compared with group 3 (obese snorers), group 1 (normal-weight snorers) had a retroposition of the mandible (smaller SNB and ANB angle), an accentuated facial divergence and a narrower pharyngeal space at the hyoid bone level. Compared with group 1 (normal-weight snorers), group 2 (normal-weight apneic) had a narrower pharyngeal space at different levels. Compared with group 3 (obese snorers), group 4 (obese apneic) had a lower hyoid bone evaluated with different cephalometric variables.
CONCLUSION: This study mainly shows that apneic patients exhibit craniofacial differences when divided into two groups according to their body mass index. Our findings are consistent with previous reports and could suggest a dual etiology of OSAS.
PATIENTS AND METHODS: One hundred and sixty two male subjects with obstructive sleep apnea syndrome (OSAS) diagnosed by conventional polysomnography were included in the study. Patients were divided into four groups according to their body mass index (BMI) and their apnea/hypopnea index (AHI: Group 1 = normal-weight snorers (34 patients), Group 2 = normal-weight apneic subjects (40 patients), Group 3 = obese snorers (20 patients), Group 4 = obese apneic subjects (68 patients). Lateral cephalometry was performed in all patients. Intergroup comparisons (2/4, 1/2, 3/4) were made using 32 parameters to study the influence of the size of bone structures, their relationships, and size of the upper airways.
RESULTS: The four groups were comparable for age. AHI was higher for group 4 (obese apneic) compared with group 1 (normal-weight snorers). Compared with group 3 (obese snorers), group 1 (normal-weight snorers) had a retroposition of the mandible (smaller SNB and ANB angle), an accentuated facial divergence and a narrower pharyngeal space at the hyoid bone level. Compared with group 1 (normal-weight snorers), group 2 (normal-weight apneic) had a narrower pharyngeal space at different levels. Compared with group 3 (obese snorers), group 4 (obese apneic) had a lower hyoid bone evaluated with different cephalometric variables.
CONCLUSION: This study mainly shows that apneic patients exhibit craniofacial differences when divided into two groups according to their body mass index. Our findings are consistent with previous reports and could suggest a dual etiology of OSAS.
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