title: Obstructive sleep apnoea syndrome: results and conclusions of a principal component analysis.
abstract: A cephalometric analysis according to Hasund, supplemented by special obstructive sleep apnoea syndrome (OSAS) parameters, was performed on 169 patients who had been referred from the sleep laboratory. Statistical analysis showed a correlation between specific cephalometric landmarks including posterior airway space (PAS), a soft palate length, hyoid position and posterior growth development of the mandible and OSAS severity. A principal component analysis differentiated between four subgroups of OSAS patients: (1) orthognathic obese subjects; (2) patients with a long soft palate and low-positioned hyoid; (3) retrognathic patients with narrow PAS; and (4) prognathic ones. Lateral cephalometry is an important contribution to OSAS diagnostics and oral and maxillofacial therapy procedures.
authors.affiliation: Department of Oral, Maxillofacial and Plastic Surgery, University of Leipzig, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Hierl
authors.forename: H
authors.initials: H
authors.lastname: Hümpfner-Hierl
authors.forename: B
authors.initials: B
authors.lastname: Frerich
authors.forename: U
authors.initials: U
authors.lastname: Heisgen
authors.forename: A
authors.initials: A
authors.lastname: Bosse-Henck
authors.forename: A
authors.initials: A
authors.lastname: Hemprich
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D002508:Cephalometry / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D006928:Hyoid Bone / Q000473:pathology; D006965:Hyperplasia; D008297:Male; D008334:Mandible / Q000254:growth & development / Q000473:pathology; D008437:Maxilla / Q000002:abnormalities; D008875:Middle Aged; D009305:Nasopharynx / Q000473:pathology; D009666:Nose / Q000473:pathology; D009765:Obesity / Q000150:complications; D010160:Palate, Soft / Q000473:pathology; D014066:Palatine Tonsil / Q000473:pathology; D011378:Prognathism / Q000150:complications; D063173:Retrognathia / Q000150:complications / Q000473:pathology; D012891:Sleep Apnea Syndromes / Q000145:classification / Q000150:complications / Q000473:pathology*