title: Subjective alveolar nerve function after bilateral sagittal split osteotomy or distraction osteogenesis of mandible.
abstract: OBJECTIVE
  The present retrospective cohort study compared the subjective inferior alveolar nerve (IAN) function after distraction osteogenesis (DOG) and bilateral sagittal split osteotomy (BSSO) in mandibular advancement surgery.
  
  
  METHODS
  Treatment consisted of correction of a retrognathic mandible using DOG (30 patients) or BSSO (35 patients). Subjective IAN function was recorded using a questionnaire 1 year after surgery. A total of 130 IANs were evaluated.
  
  
  RESULTS
  In 37 nerves (28.5%), an IAN disturbance was observed. In this group of 37 nerves, BSSO had been performed in 26 (70.3%) and DOG in 11 (29.7%). After eliminating confounders (eg, age, amount of advancement, gender), no significant difference (odds ratio 0.652, 95% confidence interval 0.221 to 1.920) was found. Age was significantly related to subjective IAN disturbances for women but not for men. This was seen in women older than 22 years and increased for women older than 36 years to an odds ratio of 22.8 (95% confidence interval 2.580 to 201.488). Satisfaction also correlated with age, independent of gender.
  
  
  CONCLUSIONS
  No difference was found in subjective IAN disturbances after 1 year between DOG and BSSO for lengthening the mandible.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Isala Klinieken, Zwolle, The Netherlands. e.m.baas@isala.nl
authors.forename: Erik M
authors.initials: EM
authors.lastname: Baas
authors.forename: Roy B G
authors.initials: RB
authors.lastname: Horsthuis
authors.forename: Jan
authors.initials: J
authors.lastname: de Lange
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002680:Chin / Q000294:innervation; D015331:Cohort Studies; D015986:Confounding Factors, Epidemiologic; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008046:Lip / Q000294:innervation; D008297:Male; D008334:Mandible / Q000601:surgery; D019186:Mandibular Advancement / Q000379:methods*; D008340:Mandibular Nerve / Q000502:physiology*; D008875:Middle Aged; D056948:Orthognathic Surgical Procedures / Q000379:methods; D019857:Osteogenesis, Distraction / Q000379:methods*; D059229:Osteotomy, Sagittal Split Ramus / Q000379:methods*; D017060:Patient Satisfaction; D063173:Retrognathia / Q000601:surgery; D012189:Retrospective Studies; D012737:Sex Factors; D020886:Somatosensory Disorders / Q000209:etiology; D014110:Touch / Q000502:physiology; D055815:Young Adult