title: [An outcome analysis of two methods of intra-capsular injection of sodium hyaluronate for temporomandibular disorders].
abstract: OBJECTIVE
  To analyze the treatment outcome of the two methods of intra-capsular injection of temporomandibular joints, the upper capsule alone and both the upper and lower capsules, for different subtypes of temporomandibular disorders.
  
  
  METHODS
  A retrospective cohort study was designed, based on the outpatients and the data which were obtained from West China Stomatological Hospital, Sichuan University. SPSS10.0 software was used to analyze the data, which were collected before the operation and one week after the operation.
  
  
  RESULTS
  294 patients were followed up. The group of double capsules injection gained better prospect, not only on the mouth-opening but also the pain-cured, especially in two subgroups such as the anterior dislocation of disc without reduction and the osteoarthritis of TMJ.
  
  
  CONCLUSIONS
  It seems that the double capsules injection of sodium hyaluronate for TMD can gain better outcome than the upper capsule injection, but a clinical randomized controlled test and a long-term follow-up study of the two methods are needed to verify this finding.
authors.affiliation: Dept. of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
authors.forename: Xiao-dong
authors.initials: XD
authors.lastname: Li
authors.forename: Zong-dao
authors.initials: ZD
authors.lastname: Shi
authors.forename: Wei-dong
authors.initials: WD
authors.lastname: Tian
mesh_terms: D000328:Adult; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage*; D007270:Injections, Intra-Articular / Q000379:methods; D008297:Male; D012189:Retrospective Studies; D013705:Temporomandibular Joint Disorders / Q000188:drug therapy*; D016896:Treatment Outcome
chemical_list: D006820:Hyaluronic Acid