title: Comparison of joint pain in patients diagnosed with and without articular disc displacement without reduction based on the Research Diagnostic Criteria for Temporomandibular Disorders.
abstract: OBJECTIVE
  We compared joint pain (JP) in patients diagnosed with and without articular disc displacement without reduction (ADD) based on the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) and identified the characteristics of each JP.
  
  
  METHODS
  Fifty-eight patients with restricted mouth opening and pain in temporomandibular joint (TMJ) and with a magnetic resonance imaging diagnosis of ADD were selected. Diagnosis of ADD + JP and nonADD + JP was made with the use of the RDC/TMD.
  
  
  RESULTS
  A multiple regression analysis of the data disclosed a positive correlation between range of motion on maximum assisted mouth opening and visual analog scale (VAS) (severity of JP) in the ADD + JP group, and between chronic pain grade (CPG) and VAS in the nonADD + JP group. A significant difference was observed between ADD + JP and nonADD + JP groups in CPG; CPG was higher in the nonADD + JP than in the ADD + JP group.
  
  
  CONCLUSIONS
  It is suggested that JP related and unrelated to ADD can indicate different types of disease.
authors: Department of Dentistry and Oral Surgery, Hyogo College of Medicine, Hyogo, Japan.
authors: Masanori
authors: M
authors: Fujiwara
authors: Kosuke
authors: K
authors: Honda
authors: Yoko
authors: Y
authors: Hasegawa
authors: Makoto
authors: M
authors: Hasegawa
authors: Masahiro
authors: M
authors: Urade
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D018771:Arthralgia / Q000175:diagnosis*; D005157:Facial Pain / Q000175:diagnosis*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D017410:Practice Guidelines as Topic; D016059:Range of Motion, Articular / Q000502:physiology; D012720:Severity of Illness Index; D019224:Temporomandibular Joint Disc / Q000503:physiopathology*; D013705:Temporomandibular Joint Disorders / Q000145:classification / Q000175:diagnosis* / Q000503:physiopathology