title: Distribution of diagnoses in a population of patients with temporomandibular disorders.
abstract: OBJECTIVE
  The objective of this study was to describe the frequency of TMD diagnoses in a patient population for comparison with the available literature.
  
  
  METHODS
  Five hundred twenty consecutive patients seeking TMD treatment underwent a Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) assessment. The prevalence and age distribution of the different RDC/TMD axis I and II diagnoses were described.
  
  
  RESULTS
  Muscle disorders, disk displacements, and other joint disorders were diagnosed respectively in 56.4%, 42.0%, and 57.5% of patients. Sixty percent of patients had depression symptoms, 76.6% had somatization, and 21.8% presented high levels of pain-related impairment. Disk displacements were more frequently diagnosed in the younger-aged, other joint disorders in the older-aged, and muscle disorders in the middle-aged subjects (ANOVA for mean age comparison, F = 3.355; P = .002).
  
  
  CONCLUSIONS
  These distribution frequencies of TMD diagnoses provide insight into the epidemiology of this disease.
authors.affiliation: TMD Clinic, University of Padova, Padova, Italy. daniele.manfredini@tin.it
authors.forename: Daniele
authors.initials: D
authors.lastname: Manfredini
authors.forename: Niki
authors.initials: N
authors.lastname: Arveda
authors.forename: Luca
authors.initials: L
authors.lastname: Guarda-Nardini
authors.forename: Marzia
authors.initials: M
authors.lastname: Segù
authors.forename: Vittorio
authors.initials: V
authors.lastname: Collesano
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications*; D007592:Joint Diseases / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009140:Musculoskeletal Diseases / Q000150:complications*; D010146:Pain / Q000150:complications*; D013705:Temporomandibular Joint Disorders / Q000150:complications*; D055815:Young Adult