title: The prevalence of radiologic TMJ findings and self-reported orofacial pain in a patient group wearing implant dentures.
abstract: OBJECTIVE
  This study had a twofold aim: first, to gather knowledge about the prevalence of radiologic signs of temporomandibular joint osteoarthritis (TMJ-OA) and possible risk factors in patients who had worn an implant prosthesis for between 2.5 and 10 years; and second, to investigate the diagnostic value of radiologic TMJ-OA signs for orofacial pain in a non-temporomandibular disorders group.
  
  
  METHODS
  Two hundred thirty patients (134 women, 96 men) answered a questionnaire regarding orofacial pain. In mean, they were 64 years old and wore 98 fixed and 132 removable implant dentures. The effect of age, gender, state of the dentition, time span after prosthesis placement, parafunction, and TMJ sounds on radiologic TMJ-OA signs was estimated through multiple logistic regression. The predictive values were calculated to assess the diagnostic value of severe TMJ-OA signs to predict orofacial pain.
  
  
  RESULTS
  Prevalence of TMJ-OA signs was 70% for flattening, 23% for osteophytes, and 24% for erosion. Some effect on radiologic TMJ-OA signs of gender and state of the dentition was found. The predictive values for orofacial pain from radiologic TMJ-OA ranged from 0.22 to 0.81.
  
  
  CONCLUSIONS
  Radiologic signs of TMJ-OA were common findings. The study gave no indication that long-term wearing of an implant prosthesis has a negative effect on TMJ-OA. It was not possible to predict orofacial pain from radiologic TMJ-OA signs.
authors.affiliation: Department of Prosthodontics, Dental School, University of Tübingen, Germany. eva-maria.engel@med.uni-tuebingen.de
authors.forename: E
authors.initials: E
authors.lastname: Engel
authors.forename: S
authors.initials: S
authors.lastname: Lachmann
authors.forename: D
authors.initials: D
authors.lastname: Axmann-Krcmar
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001862:Bone Resorption / Q000000981:diagnostic imaging; D016001:Confidence Intervals; D015921:Dental Implants; D003769:Dental Occlusion, Traumatic / Q000150:complications; D019094:Dental Prosthesis, Implant-Supported; D003824:Denture, Complete; D003830:Denture, Partial, Fixed; D005096:Exostoses / Q000000981:diagnostic imaging; D005157:Facial Pain / Q000150:complications*; D005260:Female; D005500:Follow-Up Studies; D006261:Headache / Q000150:complications; D006801:Humans; D016015:Logistic Models; D008297:Male; D008335:Mandibular Condyle / Q000000981:diagnostic imaging; D008875:Middle Aged; D019547:Neck Pain / Q000150:complications; D016017:Odds Ratio; D010003:Osteoarthritis / Q000150:complications / Q000000981:diagnostic imaging*; D011237:Predictive Value of Tests; D011859:Radiography; D015203:Reproducibility of Results; D012307:Risk Factors; D012737:Sex Factors; D020069:Shoulder Pain / Q000150:complications; D013016:Sound; D013705:Temporomandibular Joint Disorders / Q000150:complications / Q000000981:diagnostic imaging*
chemical_list: D015921:Dental Implants