Ortopantomografia digital e CBCT na avaliação do paciente com DTM

Activity: Supervision


Introduction: The diagnosis of a temporomandibular disorder is based on a careful anamnesis and correct clinical examination, with the use of complementary diagnostic exams to evaluate predisposing factors. Aims: To assess the degree of predictability of digital ortopantomography (D-OPG) in the anatomical evaluation of the temporomandibular joint, using as reference the assertiveness of cone-beam computed tomography (CBCT). Materials and Methods: We studied a sample of 30 patients from the University Clinic of Viseu, with an D-OPG and a CBCT in the clinical process. The Fonseca Anamnestic Questionnaire (QAF) were applied and in each imaging examination the condylar morphology, the slope of the posterior wall of the articular eminence (AE) and the location of the condyle in the glenoid cavity on the right and left side were analyzed. Bimaxillary dentation was also evaluated in the D-OPG. The data collected were interpreted in the IBM® SPSS Statistics software for a significance level of 5%. Results: The sample obtained is mostly female under 40 years of age, with complete dentition and mild TMD. In the sagittal plane, there was a high prevalence of the flat form in ages over 40 years and in patients with TMD. In the total evaluation of condylar morphology there is an agreement of 80% between CBCT and D-OPG. In the younger class and in patients with TMD, a higher mean AE inclination and a greater frequency of posterior condyle displacement were observed. There is a correlation of approximately 0,78 between D-OPG and CBCT in the evaluation of slope, on both sides. Regarding the location of the condyle in the glenoid cavity, there is an agreement of 23,3% between the two imaging exams. Conclusions: Based on the results obtained and the work developed, it is concluded that the Dentist should not neglect D-OPG in the assessment of predisposing factors of TMD, especially in the evaluation of condylar morphology, in the evaluation of the posterior wall of the AE and possible joint asymmetries in order to obtain an early diagnosis of them.
Period19 Aug 2020
Held atUniversidade Católica Portuguesa
Degree of RecognitionMaster


  • Temporomandibular joint
  • Temporomandibular disorders
  • Computed tomography
  • Cone-beam computed tomography
  • Digital ortopantomography
  • Panoramic radiography