RESUMO
PURPOSE: This retrospective study compared computed tomography (CT) imaging to routine dental periapical radiographs in diagnosing radiolucencies around endodontically treated teeth. MATERIALS AND METHODS: Of the 244 CT scans evaluated, 104 had no teeth on the scan. On the remaining 140 scans, 353 teeth fell into the following categories: 59 maxillary molars, 30 mandibular molars, 66 maxillary premolars, 56 mandibular premolars, and 141 anterior teeth. Positive and negative predictive values were calculated, as were sensitivity, specificity, and prevalence assuming the CT scan was the test standard. RESULTS: For the total tooth population periapical radiograph - CT slice sensitivity was 52, specificity was 90, the positive predictive value (PPV) was 97, the negative predictive value (NPV) was 25, and the prevalence 85. CONCLUSION: In the population studied, the CT scan had a greater ability to show radiolucencies that were not evident on periapical radiographs.
Assuntos
Técnicas e Procedimentos Diagnósticos/instrumentação , Técnicas e Procedimentos Diagnósticos/estatística & dados numéricos , Doenças Periapicais/diagnóstico por imagem , Radiografia Dentária/instrumentação , Radiografia Dentária/métodos , Radiografia Dentária/estatística & dados numéricos , Tomografia Computadorizada por Raios X/métodos , Tomografia Computadorizada por Raios X/estatística & dados numéricos , Dente não Vital/diagnóstico por imagem , Humanos , Prevalência , Estudos Retrospectivos , Sensibilidade e Especificidade , Dente , Ápice Dentário/diagnóstico por imagem , Ápice Dentário/patologiaRESUMO
The management of the interim phase of a complete oral rehabilitation in patients with severely worn dentition is often challenging due to loss of occlusal vertical dimension, loss of tooth structure, uneven wear of teeth creating an uneven plane of occlusion, and para-functional habits. This paper will demonstrate how a clear thermo-forming matrix fabricated from the diagnostic wax-up can be used as a guide to facilitate treatment.