International Endodontic Journal · 1991 · 68 citations · 12 references
DentistryEndodonticsOral RadiologyDental RadiologyOral AnatomyRadiographic AnatomyDental AnatomyDental ImagingMandibular RadiographyPeriapical RadiographyRoot AnatomyRoot Canal AnatomyCanalsDental Root Canal AnatomyMandibular Incisor Canal AnatomyPeriapical Radiographic DiagnosisRadiographic Canal InterpretationRadiographic Root Canal AssessmentRoot Canal Anatomy VariationsRoot Canal Anatomy Visualization
Four hundred and fifty-five extracted mandibular incisor and 340 extracted mandibular premolar teeth were radiographed to assess the incidence of twin canals as visualized on radiographs taken in the mesio-distal direction. The ability to detect the presence of these twin canals by viewing radiographs taken in the standard bucco-lingual direction was then assessed. Using the guideline that 'disappearance or narrowing infers division' when viewing these radiographs resulted in a failure to diagnose one-third of the twin canals.
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