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Visualisation of the mandibular canal by different radiographic techniques
Author(s) -
Lindh Christina,
Petersson Arne,
Klinge Björn
Publication year - 1992
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1034/j.1600-0501.1992.030207.x
Subject(s) - radiography , tomography , medicine , mandibular canal , coronal plane , spiral computed tomography , computed tomography , radiology , orthodontics
6 mandibles were radiographically examined bilaterally to visualise the mandibular canal. 5 imaging techniques were used: periapical radiography, panoramic radiography, hypocycloidal tomography, spiral tomography and computed tomography (CT). Panoramic radiographs were obtained with 2 different X‐ray machines. The CT‐examinations comprised direct images and standard reconstructions based on axial slices. The specimens were subsequently sectioned for contact radiography. The visibility of the mandibular canal was estimated by 3 observers at special reference points on all radiographs and classified as clearly visible, questionable visibility or not visible. The contact radiographs served as the “gold standard”. The inter‐observer and the intra‐observer agreement were assessed by calculating the overall agreement and the x. value. Direct coronal computed tomography, as well as spiral and hypocycloidal tomography, gave better visualisation of the mandibular canal than periapical and panoramic radiography.