Volume : VII, Issue : IV, April - 2018

TRANS-TOMOGRAPHIC EVALUATION OF IMPLANT SITE

Anand Choudhary, Pallavi Kesarwani

Abstract :

Aim: The aim of this study was to evaluate the reliability of panoramic and cross sectional radiography using panoramic machine, to accurately depict the anatomical structures in posterior region of the mandible which is of great help in implant planning.

Methods and Materials: The study was carried out using 21 dry edentulous human hemi mandibles. The area selected for analysis was 2 cm distal to anterior limit of mental foramen.  A panoramic radiograph and a cross-sectional radiograph were made for the specimen using panoramic machine (Gendex Orthoralix 9200). The mandible was sectioned at selected site. The distance from the alveolar crest to superior border of mandibular canal and inferior border of mandible was measured in panoramic and cross sectional radiograph at the selected site and compared with the actual measurements in the cut- section of the mandible (Gold Standard)

Results:All the panoramic and cross sectional radiographs accurately depicted the cortical border of the mandible and the inferior alveolar canal. The measurements were more in panoramic radiographs by a mean of 0.29mm ± 0.25mm in cross sectional radiographs by a mean of 0.62mm ± 0.20mm compared to gold standard for bone height above superior border of mandibular canal. The difference between the measurements made in radiographs and cut section was statistically significant (Wilcoxon’s signed ranked test).

Conclusions:It was concluded that both the imaging techniques were reliable for vertical linear measurements in the posterior region of the mandible. However a minimum of 2mm of safety margin is recommended. In cases where additional information about bucco-lingual position of mandibular canal is required, cross sectional radiograph should be used.

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Article: Download PDF    DOI : https://www.doi.org/10.36106/gjra  

Cite This Article:

Anand Choudhary, Pallavi Kesarwani, TRANS-TOMOGRAPHIC EVALUATION OF IMPLANT SITE , GLOBAL JOURNAL FOR RESEARCH ANALYSIS : Volume-7 | Issue-4 | April-2018

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