International Journal of Advances In Case Reports

ASSESSMENT OF MANDIBULAR ALVEOLAR BONE PARAMETERS IN IRAQI ADULTS USING CONE BEAM COMPUTED TOMOGRAPHY

Hemn Masoud Salam and Manar Younis Abdul-Qadir

dr.hemn_dent@yahoo.com

Cortical bone thickness, Inter radicular distance, CBCT.

Background and objectives: The increased popularity of using temporary anchorage devices like miniscrews in orthodontic treatment makes it necessary to have a comprehensive knowledge of the morphology of mandibular alveolar processes to help clinicians in selecting optimal sites for miniscrew installation. This study aimed to measure the alveolar cortical bone thickness and interradicular spaces in four sites of each side of mandible, among different sites and levels from cementoenamel junction. Materials and Methods: This study was conducted using cone beam computed tomographic records of 40 subjects (18 male, 22 female) with age range of 20-35 years. The radiographic images for both right and left sides of mandible were used to measure; cortical bone thickness both buccally and lingually, width of alveolar process and interradicular distances at buccal, middle and lingual aspects. The interradicular sites studied were: between canine and first premolar, first and second premolars, second premolar and first molar, and first and second molars. All these sites were examined at three different levels (4, 6 and 8mm) from cemento-enamel junction. The NNT software was used to process the radiographic images and to perform the measurements. Results: all alveolar bone parameters showed an increased value on moving in apical direction. Lingual cortical bone was thicker than buccal cortical bone with significant difference noticed in most sites and levels. All variables in mandible showed the highest dimensions between first and second molars. Regarding levels of measurement the highest dimensions were recorded at 8 mm level for all parameters. Conclusion: The cortical bone for all levels of measurement showed adequate thickness. Adequate alveolar process width was available for insertion of 6 mm screw in all sites and levels. Adequate interradicular distance was found distal to first premolar at the 3 levels with increased distance on moving apically and posteriorly.