Macro anatomical variations of human dry mandible in the perspective of cortico-basal implantology

Abstract

Background: Conventional dental implants are not possible in the edentulous mandible where there is a lack of enough residual alveolar bone. Those cases can be served better with an alternate implant system known as Cortico basal implantology. The implants are inserted into denser and more stable basal and cortical bone. In this unconventional implant system, implants are placed and prosthetically loaded immediately. There is a need to know the macroscopic dimensions of basal cancellous and cortical bone of edentulous mandible to achieve clinical success. Methods: Dry mandibles were collected from Department of Anatomy, CMSDH, Kolkata. The basal cancellous and cortical bone samples were obtained from dry mandible with the help of rotary instrument. The thickness of those bones was measured with the help of vernier caliper and/or gauge meter. Results: The mean thickness of basal cancellous bone heights of anterior mandible is 20.43±0.08 mm. and cortical bone in anterior, premolar and molar regions are 2.71±0.03 mm., 2.82±0.04mm., 3.09±0.04mm. respectively. Conclusions: The morphological dimensions of cortical and basal cancellous bone have been derived.