Determining the Causes for Loss of Teeth by Using Preoperative Dental CT Study for the Needs of Dental Implantology

The rapid development of dental implantology in recent years made the use of Dental CT preoperative study a common practice. An important part of the preoperative study is to identify the actual cause for loss of teeth. Inflammatory diseases require thorough rehabilitation prior to surgical procedures for bone augmentation and subsequent implantation. Systemic diseases leading to loss of teeth require systemic treatment. The presence of some of them is contradictory for implants` placement. After analyzing preoperative Dental CT scans of 292 jaws in our retrospective study, we found that in 44 % of the cases the cause for tooth loss was apical periodontitis, in 43 % - marginal periodontitis or inflammatory processes starting from marginal periodontium, and in the remaining 13 % the cause was one of the listed below hypodontia, trauma, tumor formation, cyst, fibrous dysplasia or bone leontiasis.