Factors affecting stability of surgical guides in mandibular unilateral distal extension situation: An in vitro study.

Purpose: Unilateral tooth-supported guides reported less effective implant placement than bilateral tooth-supported guides. Therefore, this study evaluated the effect of guide design, replaced tooth location, and applied forces on implant deviation and guide stability of mandibular unilateral tooth-supported guides.

Materials And Methods: Ten epoxy resin models with soft tissue simulated material were used.

Prevalence of bifid and trifid mandibular canals with unusual patterns of nerve branching using cone beam computed tomography.

Lack of knowledge concerning the inferior alveolar canal anatomical variations had proven to increase the incidence of surgical complications, so the study aimed to assess the configuration and prevalence of bifid and trifid mandibular canals using cone beam CT in Egyptian subpopulation. Cone beam CT scans of 278 patients (530 hemi-mandibles) were included in the study, in which bifid and trifid mandibular canals or any other branching patterns were recorded and evaluated. Bifid canals were categorized following Naitoh classification, and the diameter of the main mandibular and accessory canals was measured.