A retrospective comparative fractal and radiomorphometric analysis of the effect of bisphosphonate use pattern and duration on the mandible.

Aims: The aim of this study was to investigate the effect of two different bisphosphonate types on bone using dental panoramic radiographs (DPRs) and to compare these findings with a healthy cohort.

Study Design: Panoramic dental radiographs of bisphosphonate users (30) and healthy individuals (30) were retrospectively evaluated for the study. Regarding FA, standardized 50 × 50 pixel regions of interest (ROI) were identified for each patient.

In vitro comparison of fixation methods used in sagittal split osteotomy with a major advancement and counterclockwise rotation.

The aim of this study was to compare the mechanical characteristics of five commonly used fixation methods for sagittal split osteotomy with a major advancement and counterclockwise rotation with a model that mimics the human mandible. Twenty-five virtually osteotomised and 3-dimensionally printed hemimandibles were fixed with an 8mm gap at the upper border and a 12mm gap at the lower border of the osteotomy. The following fixation methods were used: Group 1: a single miniplate, group 2: two miniplates, group 3: three bicortical screws in the upper border, group 4: three bicortical screws in an inverted L configuration, group 5: a single miniplate and a bicortical screw.