Publication:

Gender-based variations in autogenous bone block graft availability within the mandibular ramus: a cone beam computed tomographic comparative analysis

Background Alveolar ridge resorption following tooth loss often necessitates regenerative procedures prior to implant placement. Autogenous bone grafts, particularly from the mandibular ramus, are widely used due to their favourable properties. However, anatomical variations influenced by gender and age can affect graft suitability. Objective was to evaluate gender- and age-related differences in the volume, density, cortical thickness, and vertical height of harvestable bone from the mandibular ramus using cone-beam computed tomography (CBCT).

Methods This analytical cross-sectional study analyzed CBCT scans of 40 patients (20 males, 20 females) aged 20-60 years. Measurements of bone volume, density (gray values), cortical plate thickness, and vertical height were taken. Data were statistically analyzed, significance level set at p 0.05). However, age had a significant inverse relationship with bone quality. Participants aged 20-40 years demonstrated higher bone density (1212.2±157.7 GV) and cortical thickness (2.32±0.18 mm) compared to those aged 41-60 years (975.8±59.6 GV; 1.80±0.12 mm), with p<0.001 for both. Bone volume and height were not significantly affected by age.

Conclusions Mandibular ramus offers a reliable intraoral donor site for autogenous bone grafting across genders. However, bone quality parameters such as density and cortical thickness decline significantly with age, highlighting the importance of age-specific assessment during preoperative planning.