Cone-Beam Computed Tomography–Based Assessment of Virtual Pterygoid Implant Placement in Vietnamese Population

Abstract Pterygoid implants provide a graftless solution for atrophic posterior maxillae but require precise planning. Cone-beam computed tomography (CBCT) enables accurate assessment of implant length, apical engagement, and angulation. Population-specific data for Vietnamese patients remain limited. The study aimed to evaluate virtual pterygoid implant parameters in Vietnamese patients with atrophic maxillae. A cross-sectional study analyzed 110 CBCT scans of patients with residual ridge height 7-mm engagement, >25-degree angulation) underscored anatomical variability. ICC values demonstrated excellent reliability (>0.90). In Vietnamese patients, virtual pterygoid implants of 16- to 18-mm length, 3- to 5-mm apical engagement, and 10- to 15-degree angulation appear most predictable. These ethnicity-specific reference values support individualized CBCT-based planning to optimize stability and minimize risk.