Three-dimensional volumetric evaluation of deproteinized bovine bone mineral graft dimensional changes after lateral window sinus floor elevation: a long-term retrospective study up to 12 years.

Description :

In this study, we discuss the challenges and methods involved in dental implant placement after tooth extraction, particularly in the posterior maxilla where bone loss occurs rapidly following the loss of teeth. The maxillary sinus often complicates the process, requiring sinus floor elevation (SFEP) to increase bone volume for implant placement. Two main techniques for this procedure are the transalveolar and lateral window approaches. Various graft materials can be used, including autogenous bone (used to be considered ideal), xenografts, and synthetic materials. While autogenous bone provides long-term stability, its use is limited by donor site morbidity. Xenografts have shown promising results with minimal volume loss over time, though long-term data is still limited. Overall, SFEP has proven effective in restoring bone volume and enabling successful implant placement, with high survival rates for implants. This study aims to assess graft volume changes and stability up to 12 years after lateral sinus floor elevation using natural bovine bone. The research will involve patients who underwent external sinus lifts starting 2011 and had pre-operative and post-operative CBCT scans. The study will include a retrospective comparison of graft volume changes using three time points: T0 (pre-operative CBCT, showing residual bone height), T1 (post-operative CBCT acquired at different time points, including immediately after the procedure  T’ and 9-months post-operative scans  T’’), and T2 (long-term post-operative CBCT). The residual bone height from T0 will be excluded in subsequent scans to focus on evaluating changes in graft volume. For the primary outcome  evaluate radiographically

Titulaire :
MENASSA Gabriel

Contact USJ :
gabriel.menassa@usj.edu.lb

Chercheur(s) :
Pr Gabriel MENASSA

Projet présenté au CR, le : 20/06/2024

Projet achevé auprès du CR : 20/05/2026