TƯƠNG QUAN GIỮA IMPLANT CHÂN BƯỚM ẢO VÀ XOANG HÀM TRÊN

Abstract

Introduction: Posterior maxillary teeth loss with severe bone resorption and maxillary sinus expansion often poses significant challenges for dental implant placement due to low bone quality and quantity. Pterygoid implants offer an effective solution for such cases. Among these, the relationship with the maxillary sinus is a critical factor in planning pterygoid implant placement. Methods and Materials: This study analyzed 90 cone beam computed tomography (CBCT) scans from Vietnamese patients with unilateral total posterior maxillary molar loss and residual bone height less than 3 mm. CBCT files were imported into Blue Sky Plan software for virtual pterygoid implant planning. The relationship between the virtual pterygoid implant and the maxillary sinus was categorized into 4 types (A, B, C, D). Results: The mean age of the study participants was 63.01 ± 6.30 years, with 54.4% males and 45.6% females. Regarding the correlation between virtual pterygoid implants and the maxillary sinus, the majority of cases (88.9%) fell into type A (implant entirely outside the sinus). The remaining types included: type B (one side of the implant within the sinus) at 4.4%, type C (less than half the implant body entirely within the sinus) at 2.2%, and type D (more than half the implant body entirely within the sinus) at 4.4%. No statistically significant differences were found in the implant-sinus relationship based on gender (P=0.815) or age group (P=0.621). Conclusion: This study indicates that, in the surveyed patient sample, a large proportion of virtual pterygoid implants could be placed entirely outside the maxillary sinus. A thorough understanding of the pterygoid region's anatomy is crucial for the success of this technique, supporting the development of technical recommendations for pterygoid implant placement.