[Clinical comparison of xenograft versus synthetic bone graft materials in micro crestal flap-alveolar ridge preservation following extraction of molars].

OBJECTIVE: To compare the clinical outcomes between xenogeneic bone graft materials primarily composed of deproteinized bovine bone mineral (DBBM) and synthetic bone graft materials primarily composed of hydroxyapatite (HA) used in micro crestal flap-alveolar ridge preservation (MCF-ARP) of periodontally compromised molars, so as to provide a reference for their application and promotion. METHODS: In this retrospective case series study, patients who received treatment between October 2024 and April 2025 were enrolled. All the patients underwent MCF-ARP, using either DBBM or HA. Hard tissue changes and alveolar ridge contour collapse were evaluated and compared between the two groups preoperatively and 6 months postoperatively using cone beam computed tomography (CBCT) and intraoral scanning. Soft tissue healing process after the surgery was also assessed. RESULTS: < 0.01). CONCLUSION: Within the limitations of this study, the analysis suggests that there is no statistically significant difference in hard tissue and alveolar ridge contour parameters 6 months after MCF-ARP following extraction of periodontally compromised molars. However, early soft tissue healing is faster when using DBBM. Future randomized controlled trials with histological analysis are warranted for further validation.