Comparative Evaluation of Bone Ring versus Particulate Bone Graft using CBCT in Buccal Bone Augmentation with Simultaneous Implant Placement: A Randomised Controlled Trial

Abstract

Introduction: Dental implant placement in defective sockets often compromises its predictability and long-term success. Although various techniques have been suggested for augmentation of defects around implants, the most recent advanced three-dimensional reconstruction technique is the Bone Ring Technique (BRT). Aim: To compare and evaluate the buccal bone regenerative capacity of bone ring and particulate bone graft. Materials and Methods: This randomised controlled parallel group trial was conducted at the Department of Periodontology, Karpaga Vinayaga Institute of Dental Sciences, Kancheepuram, Tamil Nadu, India, for a duration of six months, from August 2025 to February 2026. In the present study, among 24 edentulous sites, 12 were included in the Bone ring group (Group A), and 12 were included in the particulate graft group (Group B). Buccal height, palatal height and ridge width were assessed between baseline and six months. Wilcoxon Signed Ranks Test and Mann-Whitney U Test were used for intra- and intergroup comparison, respectively. The Statistical Package for Social Sciences (SPSS) software, version 21.0 was used, and p<0.05 was considered significant. Results: The CBCT analysis before and after six months of implant placement showed that both group A and group B demonstrated significant height and width augmentation of buccal bone. While comparing the augmentation between group A and group B, group A showed significantly higher bone gain than group B, in both buccal height and width, with p-values of 0.037 and < 0.001, respectively. Conclusion: The Bone Ring Technique (BRT) is a newer viable option for restoring complex defects around dental implants with three-dimensional bone augmentation.