Abstract: BACKGROUND: At present, bone defect after tooth loss due to periodontitis and trauma is common and the application of various kinds of bone augmentation techniques has partially solved these problems. However, various commonly used bone augmentation techniques have limitations to varying degrees. To alleviate the above-mentioned problems, an improved technique, bone ring technique, has been proposed to provide clinical workers with more options for bone augmentation.
OBJECTIVE: To summarize and review the related research trends of bone ring technique and its clinical application. 
METHODS: A computer-based search of PubMed, WanFang, VIP, and CBM was performed by the first author. The keywords were “dentition defect, bone augmentation, dental implants, bone defect, bone graft material, bone ring technique” in English and Chinese. The retrieval time was from January 1986 to February 2022. A total of 431 articles were initially retrieved followed by screening, analysis, and summarization, and 60 articles were finally included for literature review.
RESULTS AND CONCLUSION: Bone ring technique with concurrent dental implantation can shorten treatment time and avoid secondary operation in patients. Moreover, due to the good mechanical properties, this method is more conducive to the reconstruction and recovery of soft and hard tissue morphology. However, there are also some limitations, such as poor fixation, insufficient bone mass to meet the needs of patients with severe bone defects, and unacceptability of opening a second surgical area. Therefore, more high-quality, long-term and large-sample follow-up studies are still needed to continuously improve the bone ring technique so that it can better cope with dental implantation treatment for various types of dentition defects and bone defects.

Key words: dentition defect, dental implantation, bone defect, bone augmentation, bone graft material, bone ring technique