Statement of problem

The performance of the autogenous bone ring (ABR) technique used for the vertical bone augmentation procedure has not yet been determined.

Purpose

The purpose of this systematic review was to investigate whether the ABR technique for the vertical bone augmentation procedure with simultaneous implant placement enhances the histologic and histomorphometric outcomes in surgically created bone defects in animal models.

Material and methods

An electronic search of 3 databases, Medline/PubMed, Science Direct, Lilacs, and a manual search of a reference list of relevant studies were performed. Only animal studies regarding vertical bone augmentation by using the ABR technique with simultaneous implant placement in surgically created bone defects were included in the review. The SYstematic Review Center for Laboratory Animal Experimentation tool was used to determine the risk of bias assessment, and the quality of included studies was assessed by using the Animal Research: Reporting in Vivo Experiments guidelines.

Results

Five studies were included in the qualitative analysis based on the inclusion and exclusion criteria. One study comparing the ABR technique with the bovine and biphasic ring reported a high percentage of bone area and bone implant contact of the ABR at 5 weeks of osseointegration. Similar histologic findings were reported in another study at 4 months of healing, but contrasting data were reported at 8 months. Another study reported an increase in the percentage of bone area and bone implant contact of the ABR technique from 3 months to 6 months of osseointegration. Two studies reported an increase in the percentage of bone area, and 1 study reported a decrease in the mean of bone implant contact, both with simultaneous and staged implant procedures.

Conclusion

Based on the limited available studies, the use of the ABR technique for the vertical bone augmentation procedure with simultaneous implant placement presented optimal histologic and histomorphometric outcomes in surgically created bone defects in animal models. However, the results of the current review are not sufficiently robust to support the use of the ABR technique for vertical bone augmentation in humans.

中文翻译：

---

用于同时植入种植体的垂直骨增强手术的自体骨环：动物研究中组织学和组织形态测量结果的系统评价

问题陈述

用于垂直骨增强手术的自体骨环 (ABR) 技术的性能尚未确定。

目的

本系统评价的目的是研究用于同时植入种植体的垂直骨增强手术的 ABR 技术是否增强了动物模型中手术产生的骨缺损的组织学和组织形态测量结果。

材料与方法

对 3 个数据库（Medline/PubMed、Science Direct、Lilacs）进行了电子搜索，并对相关研究的参考列表进行了手动搜索。该评价仅包括关于使用 ABR 技术进行垂直骨增量的动物研究，并同时在手术造成的骨缺损中植入种植体。SYstematic Review Center for Laboratory Animal Experimentation 工具用于确定偏倚评估的风险，并使用Animal Research: Reporting in Vivo Experiments 指南评估纳入研究的质量。

结果

五项研究根据纳入和排除标准纳入定性分析。一项将 ABR 技术与牛和双相环进行比较的研究报告称，在骨整合 5 周时，ABR 的骨面积和骨植入物接触率很高。另一项研究在愈合 4 个月时报告了类似的组织学发现，但在 8 个月时报告了对比数据。另一项研究报告了 ABR 技术的骨面积和骨植入物接触的百分比从骨整合的 3 个月增加到 6 个月。两项研究报告骨面积百分比增加，一项研究报告骨植入物接触的平均值减少，同时进行和分阶段植入程序。

结论

基于有限的可用研究，将 ABR 技术用于垂直骨增强手术并同时植入种植体，在动物模型中手术产生的骨缺损中呈现出最佳的组织学和组织形态测量结果。然而，当前审查的结果不足以支持将 ABR 技术用于人类垂直骨增强。