Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China.
Department of Prosthodontics, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Clin Implant Dent Relat Res. 2023 Jun;25(3):564-574. doi: 10.1111/cid.13213. Epub 2023 May 2.
To radiographically analyze the effects of tenting screw technique (TS) and onlay bone grafts (OG) in horizontal bone augmentation.
Patients receiving horizontal bone augmentation by TS or OG were selected. The clinical outcomes and cone beam computed tomography (CBCT) data were documented pre-grafting, immediately post-grafting, before and after implantation. The survival rates, clinical complications, alveolar bone width, and volumetric bone augmentation were evaluated and statistically analyzed.
A total of 25 patients and 41 implants were involved in this study, with no grafting failures observed in either the TS group (n = 20) or the onlay group (n = 21). Volumetric bone resorption rate in the TS group (21.34%) was significantly lower than that of the OG group (29.38%). In addition, significant horizontal bone gain was achieved in both groups (TS: 6.15 ± 2.12 mm; OG: 4.86 ± 1.40 mm) during the recovery period, with higher gain in the TS group. No apparent statistical difference in terms of volumetric bone gain was observed between the TS (748.53 mm , 607.47 mm ) and OG group (811.77 mm , 508.49 mm ) immediately post-grafting or after the recovery period.
Both TS and OG achieved satisfactory bone augmentation effects, yet TS resulted in more bone augmentation and better stability than OG, with a reduced use of autogenous bone. Overall, the tenting screw technique can serve as an effective alternative to autogenous bone grafts.
通过影像学分析穹窿状螺钉技术（TS）和骨块移植（OG）在上颌骨水平向增量中的作用。
选择接受 TS 或 OG 行上颌骨水平向增量的患者。记录术前、即刻、种植体植入前及植入后临床效果和锥形束 CT（CBCT）数据。评估并对存活率、临床并发症、牙槽骨宽度和体积骨增量进行统计学分析。
本研究共纳入 25 例患者和 41 枚种植体，TS 组（n=20）和 OG 组（n=21）均未发生移植失败。TS 组的体积骨吸收率（21.34%）明显低于 OG 组（29.38%）。此外，两组在恢复期均获得了显著的水平骨增量（TS 组：6.15±2.12mm；OG 组：4.86±1.40mm），TS 组增加更明显。TS 组（即刻：748.53mm3，607.47mm3；恢复期：811.77mm3，508.49mm3）和 OG 组（即刻：811.77mm3，508.49mm3；恢复期：748.53mm3，607.47mm3）之间的体积骨增量在即刻和恢复期均无明显统计学差异。
TS 和 OG 均获得了满意的骨增量效果，但 TS 比 OG 具有更多的骨增量和更好的稳定性，且自体骨的使用量更少。总的来说，穹窿状螺钉技术可以作为自体骨移植的有效替代方法。
