Ashman Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, New York, USA.
Int J Oral Maxillofac Implants. 2012 Jul-Aug;27(4):770-5.
To evaluate three-dimensionally the bone change following ridge preservation procedures (RPP) using computed tomography (CT).
Subjects in need of implant therapy were enrolled in the study. The teeth were extracted, and sockets underwent RPP with a bioactive glass (Inion BioRestore, Inion Oy). The patients were scanned with CT within 1 week and 3 months after surgery. Horizontal and vertical radiographic measurements were performed on superimposed CT scans to evaluate bone changes in the alveolar sites during the 3-month period.
Thirteen subjects participated, and 32 teeth were extracted and treated with grafting. Alveolar sites treated with RPP demonstrated a preservation of about 77% of the original width dimensions, with a mean loss of 1.8 ± 1.1 mm in width. Moreover, it was observed that the vertical loss of buccal bone was 2.7 ± 1.1 mm, while the loss of lingual bone was 1.9 ± 1.2 mm.
The CT evaluation was helpful to assess that the bone loss in width was less than the vertical bone loss of both walls 3 months after RPP.
使用计算机断层扫描（CT）三维评估骨保存术后（RPP）的骨变化。
本研究纳入需要接受种植治疗的患者。拔牙后，用生物活性玻璃（Inion BioRestore，Inion Oy）进行牙槽嵴保存。术后 1 周和 3 个月，患者接受 CT 扫描。对重叠 CT 扫描进行水平和垂直放射测量，以评估术后 3 个月牙槽骨部位的骨变化。
13 名患者参与研究，共 32 颗牙被拔出并接受了移植治疗。RPP 治疗的牙槽嵴部位保持了约 77%的原始宽度，平均宽度损失为 1.8 ± 1.1mm。此外，还观察到颊侧骨的垂直丧失为 2.7 ± 1.1mm，舌侧骨的垂直丧失为 1.9 ± 1.2mm。
CT 评估有助于评估 RPP 后 3 个月宽度骨丢失小于颊舌侧骨壁的垂直骨丢失。
