Private practice, Tassin-la-Demi-Lune, France.
Faculty of Dentistry, Université de Montréal, Montreal, Quebec, Canada.
Am J Orthod Dentofacial Orthop. 2019 May;155(5):662-669. doi: 10.1016/j.ajodo.2018.06.013.
The aim of this work was to compare the duration of treatment between orthodontic treatment combined with piezocorticision (OT-PC) and conventional orthodontic treatment (COT), as well as to evaluate the safety, inflammatory process, periodontal health, and soft tissue healing in the OT-PC group.
Twelve patients were included in each group, and their treatment times were compared for preliminary bracket alignment (PBA) and for overall treatment. In the OT-PC group, the inflammatory process was evaluated by quantifying cytokines in the gingival crevicular fluid. A calibrated examiner measured the probing depth (PD), the distance between the gingival margin and the cementoenamel junction (GM-CEJ), and the clinical attachment level (CAL), before and after OT-PC. The presence of gingival scars was evaluated. Bone and root injuries were assessed with the use of cone-beam computed tomography.
The treatment time was significantly reduced in the OT-PC group for PBA in both maxilla (45%; P = 0.001) and mandible (31%; P = 0.023), as well as for overall treatment (52%; P < 0.0001). Although not statistically significant, several inflammatory mediators demonstrated peaks at 3-5 and 16 weeks. There were not significant changes in PD and GM-CEJ after OT-PC treatment, unlike CAL (0.09 ± 0.12 mm; P = 0.024); 47.5% of piezocorticisions caused gingival scars. Only one patient showed no scars. Four cortical bones did not heal completely, and 2 roots had piezoelectric injuries.
OT-PC was effective at reducing the orthodontic treatment time.
本研究旨在比较正畸治疗联合超声骨刀（OT-PC）与传统正畸治疗（COT）的治疗时间，并评估 OT-PC 组的安全性、炎症过程、牙周健康和软组织愈合情况。
每组纳入 12 例患者，比较初步托槽定位（PBA）和总治疗时间。在 OT-PC 组中，通过定量检测龈沟液中的细胞因子来评估炎症过程。一位经过校准的检查者在 OT-PC 前后测量探诊深度（PD）、龈缘至釉牙骨质界（GM-CEJ）的距离和临床附着水平（CAL），评估牙龈疤痕的存在情况。使用锥形束计算机断层扫描评估骨和根损伤。
OT-PC 组在 PBA 时上颌（45%；P=0.001）和下颌（31%；P=0.023）以及总治疗时间均显著缩短（52%；P<0.0001）。尽管没有统计学意义，但几个炎症介质在 3-5 周和 16 周时表现出峰值。OT-PC 治疗后 PD 和 GM-CEJ 没有显著变化，但 CAL 有变化（0.09±0.12mm；P=0.024）；47.5%的超声骨刀切割导致牙龈疤痕。只有 1 例患者没有疤痕。4 块皮质骨未完全愈合，2 个牙根有压电损伤。
OT-PC 可有效缩短正畸治疗时间。
