Kau Chung How, Cronin Andrew James, Richmond Stephen
Heath Park, Cardiff, United Kingdom From the Department of Dental Health and Biological Sciences, Wales College of Medicine; the Department of Biology, Life, and Health Sciences, Cardiff University; and the Department of Oral and Maxillofacial Surgery, Cardiff and Vale NHS Trust, University Hospital of Wales.
Plast Reconstr Surg. 2007 Jun;119(7):2192-2199. doi: 10.1097/01.prs.0000260707.99001.79.
Advances in three-dimensional technology have enabled applications for the clinical setting to be created and used in routine diagnosis, treatment planning, and patient education. The objectives of this prospective clinical trial were to determine the volume changes associated with facial swelling following orthognathic surgery.
Twelve subjects requiring orthognathic surgery were recruited for the study. Laser scanned images of the subjects were obtained under a reproducible, controlled environment with two laser-scanning devices assembled as a stereo pair. Three-dimensional laser scans were recorded over six time periods, as follows: T1, presurgical scan; T2, 1 day postoperatively; T3, 1 week postoperatively; T4, 1 month postoperatively; T5, 3 months postoperatively; and T6, 6 months postoperatively.
The results showed a clinical difference in the mean shell deviations between bimaxillary and single-jaw orthognathic surgery. Furthermore, the results suggest that the mean volume of swelling was reduced by approximately 60 percent within the first month after surgery. Finally, the amounts of swelling following surgery were greater in bimaxillary cases. The recovery in the swelling was also faster in this group of patients.
Three-dimensional imaging has opened up new avenues of patient care and treatment evaluation. The results have shown that the laser scanning device and the method described are a reliable and accurate measure of facial swelling following surgery.
三维技术的进步使得能够创建适用于临床环境的应用程序，并将其用于常规诊断、治疗规划和患者教育。这项前瞻性临床试验的目的是确定正颌手术后面部肿胀相关的体积变化。
招募了12名需要进行正颌手术的受试者参与该研究。在可重复、受控的环境下，使用两台组装成立体对的激光扫描设备获取受试者的激光扫描图像。在六个时间段记录三维激光扫描结果，如下：T1，术前扫描；T2，术后1天；T3，术后1周；T4，术后1个月；T5，术后3个月；T6，术后6个月。
结果显示双颌和单颌正颌手术之间平均壳偏差存在临床差异。此外，结果表明术后第一个月内肿胀的平均体积减少了约60%。最后，双颌病例术后肿胀程度更大。该组患者肿胀的恢复也更快。
三维成像开辟了患者护理和治疗评估的新途径。结果表明，所描述的激光扫描设备和方法是术后面部肿胀的可靠且准确的测量方法。
