Shqaidef Abedalrahman, Ayoub Ashraf F, Khambay Balvinder S
Orthodontic Postgraduate Student, Glasgow Dental School, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow.
Professor of Oral and Maxillofacial Surgery, Glasgow Dental School, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow.
Br J Oral Maxillofac Surg. 2014 Sep;52(7):609-14. doi: 10.1016/j.bjoms.2014.04.010. Epub 2014 Jun 2.
Computer packages have been introduced to simulate the movements of the jaw in three dimensions to facilitate planning of treatment. After final 3-dimensional virtual planning, a rapid prototype wafer can be manufactured and used in theatre. Our aim was to assess the accuracy of rapid prototyping of virtual wafers derived from laser scanned dental models using CAD/CAM software. Upper and lower plaster models from 10 orthognathic patients, the articulated models, and the conventional wafers were scanned. The virtual wafers were made from CAD/CAM software, and printed on a stereolithographic printer. We also scanned the articulated models with rapid prototype wafers in place. The validity of the final rapid prototype wafer was measured by the accuracy with which upper and lower models related to one another. The absolute mean error of the rapid prototype wafer when aligned with the dental models was 0.94 (0.09) mm. The absolute distance of the 2 models articulated by conventional and rapid prototype wafers ranged from 0.04 - 1.73mm. The rapid prototype wafers were able to orientate the upper and lower dental models with an absolute mean error of 0.94 (0.09) mm, but it ranged from 0.04-1.73mm.
已经引入了计算机软件包来模拟颌骨的三维运动，以方便治疗计划的制定。在完成三维虚拟计划后，可以制造一个快速原型薄片并在手术中使用。我们的目的是评估使用CAD/CAM软件从激光扫描的牙科模型中快速制作虚拟薄片的准确性。对10名正颌患者的上下石膏模型、咬合模型和传统薄片进行了扫描。虚拟薄片由CAD/CAM软件制作，并在立体光刻打印机上打印。我们还对放置了快速原型薄片的咬合模型进行了扫描。最终快速原型薄片的有效性通过上下模型相互关联的准确性来衡量。快速原型薄片与牙科模型对齐时的绝对平均误差为0.94（0.09）毫米。传统薄片和快速原型薄片连接的两个模型的绝对距离在0.04 - 1.73毫米之间。快速原型薄片能够将上下牙科模型定位，绝对平均误差为0.94（0.09）毫米，但误差范围在0.04 - 1.73毫米之间。
