Santoro Margherita, Galkin Scott, Teredesai Monica, Nicolay Olivier F, Cangialosi Thomas J
Division of Orthodontics, Columbia University, School of Dental and Oral Surgery, 635W 168th Street, P&S Box 20, New York, NY 10032, USA.
Am J Orthod Dentofacial Orthop. 2003 Jul;124(1):101-5. doi: 10.1016/s0889-5406(03)00152-5.
Measuring plaster models by hand is the traditional method of assessing malocclusion. Recent technologic advances now allow the models to be digitized, measured with software tools, stored electronically, and retrieved with a computer. OrthoCAD (Cadent, Fairview, NJ) performs this service. The purpose of this study was to evaluate the reliability of the OrthoCAD system. Two independent examiners measured tooth size, overbite, and overjet on both digital and plaster models. The results were compared, and interexaminer reliability was assessed. The study sample consisted of 76 randomly selected pretreatment patients. The results showed a statistically significant difference between the 2 groups for tooth size and overbite, with the digital measurements smaller than the manual measurements. However, the magnitude of these differences ranged from 0.16 mm to 0.49 mm and can be considered clinically not relevant. No difference was found between the 2 groups in the measurement of overjet. Interexaminer reliability was consistent for both the plaster and the digital models.
手工测量石膏模型是评估错牙合畸形的传统方法。最近的技术进步使模型能够被数字化，使用软件工具进行测量，以电子方式存储，并通过计算机检索。OrthoCAD（Cadent公司，新泽西州费尔维尤）提供这项服务。本研究的目的是评估OrthoCAD系统的可靠性。两名独立的检查者在数字模型和石膏模型上测量牙齿大小、覆牙合和覆盖。比较结果，并评估检查者间的可靠性。研究样本包括76名随机选择的治疗前患者。结果显示，两组在牙齿大小和覆牙合方面存在统计学上的显著差异，数字测量值小于手工测量值。然而，这些差异的幅度在0.16毫米至0.49毫米之间，在临床上可认为无关紧要。两组在覆盖测量方面未发现差异。石膏模型和数字模型的检查者间可靠性均一致。
