摘要
目的:研究一种以牙种植体为中心来测量其周围骨壁厚度的方法,并对由此方法制作完成的改良游标卡尺进行精确性评价。方法:使用SolidEdge软件设计制作一种以ITI种植体为中心来测量其周围骨壁厚度的改良游标卡尺;将种植体植入透明复合树脂块中;使用改良游标卡尺测量种植体周围树脂壁厚度,然后将树脂块连同种植体沿其长轴纵切开;拍照并用Digimizer软件对树脂块纵剖面实际壁厚进行测量;最后将两组数据通过SPSS软件进行配对t检验。结果:改良游标卡尺组测量结果为7.97-8.09mm,树脂块纵剖面组测量结果为7.98-8.12mm,标准差为0.03,t值为1.09,P值为0.28,两种测量方法差异无统计学意义。结论:以种植体为中心的改良游标卡尺满足了设计要求,精确度高且可重复性强,可用于评估种植体唇颊侧骨壁的骨吸收情况。
Objective:To investigate a method of measuring the bone plate thickness with the dental implant as the center and to evaluate the accuracy of an improved vernier caliper by the method. Methods:An improved caliper were made by Solid Edge software, which had an ITI implant as the center for measuring the bone wall thickness. First, the implant was placed into the transparent composite resin block. Second, the lateral wall thickness of the transparent compound resin surrounding the implant was measured by the improved caliper. Then the resin block with the implant was cut into halves through the long axis of implant. Third, the exact thickness was digitized and measured by Digimizer software. The data from the two groups were compared by using paired t test with SPSS software. Results:The results detected by the improved caliper groups were 7.97-8.09 mm, while that were 7.98-8.12 mm of the resin block longitudinal groups. The standard deviation of two sets was 0.03, the t value was 1.09, and the P value was 0.28. There was no statistical difference between the two methods. Conclusions:The improved caliper was fit for measuring the bone plate thickness with the dental implant as the center. With higher precision and better repeatability, it could be used to estimate the loss of the buccal or labial bone plate.
出处
《现代生物医学进展》
CAS
2009年第24期4767-4769,共3页
Progress in Modern Biomedicine
基金
陕西省科技攻关计划项目(2008K14-03)
