摘要
目的探讨锥形束CT颌骨密度与种植体植入扭矩的关系。方法随机选择拟行种植修复的63例牙列缺损患者作为研究对象,经锥形束CT扫描Kavo eXam Vision软件测量获得各种植体术区颌骨密度的HU值,按照Biomet 3i根形种植体的要求,植入83颗种植体并记录植入扭矩,根据散点图的相关数据求出线性回归方程,分析颌骨密度与植入扭矩的相关性。结果锥形束CT测量结果显示:上颌前部和后部的颌骨密度分别为(415.44±147.14)HU和(336.00±148.04)HU,下颌前部和后部的颌骨密度分别为(815.09±88.08)HU和(537.08±167.28)HU。上颌前部和后部的植入扭矩分别为(43.08±10.52)Ncm和(36.90±11.68)Ncm,下颌前部和后部的的植入扭矩分别为(50.00±0.00)Ncm和(44.05±11.17)Ncm。相关性分析结果显示锥形束CT扫描所得颌骨密度与种植体植入扭矩高度相关(r=0.536,P<0.01)。结论根据锥形束CT扫描测得的术区颌骨密度可对种植体植入扭矩进行初步评估,有助于手术方案的制定。
Objective To explore the relationship between the jaw bone density measured by the cone beam computed tomography and the torque of implants. Methods Sixty three patients with dentition defect who planned to receive implant prosthesis were randomly selected. Patients were scanned by the cone beam computed tomography and HU values of the jaw bone density at implant sites were measured by the Kavo eXam Vision software. Torque values of 83 implants were recorded according to requirements of the cylinder root form implant of Biomet 3i. The linear regression equation was then acquired based on the data of scatter diagram and the relationship between the jaw bone density and the torque of implants was analyzed. Results The measurement results of cone beam computed tomography showed that bone density values of the maxillary anterior, maxillary posterior, mandibular anterior, and mandibular posterior were （415.44±147.14） HU, （336.00±148.04） HU, （815.09±88.08） HU, and （537.08±167.28） HU, respectively. The torque values of implants of the maxillary anterior, maxillary posterior, mandibular anterior, and mandibular posterior were （43.08±10.52） Ncm, （36.90±11.68） Ncm, （50.00±0.00） Ncm, and （44.05±11.17） Ncm, respectively. The results of correlation analysis indicated that the jaw bone density measured by the cone beam computed tomography and the torque of implants were highly correlated （r=0.536, P〈0.01）. Conclusion According to the jaw bone density at implant sites measured by the cone beam computed tomography, the torque of implants can be preliminarily estimated and it is helpful for making the operation plan.
出处
《上海交通大学学报（医学版）》
CAS
CSCD
北大核心
2014年第6期894-897,共4页
Journal of Shanghai Jiao tong University:Medical Science
关键词
颌骨密度
种植体
锥形束CT
种植扭矩
jaw bone density
implant
cone beam computed tomography
implant torque
initial stability
