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目的 探讨无牙颌All-on-4种植修复后患者不同(骀)位(骀)力分布规律,以期得到无牙颌All-on-4种植修复(骀)力分布的提示,为调(骀)提供依据.方法 使用T-ScanⅢ咬合分析系统,测量13例无牙颌患者All-on-4种植修复后不同(骀)位(骀)力分布百分比及咬合时间.结果 最大牙尖交错位时:全牙列(骀)力百分比最大的牙位依次是(4)、(5)、(4)、(5),分别为(17.3±3.1)％、(15.8±4.6)％、(15.5±2.2)％和(15.2±5.5)％,种植体所在的前磨牙区和前牙区分别占(64.0±6.7)％、(19.2±8.0)％;左侧(骀)力百分比为(50.5±6.1)％,右侧为(49.5±6.1)％,两侧差异无统计学意义(P＞0.05).前伸(骀)位:(21)(12)的(骀)力百分比为(90.4±27.7)％,右前区和左前区(骀)力百分比分别为(45.2±32.2)％和(54.8±32.2)％,差异无统计学意义(t=-0.543,P＞0.0S);(骀)接触时间和(骀)分离时间分别为0.18(0.11,0.26)和0.52(0.35,1.14)s.侧方(骀)位时:单牙支持的(骀)型8例,组牙功能(骀)5例,平均(骀)接触时间与(骀)分离时间分别为0.20(0.13,0.34)和1.07(0.58,1.46)s.结论 无牙颌All-on-4种植修复后最大牙尖交错位时(骀)力相对集中于种植体所在的前磨牙区;前伸(骀)位时(骀)力集中于(21)(12);左右侧方(骀)位时(骀)力在前后区域分布均匀,侧方运动非工作侧无接触,单牙支持的(骀)型与组牙功能(骀)均是可接受的(骀)型.“,”Objective To investigate the occlusal force distribution and the characteristics of the occlusion time of patients with All-on-4 rehabilitation at different occlusion position using T-Scan Ⅲ occlusal analysis system.Methods Thirteen volunteers with All-on-4 rehabilitation were included in this study.T-Scan Ⅲ occlusal analysis system was used to measure the occlusal force distribution and the time character of the patients at intercuspal position,protrusive position,and lateral excursive position.Results Maximum intercuspation:the left and right premolars took most of the occlusal force,namely (17.3±3.1)％,(15.8±4.6)％,(15.5±2.2)％ and (15.2±5.5)％(4),(5),(4),(5),the implants areas including the premolar and anterior teeth took (64.0±6.7)％,(19.2±8.0)％ of occlusal force.The left and right sides took the respective percentages of (50.5±6.1)％,(49.5±6.1)％,and there was no difference.Protrusion position:the region (21)(12) commitment to take the percentage of (90.4±27.7)％.Occlusion time:0.18(0.11,0.26) s,disclusion time:0.52 (0.35,1.14) s.At the left and right lateral position,8 patients were single teeth-supported occlusion,5 patients were group fuctional occlusion,the average occlusion time was 0.20(0.13,0.34) s,and DT was 1.07 (0.58,1.46) s.Conclusions At maximum intercuspation:the implants areas including the premolar and anterior teeth were the occlusal force centers;the force concentrated in the area ((21)(12)) at the protrusion position.The lateral occlusal pattern shows multiformity.