使用2种植体，1和1内侧远端先前放在单个种植体证明是可靠的。
Using 2 implants, 1 mesial and 1 distal to the previously placed single implant proved reliable.
目的：评价大直径种植体修复缺失单个磨牙的临床效果，并对疗效加以讨论。
Object: the aim of this study was to evaluate the success rates of root-type titanium implants with large diameter that placed in single molar.
目的：分析单个下颌磨牙缺失时不同设计的种植修复的种植体-骨界面的应力分布情况。
Objective: to study the effects of different designs in single mandibular molar implant restoration on the stress distribution of implant-bone interface.
目的模拟单个下颌磨牙缺失的种植修复，分析不同下颌骨形态对种植体骨界面应力分布的影响。
Objective to study the influence of different shape of lower jaw on stress distribution at bone interface in the mandibular molar region of implant restoration models.
方法：对20例单个磨牙缺失的患者进行种植义齿修复，在完成修复后1个月、3个月、6个月复诊，以后每年复诊1次，对种植体稳固性、种植体周围组织进行随访评价。
Methods: 20 cases underwent implant-supported denture restoration of single molar. Stability and peripheral tissue of implant fixtures were evaluated after 1, 3, 6months and once every year later.
方法：对20例单个磨牙缺失的患者进行种植义齿修复，在完成修复后1个月、3个月、6个月复诊，以后每年复诊1次，对种植体稳固性、种植体周围组织进行随访评价。
Methods: 20 cases underwent implant-supported denture restoration of single molar. Stability and peripheral tissue of implant fixtures were evaluated after 1, 3, 6months and once every year later.
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