Prospective study on single implant retained-overdentue

对于下颌无牙颌患者，在模拟模型上对1个(中线)或2个种植体(左右尖牙区)辅助的种植体覆盖进行生物力学研究，对于1个种植体支撑体，无论附着体的种类，颊、右、左侧均观察到拉伸应变，舌侧出现压缩应变。与第一前磨牙相比，第一磨牙周围软组织的压力分布较大。同样，在两种种植体支撑体中，无论附着体类型如何，颊内侧和舌侧均出现张应变，舌侧和内侧均出现压应变。第一磨牙区周围软组织的压力分布高于第一前磨牙区。

For mandibular edentulous patient, biomechanical study was performed on the implant overdeture assisted by one (midline) or two implants (left and right canine regions) on the simulation model.As for the one implant support, tensile strain was observed on the buccal, right, and left sides, and compressive strain was occurred on the lingual side regardless of kinds of the attachments. The greater pressure distribution was shown on the soft tissue around the first molar region compared to the first premolar region. Similarly, in the two implant support, tensile strain was observed on the buccal and medial sides, and compressive strain was occurred on the lingual and medial sides regardless of kinds of the attachments. The pressure distribution on the soft tissue around the first molar region was higher than that of the first premolar region.