Relation between the supporting load of the abutment teeth and the movility of the partial denture

为阐明基牙支承载荷与可摘局部义齿活动度的关系，本研究从牙周组织支承载荷与牙合形态老化的关系、牙周组织支承载荷与咀嚼控制系统的控制能力、义齿植入后牙周组织及剩余牙槽骨的纵向变化等4个方面探讨了义齿稳定性与咬合因素的关系。1.义齿在侧向滑动运动中的侧向位移为200~350微米，当牙合面侧倾角发生变化时，咀嚼行程末期的路径方式很快就适应了咬合末期的路径方式。当最大咬合位置偏离正确位置约1 mm时，义齿植入后咀嚼行程末期的路径路径发生了变化，但在义齿植入后第7天，路径路径的差异明显减小。4.基牙的牙周状况：颊侧牙龈状况较好，舌侧和近牙侧牙周状况较差。

To clarify the relation between the supporting load of the abutment teeth and the mobility of the removable partial denture,four studies were investigated on the relation between the denture stability and planning factors including occlusal factors, on the relation between the supporting load of periodontal tissues and aging of occlusal form, on the control ability of jaw position connecting with control system of the mastication and on the longitudinal change of periodontal tissues and residual ridge after denture insertion.1.The lateral displacement of the tissue-born denture showed 200-350um in the lateral gliding movement, and showed 350-500um in the lateral gliding movement interposing a rubber seat interocclsally.2.In the fact that the supporting load of the teeth is proportinal to the closely occlusal area, the supporting load increases with the development of attrition, however, the growthing ratio of supporting load may hardly change between the kind of tooth.3.When the lateral inclination of occlusal facet changed, the path way of final phase of chewing stroke adapted soon in the several strokes just after its change. And when the maximally intercuspidated position made about one mm far from correct position, the path way of final phase of chewing stroke changed after insertion of the denture, however, the differences of the path way remarkably decreased at seven days after insertion of it.4.The condition of gingivae of the abutment is good in buccal side, and worse in lingual and proximal side.