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连接杆是可摘局部义齿的一个组成部份,它的主要功能是将支架的左右组成部份连成整体,起到分散(牙合)力、稳定义齿以及提供间接固位的作用。一、连接杆的基本要求1.具有一定的刚度、不可有弹性,提供必要的支持。如果连接杆出现弹性变形,会使(牙合)力集中到个别牙齿或牙槽嵴上,损伤基牙的牙周支持组织,引起骨性牙槽嵴吸收。2.避免撞击游离龈缘。连接杆绝对不可终止在龈缘组织上,否则血运丰富的龈缘易受压力的损伤。上颌连接杆至少离龈缘5到6mm,下颌连接杆离龈缘在3mm 以上。如果不可能取得这个间隙,连接杆必须扩展到
The connecting rod is an integral part of the removable partial denture and its main function is to integrate the left and right components of the stent as a whole to provide decentralized (occlusal) force, stabilize the denture and provide indirect retention. First, the basic requirements of the connecting rod 1 has a certain stiffness, not flexible, to provide the necessary support. If the connecting rod elastic deformation, will (occlusal) force concentrated to individual teeth or alveolar ridges, damage to the periodontal support tissues, causing the absorption of bony alveolar ridge. Avoid hitting free gingival margin. The connecting rod must not terminate at the gingival margin, otherwise the gingival margin is vulnerable to stress. The upper connecting rod is at least 5 to 6 mm from the gingival margin and the lower connecting rod is 3 mm above the gingival margin. If it is not possible to achieve this clearance, the connecting rod must be extended to