Firtell D N, Grisius R J
J Prosthet Dent. 1980 Feb;43(2):212-7. doi: 10.1016/0022-3913(80)90189-4.
An in vitro study was performed to measure the influence of a simulated obturator on the amount of force required to dislodge a simulated unilateral removable partial denture with various clasp designs. The presence of an obturator reduces the retentive capability of a removable partial denture. Lingual retention appeared to provide more resistance to displacement than buccal retention. Infrabulge clasp designs appeared to be more retentive than suprabulge clasp designs.
进行了一项体外研究，以测量模拟闭孔器对采用各种卡环设计的模拟单侧可摘局部义齿脱位所需力量的影响。闭孔器的存在会降低可摘局部义齿的固位能力。舌侧固位似乎比颊侧固位对移位提供更多阻力。龈下卡环设计似乎比龈上卡环设计更具固位力。
