Maxfield J B, Nicholls J I, Smith D E
J Prosthet Dent. 1979 Feb;41(2):134-42. doi: 10.1016/0022-3913(79)90295-6.
Despite the limited number of patients in the study, the following conclusions may be made regarding the magnitude and direction of forces transmitted to abutment teeth of extension-base removable partial dentures. 1. A technique was presented for using strain gauges to determine the magnitude and direction of forces transmitted to abutment teeth of removable partial dentures. 2. There are variations in force magnitude with a patient and between patients from chewing cycle to chewing cycle. 3. The transmitted forces vary when different removable partial denture designs are used. 4. Improving adaptation of the extension bases to the residual ridge is an excellent means for providing maximum support, increasing patient comfort, and decreasing forces to abutment teeth. 5. Extension bases apply mesially directed forces to abutment teeth during mastication. 6. Further research is needed to elucidate the effects of the various philosophies of removable partial denture design.
尽管该研究中的患者数量有限，但关于传递到伸展基托可摘局部义齿基牙上的力的大小和方向，仍可得出以下结论。1. 提出了一种使用应变片来确定传递到可摘局部义齿基牙上的力的大小和方向的技术。2. 患者自身以及不同患者在咀嚼周期之间，力的大小存在差异。3. 使用不同的可摘局部义齿设计时，传递的力有所不同。4. 改善伸展基托与残余牙槽嵴的贴合度，是提供最大支持、提高患者舒适度以及减少基牙受力的极佳方法。5. 咀嚼过程中，伸展基托会向基牙施加近中方向的力。6. 需要进一步研究以阐明可摘局部义齿不同设计理念的影响。
