White J T
J Prosthet Dent. 1978 Aug;40(2):143-51. doi: 10.1016/0022-3913(78)90006-9.
The following conclusions are based on the conditions set forth in this investigation and apply to forces acting through a vertical direction of application only: 1. The unilateral removable partial denture produced no more stress than the bilateral removable partial denture. 2. The fully active Dalbo removable partial denture resulted in the greatest stressbreaking action. 3. The rigid Dalbo removable partial denture resulted in the least ridge displacement. 4. The rigid Dalbo removable partial denture resulted in the greatest stress concentrations in the distal abutment. 5. None of the attachments tested resulted in a distribution of the stresses along the edentulous ridge. 6. The use of two abutments (double abutments) resulted in greater stress concentrations in the distal abutment than the use of single abutments. 7. Forces in the single abutment were resisted along the long axis of the root. 8. Forces in the double abutments were resisted along the long axis of the distal abutment.
以下结论基于本研究设定的条件，且仅适用于通过垂直作用方向施加的力：1. 单侧可摘局部义齿产生的应力不超过双侧可摘局部义齿。2. 全活性Dalbo可摘局部义齿产生的应力破坏作用最大。3. 刚性Dalbo可摘局部义齿导致的牙槽嵴位移最小。4. 刚性Dalbo可摘局部义齿在远中基牙处产生的应力集中最大。5. 所测试的附件均未导致应力沿无牙区牙槽嵴分布。6. 使用两个基牙（双基牙）比使用单个基牙在远中基牙处产生更大的应力集中。7. 单个基牙中的力沿牙根长轴抵抗。8. 双基牙中的力沿远中基牙的长轴抵抗。
