CAJ | 학술논문

目的：比较球帽附着体和栓道式附着体义齿支持组织的Von Mises等效应力分布。方法分别建立基牙牙周组织正常、吸收1/4、吸收1/3、吸收1/2的两种附着体义齿的三维有限元模型，采用垂直向加载力300N，模拟单侧后牙咬合状态，分析支持组织的Von Mises等效应力。结果基牙牙周组织不同状况下，栓道式附着体义齿的基牙和牙周膜最大Von Mises等效应力值小于球帽附着体义齿，缺牙区牙槽嵴最大Von Mises等效应力值大于球帽附着体义齿，但其分布相对较均匀。结论基牙不同牙周状况下，栓道式附着体义齿与球帽附着体义齿相比，其支持组织应力分布相对较均匀，应力集中范围小，可见栓道式附着体舌侧对抗臂的设计可以使支持组织受力更均匀，更有利于基牙健康。
목적：비교구모부착체화전도식부착체의치지지조직적Von Mises등효응력분포。방법분별건립기아아주조직정상、흡수1/4、흡수1/3、흡수1/2적량충부착체의치적삼유유한원모형，채용수직향가재력300N，모의단측후아교합상태，분석지지조직적Von Mises등효응력。결과기아아주조직불동상황하，전도식부착체의치적기아화아주막최대Von Mises등효응력치소우구모부착체의치，결아구아조척최대Von Mises등효응력치대우구모부착체의치，단기분포상대교균균。결론기아불동아주상황하，전도식부착체의치여구모부착체의치상비，기지지조직응력분포상대교균균，응력집중범위소，가견전도식부착체설측대항비적설계가이사지지조직수력경균균，경유리우기아건강。
Objective To compare Von Mises equivalent stress distribution on the supporting tissue between ball-cap attachment denture and key-key way attachment denture. Methods The 3-dimensional finite element models of 2 attachment dentures with peri-odontal tissue normal, 1/4 absorbed, 1/3 absorbed and 1/2 absorbed, respectively;a vertical loading force of 300N was given and unilat-eral posterior occlusion was simulated;Von Mises equivalent stress distribution on the supporting tissue was analyzed Results Under different conditions of periodontal tissues, the maximum Von Mises equivalent stress values of abutment teeth and periodontal ligament of key-key way attachment dentures were smaller than those of ball-cap attachment dentures while the maximum Von Mises equivalent stress value of the alveolar ridge were greater than that of ball-cap attachment denture with a mean stress distributions. Conclusions The stress on the supporting tissue of key-key way attachment denture is more evenly distributed within a smaller range than that of ball-cap attachment denture and it is more fit for the health of abutment teeth.