| 1. | It helps to analysize the stress and strain condition of periodontal tissues in order to improve the treatment system
准确认识牙周膜的弹性模量可以分析牙周组织的应力与应变关系,完善矫治系统。 |
| 2. | Results five deeply embedded teeth with normal pulp and periodontal tissue were migrated to the normal position
结果5例埋伏牙均移动至正常位置，附件无脱落，埋伏牙萌出后牙髓活力、牙周组织正常。 |
| 3. | Methods : the stress distribution in periodontal tissue was analyzed after thetilted abutment received fixed prosthesis using three - dimensional strain rosette
方法：应用三维应变花技术对不同倾斜角度基牙进行固定修复后，对其牙周组织受力进行分析。 |
| 4. | Objective : to study the relationship between angle of tilted abutment and stress distribution of periodontal tissue , and todetermine the angle limit for fixed prosthesis
目的：探讨基牙牙周组织受力与其倾斜角度的关系，找出能够进行固定修复的基牙倾斜角度的极限值。 |
| 5. | Purpose : to study the stress of the abutment and its periodontal tissue with different designs of retainer ( type of retainer , place ) in the same situation of dentural defect
摘要目的：探讨在相同的缺牙病例中，不同的固位体设计（固位体的类型、放置的位置）对牙颌组织的力学影响。 |
| 6. | Methods : based on the 3 - d fea database of rpd , the stress state of the abutment and its periodontal tissue was analyzed to choose the optimal retainer with the same situation of dentural defect
方法：对个别牙缺失的病例设计不同固位体，在可摘局部义齿三维有限元模型库的基础上组建实验模型，通过三维有限元方法，分析牙周组织在不同情况下所受的应力大小。 |
| 7. | Results : with three different retainer designs , the retainer on the second premolar and the first molar exerted the smallest stress on the abutment and its periodontal tissue , while the retainer on the first premolar and the first molar had the largest stress
结果：在3种不同的固位体设计方式中，固位体放置在第二前磨牙与第一磨牙之间时，基牙及牙周组织受力最小；固位体放置在第一前磨牙与第一磨牙上，基牙与牙周组织受力最大。 |
