Effects of Alveolar Bone Loss and Post-Core Design on Stress Distribution of Severely Damaged Canine
To investigate the influence of alveolar bone loss and post design on stress distribution of a severely damaged canine.The residual canal dentin wall in the cervical region was standardized at 0.5mm in thickness.Twelve two-dimensional finite element models were created.The models were varied in their alveolar bone loss.The post systems include computer-aided design/computer-aided manufacturing zirconium post,prefabricated glass fiber post,cast stainless steel post,and cast gold post.The numerical models were considered to be restored with an all-ceramic crown.A load of 100N was applied to the crown at an angle of 45 degree on the lingual surface,and Mises stresses were calculated.Finite element analysis revealed that cast stainless steel post system showed the lowest maximum Mises stress in the dentin at 86.46 MPa,while,glass fiber post resulted in the highest stress concentration in the dentin at 174.3 MPa.Stresses were reduced by increasing alveolar height.Loss of alveolar bone loss may lead to an increased risk of failure.
Finite element analysis Post Zirconium
Ya Gao Longquan Shao Banglian Deng Shanyu Zhou Yuanfu Yi Bin Deng Ning Wen
Department of Stomatology,Nanfang Hospital,Southern Medical University,Guangzhou,510515,China Department of Dentistry,The Peoples Hospital of Ankang,Ankang,725000,China Department of the stomatology,The General Hospital of Chinese Peoples Armed Police Forces,Beijing 1 Department of Stomatology,the General Hospital of Chinese PLA,Beijing 100853,China
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
1770-1774
2011-11-04(万方平台首次上网日期,不代表论文的发表时间)