Singh S Vijay, Bhat Manohar, Gupta Saurabh, Sharma Deepak, Satija Harsha, Sharma Sumeet
Department of Conservative Dentistry and Endodontics, D.A.V (c) Dental College and Hospital, Yamunanagar, Haryana, India.
Department of Conservative Dentistry and Endodontics, Jaipur Dental College and Hospital, Jaipur, Rajasthan, India.
Eur J Dent. 2015 Jul-Sep;9(3):428-432. doi: 10.4103/1305-7456.163228.
A three-dimensional (3D) finite element analysis (FEA) on the stress distribution of endodontically treated teeth with titanium alloy post and carbon fiber post with different alveolar bone height.
The 3D model was fabricated using software to represent an endodontically treated mandibular second premolar with post and restored with a full ceramic crown restoration, which was then analyzed using FEA using FEA ANSYS Workbench V13.0 (ANSYS Inc., Canonsburg, Pennsylvania, U.S.A) software.
The FEA showed the maximum stresses of 137.43 Mpa in dentin with alveolar bone height of 4 mm when the titanium post was used, 138.48 Mpa when carbon fiber post was used as compared to 105.91 Mpa in the model with alveolar bone height of 2 mm from the cement enamel junction (CEJ) when the titanium post was used and 107.37 Mpa when the carbon fiber post was used.
Stress was observed more in alveolar bone height level of 4 mm from CEJ than 2 mm from CEJ. Stresses in the dentin were almost similar when the carbon fiber post was compared to titanium post. However, stresses in the post and the cement were much higher when titanium post was used as compared to carbon fiber post.
对不同牙槽骨高度下使用钛合金桩和碳纤维桩进行根管治疗的牙齿应力分布进行三维（3D）有限元分析（FEA）。
使用软件制作3D模型，以代表一颗进行了根管治疗的下颌第二前磨牙，带有桩并进行全瓷冠修复，然后使用FEA ANSYS Workbench V13.0（美国宾夕法尼亚州卡农斯堡ANSYS公司）软件进行有限元分析。
有限元分析显示，当使用钛桩时，牙槽骨高度为4mm的牙本质中的最大应力为137.43MPa，使用碳纤维桩时为138.48MPa；相比之下，当使用钛桩时，距牙骨质釉质界（CEJ）牙槽骨高度为2mm的模型中最大应力为105.91MPa，使用碳纤维桩时为107.37MPa。
观察到距CEJ 4mm牙槽骨高度水平的应力比距CEJ 2mm时更大。与钛桩相比，使用碳纤维桩时牙本质中的应力几乎相似。然而，与碳纤维桩相比，使用钛桩时桩和粘结剂中的应力要高得多。
