کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10612553 | 986568 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
3D FEA of cemented steel, glass and carbon posts in a maxillary incisor
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
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چکیده انگلیسی
Results and significance. The more stiff systems (steel and carbon posts) have been evaluated to work against the natural function of the tooth. Maximum Von Mises equivalent stress values ranging from 7.5 (steel) to 5.4 and 3.6Â MPa (respectively, for carbon posts fixed with high and low cement moduli) and to 2.2Â MPa (either for glass posts fixed with high and low cement moduli) have been observed under a static masticatory load of 10Â N. A very stiff post works against the natural function of the tooth creating zones of tension and shear both in the dentine and at the interfaces of the luting cement and the post. Stresses in static loading do not reach material (dentine and cement) failure limits, however, they significantly differ leading to different abilities of the restored systems to sustain fatigue loading. The influence of the cement layer elasticity in redistributing the stresses has been observed to be less relevant as the post flexibility is increased.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dental Materials - Volume 21, Issue 8, August 2005, Pages 709-715
Journal: Dental Materials - Volume 21, Issue 8, August 2005, Pages 709-715
نویسندگان
Alessandro Lanza, Raffaella Aversa, Sandro Rengo, Davide Apicella, Antonio Apicella,