Bramanti Ennio, Cervino Gabriele, Lauritano Floriana, Fiorillo Luca, D'Amico Cesare, Sambataro Sergio, Denaro Deborah, Famà Fausto, Ierardo Gaetano, Polimeni Antonella, Cicciù Marco
Department of Biomedical and Dental Sciences, Morphological and Functional Images, University Hospital of Messina, Via Consolare Valeria, No. 1, 98125 Messina, Italy.
Department of Human Pathology, University of Messina, Messina, Italy.
ScientificWorldJournal. 2017;2017:1029574. doi: 10.1155/2017/1029574. Epub 2017 Apr 3.
The aim of this paper is to underline the mechanical properties of dental single crown prosthodontics materials in order to differentiate the possibility of using each material for typical clinical condition and masticatory load. Objective of the investigation is to highlight the stress distribution over different common dental crowns by using computer-aided design software and a three-dimensional virtual model. By using engineering systems of analyses like FEM and Von Mises investigations it has been highlighted the strength over simulated lower first premolar crowns made by chrome cobalt alloy, golden alloy, dental resin, and zirconia. The prosthodontics crown models have been created and put on simulated chewing stresses. The three-dimensional models were subjected to axial and oblique forces and both guaranteed expected results over simulated masticatory cycle. Dental resin presented the low value of fracture while high values have been recorded for the metal alloy and zirconia. Clinicians should choose the better prosthetic solution for the teeth they want to restore and replace. Both prosthetic dental crowns offer long-term success if applied following the manufacture guide limitations and suggestions.
本文旨在强调口腔单冠修复材料的力学性能，以便区分在典型临床情况和咀嚼负荷下使用每种材料的可能性。本研究的目的是通过使用计算机辅助设计软件和三维虚拟模型，突出不同常见牙冠上的应力分布。通过使用有限元法（FEM）和冯·米塞斯（Von Mises）等工程分析系统，已突出显示了由铬钴合金、金合金、牙科树脂和氧化锆制成的模拟下颌第一前磨牙冠的强度。已创建口腔修复冠模型并施加模拟咀嚼应力。三维模型承受轴向和斜向力，并且在模拟咀嚼周期中均保证了预期结果。牙科树脂的断裂值较低，而金属合金和氧化锆的记录值较高。临床医生应为他们想要修复和替换的牙齿选择更好的修复解决方案。如果按照制造指南的限制和建议应用，两种假牙冠都能提供长期成功。
