烤瓷熔附金属修复材料实验力学与计算力学的比较(英文)  

Comparison of experimental and computing mechanics for repair materials of porcelain fused to metal

作　　者：陈新民[1] 姚蔚[1] 田保[1] 朱庆党[1] 

机构地区：[1]四川大学华西口腔医学院口腔修复科,四川省成都市610041

出　　处：《中国临床康复》2006年第41期189-191,共3页Chinese Journal of Clinical Rehabilitation

摘　　要：背景:烤瓷熔附金属的物理性质同其各组分的性质明显不同又受到其影响,大多复合材料的力学性质可用混合律来预测,但烤瓷熔附金属力学性质的影响因素非常多,预测的结果明显偏大,因此有必要将其力学性质与材料力学的理论分析通过数学模型联系起来,以指导其使用。目的:探讨对烤瓷熔附金属修复材料进行力学分析的实验与计算方法,分析其相关程度和内在联系。设计:分别利用三点弯曲实验,参照复合材料混合律测试并计算材料的强度和模量,将实验与计算所得结果进行比较。单位:四川大学华西口腔医学院口腔修复科。材料:制作不同金瓷比,外形为26mm×4mm×1.5mm的烤瓷熔附金属试件15个,分5组,每组3个。方法:采用三点弯曲实验测量烤瓷熔附金属弯曲强度及弹性模量,观察其变化规律,并与理论计算值比较,讨论其相关性。主要观察指标:烤瓷熔附金属材料实验及理论计算结果及二者的比较。结果:实验测量结果与理论计算结果有明显相关性,可以通过修正的理论公式来预测烤瓷熔附金属的力学性质。结论:烤瓷熔附金属各组分的几何形态参数和力学参数与其总体力学性质有规律关系,可以用通过校正的理论公式进行预测和改进。BACKGROUND： The physical property of porcelain fused to metal （PFM） differs from those of its constituents, which make impacts on PFM. and the mechanical property of most conlposites can be estimated with mixture fide. However, there are various factors influencing the mechanical property of PFM and great differences found in the estimations, tiros it is necessary to combine the theoretical analysis of mechanical property and mechanics of materials by mathematical models, and provide guidances for PFM＇s application. OBJECTIVE： To explore the experiment and computing lnethods of mechanical analysis on PFM repair materials, and analyze its conelativity and internal relation. DESIGN： Three-point bending experiment and mixture rule of the composites were applied to measure and calculate the intensity and modulus of materials, and then the experimental results and computations were compared. SETTING： Repair Department of Stomatology, West China Stomatological College. MATERIALS： According to the different metal-porcelain ratios, 15 PFM test pieces of 26 mm×4 mm×1.5 mm were divided into 5 groups, with 3 in each. METHODS： Three-point bending experiment was used to detect the bending level and elastic modulus of PFM, whose changing rule was observed, and then was compared with theoretical computed value as well as study the correlation. MAIN OUTCOME MEASURES： PFM experimental result, theoretical computation and the comparison of the two. RESULTS： There were obvious conelations between the experimental measurement and theoretical results, which indicated that the mechanical property of PFM could be predicted by the revised formula. CONCLUSION： The mechanical property of PFM has regular relations with the geometrical morphous parameter and mechanical paranleter of PFM constituents, and can be predicted and improved by revised theoretical formula.

关 键 词：金属烤瓷修复体 牙应力分析 力学 

分 类 号：R318[医药卫生—生物医学工程]