A novel polymer infiltrated ceramic dental material
A novel polymer infiltrated ceramic dental material
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DOI：
10.1016/j.dental.2011.02.002
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发表时间：
2011-06-01
期刊：
影响因子：
5
通讯作者：
Swain, Michael
中科院分区：
文献类型：
--
作者：
He, Li-Hong;Swain, Michael
目标.为了评估原型多孔陶瓷互穿聚合物-陶瓷材料的机械行为，所述原型多孔陶瓷互穿聚合物-陶瓷材料含有15-20%的聚合物。样品制备后，用纳米压痕系统测量了样品的弹性模量、硬度、应力-应变关系和压痕蠕变响应。断裂韧性的单边缺口梁（SENB）的方法进行了测量。采用扫描电镜观察断裂面，分析断裂机理。聚合物渗透陶瓷材料的弹性模量、硬度和断裂韧性值分别为30.14 GPa、2.59 GPa和1.72 MPam（1/2）。该材料的弹性模量和硬度显示出显著的压痕尺寸效应，并且具有与人牙釉质相似的压痕蠕变行为。预渗透多孔陶瓷的密度和加工压力等制造工艺会影响材料的最终性能。这种渗透陶瓷材料有望成为牙科CAD/CAM家族的新成员。(C)2011年牙科材料学院。由爱思唯尔有限公司出版。保留所有权利。
Objectives. To evaluate the mechanical behavior of a prototype porous ceramic interpenetrating polymer-ceramic material containing 15-20% polymer.Methods. After sample preparation, elastic modulus, hardness, stress-strain relationship and indentation creep response were measured by a nanoindentation system. Fracture toughness was measured by the single-edge-notched beam (SENB) method. SEM was employed to observe the fractured surface and analyze the fracture mechanisms.Results. The polymer infiltrated ceramic material has elastic modulus, hardness, and fracture toughness values of 30.14 GPa, 2.59 GPa, and 1.72 MPam(1/2), respectively. The material illustrates a significant indentation size effect for elastic modulus and hardness, and has similar indentation creep behavior to human enamel. Manufacturing procedures such as the density of pre-infiltrated porous ceramic and processing pressure influence the final properties of the material.Significance. This polymer infiltrated ceramic material is anticipated to become a new member of the dental CAD/CAM family. (C) 2011 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.