Giordano R A, Pelletier L, Campbell S, Pober R
Department of Biomaterials, Boston University, Goldman School of Graduate Dentistry, Mass., USA.
J Prosthet Dent. 1995 May;73(5):411-8. doi: 10.1016/s0022-3913(05)80067-8.
In-Ceram material is a relatively new all-ceramic restorative material with improved properties that require research. The clinical selection of restorative materials is based on a number of parameters such as esthetics, fit, and strength. This study determined the flexural strength of In-Ceram system components and compared the core material with conventional feldspathic ceramics and with Dicor all-ceramic restorative material. Four-point flexural strength values of bend bars of each ceramic were 18.39 +/- 5.00 MPa for In-Ceram sintered alumina, 76.53 +/- 15.23 MPa for In-Ceram infusion glass, and 236.15 +/- 21.94 MPa for In-Ceram infused alumina core. Flexural strength of self-glazed feldspathic porcelain was 69.74 +/- 5.47 MPa, as-cast Dicor ceramic 71.48 +/- 7.17 MPa, and polished Dicor ceramic was 107.78 +/- 8.45 MPa.
In-Ceram材料是一种相对较新的全瓷修复材料，其性能有所改进，需要进行研究。修复材料的临床选择基于许多参数，如美观性、贴合度和强度。本研究测定了In-Ceram系统组件的弯曲强度，并将其核心材料与传统长石质陶瓷以及Dicor全瓷修复材料进行了比较。每种陶瓷弯曲棒的四点弯曲强度值分别为：In-Ceram烧结氧化铝为18.39±5.00兆帕，In-Ceram灌注玻璃为76.53±15.23兆帕，In-Ceram灌注氧化铝核心为236.15±21.94兆帕。自釉长石质瓷的弯曲强度为69.74±5.47兆帕，铸态Dicor陶瓷为71.48±7.17兆帕，抛光后的Dicor陶瓷为107.78±8.45兆帕。
