Metal-ceramic bond strength of Co-Cr alloy processed by selective laser melting
10.3760/cma.j.issn.1002-0098.2013.03.011
- VernacularTitle:选区激光熔化钴铬合金金-瓷结合强度初探
- Author:
Jie LIU
1
;
Yang LIU
;
Rong SUN
;
De-Song ZHAN
;
Yan-Yan WANG
Author Information
1. 中国医科大学口腔医学院修复科·辽宁省口腔医学研究所
- Keywords:
Compressive strength;
Chromium alloys;
Selective laser melting
- From:
Chinese Journal of Stomatology
2013;48(3):170-172
- CountryChina
- Language:Chinese
-
Abstract:
Objective To eveluate the metal-ceramic bond strength of a selective laser melting Co-Cr alloy.Methods Twelve Co-Cr metal bars were prepared according to the ISO 9693 standard with Vita porcelain fused onto the centre of each bar.Then the sample bars were devided into two groups of six each.The control group was made by traditional cast process(cast group),and the experimental group was processed by selective laser melting (SLM) technology (SLM group).Metal-ceramic bonding strength and fracture mode were assessed using three-point bending test.Fracture mode analysis was determined by scanning electronic microscope/energy dispersive spectroscopy.Student's t-test was used to analyze the data in SPSS 13.0.Results The metal-ceramic bond strength value of the cast group was (33.45 ±2.34) MPa,and that of the SLM group was (31.62 ± 2.34) MPa (t =0.79,P ＞ 0.05).A mixed fracture mode on the debonding interface of all specimens was observed,while little porcelain was reserved.Conclusions The metal-ceramic system processed by SLM exhibited a bonding strength that satisfies the requirement of clinical application.
