牙科硅藻土基底瓷与饰面瓷的结合机制分析

上海口腔医学 ›› 2015, Vol. 24 ›› Issue (2): 177-181.

牙科硅藻土基底瓷与饰面瓷的结合机制分析

陆小丽¹,高美琴¹,程玉叶¹,章非敏²

1.南通市口腔医院,江苏南通 226000;
2.南京医科大学口腔医学研究所,江苏南京 210029

收稿日期:2014-12-01 出版日期:2015-04-20 发布日期:2015-07-24
通讯作者: 章非敏,Tel:025-85031831,Email:fmzhang@njmu.edu.cn
作者简介:陆小丽（1984-）,女,硕士,住院医师,Email:luxiaoli9800@163.com
基金资助:
南通市科技项目（HS2013010）

Preliminary study of bonding strength between diatomite-based dental ceramic and veneering porcelains

LU Xiao-li¹,GAO Mei-qin¹,CHENG Yu-ye¹,ZHANG Fei-min²

1.Nantong Stomatological Hospital. Nantong 226000;
2.Institute of Stomatology, Nanjing Medical University. Nanjing 210029, Jiangsu Province, China

Received:2014-12-01 Online:2015-04-20 Published:2015-07-24
Supported by:
Science and Technology Projects of Nantong City（HS2013010）

摘要/Abstract

摘要： 目的检测硅藻土基纳米复相基底瓷与不同饰面瓷的结合强度,观察结合界面的微观结构并分析元素分布,探讨结合界面的匹配性。方法采用热膨胀仪检测硅藻土纳米复相基底瓷的热膨胀系数,在基底瓷上分别烧结氧化铝饰面瓷（A组）、钛瓷饰面瓷（B组）及E-max饰面瓷（C组）,检测基底瓷与饰面瓷的剪切强度,扫描电镜（SEM）及能谱仪（EDS）观察结合界面的显微结构及元素分布。采用SPSS 17.0软件包对数据进行单因素方差分析。结果硅藻土基纳米复相基底瓷在25~500℃之间的热膨胀系数值为8.85×10^-6 K^-1。硅藻土基底瓷与C组剪切强度最佳,C组与A组间及C组与B组之间相比有显著差异（P<0.05）。SEM及EDS发现,C组结合界面紧密,界线不清晰,无明显间隙,界面两侧元素存在渗透。结论硅藻土基纳米复相基底瓷与E-max饰面瓷具有较好的剪切强度,两者间匹配性较好。

关键词: 硅藻土, 饰面瓷, 匹配性, 结合强度

Abstract: PURPOSE: In order to choose the best veneering porcelain for diatomite-based dental ceramic substrate, the bonding strength between diatomite-based dental ceramics and veneering porcelains was measured, and the microstructure and elements distribution of interface were analyzed. METHODS: The coefficient of thermal expansion (CTE) of diatomite-based dental ceramics was detected by dilatometry. Three veneering porcelain materials were selected with the best CTE matching including alumina veneering porcelain (group A), titanium porcelain veneering porcelain (group B), and E-max veneering porcelain (group C). Shear bonding strength was detected. SEM and EDS were used to observe the interface microstructure and element distribution. Statistical analysis was performed using SPSS 17.0 software package. RESULTS: The CTE of diatomite-based dental ceramics at 25-500℃ was 8.85×10^-6K^-1. The diatomite-based substrate ceramics combined best with group C. Shear bonding strength between group A and C and group B and C both showed significant differences(P<0.05). SEM and EDS showed that the interface of group C sintered tightly and elements permeated on both sides of the interface. CONCLUSIONS: The diatomite-based substrate ceramics combines better with E-max porcelain veneer.

Key words: Diatomite, Veneering porcelain, Matching, Shear bonding strength

中图分类号:

R783.3

陆小丽,高美琴,程玉叶,章非敏. 牙科硅藻土基底瓷与饰面瓷的结合机制分析[J]. 上海口腔医学, 2015, 24(2): 177-181.

LU Xiao-li,GAO Mei-qin,CHENG Yu-ye,ZHANG Fei-min. Preliminary study of bonding strength between diatomite-based dental ceramic and veneering porcelains[J]. Shanghai Journal of Stomatology, 2015, 24(2): 177-181.

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