氢氧化钙表面粘接处理对其压缩强度的影响  

The effects of surface bonding on the compressive strength of different calcium hydroxide products

作　　者：徐莹[1] 郭剑苓 牛玉梅[1] 张琳[1] 潘爽 

机构地区：[1]哈尔滨医科大学附属第一医院口腔牙体牙髓科,150001

出　　处：《实用口腔医学杂志》2017年第6期754-757,共4页Journal of Practical Stomatology

基　　金：黑龙江省教育厅科学技术研究项目(编号:11551190)

摘　　要：目的:比较化学固化氢氧化钙(Dycal)和光固化氢氧化钙(Calcimol LC)表面粘接处理后对其压缩强度的影响。方法:制备实验试件32个,分4组(n=8):A组为Dycal组;B组为Calcimol LC组;C组为粘接处理的Dycal组;D组为粘接处理的Calcimol LC组。采用德国Zwick电子万能试验机对各个试件进行压缩强度检测。结果:A、B、C、D组的平均压缩强度值分别为(110.48±19.9)、(162.6±7.8)、(136.8±17.2)和(223±31.1)MPa。D组压缩强度值高于其他3组(P<0.05),B组的压缩强度值高于A组(P<0.05),其他组间无明显统计学差异。结论:光固化氢氧化钙的压缩强度高于化学固化氢氧化钙,光固化氢氧化钙表面粘接处理后,提高了充填体的压缩强度,而化学固化氢氧化钙表面粘接处理对其压缩强度没有影响。Objective： To explore the effects of surface bonding on compressive strength of chemically-cured（Dycal） and light-cured （ Calcimol LC） calcium hydroxide. Methods： 32 experimental specimens were prepared and divided into 4 groups （ n = 8 ） ： Group A, Dcyal without surface bonding; Group B, Calcimol LC without surface bonding; Group C, Dycal with surface bonding; Group D,Calcimol LC with surface bonding. German Zwick universal electronic testing machine was used to test the compressive strength of the specimens. Results ： The average compressive strength value of group A, B, C and D was （ 110.48± 19.9）, （ 162.6 ± 7.8）, （ 136.8 ± 17. 2） and （223 ± 31.1 ） MPa respectively. Among them, the compressive strength of Group D was the highest （ P 〈 0.05 ）. Compressive strength value of group B was higher than that of group A （P 〈 0.05 ）. No statistical difference was detected between other groups. Con- clusion： The compressive strength of Light-cured Calcium Hydroxide is higher than that of chemically-cured Calcium Hydroxide. Surface bonding treatment can improve the compressive strength of Lightcured Calcium, no apparent effects can be produced on chemically- cured Calcium Hydroxide.

关 键 词：氢氧化钙 光固化 化学固化 压缩强度 

分 类 号：R783.1[医药卫生—口腔医学]