2种粘结剂及粘结方法对CAD/CAM全瓷冠抗折强度的影响

›› 2014, Vol. 34 ›› Issue (2): 114-117.

2种粘结剂及粘结方法对CAD/CAM全瓷冠抗折强度的影响

洪凌斐¹,张丽霞²,乐群³,蒋丽萍²

1. 上海交通大学医学院附属新华医院
2. 上海交通大学附属新华医院口腔科
3. 上海交通大学医学院附属新华医院口腔科

收稿日期:2012-10-11 修回日期:2012-12-20 出版日期:2014-02-28 发布日期:2014-03-05
通讯作者: 洪凌斐 E-mail:honglingfei@126.com
基金资助:
上海交通大学“医工(理)交叉研究基金”

Effect of 2 kinds of luting agents and bonding methods on the breaking strength in CAD/CAM allceramic crowns

Received:2012-10-11 Revised:2012-12-20 Online:2014-02-28 Published:2014-03-05

摘要/Abstract

摘要： 目的研究不同粘结方法及冷热循环对Cerec全瓷冠粘结后抗折强度的影响。方法选择离体前磨牙80颗，进行Cerec全瓷冠预备及制作。随机分为1~4组，每组20颗，分别使用Variolink N树脂粘结剂+硅烷偶联剂粘结、Variolink N树脂粘结剂粘结、Bisco Choice TM 2树脂粘结剂＋硅烷偶联剂粘结、Bisco Choice TM 2树脂粘结剂粘结；每组再分为A、B小组，分别不进行和进行冷热循环。8组试件均用万能力学实验机测试其全瓷冠最大抗折裂强度，观察所有标本粘结破坏形式；进行统计分析。结果使用Variolink N树脂粘结剂+硅烷偶联剂组粘结的Cerec全瓷冠抗折裂强度最高；全瓷冠抗折强度A组(非冷热循环)高于B组。差异有统计学意义(P<0.05)。结论双重固化树脂粘结系统是牙科长石质陶瓷粘结的理想选择，可以获得较高的抗折裂强度。冷热循环降低Cerec全瓷冠抗折裂强度。

关键词: 粘结剂, 全瓷冠, 抗折裂强度, 冷热循环, Luting agent, all-ceramic crowns, breaking strength, thermal cycling

Abstract: Objective Study of different bonding methods and thermal cycle on breaking strength of Cerec allceramic crowns after bonding. Methods 80 in vitro premolars were selected for Cerec allceramic crown preparation and were randomly divided into 4 groups（n=20） according to their luting agent:Group 1:VariolinkN resin binder and silane coupling agent; Group 2:VariolinkN resin based luting material; Group 3:Bisco Choice TM2 resin adhesive and silane coupling agent; Group 4:Bisco ChoiceTM 2 resin adhesive.Each group was divided into A(without thermal cycling) and B(with thermal cycling) subgroups.The maximum breaking strength of the allceramic crowns was tested by the universal mechanical testing machine,the bond failure forms were recorded,and statistical analysis was done thereafter. Results Group 1,using the Variolink N resin based luting material and silane coupling agent,got the highest fracture strength of Cerec allceramic crowns among all the luting agents.Non thermal cycling subgroup was higher than that of thermal cycling subgroup in flexural strength of allceramic crowns.The difference was statistically significant (P<0.05). Conclusions The dualcured resin based luting cement system is the ideal choice for dental feldspathic ceramic bonding,and can get a higher breaking strength.The breaking strength of Cerec allceramic crowns can be reduced by thermal cycling.

中图分类号:

R783.1

洪凌斐张丽霞乐群蒋丽萍. 2种粘结剂及粘结方法对CAD/CAM全瓷冠抗折强度的影响[J]. 口腔医学, 2014, 34(2): 114-117.

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