2种脱敏剂对不同水门汀粘接效果的影响

doi:10.13701/j.cnki.kqyxyj.2018.11.021

口腔医学研究 ›› 2018, Vol. 34 ›› Issue (11): 1235-1239.DOI: 10.13701/j.cnki.kqyxyj.2018.11.021

2种脱敏剂对不同水门汀粘接效果的影响

古萌琴, 谭裕洁, 李汪阳, 郭玲^*

西南医科大学附属口腔医院修复科四川泸州 646000

收稿日期:2018-05-18 出版日期:2018-11-28 发布日期:2018-11-23
通讯作者: 郭玲,E-mail:gl2005202@ foxmail.com
作者简介:古萌琴(1993~),女,四川乐山人,硕士在读,主要从事口腔种植修复的研究工作。
基金资助:
四川省医学会课题(编号:S15037);四川省教育厅科研项目(编号:16ZA0813);四川省医学科研课题计划项目(编号:S16078)

Effect of Two Desensitizers on Bond Strength of Different Cements to Dentine

GU Meng-qin, TAN Yu-jie, LI Wang-yang, GUO Ling^*

Department of Prosthodontics, Hospital of Stomatology Southwest Medical University, Luzhou 646000, China.

Received:2018-05-18 Online:2018-11-28 Published:2018-11-23

摘要/Abstract

摘要： 目的:研究冷热循环后2种脱敏剂对3种水门汀材料粘接剪切强度的影响。方法:将96颗离体牙分成3组:Duraphat、Prime&Bond NT和对照组,每组选取2个试件用扫描电镜(SEM)观察牙本质小管形貌。剩余试件分成3个亚组:RelyX U200、玻璃离子水门汀(GIC)、树脂加强型玻璃离子水门汀(RMGIC),所有试件37 ℃水浴24 h后,每组随机抽取一半试件冷热循环10000次(5 ℃/55 ℃),测量剪切强度,统计分析结果。结果:Duraphat、Prime&Bond NT可以不同程度的封闭牙本质小管; Duraphat组剪切强度低于对照组(P<0.05),Prime&Bond NT+ RelyX U200组高于对照组(P<0.05),Prime&Bond NT+ GIC组低于对照组(P<0.05),Prime&Bond NT+RMGIC组与对照组无差别;冷热循环后所有试件剪切强度均降低(P<0.05),Prime&Bond NT+ RelyX U200组剪切强度值最高。结论:两种脱敏剂对3种水门汀粘接强度的影响不同, Prime&Bond NT能提高RelyX U200的粘接强度。

关键词: 脱敏剂, 水门汀, 剪切强度

Abstract: Objective: To evaluate the effect of two desensitizers on shear bond strength (SBS) of dentine to resin composite of three cements after thermal-cycling. Methods: 96 premolars were divided into three groups: Duraphat, Prime&Bond NT, and control groups. Two premolars from each group were selected for scanning electron microscopy (SEM), and the remnant were assigned to three subgroups (n=10): RelyX U200, glass ionomer cement (GIC), and resin modified glass ionomer cement (RMGIC/RelyX Luting2 Cement). After 24 h storage in 37℃ water bath and thermal-cycling (5℃/ 55℃), the SBS of all groups was tested by universal testing machine. Results: Two desensitizers occluded the dentine tubules at varying degrees. Duraphat reduced the SBS significantly (P<0.05); the Prime&Bond NT + RelyX U200 improved the retentive strength (P<0.05), however, the Prime&Bond NT + GIC reduced the SBS (P<0.05), and there was no significant difference in the Prime&Bond NT + RMGIC group (P>0.05). After thermal-cycling for 24 h, the SBS values of all groups were reduced (P<0.05), and the maximum value was Prime&Bond NT + RelyX U200 group. Conclusion: Two desensitizers have different effects on three cements, and the Prime&Bond NT can enhance the SBS of RelyX U200.

Key words: Desensitizer, Cement, Shear bond strength

古萌琴, 谭裕洁, 李汪阳, 郭玲. 2种脱敏剂对不同水门汀粘接效果的影响[J]. 口腔医学研究, 2018, 34(11): 1235-1239.

GU Meng-qin, TAN Yu-jie, LI Wang-yang, GUO Ling. Effect of Two Desensitizers on Bond Strength of Different Cements to Dentine[J]. Journal of Oral Science Research, 2018, 34(11): 1235-1239.

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2种脱敏剂对不同水门汀粘接效果的影响

Effect of Two Desensitizers on Bond Strength of Different Cements to Dentine

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