Er:YAG激光处理对牙本质与树脂粘结强度的影响

doi:10.13701/j.cnki.kqyxyj.2017.06.013

口腔医学研究 ›› 2017, Vol. 33 ›› Issue (6): 629-632.DOI: 10.13701/j.cnki.kqyxyj.2017.06.013

Er:YAG激光处理对牙本质与树脂粘结强度的影响

宋丹丹^1,2, 邱大鹏², 方慧敏¹, 俞青^1*

1. 南京大学医学院附属口腔医院,南京市口腔医院修复科江苏南京 210008;
2. 盐城市口腔医院江苏盐城 224000

收稿日期:2016-11-13 出版日期:2017-06-20 发布日期:2017-06-26
通讯作者: 俞青,E-mail: kqmike@163.com
作者简介:宋丹丹(1984~ ),女,江苏盐城人,硕士,主要从事临床修复学工作。
基金资助:
南京航空航天大学国家自然基金协作费(编号:2014-27-280)

Effect of Er:YAG Laser Treatment on Dentin Surface and Bonding Strength.

SONG Dan-dan^1,2, QIU Da-peng², FANG Hui-min¹, YU Qing¹.

1. Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China;
2. Yancheng Stomatological Hospital, Yacheng 224000, China.

Received:2016-11-13 Online:2017-06-20 Published:2017-06-26

摘要/Abstract

摘要： 目的:探讨Er:YAG激光处理对牙本质表面性能及树脂粘结强度的影响。方法:选取30颗无龋坏、无修复体的人离体磨牙,用高速涡轮手机在流水冲洗下磨除釉质层。每个牙冠以髓腔为中心沿近远中向切开成颊/舌两部分,最终选取50个样件,按不同的表面处理方法随机分为5组(A~E组),每组10个样件。每组2个样件扫描电镜观察,其余8个样件分别在处理后的牙本质表面粘结光固化复合树脂,进行剪切强度测试。结果:C组最高,为(7.11±1.73) MPa,E组次之,E组与A、C、D组无统计学差异, B组较低,其中B组与C、D、E组均有统计学差异。扫描电镜观察:酸蚀组可见部分牙本质小管口开放,管径未增大;管周牙本质与管间牙本质界限不明显。激光+酸蚀组可见牙本质表面清沽,牙本质小管开放,周围白晕环绕。激光组可见牙本质表面清洁、粗糙,无玷污层,呈片状、蜂窝状外观,管周牙本质与管间牙本质界限清晰。结论:Er:YAG激光处理能增加牙本质与树脂的剪切粘结强度,但是合适的能量参数有待进一步研究。

关键词: Er:YAG激光, 酸蚀, 牙本质, 剪切粘结强度

Abstract: Objective: To investigate the influence of Er:YAG laser treatment on the dentin surface and bonding strength. Methods: Thirty fresh extracted molars without dental caries or restorations were collected, and enamel layer was removed with a high speed bur under flowing water. Fifty specimens were obtained by mesiodistal sectioning of each tooth and were randomly divided into 5 groups (Group A-E). Two specimens were randomly chosen from each group and were observed by scanning electron microscope. The other eight specimens in each group were bonded with light-cured composite resin and the shear bond strength was tested. Results: The highest shear bond strength was 7.11±1.73Mpa in Group C. Group E was lower than Group C. There was no significant difference between Group E and Group A, C, D. The bond strengths of Group B was the lowest, however there was no significant difference between Group B and Group C, D, E. Scanning electron microscopy showed that after acid etching, part of the dentinal tubules were open while the diameter did not increase. The boundary between the periodontal dentin and the intertubular dentine was not clear. After laser treatment and acid etching, dentin surface was clean and dentinal tubules were open. After pure laser treatment, the honeycomb, flaky-like appearance of dentin surface was clean and had no smear layer. The boundary between the periodontal dentin and the intertubular dentine was clear. Conclusion: Er:YAG laser treatment can increase the dentin resin bonding strength, but the appropriate energy parameters need to be studied in the future.

Key words: Er:YAG laser, Acid etching , Dentin , Shear bond strength

中图分类号:

R783.1

宋丹丹, 邱大鹏, 方慧敏, 俞青. Er:YAG激光处理对牙本质与树脂粘结强度的影响[J]. 口腔医学研究, 2017, 33(6): 629-632.

SONG Dan-dan, QIU Da-peng, FANG Hui-min, YU Qing.. Effect of Er:YAG Laser Treatment on Dentin Surface and Bonding Strength.[J]. Journal of Oral Science Research, 2017, 33(6): 629-632.

参考文献

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Er:YAG激光处理对牙本质与树脂粘结强度的影响

Effect of Er:YAG Laser Treatment on Dentin Surface and Bonding Strength.

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