中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (47): 7627-7632.doi: 10.3969/j.issn.2095-4344.2014.47.015

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

不同参数铒:钇激光表面处理后纤维桩的黏结强度

李晓杰1,胡书海1,董  明2,许  诺2,任  翔1,左恩俊1   

  1. 1大连医科大学口腔医学院,辽宁省大连市  116044
    2大连医科大学中山分校,辽宁省大连市  116028
  • 修回日期:2014-10-28 出版日期:2014-11-19 发布日期:2014-11-19
  • 通讯作者: 左恩俊,硕士,主治医师,大连医科大学口腔医学院,辽宁省大连市 116044
  • 作者简介:李晓杰,女,1978年生,辽宁省大连市人,满族,2005年大连医科大学毕业,硕士,讲师,主治医师,主要从事口腔修复学基础和临床方面研究。
  • 基金资助:

    辽宁省科技厅科学事业公益研究基金(2013001007)

Effect of surface treatment using Er:YAG laser with different parameters on the bond strength of fiber posts

Li Xiao-jie1, Hu Shu-hai1, Dong Ming2, Xu Nuo2, Ren Xiang1, Zuo En-jun1   

  1. 1College of Stomatology, Dalian Medical University, Dalian 116044, Liaoning Province, China
    2Zhongshan College of Dalian Medical University, Dalian 116028, Liaoning Province, China
  • Revised:2014-10-28 Online:2014-11-19 Published:2014-11-19
  • Contact: Zuo En-jun, Master, Attending physician, College of Stomatology, Dalian Medical University, Dalian 116044, Liaoning Province, China
  • About author:Li Xiao-jie, Master, Lecturer, Attending physician, College of Stomatology, Dalian Medical University, Dalian 116044, Liaoning Province, China
  • Supported by:

    a grant from the Public-Service Foundation of Liaoning Department of Science and Technology for Scientific Development, No. 2013001007

摘要:

背景:近年来,纤维桩和树脂核已经被广泛应用于修复已行根管治疗后的大面积牙体硬组织缺损,并取得了令人满意的效果。铒:钇铝石榴石激光(erbium: yttrium aluminum garnet laser,Er:YAG激光)是新型水动力激光系统,可以用于纤维桩的表面处理。但是关于Er:YAG激光表面处理对纤维桩黏结强度影响的实验研究国内外鲜有报道。
目的:探讨不同参数Er:YAG激光进行表面处理对玻璃纤维桩与不同部位根管牙本质黏结强度的影响。
方法:选择50颗新鲜拔除根长相近的单根管上颌中切牙,常规根管治疗后去除牙冠,完成根桩牙体预备后,黏固ParaPost FIBER LUX玻璃纤维桩至根管内。根据黏固前桩表面处理方法,将50颗离体牙随机等分为5组:对照组、1.5,2.5,3.5和4.5 W ER:YAG激光照射组。对照组未进行表面处理,1.5,2.5,3.5和4.5 W ER:YAG激光照射组纤维桩分别以150,250,350和450 mJ,频率为10 Hz,脉冲持续频率为100 μs的Er:YAG激光进行表面处理60 s。
结果与结论:纤维桩与牙本质间黏结强度均值牙颈部最大,根中部次之,根尖部最小。牙颈部黏结强度与根中部和根尖部之间差异有显著性意义(P < 0.05);根中部与根尖部之间差异无显著性意义(P > 0.05)。相同根管部位的黏结强度值均表现为4.5 W ER:YAG激光照射组最高,且与其他组比差异有显著性意义(P < 0.05)。说明用  4.5 W Er:YAG桩表面处理可提高纤维桩与根管牙本质的黏结强度,且根颈部黏结强度大于根中及根尖部。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 口腔生物材料, 铒, 钇铝石榴石激光, 表面处理, 纤维桩, 推出实验, 弹性模量, 上颌中切牙, 釉牙骨质界, 黏结强度

Abstract:

BACKGROUND: Recent years, fiber posts and resin cores have been widely used in repairing the endodontically treated teeth with satisfactory effect. Erbium:yttrium aluminum garnet (Er:YAG) laser is a new type of water power laser system, which can be used for surface treatment of fiber posts. But studies on the effect of Er:YAG laser surface treatment on the bond strength of fiber posts are rarely reported.
OBJECTIVE: To evaluate the effect of surface treatment utilizing Er:YAG laser irradiation with different parameters on the bond strength of fiber posts to root canal dentin.
METHODS: Fifty human maxillary central incisors that had similar dimensions were used. After endodontic treatment, removal of the crown and canal preparation, ParaPost FIBER LUX glass fiber posts were cemented into the root canals. According to the method of surface treatment, 50 teeth were randomly divided into: no surface treatment as control group; four groups undergoing surface preparation with Er:YAG laser with four different power settings (150, 250, 350 and 450 mJ at 10 Hz for 60 s at 100-μs pulse duration), named 1.5, 2.5, 3.5, and 4.5 W Er:YAG laser irradiation groups, respectively.
RESULTS AND CONCLUSION: The mean bond strength values reduced from the cervical to the apical root canal, and the bond strength of the dental cervix was significantly different from that of middle and apical thirds (P < 0.05), but there was no difference between the middle and apical thirds (P > 0.05). Regardless of the different part of the root slices, the bond strength was highest in the 4.5 W Er:YAG laser irradiation group, showing significant difference from other groups (P < 0.05). These findings indicate that 4.5 W Er:YAG laser irradiation significantly increases the bond strength of the fiber posts to root canal dentin.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words: lasers, surface properties, dentin-bonding agents, dental bonding

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