中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (29): 5391-5394.doi: 10.3969/j.issn.1673-8225.2010.29.018

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

医用聚氨酯粘结剂对瓷-牙本质粘结强度的影响

梁凤林1，陈湘涛1，刘艳丽2，李金贤3，陈  琳4   

  1. 1佳木斯大学附属第二医院（口腔医院）口腔修复科，黑龙江省佳木斯市 154002；2大连医科大学附属口腔门诊，辽宁省大连市116027； 3佳木斯大学附属第二医院牙体牙髓病科，黑龙江省佳木斯市 154002；4佳木斯大学附属第六医院口腔科，黑龙江省佳木斯市154004
  • 出版日期:2010-07-16 发布日期:2010-07-16
  • 通讯作者: 陈湘涛，硕士生导师，教授，佳木斯大学附属第二医院（口腔医院）口腔修复科，黑龙江省佳木斯市 154002 chenxiangtao0298@163.com。
  • 作者简介:梁凤林★，男，1981年生，黑龙江省鸡西市人，汉族，佳木斯大学在读硕士，主要从事粘结剂方面的研究。
  • 基金资助:

    黑龙江省佳木斯大学2009科学技术研究项目(S2009-047)，课题名称：医用聚氨酯粘结剂对瓷-牙本质粘结强度的研究。

Influence of polyurethane sealant on shear bond strength of ceramic and dentin

Liang Feng-lin1, Chen Xiang-tao1, Liu Yan-li2, Li Jin-xian3, Chen Lin4   

  1. 1 Department of Prosthetic Dentisty, Second Affiliated Hospital of Jiamusi University, Jiamusi   154002, Heilongjiang Province, China; 2 Out-patient Clinics of Stomatology, Dalian Medical University, Dalian  116027, Liaoning Province, China; 3 Department of Conservative Dentistry & Endodontics, Second Affiliated Hospital of Jiamusi University, Jiamusi  154002, Heilongjiang Province, China; 4 Department of Stomatology, Sixth Affiliated Hospital of Jiamusi University, Jiamusi   154004, Heilongjiang Province, China
  • Online:2010-07-16 Published:2010-07-16
  • Contact: Chen Xiang-tao, Master’s supervisor, Professor, Department of Prosthetic Dentisty, Second Affiliated Hospital of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China chenxiangtao0298@163.com
  • About author:Liang Feng-lin★, Studying for master’s degree, Department of Prosthetic Dentisty, Second Affiliated Hospital of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China liangfenglin1981@163.com
  • Supported by:

    Jiamusi University Project of Science and Technology during 2009, No.S2009-047*

PDF

319

被引次数

1

摘要：

背景：聚氨酯粘结剂是近年来发展起来的粘结材料，研究表明其对多种材料有很强的粘结力，但在口腔修复领域的应用情况研究甚少。
目的：评价聚氨酯粘结剂对瓷-牙本质粘结强度的有效性。
方法：选择无龋坏青年人前磨牙制备牙本质粘结面，铸造直径为3 mm、高为3 mm的圆柱状瓷块48个，分别选用聚氨酯、Variolink Ⅱ、Panavia F粘结剂将瓷块粘固于牙本质粘结面上，每组制成8个试样37 ℃水储24 h后直接进行剪切测试, 另8个试样进行500次的冷热循环后再进行剪切测试，扫描电镜观察粘结面形态。
结果与结论：冷热循环前聚氨酯组粘结强度最大，Variolink Ⅱ组次之，Panavia F组最小。冷热循环后聚氨酯组粘结强度仍是最大，Variolink Ⅱ组次之，Panavia F组最小。与冷热循环前相比，冷热循环后3组粘结强度均下降，差异有显著性意义(P < 0.05)。扫描电镜观察发现医用聚氨酯粘结剂与牙本质的界面无明显的树脂突，其他2组树脂粘结剂的粘结界面观察到了树脂突结构。结果提示医用聚氨酯粘结剂的粘结强度大于以自酸蚀和全酸蚀技术为基础的树脂粘固剂。

关键词: 医用聚氨酯粘结剂, 粘固作用, 冷热循环, 酸蚀, 口腔生物材料

Abstract:

BACKGROUND: Polyurethane sealant system has been developed in recent years as newly adhesive materials in medical field, it has strong bonding property with many medical materials. However, studies on stomatology are few.
OBJECTIVE: To evaluate the effectiveness of polyurethane sealant on shear bond strength between glass ceramic and human dentin.
METHODS: Freshly extracted non-carious human premolars were collected to prepare flat mesial and distal dentin surface with diamond bur. Totally 48 ceramic discs (3 mm in diameter, 3 mm in height) were fabricated and then cementated on dentin bonding surface using polyurethane sealant, Variolink Ⅱ and Panavia F, respectively. Eight specimens in each group were stored in 37 ℃ water for 24 hours, directly receiving shearing test, while the other 8 specimens in each group were additionally thermocycled for 500 times before shear bond strength test. The treated dentin surface was examined with scanning electronic microscopy.
RESULTS AND CONCLUSION: Polyurethane group showed the highest bond strength before thermocycling, then Variolink Ⅱ group and Panavia F group the lowest. Group C had the lowest bond strength. After thermocycling, polyurethane group showed the highest bond strength before thermocycling, then Variolink Ⅱ group, and Panavia F group the lowest bond strength. The bond strength of all groups significantly decreased after thermocycling (P < 0.05). Scanning electron microscopy observation revealed that resin tags were not obvious on the interface between dentin and medical polyurethane sealant, while the formation of resin tags could be easily defected on the interfaces between dentin and other two resin cements. The polyurethane sealant has a higher bond strength to dentin than those based on self-etch bonding system and etch-rinsing resin cements.

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