中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (29): 5383-5386.doi: 10.3969/j.issn.1673-8225.2010.29.016

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

非贵金属烤瓷基底口内喷砂对瓷修补树脂黏结强度的影响

邱  憬，陈亚明，冯丽君   

  1. 江苏省口腔医院口腔修复科， 江苏省南京市  210029
  • 出版日期:2010-07-16 发布日期:2010-07-16
  • 通讯作者: 陈亚明，教授，主任医师，江苏省口腔医院口腔修复科，江苏省南京市 210029 Yaming_chen@ yahoo.com
  • 作者简介:邱 憬★，男，1978年生，江苏省镇江市人，汉族，硕士，主治医师，讲师，主要从事口腔修复学的临床与科研工作。 shear.qiu@163.com
  • 基金资助:

    与日本Kuraray公司合作科研基金项目（22008002）。

Influence of non-precious porcelain alloys on bond strength of restorative composite resins after intra-oral sandblasting

Qiu Jing, Chen Ya-ming, Feng Li-jun   

  1. Department of Prosthodontics, Stomatological Hospital of Jiangsu Province, Nanjing   210029, Jiangsu Province, China
  • Online:2010-07-16 Published:2010-07-16
  • Contact: Che Ya-ming, Professor, Chief physician, Department of Prosthodontics, Stomatological Hospital of Jiangsu Province, Nanjing 210029, Jiangsu Province, China Yaming_chen@yahoo.com
  • About author:Qiu Jing★, Master, Attending physician, Lecturer, Department of Prosthodontics, Stomatological Hospital of Jiangsu Province, Nanjing 210029, Jiangsu Province, China shear.qiu@163.com
  • Supported by:

    Co-operation Science Research Funds with Kuraray, No. 22008002*

PDF

562

被引次数

5

摘要：

背景：已有国内外学者对崩瓷后暴露瓷面的处理与黏结进行了实验研究。然而，临床观察中发现，大部分崩瓷病例均伴有不同程度的金属基底暴露，而且，对于临床广泛应用的非贵金属烤瓷基底——镍铬、钴铬合金，其表面处理与树脂黏结的研究较少。
目的：探讨口内喷砂对非贵金属烤瓷基底表面粗糙度与瓷修补树脂黏结强度的影响。
方法：将镍铬合金试件与钴铬合金试件随机分为镍铬组、镍铬喷砂组、钴铬组、钴铬喷砂组。口内喷砂后，测定各组试件表面粗糙度。采用Clearfil Repair瓷修补系统进行树脂黏结修复，经37 ℃恒温水浴24 h后，测定各组剪切黏结强度。体视显微镜观察断裂模式，扫描电子显微镜观察断裂试件的表面形貌。
结果与结论：镍铬喷砂组、钴铬喷砂组粗糙度值、剪切黏结强度显著高于镍铬组、钴铬组，钴铬喷砂组粗糙度值显著高于镍铬喷砂组(P < 0.05)。体视显微镜下观察到镍铬组与钴铬组试件全部表现为黏结破坏，而镍铬喷砂组与钴铬喷砂组的小部分试件呈现黏结破坏与树脂内聚破坏共存的混合破坏模式。扫描电镜观察显示，镍铬组与钴铬组试件的树脂-金属断裂面仅有少量树脂残留，而镍铬喷砂组与钴铬喷砂组则观察到较多嵌入的树脂残留。提示口内喷砂能有效增强非贵金属烤瓷基底的表面粗糙度与瓷修补树脂黏结强度

关键词: 烤瓷, 口内喷砂, 表面粗糙度, 瓷修补, 黏结强度, 口腔材料

Abstract:

BACKGROUND: Several researches have studied the surface treatment and resin bond strength on the fractured porcelain surface. However, clinical observations show that most of the porcelain fractured cases are more or less exposed in the metal substrates, and there are little studies about surface treatment and resin bond strength on the widely used non-precious metal substrates, which include nickel-chromium (Ni-Cr) and cobalt-chromium (Co-Cr) alloys.
OBJECTIVE: To study the surface roughness and the bond strength of non-precious porcelain alloys and restorative composite resins after intra-oral sandblasting.
METHODS: Ni-Cr alloy specimens and Co-Cr alloy specimens were fabricated and randomly divided into 4 groups: Ni-Cr group, Ni-Cr sandblasted group, Co-Cr group, Co-Cr sandblasted group. Subsequent to intra-oral sandblasting, the surface roughness of specimens in each group was measured. Using Clearfil Repair kits, specimens’ surfaces were bonded to restorative composite resin cylinders. After specimens were stored at 37℃ in distilled water for 24 hours, shear bond strengths were measured and fracture surfaces were visually analyzed using the stereomicroscope and scanning electron microscopy.
RESULTS: Ni-Cr sandblasted group and Co-Cr sandblasted group showed significant higher surface roughness and shear bond strength than Ni-Cr group and Co-Cr group respectively (P < 0.05). Under the stereomicroscope, all specimens of Ni-Cr group and Co-Cr group revealed adhesive failures, whereas majority of Ni-Cr sandblasted group and Co-Cr sandblasted group revealed adhesive failures and minority of them revealed combination failures. Scanning electron microscopy images showed that resin-metal fracture surfaces of Ni-Cr group and Co-Cr group had few remnants of composite resin, and those of Ni-Cr sandblasted group and Co-Cr sandblasted group had lots of small embedded remnants of composite resin. Intra-oral sandblasting could enhance the surface roughness and shear bond strength of non-precious porcelain alloys and restorative composite resins.

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