各种化学物质对丙烯酸牙与义齿基托粘结强度的影响——一项体外对比研究。
Effect of various chemicals on the bond strength of acrylic tooth and denture base -An Invitro comparative study.
作者信息
Krishna V Pridhvi, Premalatha Averneni, Babu P Jithendra, Raju D Srinivasa, Kumar M Praveen, Rao D Bheemalingeswara
机构信息
Department of Prosthodontics, MNR Dental College, Sangareddy, Andhra Pradesh, India.
Department of Prosthodontics, Dr. Sudha & Nageswara Rao Siddhartha Institute of Dental Sciences, Chinnaoutpalli, Gannavaram, Andhra Pradesh, India.
出版信息
J Int Oral Health. 2014 Feb;6(1):100-5. Epub 2014 Feb 26.
BACKGROUND
Debonding of acrylic teeth from the denture base is a common problem. Certain clinical conditions like ridge prominence leads to excess trimming of acrylic teeth and base, resulting in a weak interface. The denture base polymer debonds adhesively in the region of the highly cross -linked matrix of the teeth. To compare the effect of different chemical surface treatments on the bond between cross-linked acrylic teeth and different types of denture base material.
MATERIALS & METHODS: A total of 180 wax specimens were fabricated and divided into 3 groups: Heat-cure, high impact heat-cure, flexible denture base material bonded to acrylic teeth. Each group was further subdivided into 6 subgroups with 10 specimens each according to the surface treatment ofthe ridge lap area: control, monomer, acetone 99%, chloroform 99%, acrylic adhesive cyanoacrylate, ethyl acetate 99%. After processing, specimens were tested for bond strength using a universal testing machine. The resulting bond strengths were recorded, statistically analyzed and compared.
RESULTS
Among all the 3types of denture base resins, highimpact heat-cure denture base resin gave highest bond strength. There was no bonding of teeth with flexible denture base material. Chemical surface treatment of acrylic teeth with ethyl acetate gave highest bond strength followed by control, chloroform, acetone and cyanoacrylate groups.
CONCLUSION
Among all the 3types of denture base materials, high-impact heat-cure denture base resin gave highest bond strength with ethyl acetate surface treatment. Simple and quick tooth chemical surface treatment with ethylacetate could be an effective option in decreasing bonding failures and also avoid repeated denture repairs improving patient satisfaction. How to cite the article: Krishna VP, Premalatha A, Babu PJ, Raju DS, Kumar MP, Rao DB. Effect of various chemicals on the bond strength of acrylic tooth and denture base -An In-vitro comparative study. J Int Oral Health 2014;6(1):100-5.
背景
丙烯酸树脂牙与义齿基托分离是一个常见问题。某些临床情况，如牙槽嵴突出，会导致丙烯酸树脂牙和基托过度修整，从而产生薄弱界面。义齿基托聚合物在牙齿高度交联基质区域以粘结方式分离。为比较不同化学表面处理对交联丙烯酸树脂牙与不同类型义齿基托材料之间粘结的影响。
材料与方法
共制作180个蜡型标本，分为3组：热凝、高抗冲热凝、柔性义齿基托材料与丙烯酸树脂牙粘结。根据牙槽嵴贴合面的表面处理，每组再进一步细分为6个亚组，每组10个标本：对照组、单体、99%丙酮、99%氯仿、氰基丙烯酸酯类丙烯酸粘结剂、99%乙酸乙酯。处理后，使用万能试验机测试标本的粘结强度。记录所得粘结强度，进行统计分析并比较。
结果
在所有3种义齿基托树脂中，高抗冲热凝义齿基托树脂的粘结强度最高。柔性义齿基托材料与牙齿无粘结。用乙酸乙酯对丙烯酸树脂牙进行化学表面处理的粘结强度最高，其次是对照组、氯仿组、丙酮组和氰基丙烯酸酯组。
结论
在所有3种义齿基托材料中，高抗冲热凝义齿基托树脂经乙酸乙酯表面处理后粘结强度最高。用乙酸乙酯对牙齿进行简单快速的化学表面处理可能是减少粘结失败的有效选择，还可避免义齿反复修理，提高患者满意度。如何引用本文：Krishna VP, Premalatha A, Babu PJ, Raju DS, Kumar MP, Rao DB. 各种化学物质对丙烯酸树脂牙与义齿基托粘结强度的影响——一项体外比较研究。《国际口腔健康杂志》2014；6(1)：100 - 5。
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