不同粘结系统用于树脂陶瓷复合材料的体外实验研究
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南京医科大学口腔疾病研究江苏省重点实验室

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江苏高校优势学科建设工程资助项目(2018-87)


In vitro experimental study of different bonding systems for resin ceramic composites
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Jiangsu Key Laboratory of Oral Disease of NJMU,Department of Prosthodontics,Affiliated Hospital of Stomatology of NJMU

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the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD, 2018-87)

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    摘要:

    目的:研究不同粘接系统及老化处理对树脂陶瓷复合材料与牙本质间粘接强度的影响。方法:本研究使用了一种新型树脂陶瓷修复材料(LavaTM Ultimate优韧瓷)。在实验的第一部分,将制备好的离体牙随机分为3组,按照两步法自酸蚀通用型粘接系统、全酸蚀粘接系统、一步法通用型粘接系统将优韧瓷块与离体牙的牙本质面粘接,使用微机控制电子万能实验机测试每组粘接试件的静态断裂强度,并观察其断口形貌。实验第二部分则将按以上三组粘接系统的剪切样本浸泡在3种不同酸碱度的溶液(可乐、苏打水、人工唾液)中,30天后比较各组剪切强度间差异。结果:实验发现对于树脂复合陶瓷材料优韧瓷,一步法及两步法通用型粘接系统组的剪切强度皆优于全酸蚀粘接系统,而一步法通用型粘接系统与两步法自酸蚀通用型粘接系统间的粘接性能差异无统计学意义。三种粘接系统的剪切强度在不同浸泡液中浸泡老化后均下降,但浸泡液种类对剪切强度无显著影响。结论:三种粘接系统对优韧瓷与牙体间的剪切强度均达到临床要求,且酸碱老化处理不影响三种粘接系统的剪切强度。

    Abstract:

    Objective: To study the effect of different bonding systems and aging treatment on the bonding strength between resin ceramic composites and Dentin. Methods: A new hybrid ceramic restorative material (LavaTM Ultimate excellent toughness porcelain) was used in this study. In the first part of the experiment, the prepared isolated teeth were randomly divided into three groups: a two-step self-etching universal adhesive system, a total acid etching adhesive system (experimental group), and a green giant one-step universal adhesive system. The excellent toughness ceramic block was bonded to the isolated dentin surface. The static fracture strength of each group was measured using a microcomputer controlled electronic universal experimental machine, and the fracture morphology was observed. In the second part of the experiment, the shear specimens of the above three adhesive systems were immersed in three different solutions (cola, soda water, artificial saliva) for 30 days to compare the difference of shear strength between the groups. Results: The shear strength values of the two universal adhesive systems were both significantly higher than that of the total acid etching adhesive system. For resin composite ceramic materials with superior toughness, the shear strength of the one-step universal bonding system was better than that of the two-step self etching universal bonding system. The shear strength of the three bonding systems decreased after acid and alkali immersion aging, but it had little relationship with which solution they were immersed in. Conclusion: The shear strength of the three bonding systems for superior toughness porcelain meets clinical requirements, but the acid base aging treatment can reduce the shear strength of the three bonding methods for superior toughness porcelain.

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  • 收稿日期:2023-04-25
  • 最后修改日期:2023-08-01
  • 录用日期:2023-10-18
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