不同黏结材料与金属全冠黏结界面的实验研究

发布时间：2018-04-09 05:34

本文选题：金属全冠　切入点：黏结材料　出处：《大连医科大学》2012年硕士论文

【摘要】：目的：通过在扫描电镜下观察黏结材料与牙本质层的元素构象，分析比较出不同黏结材料与牙本质层的结合方式，探讨其对固位力的影响，为临床选择不同的黏结材料提供理论依据。材料和方法：选用8颗近期拔出的、牙体形态完整的后牙。将离体后牙于釉牙骨质处包埋于石膏模具中，对牙冠进行常规牙体预备，使预备后的基牙外形保持相对一致的高度。用聚醚橡胶制取印模、人造石灌注模型、用失蜡铸造法完成金属全冠的制作。全冠试戴完成后，依次编号，，用8种黏结材料按照厂家的要求进行黏结，实验标本保存于23+1□C，100%相对湿度的环境中，30天后实验标本与石膏模具分离，包埋于环氧树脂中。用慢速锯沿牙长轴方向将实验标本纵向切开，切面经打磨抛光、超声清洗后，在500倍扫描电镜下观察黏结界面的形貌和构象，采用电子探针对黏结材料与牙本质的黏结界面并作线扫描和元素定量分析，观测元素质量分数的变化。分别对金属全冠，牙本质层，黏结材料和黏结界面进行点扫描，100倍的放大倍数下对试件进行线扫描。选定黏结材料的主要元素并通过观察数据分析黏结界面50μm以内的元素交换转移情况。结果： 1GC Fuji Plus中检测出Al、Si、P、 F、K、F等元素。在黏结界面50μm内检测出Al、Si、 C、O、Ca等元素。 2GC Fuji I中检测出Al、Si、P、S、K等元素。在黏结界面50μm内检测出Al、P、C、Ca等元素。 3Shofu Glasionomer中检测出Al、Si、P、K、Ca等元素。在黏结界面50μm内检测出Mg、Si、C、O、Ca等元素。 4Shofu Resiglass中检测出Al、Si、P、K等元素。在黏结界面50μm内检测出Al、Si、C、O、Ba等元素。 5Livcarbo中检测出Si、Zn、P等元素。在黏结界面50μm内检测出Zn、P、C、O等元素。 6Panaviya F中检测出C、O、Si、Mg等元素。在黏结界面50μm内检测出Si、S、 C、O、等元素。 73M Relyx (TM) Unicem中检测出Al、Si、C、O、Ba等元素。在黏结界面50μm内检测出Al、Si、P、S、Ca等元素。 8Bisco DOU-LINKTM中检测出Al、Si、Na、K、P、F、Ca等元素。在黏结界面50μm内检测出Al、Si、P、S、C、O、等元素。前4组玻璃离子黏结材料元素转移最为活跃，GC Fuji I最明显。复合树脂因为有树脂突形成混合层，构象显示其结合最致密。结论： 1.黏结材料和牙本质间可发生元素渗透。 2.不同种类的黏结材料，黏结界面的致密性，连续性存在差异。 3.元素渗透的区域为1μm-50μm，随着渗透区域的加深，渗透减弱。 4.结合构象观察复合树脂黏结界面最致密，玻璃离子元素渗透最为活跃。
[Abstract]:Objective: to study the effect of different bonding materials on the retention of dentine layer by observing the conformation of the bonding material and dentin layer under scanning electron microscope.To provide theoretical basis for clinical selection of different bonding materials.Materials and methods: 8 recently extracted teeth with complete tooth shape were selected.The extracted posterior teeth were embedded in the gypsum mould at the cementum of the enamel teeth, and the crown was prepared by routine tooth preparation, which made the abutment tooth shape keep the same height.The impression was made from polyether rubber, the artificial stone was poured into the mold, and the metal crown was made by wax loss casting.After the complete crown was worn, eight kinds of bonding materials were used for bonding according to the requirements of the manufacturer. The experimental specimens were kept in the environment of 231-CX 100% relative humidity for 30 days and then separated from the gypsum mould and buried in epoxy resin.The specimens were cut longitudinally along the long axis of the tooth with a slow saw. After polishing and ultrasonic cleaning, the morphology and conformation of the bonding interface were observed under 500 times scanning electron microscope.The bonding interface between the bonding material and dentin was observed by electron probe and the changes of mass fraction of elements were observed by linear scanning and quantitative analysis of elements.The metal crown, dentin layer, bonding material and bonding interface were scanned by linear scanning at a magnification of 100 times.The main elements of the bonding material were selected and the element exchange transfer within 50 渭 m of the bonding interface was analyzed by observing the data.Results:In 1GC Fuji Plus, the elements such as Albumin, FGK, F and so on were detected.At the bonding interface of 50 渭 m, Al _ 2O _ 2, C _ (+) O _ (2 +) Ca and other elements were detected.In 2GC Fuji I, some elements, such as Albumin, Pu, SK and so on, were detected.At the bonding interface of 50 渭 m, some elements, such as Albumin, Con, Ca and so on, were detected.In 3Shofu Glasionomer, some elements, such as Albumin, Pu, K, Ca and so on, were detected.At the bonding interface of 50 渭 m, the elements such as Mg-Si-Si-C, O, O, Ca and so on have been detected.In 4Shofu Resiglass, the elements such as Albumin, Si-Pu K and so on have been detected.At the bonding interface of 50 渭 m, the Al _ Si _ Si _ (C) O _ (O) Ba and other elements were detected.5Livcarbo and other elements were detected.In the interface of 50 渭 m, some elements such as ZnPU, Con O and so on have been detected.In 6Panaviya F, elements such as C, O, O, Si, O, mg, and so on, were detected.Sion S, Con O, and other elements were detected at the bonding interface of 50 渭 m.In 73M Relyx (TM) Unicem, the elements such as Albumin, C, O, O, Ba and so on have been detected.At the bonding interface of 50 渭 m, some elements, such as Al _ 2O _ Si _ (P _ (+)) S _ (+) _ (Ca), were detected.In 8Bisco DOU-LINKTM, the elements such as Al _ (Si-Si) Na _ (+) K _ (+) P _ (+) F _ ((+)) Ca were detected.At the bonding interface of 50 渭 m, the elements such as Al _ (Si-Si) _ P _ (()) S _ (()) C _ ((O)), and so on were detected.The most active element transfer in the first four groups of glass-ion-bonded materials was GC Fuji I.Composite resin has resin process to form a mixed layer, conformation shows that its binding is the densest.Conclusion:1.Element penetration can occur between the bonding material and dentin.2.The density and continuity of bonding interface are different among different kinds of bonding materials.3.The permeation region of the elements ranged from 1 渭 m to 50 渭 m, which decreased with the deepening of the permeation region.4.The bonding interface of composite resin is densest and the infiltration of glass ion elements is the most active.
【学位授予单位】：大连医科大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：R783.1

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