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  本文選題：金屬全冠　切入點：黏結(jié)材料　出處：《大連醫(yī)科大學(xué)》2012年碩士論文

【摘要】：目的：通過在掃描電鏡下觀察黏結(jié)材料與牙本質(zhì)層的元素構(gòu)象，分析比較出不同黏結(jié)材料與牙本質(zhì)層的結(jié)合方式，探討其對固位力的影響，為臨床選擇不同的黏結(jié)材料提供理論依據(jù)。 材料和方法：選用8顆近期拔出的、牙體形態(tài)完整的后牙。將離體后牙于釉牙骨質(zhì)處包埋于石膏模具中，對牙冠進行常規(guī)牙體預(yù)備，使預(yù)備后的基牙外形保持相對一致的高度。用聚醚橡膠制取印模、人造石灌注模型、用失蠟鑄造法完成金屬全冠的制作。全冠試戴完成后，依次編號，，用8種黏結(jié)材料按照廠家的要求進行黏結(jié)，實驗標(biāo)本保存于23+1□C，100%相對濕度的環(huán)境中，30天后實驗標(biāo)本與石膏模具分離，包埋于環(huán)氧樹脂中。 用慢速鋸沿牙長軸方向?qū)嶒灅?biāo)本縱向切開，切面經(jīng)打磨拋光、超聲清洗后，在500倍掃描電鏡下觀察黏結(jié)界面的形貌和構(gòu)象，采用電子探針對黏結(jié)材料與牙本質(zhì)的黏結(jié)界面并作線掃描和元素定量分析，觀測元素質(zhì)量分?jǐn)?shù)的變化。 分別對金屬全冠，牙本質(zhì)層，黏結(jié)材料和黏結(jié)界面進行點掃描，100倍的放大倍數(shù)下對試件進行線掃描。選定黏結(jié)材料的主要元素并通過觀察數(shù)據(jù)分析黏結(jié)界面50μm以內(nèi)的元素交換轉(zhuǎn)移情況。 結(jié)果： 1GC Fuji Plus中檢測出Al、Si、P、 F、K、F等元素。在黏結(jié)界面50μm內(nèi)檢測出Al、Si、 C、O、Ca等元素。 2GC Fuji I中檢測出Al、Si、P、S、K等元素。在黏結(jié)界面50μm內(nèi)檢測出Al、P、C、Ca等元素。 3Shofu Glasionomer中檢測出Al、Si、P、K、Ca等元素。在黏結(jié)界面50μm內(nèi)檢測出Mg、Si、C、O、Ca等元素。 4Shofu Resiglass中檢測出Al、Si、P、K等元素。在黏結(jié)界面50μm內(nèi)檢測出Al、Si、C、O、Ba等元素。 5Livcarbo中檢測出Si、Zn、P等元素。在黏結(jié)界面50μm內(nèi)檢測出Zn、P、C、O等元素。 6Panaviya F中檢測出C、O、Si、Mg等元素。在黏結(jié)界面50μm內(nèi)檢測出Si、S、 C、O、等元素。 73M Relyx (TM) Unicem中檢測出Al、Si、C、O、Ba等元素。在黏結(jié)界面50μm內(nèi)檢測出Al、Si、P、S、Ca等元素。 8Bisco DOU-LINKTM中檢測出Al、Si、Na、K、P、F、Ca等元素。在黏結(jié)界面50μm內(nèi)檢測出Al、Si、P、S、C、O、等元素。 前4組玻璃離子黏結(jié)材料元素轉(zhuǎn)移最為活躍，GC Fuji I最明顯。復(fù)合樹脂因為有樹脂突形成混合層，構(gòu)象顯示其結(jié)合最致密。 結(jié)論： 1.黏結(jié)材料和牙本質(zhì)間可發(fā)生元素滲透。 2.不同種類的黏結(jié)材料，黏結(jié)界面的致密性，連續(xù)性存在差異。 3.元素滲透的區(qū)域為1μm-50μm，隨著滲透區(qū)域的加深，滲透減弱。 4.結(jié)合構(gòu)象觀察復(fù)合樹脂黏結(jié)界面最致密，玻璃離子元素滲透最為活躍。
[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.
【學(xué)位授予單位】：大連醫(yī)科大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：R783.1

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