CAJ | 학술논문

目的探讨磁控溅射氮化铌(niobium nitride,NbN)对钛-瓷(Vita钛瓷粉系统)结合强度的影响,以期为钛-瓷修复体的临床应用提供参考.方法根据随机数字表将60个钛试件随机分为T1、T2、T3和T4四个实验组.T1和T2组试件表面均先行120μm Al2O3喷砂,T2组试件表面再行磁控溅射氮化铌涂层.T3和T4组试件表面均先行磁控溅射氮化铌涂层,T4组试件表面再行120μmAl2O3喷砂.X射线衍射分析仪(X-ray diffraction,XRD)分析各组涂层物相.试件烤瓷后用万能实验机测试钛-瓷结合强度.扫描电子显微镜-X射线能谱仪(scanning electron microscopy with energy depressive spectrum,SEM-EDS)观察和分析钛-瓷结合界面.结果 XRD观察到T2、T3和T4组均存在立方晶型的氮化铌新相.三点弯曲实验测得T1-T4组试件的钛-瓷结合强度分别为(27.2±0.8)、(43.1±0.6)、(31.4±1.0)和(44.9±0.6)Mpa,4组间差异有统计学意义(P<0.05).两两比较显示,任意两组间差异均有统计学意义(P<0.05).SEM观察T1和T3组钛-瓷结合界面可见明显孔隙和裂纹,T2和T4组钛-瓷结合较好,EDS线扫描显示,T1组钛基底氧化明显,T2组和T3组界面处存在钛氧化行为,T4组界面处钛基底的氧化得到抑制.结论磁控溅射氮化铌可抑制烤瓷侧钛基底的氧化,提高钛-瓷结合强度,同时表明Al2O3喷砂处理也能提高钛-瓷结合强度.
목적 탐토자공천사담화니(niobium nitride,NbN)대태-자(Vita태자분계통)결합강도적영향,이기위태-자수복체적림상응용제공삼고.방법 근거수궤수자표장60개태시건수궤분위T1、T2、T3화T4사개실험조.T1화T2조시건표면균선행120μm Al2O3분사,T2조시건표면재행자공천사담화니도층.T3화T4조시건표면균선행자공천사담화니도층,T4조시건표면재행120μmAl2O3분사.X사선연사분석의(X-ray diffraction,XRD)분석각조도층물상.시건고자후용만능실험궤측시태-자결합강도.소묘전자현미경-X사선능보의(scanning electron microscopy with energy depressive spectrum,SEM-EDS)관찰화분석태-자결합계면.결과 XRD관찰도T2、T3화T4조균존재립방정형적담화니신상.삼점만곡실험측득T1-T4조시건적태-자결합강도분별위(27.2±0.8)、(43.1±0.6)、(31.4±1.0)화(44.9±0.6)Mpa,4조간차이유통계학의의(P<0.05).량량비교현시,임의량조간차이균유통계학의의(P<0.05).SEM관찰T1화T3조태-자결합계면가견명현공극화렬문,T2화T4조태-자결합교호,EDS선소묘현시,T1조태기저양화명현,T2조화T3조계면처존재태양화행위,T4조계면처태기저적양화득도억제.결론 자공천사담화니가억제고자측태기저적양화,제고태-자결합강도,동시표명Al2O3분사처리야능제고태-자결합강도.
Objectives To investigate the effect of magnetron sputtered niobium nitride (NbN) on the bonding strength of commercially pure cast titanium (Ti) and low-fusing porcelain (Ti/ Vita titankeramik system).Methods Sixty Ti specimens were randomly divided into four groups, group Tl, T2, T3 and T4.All specimens of group Tl and T2 were first treated with 120 μm blasted Al2O3 particles, and then only specimens of group T2 were treated with magnetron sputtered NbN film.All specimens of group T3 and T4 were first treated with magnetron sputtered NbN film and then only specimens of group T4 were treated with 120 μm blasted Al2O3 particles.The composition of the deposits were analyzed by X-ray diffraction (XRD).A universal testing machine was used to perform the three-point bending test to evaluate the bonding strength of Ti and porcelain.The microstructure of NbN, the interface of Ti-porcelain and the fractured Ti surface were observed with scanning electron microscopy (SEM) and energy depressive spectrum (EDS) , and the results were compared.Results The XRD results showed that the NbN deposits were cubic crystalline phases.The bonding strength of Ti and porcelain in Tl to T4 group were (27.2±0.8) , (43.1±0.6) , (31.4±1.0) and (44.9±0.6) MPa.These results were analyzed by one-way analysis of variance and differences between groups were compared using least significant difference test Significant inter-group differences were found among all groups (P<0.05).The results of SEM showed that with treatment of Al2O3 or NbN, alone, pre-cracks were found in the interface of Ti-porcelain, while samples treated with both Al2O3 and NbN had better bond.EDS of Ti-porcelain interface showed oxidation occurred in T1, T2 and T3, but was well controlled in T4.Conclusions Magnetron sputtered NbN can prevent Ti from being oxidized, and can improve the bonding strength of Ti/Vita titankeramik system.Al2O3 blast can also improve the bonding strength of Ti/Vita titankeramik system.