CAJ | 학술논문

目的探讨Al2O3喷砂处理对二氧化锆陶瓷表面粗糙度、元素构成及树脂粘接耐久能力的影响.方法可切削二氧化锆陶瓷片试件60个经烧结、研磨、清洗后,30个试件表面在0.3 MPa压力下接受50 μm Al2O3颗粒喷砂处理20 s,形成喷砂后试件(另30个不喷砂试件为喷砂前试件).使用激光共聚焦显微镜对喷砂前、后的陶瓷表面粗糙度进行测量.使用X射线能谱仪对喷砂前、后的陶瓷表面元素成分进行定性定量分析.试件分为6组,每组10个:1、2组分别由喷砂前、后试件与常规树脂粘接剂(Duolink)粘接;3、4组分别由喷砂前、后试件分别与含磷酸酯类功能性单体的树脂粘接剂(Panavia F)粘接;5和6组分别由喷砂前、后试件经含磷酸酯类功能性单体的硅烷偶联剂(Clearfil Ceramic Primer)处理后与Panavia F粘接.各组试件分为两个亚组,分别经0、10 000次冷热循环后测量剪切粘接强度.使用单因素方差分析和独立样本t检验进行统计.结果喷砂后陶瓷表面氧元素原子百分比[(65.03±1.48)%]显著低于喷砂前 [(75.85±1.61)%],锆元素原子百分比[(17.30±1.43)%]显著高于喷砂前[(9.62±0.29)%](P<0.001),同时表面粗糙度高于喷砂前(P<0.001).冷热循环降低了所有组粘接强度(P<0.001),其中1、2组试件在循环过程中全部脱落,3、5组粘接强度[(0.59±0.17)、(0.89±0.84)MPa]显著低于4、6组粘接强度[(14.63±3.03)、(16.64±1.90) MPa],6组粘接强度显著高于4组(P<0.001).所有试件粘接断裂模式均为陶瓷-粘接剂界面断裂.结论 Al2O3喷砂处理在增加二氧化锆陶瓷表面粗糙度和表面积的同时,也增加了表面锆元素的质量和原子百分比,从而提高了二氧化锆陶瓷与含磷酸酯类功能性单体的树脂粘接剂间的化学粘接耐久能力.
목적 탐토Al2O3분사처리대이양화고도자표면조조도、원소구성급수지점접내구능력적영향.방법 가절삭이양화고도자편시건60개경소결、연마、청세후,30개시건표면재0.3 MPa압력하접수50 μm Al2O3과립분사처리20 s,형성분사후시건(령30개불분사시건위분사전시건).사용격광공취초현미경대분사전、후적도자표면조조도진행측량.사용X사선능보의대분사전、후적도자표면원소성분진행정성정량분석.시건분위6조,매조10개:1、2조분별유분사전、후시건여상규수지점접제(Duolink)점접;3、4조분별유분사전、후시건분별여함린산지류공능성단체적수지점접제(Panavia F)점접;5화6조분별유분사전、후시건경함린산지류공능성단체적규완우련제(Clearfil Ceramic Primer)처리후여Panavia F점접.각조시건분위량개아조,분별경0、10 000차랭열순배후측량전절점접강도.사용단인소방차분석화독립양본t검험진행통계.결과 분사후도자표면양원소원자백분비[(65.03±1.48)%]현저저우분사전 [(75.85±1.61)%],고원소원자백분비[(17.30±1.43)%]현저고우분사전[(9.62±0.29)%](P<0.001),동시표면조조도고우분사전(P<0.001).랭열순배강저료소유조점접강도(P<0.001),기중1、2조시건재순배과정중전부탈락,3、5조점접강도[(0.59±0.17)、(0.89±0.84)MPa]현저저우4、6조점접강도[(14.63±3.03)、(16.64±1.90) MPa],6조점접강도현저고우4조(P<0.001).소유시건점접단렬모식균위도자-점접제계면단렬.결론 Al2O3분사처리재증가이양화고도자표면조조도화표면적적동시,야증가료표면고원소적질량화원자백분비,종이제고료이양화고도자여함린산지류공능성단체적수지점접제간적화학점접내구능력.
Objective To evaluate the effect of Al2O3 particles sandblasting on the surface roughness, element composition and resin bond durability of zirconia ceramic. Methods Sixty 2.5 mm thick computer aided design and computer aided manufacture(CAD/CAM) zirconia ceramic (Vita Inceram YZ) plates were fired, polished and cleaned. Half of polished ceramic plates was sandblasted with 50 μm alumina particles at 0.3 MPa for 20 s. The surface roughness of polished and sandblasted ceramic surface were measured by 3D-laser scanning microscope, and the surface element weight and atom ratio of the ceramic surface were measured by energy disperse spectroscopy(EDS). Then polished and sandblasted ceramic plates were randomized into six groups. In Group 1 and 2 the polished and sandblasted ceramic plates were bonded irrespectively with conventional resin cement(DUOLINK) . In Group 3 and 4 the ceramic plates were bonded with resin cement containing MDP(Panavia F), In Group 5 and 6 the specimens were pretreated with silane coupler acitivated by MDP(Clearfil Ceramic Primer), then bond with Panavia F. The specimens of each test group were then divided into two subgroups, and to received shear test after 0 and 10 000 time thermal cycle. The data was analyzed by one-way ANOVA and independent t test. ResultsComparing with polishing, sandblasting reduced the oxygen atom and weight ratio of zirconia ceramic surface (P<0.001), and increased the zirconium atom and weight ratio (P<0.001), meanwhile increased the surface roughness (P<0.001). The bond strength between ceramic plates and resin cement in all test groups decreased after thermocycling (P<0.001). All specimen in test group 1 and 2 lost bond, and the bond strength of test group 3 and 5[(0.59±0.17), (0.89±0.84) MPa] were significantly lower than that of test group 4 and 6[(14.63±3.03), (16.64±1.90) MPa], and the bond strength of test group 6 were significanlty higher than that of test group 4. Conclusions Sandblasting improves durability of bond between zirconia ceramic and resin cement containing MDP, not only by increasing the roughness and area of ceramic surface, but also by changing its surface element composition to obtain more chemical bond.