核饰瓷厚度和树脂水门汀对玻璃陶瓷贴面乳光性能的影响  

Effect of core and veneer porcelain thickness and resin cement on opalescence property of glass-ceramic veneers

作　　者：李哲敏 马雯洁 杨淑然 杨秋松 王佳宁 姚张顺 林云红[1,3] 李星星[1,3] Li Zhemin;Ma Wenjie;Yang Shuran;Yang Qiusong;Wang Jianing;Yao Zhangshun;Lin Yunhong;Li Xingxing(College of Stomatology,Kunming Medical University,Kunming 650500,China;920th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army,Kunming 650118,China;Dept.of Prosthodontics,Affiliated Stomatological Hospital of Kunming Medical University,Kunming 650100,China)

机构地区：[1]昆明医科大学口腔医学院,昆明650500 [2]中国人民解放军联勤保障部队第九二〇医院,昆明650118 [3]昆明医科大学附属口腔医院口腔修复科,昆明650100

出　　处：《华西口腔医学杂志》2022年第4期403-408,共6页West China Journal of Stomatology

基　　金：昆明医科大学附属口腔医院复杂颅颌面畸形多学科诊疗省创新团队项目(202105AE160004);云南省教育厅科学研究基金项目(2021J0274);云南省科技厅联合专项(202101AY070001-192)。

摘　　要：目的分析不同瓷层厚度和树脂水门汀对玻璃陶瓷贴面修复变色牙乳光性能的影响。方法采用计算机辅助设计与计算机辅助制造(CAD/CAM)工艺制作IPSe.maxCADLTA3瓷贴面试件,核瓷组厚度分别为0.25 mm和0.50 mm;核瓷/饰瓷组厚度为0.25 mm核瓷/0.25 mm牙本质瓷、0.50 mm核瓷/0.25 mm牙本质瓷、0.50 mm核瓷/0.50 mm牙本质瓷和0.50 mm核瓷/0.25 mm牙本质瓷/0.25 mm切端瓷。模拟瓷贴面临床粘接程序,在CAD/CAM瓷贴面试件底部涂布VariolinkNBleachXL水门汀,制作CAD/CAM瓷贴面-树脂水门汀复合试件。利用分光光度计测试试件在反射和透射模式下色度值,并计算乳光值。结果0.25 mm、0.50 mm核瓷组和0.25 mm核瓷/0.25 mm牙本质瓷、0.50 mm核瓷/0.25 mm牙本质瓷、0.50 mm核瓷/0.50 mm牙本质瓷、0.50 mm核瓷/0.25 mm牙本质瓷/0.25 mm切端瓷瓷贴面试件乳光值分别为6.10±0.50、7.00±0.24、6.40±0.24、7.08±0.28、7.16±0.21、7.81±0.11。随着核瓷厚度增加,乳光值显著增大(P<0.05);核瓷厚度相同,增加0.25 mm牙本质瓷,乳光值的差异无统计学意义(P>0.05)。对于0.5mm核瓷组,牙本质瓷厚度从0.25 mm增加至0.5 mm,乳光值差异无统计学意义(P>0.05),但增加0.25 mm切端瓷后乳光值显著增大(P<0.05)。0.25 mm核瓷/0.25 mm牙本质瓷、0.50 mm核瓷/0.25 mm牙本质瓷、0.50 mm核瓷/0.50 mm牙本质瓷和0.50 mm核瓷/0.25 mm牙本质瓷/0.25 mm切端瓷CAD/CAM瓷贴面-树脂水门汀复合体试件的乳光值分别为6.29±0.31、7.56±0.36、7.67±0.30、8.65±0.53,随瓷层厚度增加乳光值增大(P<0.05),但0.50 mm核瓷/0.25 mm牙本质瓷和0.50 mm核瓷/0.50 mm牙本质瓷组间差异无统计学意义(P=0.733)。瓷层厚度和树脂水门汀对试件乳光值的影响均有统计学差异(P<0.05),总厚度与有无树脂水门汀间无交互作用(P>0.05)。结论玻璃陶瓷贴面修复变色牙时,为提高其乳光性能获得自然逼真的修复效果,推荐采用核瓷表面烧结切端瓷的设计,同时�Objective This study aimed to analyze the effect of core and veneer porcelain thickness and resin cement on the opalescence property(OP)of glass-ceramic veneers,which were used to restore discolored teeth.Methods IPS e.max CAD LT A3 ceramic specimens were fabricated by computer aided design and computer aided manufacturing(CAD/CAM).The thickness values of core porcelain groups were 0.25 and 0.50 mm,and those of the core/veneer porcelain groups were 0.25 mm core/0.25 mm dentin,0.50 mm core/0.25 mm dentin,0.50 mm core/0.50 mm dentin,and 0.50 mm core/0.25 mm dentin/0.25 mm incisal.To simulate the clinical bonding procedure of porcelain veneer,resin cement Variolink N Bleach XL was coated at the bottom of CAD/CAM porcelain veneer specimens to make composite specimens of CAD/CAM porcelain veneer and resin cement.The L*a*b*values of specimens in the reflection and transmission pattern were measured by a spectrophotometer.Then,the OP was calculated.Results The OP values of 0.25 and 0.50 mm core porcelain groups,and 0.25 mm core/0.25 mm dentin,0.50 mm core/0.25 mm dentin,0.50 mm core/0.50 mm dentin,and 0.50 mm core/0.25 mm dentin/0.25 mm incisal core/veneer porcelain groups were 6.10±0.50,7.00±0.24,6.40±0.24,7.08±0.28,7.16±0.21,and 7.86±0.11 respectively.With increasing thickness of core porcelain,the OP values increased significantly(P<0.05).When 0.25 mm-thick dentin porcelain was added,no significant difference was found in the OP values of specimens with the same core porcelain thickness(P>0.05).For the 0.50 mm core porcelain group,no significant difference was found between 0.25 and 0.50 mm-thick dentin porcelain groups(P>0.05),but the OP values increased significantly after increasing the 0.25 mm incisal porcelain(P<0.05).The OP values of 0.25 mm core/0.25 mm dentin,0.50 mm core/0.25 mm dentin,0.50 mm core/0.50 mm dentin,and 0.50 mm core/0.25 mm dentin/0.25 mm incisal CAD/CAM porcelain veneer-resin cement composite specimens were 6.29±0.31,7.56±0.36,7.67±0.30,and8.65±0.53.The OP values increased with incre

关 键 词：瓷贴面 乳光性能 计算机辅助设计与计算机辅助制造 树脂水门汀 

分 类 号：R783.3[医药卫生—口腔医学]