摘要
目的 评价人工老化后瓷聚体-树脂水门汀联合体的颜色稳定性,为临床合理选择和应用瓷聚体贴面提供参考.方法 3种厚度（1.00、0.75、0.50 mm）瓷聚体（Ceramage）分别与5种色调[A1、A3、B0.5、WO（白色不透明）、TR（透明）]树脂水门汀（RelyX Veneer）制备瓷聚体-树脂水门汀联合体样本,共15组（每组5个样本）,作为实验组.以3种厚度（1.00、0.75、0.50 mm）瓷聚体样本作为3个对照组（每组5个样本）.所有样本同时放入氙灯老化仪中进行人工加速老化,分光光度仪测量老化前后样本的明度（L＊）、红绿色品（a＊）和黄蓝色品（b＊）值,计算老化前后明度变化（△L）、红绿色品变化（△a）、黄蓝色品变化（△b）和色差（△E）.用方差分析探讨瓷聚体厚度和树脂水门汀色调对老化前后△E的影响.结果 不同厚度瓷聚体或不同色调水门汀对瓷聚体-树脂水门汀联合体老化前后△E有影响（P＜0.05）,且瓷聚体厚度和水门汀色调间存在交互作用（P＜0.05）.所有实验组△E均小于3.3.所有实验组老化后L＊均降低,且△L均小于2.0.结论 瓷聚体厚度与树脂水门汀色调均对瓷聚体-树脂水门汀联合体的颜色稳定性有影响;瓷聚体-树脂水门汀联合体老化后的明度变化和色差均在临床可接受的范围内.
Objective To investigate the color stability of ceromer veneers/resin cements after accelerated ageing, and to provide the reference for clinical application and choice. Methods Fifteen groups of ceromer veneers/resin cements samples, five samples in each group, were prepared as experimental groups. In the fifteen groups ,ceromer veneers in three thickness （1.00, 0. 75, 0. 50 mm） and resin cements of five shades（A1 ,A3, B 0. 5, WO, TR）,were matched through permutation and combination. Three groups of ceromer veneers with different thickness （ 1.00, 0. 75, 0. 50 ram） were used as control groups. All samples were put into xenon lamp ageing instrument to accelerate ageing. Spectrophotometer were used to measure the lightness（ L＊ ）, red green color （a＊） and blue yellow color （b＊） of samples before and after accelerated ageing process, and the change of lightness （AL）, red green color （Aa）, blue yellow color （ Ab ） and color variation（AE） were calculated. We investigated the effect of thickness of eeromer veneer and color of resin cement on color variation by using analysis of variance. Results The thickness factor and color factor showed significant effect on AE values, and they have interaction （P 〈 0. 05 ）. The AE values of all experimental groups were lower than 3. 3. After accelerated ageing, all L ＊ values of experimental groups decreased, and AL values were lower than 2. 0. Conclusions The thickness of ceromer veneer and the color of resin cement could both affect the color stability of ceromer veneers/resin cements. The changes of lightness and color in ceromer veneers/resin cements were considered clinically acceptable after accelerated ageing.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2014年第2期111-114,共4页
Chinese Journal of Stomatology
关键词
美学
牙科
树脂粘固剂
复合树脂类
Esthetics, dental
Resin cements
Composite resins
