四环素牙陶瓷贴面修复后颜色稳定性的随机对照研究。
A randomized controlled study on color stability of tetracycline teeth restored with ceramic veneer.
机构信息
Dept. of Stomatology, Affiliated Hospital of Jiangnan University, Wuxi 214000, China.
Dept. of Prosthodontics, Shanghai Ninth People,s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China.
出版信息
Hua Xi Kou Qiang Yi Xue Za Zhi. 2021 Jun 1;39(3):336-340. doi: 10.7518/hxkq.2021.03.014.
OBJECTIVES
This study aimed to evaluate the color stability of tetracycline teeth restored with ceramic veneers of different thicknesses combined with different resin cement systems after aging.
METHODS
Twenty patients with tetracycline teeth, including two maxillary central incisors, were selected clinically. The patients were randomly divided into four groups and restored with 0.5 and 0.75 mm ceramic veneers by using a veneer adhesive system, either with light-cured or dual-cured reaction. The color difference (ΔE) values after cementation and 1, 6, 12, and 24 months of use were obtained by quantification of L*, a*, and b* values with a colorimeter. The results were analyzed statistically with two-way ANOVA and Student's test.
RESULTS
The ΔE values of ceramic veneers detected after aging were less than 2.25. The 0.5 mm groups exhibited greater color change than the 0.75 mm-thick veneers (<0.05). No significant difference was found on the color change of dual- or light-cured resin cements.
CONCLUSIONS
Resin cements and veneer thickness influence the color of ceramic veneers after aging. Cementation of veneers with either dual- or light-cured resin cements does not affect the long-term color stability of tetracycline teeth differently.
目的
本研究旨在评估经过老化后，不同厚度的陶瓷贴面与不同树脂水门汀系统联合应用于四环素牙修复时的颜色稳定性。
方法
临床选择 20 名四环素牙患者，包括两颗上颌中切牙。将患者随机分为四组，使用贴面粘结系统分别修复 0.5 和 0.75mm 厚的陶瓷贴面，其中分别采用光固化或双重固化反应。使用比色计定量测定 L*、a和 b值，获得粘结后及使用 1、6、12 和 24 个月后的颜色差异（ΔE）值。采用双向方差分析和学生 t 检验对结果进行统计学分析。
结果
老化后检测到的陶瓷贴面的 ΔE 值小于 2.25。0.5mm 组的颜色变化大于 0.75mm 厚的贴面（<0.05）。双固化或光固化树脂水门汀的颜色变化无显著差异。
结论
树脂水门汀和贴面厚度会影响老化后陶瓷贴面的颜色。使用双固化或光固化树脂水门汀粘结贴面不会对四环素牙的长期颜色稳定性产生不同影响。
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