Forabosco Eleonora, Generali Luigi, Mancuso Edoardo, Kaleci Shaniko, Consolo Ugo, Checchi Vittorio
Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance, University of Modena and Reggio Emilia, Modena, Italy.
Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy.
J Conserv Dent Endod. 2024 Mar;27(3):280-285. doi: 10.4103/JCDE.JCDE_295_23. Epub 2024 Mar 6.
Restorative dentistry aims to reproduce natural tooth shades through resin composites that must be layered to obtain colors, opacities, and translucencies, and therefore, clinical success is operator skill dependent.
The purpose of this study is to evaluate the color shift of single-shade composite restorations before and after dental bleaching.
Eighty human extracted posterior teeth were restored with four single-shade composites (Omnichroma OM; Clearfil Majesty ES-2 Universal CL; Essentia Universal ES; Venus Diamond One VE) ( = 20 each). Standardized V class cavities were prepared on buccal side. VITA Easyshade V spectrophotometer was used to register VITA color and color coordinates 24 h before (T), 24 h after (T), and 1 week after (T) dental bleaching (Opalescence Boost PF 40%). Color differences (ΔE) and (ΔWI) were calculated and subjected to statistical analysis.
Categorical variables were analyzed using Pearson Chi-square, and data from color coordinates were analyzed using one-way analysis of variance and Tukey's multiple comparison test with Bonferroni correction. Paired -tests were performed to compare continuous measures between groups and treatment time.
Instrumental evaluations revealed statistically significant differences between materials ( < 0.05) with lower values for ES and VE samples followed by CL and OM at T and T. At T, OM and CL ΔE values decrease getting closer to ES and VE.
Single-shade composites seem to match with the surrounding bleached tooth.
口腔修复学旨在通过树脂复合材料再现天然牙齿的色泽，这些复合材料必须分层使用以获得颜色、不透明度和半透明度，因此，临床成功与否取决于操作者的技术。
本研究的目的是评估单色调复合树脂修复体在牙齿漂白前后的颜色变化。
选取80颗拔除的人类后牙，用四种单色调复合材料（全色度OM；可乐丽幻彩通用型CL；本质通用型ES；维纳斯钻石一号VE）进行修复（每种20颗）。在颊侧制备标准化的V类洞。使用VITA Easyshade V分光光度计在牙齿漂白前24小时（T0）、漂白后24小时（T1）和漂白后1周（T2）记录VITA颜色和颜色坐标（Opalescence Boost PF 40%）。计算颜色差异（ΔE）和（ΔWI）并进行统计分析。
分类变量采用Pearson卡方检验进行分析，颜色坐标数据采用单因素方差分析和经Bonferroni校正的Tukey多重比较检验进行分析。进行配对t检验以比较组间和治疗时间的连续测量值。
仪器评估显示材料之间存在统计学显著差异（P<0.05），ES和VE样本在T0和T1时的值较低，其次是CL和OM。在T2时，OM和CL的ΔE值降低，更接近ES和VE。
单色调复合材料似乎与周围漂白后的牙齿相匹配。
