de Jesus Lucas Santos, Volpato Claudia Angela Maziero, Bortoluzzi Eduardo Antunes, da Silveira Teixeira Cleonice, Rossetto Hebert Luís, de Carvalho Panzeri Pires-de-Souza Fernanda, da Fonseca Roberti Garcia Lucas
Department of Dentistry, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil.
Engineering Center, Federal University of Pelotas, Pelotas, Brazil.
J Esthet Restor Dent. 2021 Oct;33(7):999-1009. doi: 10.1111/jerd.12739. Epub 2021 Apr 30.
To assess the discoloration of teeth treated with the different phases of calcium aluminate cement (CAC), in comparison with the conventional CAC and mineral trioxide aggregate (MTA).
Fifty bovine incisors were prepared and filled. Two millimeters of the filling was removed to fabricate a cervical plug with the following cements (n=10): CA(CaO.Al O ); CA (CaO.2Al O ); C A (12CaO.7Al O ); CAC and MTA. The initial color measurement was performed and after 7, 15, 30, 45, 90, 180, and 365 days new color measurements were performed to determine the color (ΔE ), lightness (ΔL'), chroma (ΔC'), hue differences (ΔH'), and the whiteness index (WI ).
ΔE was significant for groups (p = 0.036) and periods (p < 0.05). The greater ΔE was observed after 365 days for CAC (12.8). C A (7.2) had the smallest ΔE . ΔL' and ΔC' were significant for groups and periods (p < 0.05). ΔH' was significant for periods (p < 0.05). After 365 days, significant reduction in lightness was observed for all groups. For CA, CA , CAC, and MTA groups, the WI values decreased over time (p < 0.05).
The tested cements changed the color behavior of the samples, resulting in greater teeth darkening over time.
There is no long-term study assessing the discoloration induced by the different phases of CAC.
与传统铝酸钙水泥（CAC）和矿物三氧化物凝聚体（MTA）相比，评估经不同阶段铝酸钙水泥（CAC）治疗的牙齿的变色情况。
制备并填充50颗牛切牙。去除2毫米的填充物，用以下水门汀（n = 10）制作颈缘封闭剂：CA（CaO.Al₂O₃）；CA₂（CaO.2Al₂O₃）；C₁₂A₇（12CaO.7Al₂O₃）；CAC和MTA。进行初始颜色测量，并在7、15、30、45、90、180和365天后进行新的颜色测量，以确定颜色（ΔE）、明度（ΔL'）、色度（ΔC'）、色调差异（ΔH'）和白度指数（WI）。
ΔE在组间（p = 0.036）和时间段（p < 0.05）有显著差异。365天后，CAC组的ΔE最大（12.8）。C₁₂A₇组（7.2）的ΔE最小。ΔL'和ΔC'在组间和时间段均有显著差异（p < 0.05）。ΔH'在时间段上有显著差异（p < 0.05）。365天后，所有组的明度均显著降低。对于CA、CA₂、CAC和MTA组，WI值随时间下降（p < 0.05）。
所测试水门汀改变了样本的颜色表现，导致牙齿随时间推移颜色加深。
尚无长期研究评估不同阶段CAC引起的变色情况。
