Bhavya B, Sadique Mohammed, Simon Elsy P, Ravi S V, Lal Sandeep
Department of Conservative Dentistry and Endodontics, KMCT Dental College, Kozhikode, Kerala, India.
J Conserv Dent. 2017 Jul-Aug;20(4):237-240. doi: 10.4103/0972-0707.219203.
The aim of this study was to evaluate the specific chromatic alterations in tooth crowns induced by two different endodontic restorative materials.
This study was conducted at the Department of Conservative Dentistry, KMCT Dental College, Kozhikode, Kerala.
Forty-five freshly extracted, fully developed, single-rooted teeth were prepared and randomly assigned to two experimental groups ( = 15 each) and one negative control group ( = 15). Group 1 consists of white mineral trioxide aggregate (WMTA), Biodentine formed Group 2, and controls formed Group 3. Double-beam ultraviolet spectrophotometer equipment was used to assess the coronal discoloration as determined by CIE *, *, and * and their corresponding total values.
At baseline, no significant difference was detected for CIE values between the groups. Group 1 showed a significant decrease in *, *, and * values over time. The color change with WMTA led to clinically perceptible crown discoloration after 6 weeks which exceeded the perceptible threshold for the human eye, i.e., Δ > 3.3. No changes were observed with Biodentine.
Materials used in endodontics may stain teeth. WMTA induced clinically perceptible crown discoloration, whereas Biodentine demonstrated color stability.
本研究旨在评估两种不同的根管修复材料引起的牙冠特定颜色改变。
本研究在喀拉拉邦科泽科德KMCT牙科学院保守牙科系进行。
准备45颗新鲜拔除的、完全发育的单根牙，并随机分为两个实验组（每组 = 15颗）和一个阴性对照组（ = 15颗）。第1组由白色三氧化矿物聚合体（WMTA）组成，第2组由生物陶瓷（Biodentine）组成，第3组为对照组。使用双光束紫外分光光度计设备评估由CIE 、 和 * 及其相应总值确定的冠部变色情况。
在基线时，各组之间的CIE值未检测到显著差异。第1组随着时间的推移，、 和 * 值显著下降。使用WMTA导致的颜色变化在6周后导致临床上可察觉的牙冠变色，超过了人眼的可察觉阈值，即Δ>3.3。生物陶瓷（Biodentine）未观察到变化。
牙髓病学中使用的材料可能会使牙齿染色。WMTA导致临床上可察觉的牙冠变色，而生物陶瓷（Biodentine）表现出颜色稳定性。
