Punathil Sameer, Almalki Sultan A, AlJameel AlBandary H, Gowdar Inderjit M, Mc Vijay Amarnath, Chinnari Krishnarao
Department of Pediatric and Preventive Dentistry, Sree Anjaneya Institute of Dental Sciences, Calicut, Kerala, India, Phone: +91 9526227454, e-mail:
Department of Preventive Dental Sciences, College of Dentistry, Prince Sattam Bin Abdul Aziz University, Alkharj, Kingdom of Saudi Arabia.
J Contemp Dent Pract. 2019 Jul 1;20(7):778-782.
The present study aimed to assess the microleakage in primary teeth restored with tooth-colored materials using the dye penetration method.
A total of 60 healthy primary molar teeth were included in this study and standardized class II mesio-occlusal cavities were prepared on the samples. Consequently, these teeth were randomly divided into three experimental groups ( = 20 each group) such as group I: nano-filled resin-modified glass-ionomer, group II: nanocomposite resin, and group III: Cention N. After completing all the restorations, the restored teeth were subjected to 100 cycles of thermocycling. Next, all the surfaces of the tooth, except the restoration and a 1-mm zone adjacent to the restoration's margins, were covered with two coats of nail varnish. The coated teeth were then submerged in a 0.5% basic fuchsin dye solution. The teeth were then sectioned along the center of each restoration mesiodistally. Each part was visualized under a stereomicroscope at ×40 magnifications to assess microleakage.
Out of all the included restorative materials, the least microleakage was demonstrated by teeth restored by the nano-filled resin-modified glass-ionomer (RMGI) group (1.05 ± 0.21) followed by the Cention N group (1.84 ± 0.14) and the nanocomposite resin group (3.10 ± 0.03). A statistical method involving the analysis of variance revealed a statistically significant difference among the different restorative materials. Multiple comparisons among the restorative materials showed a statistically significant difference between groups I and II and groups II and III restorative materials ( < 0.05). The dye penetration score 1 was more [11(55%)] for the nano-filled RMGI group, score 3 was more [12(60%)] for the nanocomposite resin group, and score 2 was more [9(45%)] for the Cention N group.
The present study showed significantly less microleakage associated with the nano-filled resin-modified glass ionomer group than nanocomposite resin and Cention N groups.
Since many years, dentists have encountered a challenging problem with cervical lesions. Thus, an interdisciplinary treatment approach is the appropriate option in the management of carious teeth that involve gingival recession and cervical extension.
本研究旨在采用染料渗透法评估用牙齿颜色材料修复的乳牙的微渗漏情况。
本研究共纳入60颗健康的乳磨牙，在样本上制备标准化的II类近中咬合面洞。随后，将这些牙齿随机分为三个实验组（每组n = 20），即：I组：纳米填充树脂改性玻璃离子水门汀，II组：纳米复合树脂，III组：Cention N。完成所有修复后，对修复后的牙齿进行100次热循环。接下来，除修复体及修复体边缘附近1毫米区域外，牙齿的所有表面均涂两层指甲油。然后将涂覆后的牙齿浸入0.5%碱性品红染料溶液中。然后沿每个修复体的中心近远中向切开牙齿。在体视显微镜下以×40放大倍数观察每个部分，以评估微渗漏情况。
在所有纳入的修复材料中，纳米填充树脂改性玻璃离子水门汀（RMGI）组修复的牙齿微渗漏最少（1.05±0.21），其次是Cention N组（1.84±0.14）和纳米复合树脂组（3.10±0.03）。方差分析的统计方法显示不同修复材料之间存在统计学显著差异。修复材料之间的多重比较显示I组和II组以及II组和III组修复材料之间存在统计学显著差异（P<0.05）。纳米填充RMGI组的染料渗透评分为1的更多[11（55%）]，纳米复合树脂组评分为3的更多[12（60%）]，Cention N组评分为2的更多[9（45%）]。
本研究表明，与纳米复合树脂组和Cention N组相比，纳米填充树脂改性玻璃离子水门汀组的微渗漏明显更少。
多年来，牙医在处理颈部病变时遇到了一个具有挑战性的问题。因此，对于涉及牙龈退缩和颈部扩展的龋齿，跨学科治疗方法是合适的选择。
