目的:该研究旨在使用放射性同位素方法和共聚焦激光扫描显微镜(CLSM)评估纳米颗粒基(NPB)氰基丙烯酸酯密封剂和环氧树脂基(ERB)密封剂的微渗漏。
方法:共收集100颗单根牙齿;仪表化,灌溉,并随机分为4组,每组25个样品:I组:阳性对照,第二组:阴性对照,组III:用NPB密封剂填充,第IV组:接受ERB封口剂。将所有样品浸入99mTc高tech酸盐溶液中,3小时后,在伽玛相机下估计放射性。统计分析去除指甲油前后标本释放的放射性。2周后,相同的样品用于CLSM分析。使用ZENlite2012在每组的最深水平处测量密封管穿透深度。收集的数据进行统计学评估。
结果:在第III组和第IV组中首先观察到的放射性量分别为194.76和599.12个单位,分别,p值<0.001,表明显著的相互作用,去除指甲油后,它是89.68和468.44单位,分别,p值<0.001;再次,表明统计学意义。因此,在这两种情况下,发现NPB封口剂的放射性均低于ERB封口剂,表明前者的密封性更好。显微照片显示,首先,染料在NPB封口剂中的渗透平均值,第二,从顶点开始的第三段分别为85.06、75.73和66.09;而在ERB密封剂的情况下,分别为597.28、461.17和195.68;p值<0.001;表明NPB封口剂比ERB封口剂具有更高的抗微泄漏能力。
结论:由于氰基丙烯酸酯和掺入的纳米颗粒具有优异的理化性质,因此NPB密封剂可以成为未来牙髓学中潜在的根管密封剂。
结论:该研究在临床上表明,在进行微渗漏研究时,我们可以同样使用放射性同位素方法和共聚焦方法。此外,NPB密封剂可以是一种新兴的替代品,比临床使用的金标准根管密封剂具有更好的性能。如何引用这篇文章:ShettyC,QaiserS,ShettyA,etal.使用放射性同位素方法评估纳米颗粒掺入的氰基丙烯酸酯根管密封剂的微渗漏:体外研究。JContempDentPract2024;25(4):335-341。
OBJECTIVE: The study aimed to assess the microleakage of nanoparticle-based (NPB) cyanoacrylate sealer and epoxy resin-based (ERB) sealer using radioisotope method and confocal laser scanning microscopy (CLSM).
METHODS: A total of 100 single-rooted teeth were collected; specimens were accessed, instrumented, and irrigated, and randomly distributed into 4 groups of 25 samples each: Group I: Positive control, group II: Negative control, group III: Obturated with NPB sealer, and group IV: Obturated with ERB sealer. All samples were immersed in 99mTc pertechnetate solution, for 3 hours after which radioactivity was estimated under a Gamma camera. The radioactivity released by specimens before and after nail varnish removal was statistically analyzed. After 2 weeks, the same samples were used for CLSM analysis. The sealer tubular penetration depth was measured at the deepest level for each group using ZEN lite 2012. Data collected was statistically evaluated.
RESULTS: The amount of radioactivity observed at first in group III and group IV was 194.76 and 599.12 units, respectively, with p-value < 0.001, indicating significant interaction, and after nail varnish removal, it was 89.68 and 468.44 units, respectively, with a p-value < 0.001; again, indicating statistical significance. Hence, the radioactivity of NPB sealer was found to be lower than ERB sealer in both cases, indicating better sealing of the former. The photomicrographs show that mean value of dye penetration in NPB sealer in first, second, and third segment from apex was 85.06, 75.73, and 66.09, respectively; while in the case of ERB sealer, those were 597.28, 461.17, and 195.68, respectively; with p-value < 0.001; signifying that NPB sealer exhibited higher resistance to microleakage than ERB sealer.
CONCLUSIONS: The NPB sealer can become a potential root canal sealer in future endodontics due to superior physiochemical properties attributed to the cyanoacrylate and incorporated nanoparticles.
CONCLUSIONS: The study clinically signifies that we can equally use the radioisotopic method along with confocal method while conducting the microleakage studies. In addition, NPB sealer can be an emerging replacement with better properties than gold standard root canal sealers for clinical use. How to cite this article: Shetty C, Qaiser S, Shetty A, et al. Evaluation of Microleakage of Nanoparticle-incorporated Cyanoacrylate Root Canal Sealer Using the Radioisotopic Method: An In Vitro Study. J Contemp Dent Pract 2024;25(4):335-341.