Effect of technique of sealer agitation on percentage and depth of MTA Fillapex sealer penetration: A comparative in-vitro study

Abstract

Aim:To compare the effect of three root canal sealer activation techniques on percentage and depth of sealer penetration of MTA Fillapex and AH Plus sealers.Materials and Methods:Sixty teeth prepared till F5 ProTaper size were divided into three equal groups on the basis of sealer activation technique (G1: Ultrasonics, G2: Lentulo spiral, and G3: Counter-clockwise rotary motion). Each group was further divided into two equal subgroups on the basis of type of sealer used: AH Plus (Denstply, Konstanz, Germany) or MTA Fillapex (Angelus, Londrina, PR, Brazil) and obturated with gutta-percha. Horizontal sections at 3 and 6 mm from the apex were obtained and the percentage and depth of penetration of sealers into dentinal tubules were measured using confocal laser scanning microscopy (CLSM). Statistical analysis was performed utilizing Kruskal-Wallis and Mann-Whitney U tests with a significance level of 5%.Results:G1 showed significantly (P < 0.001) high percentage and depth of sealer penetration than G2 and G3 while the difference was insignificant (P > 0.05) between G2 and G3.Conclusion:Percentage and depth of sealer penetration are influenced by the type of sealer used sealer activation technique and by the root canal level. Ultrasonic method of sealer activation and MTA Fillapex showed the best results.

The Influence of Humidity on Intra-tubular Penetration and Bond Strength of AH Plus and MTA Fillapex: An in Vitro Study

“…In the present study, MTA Fillapex showed higher penetrability values when compared with AH Plus, as confirmed by other studies (6,19). Also, the penetrability of MTA Fillapex and AH Plus was not affected by moisture conditions, showing statistically significant difference (P<0.05).…”

“…However, it was not sufficient to show a statistically significant difference. These results could be justified by the different composition and smaller particle size of MTA Fillapex, which has been correlated to greater flowability compared to AH Plus (19). In addition, this could be related to higher lateral condensation forces or due to the dentin structure in these parts of the roots (20).…”

In vitro evaluation of the sealing ability of three newly developed root canal sealers: A bacterial microleakage study

“…Nikhil et al (28) compared the depth of penetration of MTA Fillapex and AH Plus sealers into the dentinal tubules with the use of a confocal laser microscope and reported that MTA Fillapex sealer penetrated deeper into the dentinal tubules. These results do not coincide with the results of the present study or it is better to conclude that although MTA Fillapex exhibits deeper penetration into dentinal tubules, it does not result in better apical seal.…”

Capacidade de selamento e penetração intratubular do MTA Fillapex e do AH Plus em dentes humanos

“…Em análises com infiltração bacteriana, resultados divergentes colocam o MTA Fillapex como semelhante 4 ou inferior ao AH Plus 5 . Em relação à penetração tubular dentinária, testes usando microscopia confocal demonstraram maior penetração do MTA Fillapex quando comparado ao AH Plus 6 . O cimento resinoso AH Plus (De trey-Dentsply, Konstanz, Germany) é um cimento insolúvel aos tecidos e com boa capacidade de selamento apical, o que mantém níveis de infiltração menores em relação a outros materiais como o Epiphany, Apexit e Ketac-Endo 7 .…”

“…O cimento resinoso AH Plus (De trey-Dentsply, Konstanz, Germany) é um cimento insolúvel aos tecidos e com boa capacidade de selamento apical, o que mantém níveis de infiltração menores em relação a outros materiais como o Epiphany, Apexit e Ketac-Endo 7 . É o cimento de eleição em estudos comparativos de infiltração 4,5 e penetração intratubular 6 avaliando cimentos novos, como o MTA Fillapex.…”