Sealing properties of a new epoxy resin-based root-canal sealer

Abstract

In this study a new epoxy-resin-based endodontic sealer, AH Plus, was tested in vitro for apical leakage. The conventional sealer AH26, for which information is already available, was used as the control. The root canals of 72 single-rooted teeth were prepared biomechanically using a stepback technique before lateral condensation of gutta-percha with one of the two sealers. Teeth were immersed in 5% methylene blue dye for 2, 4 or 10 days. The roots were split longitudinally so that the extent of dye penetration could be measured with a stereomicroscope. The mean extent at 2 days was 0.4 mm for AH26 and 1.4 mm for AH Plus. Neither material produced a complete apical seal and leakage increased with the duration of immersion in dye. The differences between observation periods as well as between materials with respect to dye penetration were statistically significant ANOVA, (P < 0.005).

Comparison of the Intraosseous Biocompatibility of AH Plus, EndoREZ, and Epiphany Root Canal Sealers

“…However, even after the setting period, toxicity may still exist (24). So, amines, present in AH Plus composition, which accelerate polymerization, could be also the reason for strong initial toxicity (25). Furthermore, inflammatory activity together with intact blood supply in the tissue repair process could eliminate initial toxicity of the material (26).…”

In Vitro Analysis of AHPlus and MM-Seal by ESR and Thermoanalytical Methods

“…If these materials have toxic characteristics, then they may cause inflammatory reactions in periapical tissues [1,2] and can interact with biomolecules in tissues. This interaction can damage living tissues [3][4][5][6].…”

The Effect of Different Irrigating Solutions on Bond Strength of Two Root Canal–filling Systems

“…Therefore, a suitable dentin substrate could be provided for the adhesion of materials with hydrophobic nature as the resinous AH plus. Furthermore, the effective removal of the smear layer by EDTA allowed for the extension of the resin into the open dentinal tubules, creating efficient microretention as previously reported (13,14). On the contrary, such decreased wetting ability of dentin surface treated with 17% EDTA prohibited the adhesion of materials hydrophilic in nature as ActiV GP.…”

“…Ideal endodontic cement must seal the root canal space and should adhere to both the gutta-percha core and canal wall (12). Epoxy resin-based sealer cements such as AH Plus sealer (Dentsply, Detrey, GmbH, Germany) have been widely used because of their acceptable physical properties, reduced solubility, apical sealability, microretention to root dentin, and adequate biological performance (13,14).…”