Evaluation of the Sealing Ability and Bond Strength of Two Endodontic Root Canal Sealers: An In Vitro Study

Abstract

Background: Obturation represents a critical step in endodontic treatment, which relies on a core material and a sealer. This study aims to evaluate the sealing ability and bond strength to the root canal walls of an epoxy resin-based sealer (AH-Plus®, Dentsply Sirona, Johnson City, TN, USA) and a bioceramic sealer (GuttaFlow Bioseal®, Coltène/Whaledent, GmbH + Co. KG, Langenau, Germany). Methods: Thirty-eight maxillary anterior teeth with single roots and identical round sections were separated into two experimental groups according to the root canal sealers used, namely, G1 = AH-Plus® and G2 = GuttaFlow Bioseal®, and two control groups, specifically, G3 = the negative control and G4 = the positive control. The sealing capacity was measured by the penetration of the radioactive isotope 99mTc. For the push-out test, the compressive force test was performed in a universal machine and the force was applied by exerting pressure on the surface of the material to be tested in the apical to the coronal direction and using three test points with different diameters. Results: GuttaFlow Bioseal® exhibited superior sealing ability compared to AH-Plus® (p = 0.003). Regarding the bond strength, AH-Plus® provided higher adhesion values than GuttaFlow Bioseal® in the three sections of the tooth root (p = 0.001). Conclusions: GuttaFlow Bioseal® had significantly better sealing ability than AH-Plus® but lower adhesion values in the three zones of the root canal, with statistically significant differences between the groups. However, it is important to note that for the action of endodontic sealers to be maximized, the root-filling technique must be most appropriate.

Influence of bioceramic cones on the quality of root canal filling relative to bond strength and adaptation of the adhesive interface

“…This was followed by complementary analysis of the failure pattern in a stereomicroscope and analysis of the adhesive interface by laser scanning confocal microscopy and scanning electron microscopy, thereby enabling visualization of the endodontic ller sealer layer and evaluation of empty spaces present at the adhesive interface [32-34, 36, 37, 40-42]. Although this test shows variations in relation to sample thickness, tip and root canal diameter [43,44], in the present study these variables were standardized so that the risk of bias was minimized.…”

Comparison of Apical Sealing Capacity of ActiV GP/Glass Ionomer Sealer Versus Resilon/RealSeal and Gutta Percha/AH plus Sealers

“…Gutta-percha has been used and is still recognized as the most favored material due to its properties as a biocompatible, chemically inactive, dimensionally stable, and malleable material [21][22][23][24][25]. Adhesive systems have demonstrated trustworthy outcomes in restorative dentistry, including long-term execution and reduced procedure sensitivity.…”

A Comprehensive Review of the Sealing Abilities of Various Root Canal Sealers

“…Nonetheless, alternative methods and substances possessing distinct physicochemical and biological characteristics have been developed. Excellent physical characteristics of the epoxy resin-based sealers include low solubility, high flow rate, low volumetric polymerization contraction, and adaptability to the dentine walls of the canals (21). Low molecular weight epoxy resins and amines comprise epoxy resin-based sealers like AH 26 and AH Plus.…”