Characterization of Leachates from 6 Root Canal Sealers.

Introduction: The aim of this study was to evaluate 6 different endodontic sealers by characterizing their leachates and comparing their solubility in water over a 4-week period.

Methods: The solubility of each sealer (Apexit Plus [Ivoclar Vivadent AG, Schaan, Liechtenstein], MTA Fillapex [Angelus Dental, Londrina, Brazil], AH Plus [Dentsply DeTrey, Konstanz, Germany], BioRoot RCS [Septodont, Saint-Maur-des-Fossés, France], Total Fill [FKG Dentaire SA, La Chaux-de-Fonds, Switzerland], and Obturys [Itena, Paris, France]) was tested according to the ISO specification 6876:2012 over a 4-week period. Residues were chemically analyzed using energy-dispersive X-ray spectroscopy.

Synchrotron-based Phase Contrast-enhanced Micro-Computed Tomography Reveals Delaminations and Material Tearing in Water-expandable Root Fillings Ex Vivo.

Introduction: This study evaluated the integrity of calcium silicate sealer-based fillings made with hygro-expandable cones (HEC) that are commercially known as CPoint or Smartpoint.

Methods: Fourteen human canines were prepared according to a standardized, conventional endodontic treatment protocol and filled with the HEC/calcium silicate sealer. Three-dimensional imaging was performed with laboratory micro-computed tomography (μCT) at its highest resolution and was compared with synchrotron phase contrast-enhanced μCT (PCE-CT) scans of the treatment extending 1-7 mm from the apex.

Bioactivity Potential of EndoSequence BC RRM Putty.

Introduction: The aim of this study was to characterize and assess the interaction of EndoSequence BC RRM putty (Brasseler USA, Savannah, GA) in contact with blood and simulated body fluid. Tricalcium silicate-based materials are in contact with blood and tissue fluids during and after their setting. These materials are hydraulic; thus, their properties improve in moist conditions.

A Central Incisor with 4 Independent Root Canals: A Case Report.

The maxillary central incisor is the tooth with the least anatomic variations. Despite the fact that several studies have reported a prevalence of 100% for the presence of a single canal, root canal aberrations of maxillary central incisors with up to 3 canals have also been reported. Such cases represent both a diagnostic and technical challenge to the clinician.

Porosity distribution in root canals filled with gutta percha and calcium silicate cement.

Objective: Gutta percha is commonly used in conjunction with a sealer to produce a fluid-tight seal within the root canal fillings. One of the most commonly used filling methods is lateral compaction of gutta percha coupled with a sealer such as calcium silicate cement. However, this technique may result in voids and worse, the filling procedures may damage the root.

Effect of a two-step placement procedure on the dislocation resistance of a methacrylate resin-based root canal sealer: a proof of concept.

Purpose: To investigate whether the placement of a methacrylate root canal sealer or a conventional epoxy root canal sealer in two steps increases their dislocation resistance when compared to a one-step placement procedure.

Materials And Methods: Eighty single-rooted teeth were randomly allocated to 4 groups (n=20). All canals were instrumented to size 40, 0.