Time-based lateral hygroscopic expansion of a water-expandable endodontic obturation point.

Objectives: This study compared the time-based lateral expansion of two sizes and two batches of water-expandable obturation points (CPoint, EndoTechnologies, LLC) and a similar-sized gutta-percha point (control) at various distances from the point apex: 5, 10, and 15mm.

Methods: Two batches of sizes 25 and 40 (0.06 taper) CPoints and a single lot of size 40 (0.

In Vitro biocompatibility evaluation of a root canal filling material that expands on water sorption.

Introduction: CPoint is a polymeric endodontic point that takes advantage of water-induced, non-isotropic radial expansion to adapt to canal irregularities. This study evaluated the effects of CPoint on the viability and mineralization potential of odontoblast-like cells.

Methods: The biocompatibility of CPoint and commercially available gutta-percha points was evaluated by using a rat odontoblast-like cell line (MDPC-23).

Periapical pressures developed by nonbinding irrigation needles at various irrigation delivery rates.

Introduction: Injection of sodium hypochlorite (NaOCl) from the root canal into periapical tissues may result in a NaOCl incident. The purpose of this study was to examine the fluid pressure generated by canal cleansing devices at the apical interface, when the tip of the irrigation device was not binding to the canal walls.

Methods: Apical pressure was monitored in a closed-system root canal model, with NaOCl delivered by a syringe pump at 0.