When Maxillofacial CBCT Permits Fortuitously to Diagnose Primary Non-Hodgkin's Lymphoma: A Case Report.

A 47-year-old male with an unremarkable medical history was referred for atypical endodontic pain and treatment of his left upper molars. Clinical and radiographic examinations revealed an extensive, undefined osteolytic area around these teeth. A subsequent bone biopsy diagnosed diffuse large B-cell lymphoma, a high-grade non-Hodgkin's lymphoma.

Comparative analysis of canal transportation and centring ability of three Ni-Ti rotary endodontic systems: Protaper®, MTwo® and Revo-S™, assessed by micro-computed tomography.

The aim of this study was to use high-resolution micro-CT to evaluate the effects of three Ni-Ti rotary endodontic instruments, Mtwo® (VDW, München, Germany), ProTaper® (Dentsply-Maillefer, Ballaigues, Switzerland) and Revo-S™ (MicroMega, Besançon, France), on canal transportation and centring ratio. Fifty-four mesial roots of extracted mandibular molars with an angle of curvature of 25-35° were randomly divided into three groups of eighteen. Each group was instrumented with a previously unused Ni-Ti rotary system.

Sealer penetration and adaptation in the dentinal tubules: a scanning electron microscopic study.

Introduction: Tubular penetration and adaptation of the sealer can determine the sealability of the root filling. The aim of this study was to assess, in vitro, the tubular adaptation and penetration depth and the adaptation to the root canal walls in the apical, middle, and coronal third of the root canal of 5 different sealers used in combination with softened gutta-percha cones.

Methods: Fifty-two single-rooted teeth were prepared and filled with 5 different sealers and softened gutta-percha cones.