introduction: some dental sealers have neurotoxic effects on neuronaltissues. these effects appear to be mediated through the inhibition of ionic channels. intracellular recording was performed on neuronal cells tocharacterize the underlying ionic mechanisms of neurotoxicity induced by roth 801. materials and methods: experiments were carried out on f1 neuronal soma membrane located in the righ...

AIM To determine whether commonly used endodontic sealers could either induce or increase the release of prostaglandin E2 (PGE2) when in contact with cell types found in the periapical tissues. METHODOLOGY Freshly mixed samples of Roth 801 sealer, Sealapex and ProRoot mineral trioxide aggregate (MTA) were placed in contact with cultured macrophages and fibroblasts for 24 h. The supernatant fr...

introduction the materials used for obturation of root canal system may be extruded through apical foramen into the periapical tissue. therefore, biocompatibility of these materials is very important. the purpose of this study was to evaluate the in vivo biocompatibility of three conventional endodontic sealers: ah26, roth 801, and zoe after their subcutaneous implantation in rats. methods twen...

The purpose of this study was to determine the sealing ability of three different sealers and to compare the sealing ability of three sealers. Thirty single rooted mandibular first premolar teeth were used. The crowns were removed at the cemento -enamel junction and root canals were prepared to a # 35 K-file. The teeth were randomly divided into three groups, A, K and R. Each group consisted of...

Introduction: The materials used for obturation of root canal system may be extruded through apical foramen into the periapical tissue. Therefore, biocompatibility of these materials is very important. The purpose of this study was to evaluate the in vivo biocompatibility of three conventional endodontic sealers: AH26, Roth 801, and ZOE after their subcutaneous implantation in rats. Methods: Tw...

Reversible Bleaching of Chlorophyll in vivo: J. W. Coleman, A. S. Holt, E. Rabinowitch .... ...................... 795 Clot-Retraction Promoting Factor (Retractin) in Platelets and Tissues: S. I. Magalini and M. Stefanini ..... ...................... 796 Inhibition of Aerobic Phosphorylation and Pasteur Reaction by an Adrenal-Cortical Extract: Z. Miller ..... ........................ 797 Tergal...

a w o 3 bstract leven sealers, including Resilon sealer, were mixed ccording to manufacturer’s instructions. Setting times ere determined in both aerobic and anaerobic envionments. Two samples of each sealer were mixed and laced in the following conditions: (a) uncovered in an erobic incubator; (b) covered with a glass cover-slip in he aerobic incubator; (c) covered with phosphate buffred salin...

My research focuses on the computational foundations of intelligent behavior. We develop theories and systems pertaining to intelligent behavior using a unified methodology – at the heart of which is the idea that learning has a central role in intelligence. We attempt to understand the role of learning in supporting intelligent inference and use this understanding to develop systems that learn...

The purpose of this study was to determine the sealing ability of three individual sealers and to compare the sealing ability of these sealers in the presence and absence of smear layer. Total of sixty single rooted mandibular first premolar teeth were used. The crowns were removed at the cementoenamel junction and roots prepared to # 35 K-file. The teeth were randomly divided into two equal gr...