Mineral Trioxide Aggregate and Diluted Formocresol Pulpotomy: Prospective and Retrospective Study Outcomes.

Unlabelled: Mineral Trioxide Aggregate (MTA) has been used in many endodontic procedures with success. We hypothesized that MTA as a pulpotomy medicament elicits outcomes no different than that of the diluted formocresol (DFC).

Purpose: The purpose of this study was to compare the outcomes of grey MTA and DFC in primary molar pulpotomies at a teaching institution and a pediatric dental practice.

Sphingopyxis panaciterrulae sp. nov., isolated from soil of a ginseng field.

A Gram-negative, rod-shaped, motile bacterium was isolated from the soil of a ginseng field in Daejeon, South Korea, and characterized in order to determine its taxonomic position. Phylogenetic analysis based on 16S rRNA gene sequence analysis revealed that strain DCY34(T) belonged to the family Sphingomonadaceae, and the highest degree of sequence similarity was found with Sphingopyxis witflariensis W-50(T) (97.1 %), Sphingopyxis ginsengisoli Gsoil 250(T) (97.

Pyriform spidroin 1, a novel member of the silk gene family that anchors dragline silk fibers in attachment discs of the black widow spider, Latrodectus hesperus.

Spiders spin high performance threads that have diverse mechanical properties for specific biological applications. To better understand the molecular mechanism by which spiders anchor their threads to a solid support, we solubilized the attachment discs from black widow spiders and performed in-solution tryptic digests followed by MS/MS analysis to identify novel peptides derived from glue silks. Combining matrix-assisted laser desorption ionization tandem time-of-flight mass spectrometry and cDNA library screening, we isolated a novel member of the silk gene family called pysp1 and demonstrate that its protein product is assembled into the attachment disc silks.