Tunneling resistance model for piezoresistive carbon nanotube polymer composites.

Carbon nanotube (CNT) polymer composites exhibit outstanding electrical conductivity that enables a myriad of sensing and actuation applications. Highly sensitive strain sensors can be realized through piezoresistivity in which a resistance change is induced by mechanical strains. Tunneling conduction between CNTs in close proximity is a major mechanism contributing to the overall piezoresistivity of the CNT network, and is sensitive to the separation distance, lattice registry and the orbital overlap of the interacting CNTs.

Three-year prospective clinical performance of a one-step self-etch adhesive and a nanofiller hybrid resin composite in Class V lesions.

Purpose: This 3-year prospective clinical study evaluated the clinical performance of a one-step self-etching adhesive (Futurabond NR) in combination with a nanohybrid composite (Grandio) for the treatment of different Class V cavities.

Methods: 122 restorations were placed in 42 patients (mean age of 54 +/- 13.2 years) evaluated according to modified Ryge-criteria at baseline, 6 months, 1, 2 and 3 years.

Identification and characterization of CaApe2--a neutral arginine/alanine/leucine-specific metallo-aminopeptidase from Candida albicans.

The proteolytic potential of the pathogenic fungus Candida albicans was evaluated by the identification and functional characterization of a peptidolytic enzyme isolated from the cell wall of the microorganism. Determination of basic structural and kinetic data identified a neutral arginine/alanine/leucine-specific metallo-aminopeptidase of unknown function termed CaApe2, which is encoded by ORF CaO19.5197 (GenBank RefSeq XM_705313).

[Restoration of Class V cavities with the Ormocer-based filling system Admira].

The aim of this study was to evaluate the clinical effectiveness of an Ormocer-based restorative system for treatment of mixed carious and non-carious class V cavities. 70 restorations in 25 patients were placed with the condensable material Admira (group 1). In a second group of eight patients, the treatment of 25 cavities took place with the flowable material Admira Flow in combination with composite-bonded to-flowable technique or with the flowable material alone.

[Controlled clinical study of the anterior composite-adhesive system Point 4/OptiBond Solo Plus].

A wide variety of presently sold composites exhibit a large diverse range of colors and yield the desired esthetic result by the "Chameleon Effect" and by the application of a thin layer technique. The present clinical trial of the ultra-small-particle-hybrid composite Point 4 with its dentin adhesive OptiBond Solo Plus just reached the one-year evaluation. Of the originally applied 73 restorations of anterior teeth in the classes III to V, 62 could be re-examined after half a year and 60 after one year according to an examination scheme by Lutz et al.