Mechanical properties, and biocompatibility assessment of biomimetic dual layered keratin/ hydroxyapatite scaffolds.

A novel biomimetic dual layered keratin/hydroxyapatite (keratin/HA) scaffold was designed using iterative freeze-drying technique. The prepared scaffolds were studied using several analytical techniques to better understand the biological, structural, and mechanical properties. The developed multilayered, interconnected, porous keratin scaffold with different hydroxyapatite (HA) content in the outer and inner layer, mimics the inherent gradient structure of alveolar bone.

Micro-CT Evaluation of Spontaneous Apexification of an Immature Tooth following Trauma.

This case reports on the micro-computerised tomography (CT) images of a periapical calcified dome following spontaneous apexification as a subsequence of trauma. An immature, maxillary central incisor was found to be non-vital one month following trauma. The tooth had minimal signs of structural damage; however, there was radiographic evidence of spontaneous apexification.

Investigation of a Novel Injectable Chitosan Oligosaccharide-Bovine Hydroxyapatite Hybrid Dental Biocomposite for the Purposes of Conservative Pulp Therapy.

This study aimed to develop injectable chitosan oligosaccharide (COS) and bovine hydroxyapatite (BHA) hybrid biocomposites, and characterise their physiochemical properties for use as a dental pulp-capping material. The COS powder was prepared from chitosan through hydrolytic reactions and then dissolved in 0.2% acetic acid to create a solution.

Presentation and subsequent care of dental injuries sustained by New Zealand adults.

Background/aims: Injuries to permanent teeth are common and can have lasting effects, but knowledge of their consequences is deficient because there is a lack of information from longitudinal follow-up studies of adult populations. The aim of this study was to use routinely collected adult dental trauma data from New Zealand's no-fault, Government-run social insurance scheme-the Accident Compensation Corporation-to investigate the presentation and subsequent care of dental injuries sustained by adults.

Methods: Cross-sectional analysis of all new dental injuries recorded during 2008 was followed by prospective analysis of all treatment claimed in the following five years for all new injuries recorded in June 2008 for adults aged 18+ years.

Enterococcus faecalis V583 cell membrane protein expression to alkaline stress.

Enterococcus faecalis is able to adapt to alkaline conditions and is commonly recovered from teeth in which endodontic treatment has failed. The role that E. faecalis membrane proteins play in survival strategies to extreme alkaline conditions is unclear.