Penetration depth of monomer systems into acrylic resin denture teeth used as pontics.

Statement Of Problem: The ways of softening and dissolving the surface of acrylic resin denture teeth need to be specified to obtain more durable prosthetic treatments that include resin denture teeth.

Purpose: The purpose of this study was to analyze the penetration depth of 4 monomer systems applied during different exposure times on the acrylic resin denture teeth used as pontics of directly fabricated fiber-reinforced composite fixed dental prostheses. The penetration depth contributes to the adhesion of the tooth to the adhesive resin.

Remineralisation properties of innovative light-curable resin-based dental materials containing bioactive micro-fillers.

Innovative dental restorative materials should be highly bioactive to induce therapeutic effects at the bonding interface during intimate contact with biological fluids. This study aimed at evaluating the remineralisation properties of innovative light-curable resin-based dental materials containing bioactive calcium-phosphosilicates micro-fillers. The apatite formation ability was assessed by ATR-FTIR, XRD, calcium-chelation dye-assisted confocal microscopy (CLSM) and SEM analysis after soaking in SBF.

Experimental etch-and-rinse adhesives doped with bioactive calcium silicate-based micro-fillers to generate therapeutic resin-dentin interfaces.

Objectives: This study aimed at evaluating the therapeutic bioactive effects on the bond strength of three experimental bonding agents containing modified Portland cement-based micro-fillers applied to acid-etched dentin and submitted to aging in simulated body fluid solution (SBS). Confocal laser (CLSM) and scanning electron microscopy (SEM) were also performed.

Methods: A type-I ordinary Portland cement was tailored using different compounds such as sodium-calcium-aluminum-magnesium silicate hydroxide (HOPC), aluminum-magnesium-carbonate hydroxide hydrates (HCPMM) and titanium oxide (HPCTO) to create three bioactive micro-fillers.

Prevention of water contamination of ethanol-saturated dentin and hydrophobic hybrid layers.

Purpose: This in vitro study evaluated the amount and distribution of outward fluid flow that occurred when an experimental etch-and-rinse hydrophobic adhesive was applied to ethanol-saturated dentin before and after oxalate pretreatment.

Materials And Methods: Measurements of dentin permeability were performed under a constant pulpal pressure of 20 cm H2O in deep and middle dentin. A lucifer yellow solution was placed in the pulp chamber to determine the distribution of the water contamination of the hybrid layers.

Propionibacterium acidifaciens sp. nov., isolated from the human mouth.

Three strains of anaerobic, pleomorphic, Gram-positive-staining bacilli, which were isolated from human carious dentine, were subjected to a comprehensive range of phenotypic and genotypic tests and were found to comprise a homogeneous group. The strains were saccharolytic and produced acetic and propionic acids in large amounts, and succinic acid in moderate amounts, as the end products of fermentation. 16S rRNA gene and RpoB protein sequence analyses revealed that the strains constituted a novel group within the genus Propionibacterium, most closely related to Propionibacterium australiense but sharing only 8 % DNA-DNA relatedness with the type strain of that species.

Early markers of regeneration following ductal ligation in rat submandibular gland.

Rat submandibular glands can recover their function and secretory protein content following ductal ligation-induced atrophy. Morphological studies have established that following ligation, deligation of the gland allows the regeneration of new salivary gland tissue. However, little is known about changes happening during early regeneration following intra-oral duct ligation, which does not damage the parasympathetic nerves.

Rapid assessment of blood pressure in the obstetric day unit using Microlife MaM technology.

Objective: To compare MaM technology with current methods of assessing blood pressure (BP) over time on the obstetric day unit.

Background: It is recommended that the average of repeated measures is used to confirm hypertension in pregnancy. The Microlife 3AC1 is a validated oscillometric device featuring "MaM" mode using the average of at least 3 BP readings 15 seconds apart.

Medical students' perceptions in relation to ethnicity and gender: a qualitative study.

Background: The British medical student population has undergone rapid diversification over the last decades. This study focuses on medical students' views about their experiences in relation to ethnicity and gender during their undergraduate training within the context of the hidden curriculum in one British medical school as part of a wider qualitative research project into undergraduate medical education.

Method: We interviewed 36 undergraduate medical students in one British Medical School, across all five years of training using a semi-structured interview schedule.

Assessing the effectiveness and acceptability of interprofessional palliative care education.

Interprofessional education in health care in general and palliative care has been the focus of increasing attention in recent years. However, there is still controversy about its outcomes and few courses have been evaluated. The aims of this evaluation were to explore (1) the career progression of former students who attended an interprofessional MSc in palliative care; (2) the activities former students were engaged in as a result of attending the course; and (3) the experience of attending an interprofessional postgraduate course in palliative care.

Dental transposition as a disorder of genetic origin.

A sample of 85 dental transpositions in 75 subjects (27 male, 48 female; mean age at diagnosis 12.25 years) involving both maxillary and mandibular arches was analysed using dental panoramic radiographs and clinical records. Transposition affected the maxillary dentition (76 per cent) more frequently than the mandibular dentition (24 per cent).

Novel compound heterozygous nonsense mutations in the hairless gene causing atrichia with papular lesions.

Background: Atrichia with papular lesions (APL) is a rare autosomal recessive condition resulting from mutations in the hairless (HR) gene.

Objective: In the present study, we investigated the molecular basis of APL in a non-consanguineous Korean family.

Methods: Direct automated DNA sequencing of the HR gene and restriction digestion analysis were used to identify and confirm the mutation in our proband.

Prenatal diagnosis of Herlitz junctional epidermolysis bullosa in nonidentical twins.

Advances in molecular diagnostics have led to the feasibility of DNA-based prenatal testing in families at risk for recurrence of severe forms of both dystrophic and junctional epidermolysis bullosa. In this report, we describe prenatal testing in a woman who previously had a child affected with Herlitz junctional epidermolysis bullosa. However, in her second pregnancy, she was found to have dichorionic diamniotic twins.

Translational benefits from research on rare genodermatoses.

Significant new discoveries about many of the genodermatoses have been made recently through an improved knowledge of the human genome, advances in molecular screening strategies and also through more comprehensive Internet DNA databases. By 2003, over 350 single gene skin disorders had been characterized at a molecular level. These new data provide more detailed information for patients, allow for more accurate diagnoses, and help improve genetic counselling.