The purpose of this investigation was to measure the abilities Pseudomonas aeruginosa and Staphylococcus epidermidis strains adhere two hydrogel lens materials effect a protein-coated surface on number adhered bacteria.Proteins absorbed contact lenses during sleep were extracted, subjected sodium dodecylsulphate polyacrylamide gel electrophoresis (SDS-PAGE), probed for presence albumin. Bacterial adhesion measured by counting bacteria adherent coated in vitro increasing concentrations...

SUMMARY: Quantitative studies have been carried out on the survival of bacteria drying from frozen state. Attention has confined mainly to one species vegetative bacteria, viz. Bucterium coli, which several different strains were examined. When suspended in a phosphate buffer (pH 7·6) and dried state (−35), it was found that percentage organisms surviving varied widely with strain used. With given strain, tht well-defined relationship existed between concentration suspension before viable...

SUMMARY: By direct observation of individual organisms in a micro-culture chamber and by viable plate counts, study has been made the function sugar/colloid mixtures promoting survival Gram-negative bacteria on drying. The high death rate after drying sugar alone was due mainly to cell-wall damage caused during rehydration temporary osmotic pressure set up within cell, leading formation spheroplasts not capable division. Spheroplast largely prevented greatly enhanced controlled rehydration,...

Excessive material thinning has been observed in the production of custom-made mouthguards a number studies, due to anomalies that may lead such thinning. This study investigated patterns when anterior angulation dental model was increased during thermoforming process.A total 60 samples mouthguard blanks were thermoformed on identical maxillary models under four inclination conditions (n = 4 × 15): control 0, 15, 30 and 45°. Each sample measured, using an electronic calliper gauge at three...

Mouthguard retention could potentially increase an athlete's motivation to wear the device, due potential improvements in physical comfort. The aim of this study was examine retentive properties selected customised mouthguard designs, during normal conditions (dry) and within presence artificial saliva (wet). Additionally, correlation between thickness investigated.Six different custom designs (MG1-MG6) reported previous studies, were pressure-formed with 2 4 mm blanks accordingly. Thickness...

The aim of this study was to measure the finished thickness a single identical 4-mm EVA mouthguard model from large fabricated sample group and evaluate degree material thinning variations during fabrication process.Twenty boxes were distributed dental technician participants, each containing five duplicated models (n = 100), alongside 5 × 4 mm blanks questionnaire. mouthguards measured using electronic callipers (resolution: ±0.01 mm) at three specific points. thickest thinnest examined CT...

Abstract Denture soft‐lining materials are exposed to the oral cavity for long periods and in continuous contact with saliva, subject inhibition of liquid molecules, susceptible colonization by microorganisms. The opportunist yeast Candida albicans is particular concern this context, being associated denture plaque denture‐related stomatitis. In study, penetration C. into an experimental silicone elastomer material was investigated under batch culture conditions. A model “denture plaque“...

Silicone rubber is widely used in the construction of medical devices that can provide an essential role treatment human illness. However, subsequent microbial colonization silicone result clinical infection or device failure. The objective this study was to determine effectiveness a novel silane-treated inhibiting adherence and material penetration. Test prepared by combination argon plasma discharge fluorinated silane coupling. Chemicophysical changes were then confirmed X-ray...

A killer strain of Saccharomyces cerevisiae has been isolated from batch fermented beer which had attenuated poorly and possessed an unpleasant phenolic (clove-like) aroma.

Summary An essential oil (EO) blend has been identified that provides a broad spectrum potent antimicrobial effect. Adsorption of the EO onto porous silicate materials (Rockwood Additives: Laponite® B, RD and Fulcat® 800) analysed it was found organically modified with dihydrogenated tallow dimethyl ammonium chloride (2HT2M) at 50% cation exchange capacity gave highest levels adsorption. The 2HT2M adsorbed added to polymer produce an polymer. adsorption done achieve controlled release...

Abstract Summary: Organically modified montmorillonite (o‐MMT) in a room temperature addition cured silicone elastomer (PDMS) has been found to control the release of 2,4,2′‐trichloro‐2′‐hydroxy diphenylether (triclosan (TCS)) from composite. The effect o‐MMT gallery polarity on controlled was investigated via different intercalants and interaction triclosan with using flow micro‐calorimetry (FMC). latter not be universal predictor activity composite as combined TCS PDMS interactions...

Abstract Some sports participants are often reluctant to wear a mouthguard due issues with comfort, breathing and communication. However, there is limited evidence that investigates the use of custom‐made mouthguards variations in design as key factors minimise these issues. Therefore, aim this study was examine effect on cardiopulmonary function, exercise performance perception comfort rugby union players. Fourteen players (aged 20.2 ± 1.19 years) were recruited undertake rugby‐specific...