A5061989412- Oral microbiology and periodontitis research
- Dental materials and restorations
- Endodontics and Root Canal Treatments
- Probiotics and Fermented Foods
- Dental Implant Techniques and Outcomes
- Antimicrobial Resistance in Staphylococcus
- Dental Research and COVID-19
- Rabies epidemiology and control
- Streptococcal Infections and Treatments
- Forensic and Genetic Research
- Bacterial Identification and Susceptibility Testing
- Laser Applications in Dentistry and Medicine
- Genomics and Phylogenetic Studies
- Scientific and Engineering Research Topics
- Oral Health Pathology and Treatment
- Dental Radiography and Imaging
- Nanoparticles: synthesis and applications
- Oral health in cancer treatment
- Dental Erosion and Treatment
- Antimicrobial Peptides and Activities
- Forensic Anthropology and Bioarchaeology Studies
- Immune Response and Inflammation
- Dental Anxiety and Anesthesia Techniques
- Muscle and Compartmental Disorders
- Bacterial biofilms and quorum sensing
University of Otago
2015-2025
Fisheries and Oceans Canada
2018
Bedford Institute of Oceanography
2018
Dalhousie University
2018
Walsh University
2011
Augusta University
1994-2001
University of Minnesota
1991
University of California, Davis
1972-1973
Histochemical evaluation of muscles from piglets, lambs and calves allows the conclusion that in these species, as was previously reported for chick muscle (Ashmore Doerr, 1971), there are two basic fiber types. These have been termed a β based on myosin ATPase activity. Initially, fibers "red", but capacity to transform an aerobic state metabolism (aR) anerobic (aW). remain "red" throughout their lifespan. Transformation is primarily concerned with changes energy-producing enzymes,...
"DARK-CUTTING" meat commonly results when cattle are subjected to prolonged stress just prior slaughter. Subcutaneous injections of epinephrine administered for 24 48 hr. slaughter has been shown mimic the condition produced by natural conditions. Epinephrine acts accelerate glycogen metabolism in muscle tissue. Low stores at preclude development a desirable pH after death. When remains elevated carcass, mitochondrial respiration high and myoglobin is deoxygenated. A dark red color results....
Parmar D, Hauman CHJ, Leichter JW, McNaughton A, Tompkins GR. Bacterial localization and viability assessment in human ex vivo dentinal tubules by fluorescence confocal laser scanning microscopy. International Endodontic Journal, 44, 644–651, 2011. Aim To develop a convenient method for the quantification of live dead bacteria mineralized tubules. Methodology The roots from single-rooted teeth (n = 12) were infected with Enterococcus faecalis V583 either treated calcium hydroxide paste or...
A novel silver nanoparticle (AgNP) formulation was developed as a targeted application for the disinfection of carious dentine. Silver nitrate (AgNO 3 ) chemically reduced using sodium borohydrate (NaBH 4 in presence dodecyl sulfate (SDS) to form micelle aggregate structures containing monodisperse 6.7- 9.2-nm stabilized AgNPs. AgNPs were characterized by measurement electrical conductivity and dynamic light scattering, scanning electron microscopy, transmission inductively coupled plasma...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 597:115-135 (2018) - DOI: https://doi.org/10.3354/meps12589 Sponge assemblages and predicted archetypes in eastern Canadian Arctic Francisco Javier Murillo1,*, Ellen Kenchington1, Gabrielle Tompkins1,2, Lindsay Beazley1, Emily Baker1, Anders Knudby3, Wojciech Walkusz4 1Department of Fisheries Oceans, Bedford...
To establish how oral bacteria are related to cough sensitivity and pneumonia in a clinical stroke population.Stroke patients at risk of colonisation by respiratory pathogens due, part, sudden discontinuation effective hygiene. When combined with reduced reflex sensitivity, aspiration contaminated oropharyngeal contents can lead pneumonia. Relationships between bacteria, have not been established.A total 102 acute underwent saliva sampling testing admission hospital, discharge one month. A...
The focus of this symposium was to present new information on the morphogenesis Candida albicans, particularly how it relates signal transduction pathways and other genes involved in regulation morphogenesis. In addition, we discuss role adherence colonization oral cavity by organism mannan as an adhesin that recognizes human red blood cell. C. albicans utilizes at least two regulate its conversion from a yeast form filamentous growth (hyphae). One these is similar Saccharomyces cerevisiae...
The production of streptocins STH(1) and STH(2) by Streptococcus gordonii DL1 (Challis) is directly controlled the competence regulon, which requires intact comR comAB loci. streptocin (sth) locus comprises two functional genes, sthA sthB. Whereas activity alone, depends on both genes.
Background . Intraoral adjustment and polishing of dental ceramics often affect their surface characteristics, promoting increased roughness consequent biofilm growth. This study correlated to development with four commercially available ceramic materials. Methods Four materials (Vita Enamic®, Lava™ Ultimate, Vitablocs Mark II, Wieland Reflex®) were prepared as per manufacturer instructions. Seventeen specimens each material adjusted polished simulate clinical intraoral procedures another...
Biofilm accumulation can lead to enamel decalcification, gingivitis, and periodontal disease. The objective of this study was compare the biofilm under in vivo conditions consequent ex acid production demineralization around material used for "off-the-shelf" conventional CAD/CAM orthodontics bands. design required both vitro approaches. An experimental model utilized combine exposure an formed cariogenic achieve objective. Twenty-one consenting participants took part study. Participants wore...
Several recent studies have investigated the association between interleukin-1 genotype and periodontitis in clinical samples, where generalizability is an issue. The aim of this study was to investigate adult IL-1 a population-based sample 26-year-olds. Based on probing depth (PD) measurements, participants were divided into three disease groups: "Severe" (1+ teeth with 5+mm PD; N = 25), "Moderate" (2+ 4+mm 36), "Controls" (the remainder ; 800). "periodontitis-associated genotype" (PAG;...
Background . Topical application of manuka honey is effective in the treatment burns and soft-tissue infections. The aim this study was to assess antibacterial activity against plaque-associated bacteria vitro order evaluate potential as an adjunct periodontal treatment. Materials Methods minimum bacteriostatic bactericidal concentrations (MIC MBC) were compared those white clover a variety bacteria, at natural neutral pH. Dissolved calcium measured following incubation honeys with...
A radioligand assay was designed to detect and compare specific hemin binding by the periodontal anaerobic black-pigmenting bacteria (BPB) Porphyromonas gingivalis Prevotella intermedia. The included physiological concentrations of hemin-binding protein rabbit serum albumin (RSA) prevent self-aggregation nonspecific interaction with cellular components. Under these conditions, heme-starved P. intermedia cells (two strains) expressed a single site species (4,100 4,600 sites/cell) dissociation...
To assess the amount of contamination remaining on used healing abutments after autoclaving and to compare effectiveness two additional decontamination methods.After autoclaving, a total 120 were divided equally into three groups: only (group 1); air-flow polishing (Master Piezon, EMS) using erythritol powder (AIR-FLOW PLUS, 2); sodium hypochlorite (NaOCl; 25 g/L) treatment 3). Residual contaminants stained Phloxine B (400 g/mL), photographed light microscope with digital capture system...
Bite mark injuries often feature in violent crimes. Conventional morphometric methods for the forensic analysis of bite marks involve elements subjective interpretation that threaten credibility this field. Human DNA recovered from has highest evidentiary value, however recovery can be compromised by salivary components. This study assessed feasibility matching bacterial sequences amplified experimental to those obtained teeth responsible, with aim evaluating capability three genomic regions...
This study assessed, for forensic purposes, the feasibility of genotypically matching oral streptococci recovered from recent human bite marks with those teeth biter.Streptococci were isolated incisors eight volunteers. Arbitrarily primed PCR (AP-PCR) distinguished 106 streptococcal genotypes among participants, each harbouring at least distinct strains. In a crime simulation, sample an experimental mark was analysed by experimenter unaware its origin. The bacteria unambiguously matched to...
Objectives The objective of this scoping review was to map evidence electrolysed oxidising water (EOW) as a biocide for dental applications relevance older people and identify research gaps. Background EOW is an emerging, “green,” cost‐effective biocide. There are no reviews on the landscape either antiseptic or disinfectant in healthcare its suitability oral people. Materials Methods follows PRISMA Extension Scoping Reviews (PRISMA‐ScR) guidelines. Database searches (Google Scholar, PubMed,...