introduction: considering the importance of prevention in periodontal diseases and the important role of aggregatibacter actinomycetemcomitans in induction and progression of these diseases, the aim of the present in vitro study was to compare the antimicrobial effects of chlorhexidine digluconate (chx), curcumin and light-emitting diode (led) laser, on this bacterium. methods: antimicrobial ac...

conservation of deciduous teeth with pulp alterations caused by caries or trauma is a major therapeutic challenge in pediatric dentistry. it is essential that the sanitizers used in root canal procedures perform well in eliminating bacteria. antimicrobial photodynamic therapy (pdt) is an emerging and promising adjuvant therapy for endodontic treatment in an attempt to eliminate microorganisms p...

introduction: the aim of the present study was to evaluate the effect of photodynamic therapy in the treatment of experimental corneal neovascularization (nv) with benzoporphyrin derivative (bpd). methods: one group was considered as control (n=6 eyes) then, corneal nv was induced in 30 new zealand male rabbits (n=60 eyes) by placing 7.0 silk sutures at midstromal depth approximately1mm from th...

the main goal in endodontic treatment is to eradicate or at least reduce intraradicular microbial population to levels that are more compatible with periapical lesions healing process. since endodontic infections are polymicrobial in nature, intraradicular survival of endodontic microbiota and their pathogenic properties are influenced by a combination of their virulence factors. the purpose of...

Comparison and evaluation of modelled and GOME measurement derived tropospheric NO2 columns over Western and Eastern Europe I. B. Konovalov , M. Beekmann, R. Vautard, J. P. Burrows, A. Richter, H. Nüß, and N. Elansky Institute of Applied Physics, Russian Academy of Sciences, Nizhniy Novgorod, Russia Service d’Aéronomie, Institut Pierre Simon Laplace, Paris, France Laboratoire de Météorogie Dyna...

We develop an accurate finite-time scaling analysis of the angular width of the coherent backscattering (CBS) peak for waves propagating in 3D random media. Applying this method to ultracold atoms in optical speckle potentials, we show how to determine both the mobility edge and the critical exponent of the Anderson transition from the temporal behavior of the CBS width. Our method could be use...

Coherent backscattering (CBS) of light in random media has been previously investigated by use of coherent light sources. Here we report a novel method of CBS measurement that combines low spatial coherence, broadband illumination, and spectrally resolved detection. We show that low spatial coherence illumination leads to an anomalously broad CBS peak and a dramatic speckle reduction; the latte...

introduction: the topical and intradermal photodynamic therapy (pdt) effect of methylene blue (mb) using light-emitting diode (led) as light source (mb/led-pdt) in the treatment of lesions of american cutaneous leishmaniasis (acl) caused by leishmania braziliensis in hamsters were investigated. methods: hamsters were infected in the footpad with 4×107 promastigotes of l. braziliensis and divide...

background and aims. considering the importance of disinfecting dentin after cavity preparation and the possible effect of disinfection methods on induction of various reactions between the tooth structure and the adhesive restorative material, the aim of the present study was to evaluate microleakage of composite resin restorations after disinfecting the prepared dentin surface with nd:yag and...