Efficacy analysis of application of reversible occlusal therapy in treating temporomandibular dysfunction - meta-analysis

Psihološka nelagodnost, fizičke i radne nesposobnosti i funkcionalna ograničenja orofacijalnog sistema imaju veliki uticaj na svakodnevni život pacijenata sa temporomandibularnim disfunkcijama (TMD). Cilj meta-analize je bio da se utvrde kratkoročni i dugoročni efekti stabilizacionog splinta (SS) u lečenju TMD-a, i da se identifikuju faktori koji utiču na njegovu efikasnost. Metod Pretraživanje se vršilo u elektronskim bazama MEDLINE, Web of Science i EMBASE. Kriterijum za pretraživanja bile su randomizovane kontrolisane studije koje su poredile SS prema različitim kontrolnim grupama: ne-okludirajući splint, oralni okluzalni aparati, fizikalna terapija, bihevioralna terapija, minimalni tretmani i bez tretmana. Sinteza podataka vršena je pomoću modela slučajnog efekta. Mere efekta za primarne i sekundarne ishode bili su unakrsni odnos šanse (UOŠ), ili standardizovana prosečna razlika sa 95% intervalom poverenja (IP). Podgrupne analize vršene su na osnovu korišćenja Istraživačkih kriterijuma za dijagnostikovanje TMD (IKD/TMD) u primarnim studijama, prema poreklu TMD-a, kao i prema pojedinačnim terapijskim modalitetima. Jačina dokaza ocenjivana je pomoću GRADE sistema. Analizom senzitivnosti pokazan je značaj uvođenja standardizovanog dijagnostičkog kriterijuma u ocenjivanju ispitivanog tretmana. Meta-regresija je vršena radi utvrđivanja nezavisnih faktora koji utiču na efekat SS. Rezultati 37 randomizovanih kontrolisanih studija su uključene u meta-analizu. SS je pokazao sveukupni statistički značajan efekat na redukciju bola (UOŠ 2,08; p=0,01) i smanjenje intenziteta bola (Std. prosečna razlika -0,33; p=0,02) u kratkoročnom periodu...Psychological discomfort, physical disability and functional limitations of the orofacial system have a major impact on everyday life of patients with temporomandibular disorders (TMDs). In this study we sought to determine short and long term effects of stabilization splint (SS) in treatment of TMDs, and to identify factors influencing its efficacy. Methods Search was conducted in the electronic databases MEDLINE, Web of Science and EMBASE. The search criteria were randomized controlled trials that compared SS to various control groups: non-occluding splint, occlusal oral appliances, physiotherapy, behavioral therapy, minimal treatment and no treatment. Synthesis of data was performed using the random effects model. The effect estimates were expressed as odds ratio (OR) or standardized mean difference (SMD) with 95% confidence interval. Subgroup analyses were carried out according to the use of Research Diagnostic Criteria (RDC/TMD) in primary studies, origin of TMDs, and individual therapeutic modalities. Strength of evidence was assessed by GRADE system. Sensitivity analysis showed the importance of introducing standardized diagnostic criteria in the evaluation of the observed treatments. Meta-regression was performed to determine the independent factors which influence the effect of SS. Results Thirty seven eligible RCTs were included in meta-analysis. In short term, SS presented positive overall effect on pain reduction (OR 2.08; p=0.01) and pain intensity (SMD - 0.33; p=0.02). Subgroup analyses confirmed SS effect in studies that used RDC/TMD..

A spectroscopic investigation of stabilized dc argon arc by power modulation technique

Spatial distribution of delayed responses of argon and hydrogen spectral line and continuum intensity to square power modulation was investigated in order to get better insight into the processes occurring in argon dc arc plasma. The power was abruptly changed between stationary values, 9 and 3.5 A. For these currents steady state radial distributions of electron number density, temperature and emission intensity were measured. On part of the discharge, radial profiles the power drop and the power jump are both accompanied by intensity peaks which may be explained by displacement of the arc core axis and change in the arc core diameter during the power modulation.Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 24-28 September 200

Identification of Agrobacterium vitis as a causal agent of grapevine crown gall in Serbia

In 2010, a serious outbreak of crown gall disease was observed on grapevines (Vitis vinifera L. cv. Cabernet Sauvignon) in several commercial vineyards located in the Vojvodina province, Serbia. Bacteria were isolated from the young tumor tissue on nonselective YMA medium and five representative strains were selected for further identification. Tumorigenic (Ti) plasmid was detected in all strains by PCR using primers designed to amplify the virC pathogenicity gene, producing a 414-bp PCR product. The strains were identified as Agrobacterium vitis using differential physiological and biochemical tests, and a multiplex PCR assay targeting 23S rRNA gene sequences. In the pathogenicity assay, all strains induced characteristic symptoms on inoculated tomato and grapevine plants. They were less virulent on tomato plants in comparison to the reference strains of A. tumefaciens and A. vitis. [Ministarstva nauke Republike Srbije, br. III46008: Development of integrated management of harmful organisms in plant production in order to overcome resistance and to improve food quality and safety

Synthesis, physico-chemical characterization and biological activity of 2-aminobenzimidazole complexes with different metal ions

Complexes of 2-aminobenzimidazole (L) with nitrates of cobalt(II) nickel(II), copper (II), zinc(II) and silver(I) were synthesized. The molar ratio metal:ligand in the reaction of the complex formation was 1:2. It should be noticed, that the reaction of all the metal salts yielded bis(ligand) complexes of the general formula M(L)2(NO3)2 × nH2O (M=Co, Ni Cu, Zn or Ag; n=0, 1, 2 or 6). The complexes were characterized by elemental analysis of the metal, molar conductivity, magnetic susceptibility measurements and IR spectra. Co(II), Ni(II) and Cu(II) complexes behave as non-electrolytes, whilst Zn(II) and Ag(I) are 1:1 electrolytes. Cu(II) complex has a square-planar stereochemistry, Ag(I) complex is linear, whilst the Co(II), Ni(II) and Zn(II) complexes have a tetrahedral configuration. In all the complexes ligand is coordinated by participation of the pyridine nitrogen of the benzimidazole ring. The antimicrobial activity of the ligand and its complexes against Pseudomonas aeruginosa, Bacillus sp. Staphylococcus aureus and Saccharomyces cerevisiae was investigated. The effect of metal on the ligand antimicrobial activity is discussed

Determination of nickel, cobalt and chromium in a soda-lime glass by using LIBS based on pulses IR laser

This work presents a study of the applicability of laser-induced breakdown spectroscopy (LIBS), based on Infrared Transversally Excited Atmospheric CO2 pulsed laser (TEA CO2), to determine nickel, cobalt, and chromium in a window glass samples. Estimated limits of detection (LODs) for Ni, Co, and Cr, were 2.1, 3.2, and 0.4 ppm, respectively. In addition, two main plasma parameters, electron number density and temperature, were determined to characterize the laser-induced plasma. The electron number density (Ne) was determined from the measured Stark width of the Al I 396.15 nm line, and the intensity ratio of two atomic iron lines (342.71 nm and 344.06 nm) was used to determine the excitation temperature (Texc). The obtained values were Ne= 8.3·1016 cm-3 and Texc= 7700 K.The book of abstracts available at: [http://www.socphyschemserb.org/media/physical-chemistry-2022/abstracts.pdf

An simple technique for synthesis of carbon nanotubes by underwater arc plasma

Applicable, low cost technique for the production of carbon nanotubes by underwater (or solution) AC arc plasma discharge is described. The growth takes place in an AC arc in water solution between graphite electrodes.Physical chemistry 2006 : 8th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 26-29 September 200

Study of a long term processes in d.c. argon arc plasma by square power modulation with variable low current period

U-shaped d.c. argon stabilized arc with aerosol supply was investigated by current modulation between 9 and 3 A level and low current period lasting from 0.05 to 40 ms. The variable low current period has great influence on delayed line intensity response that provides information about a recombination and transport processes in plasma. The obtained results indicate that plasma slowly reaches stationary state and that processes related to changes in atom concentration play important role. Character of temporal responses strongly depends on first ionization energy of analyte.Physical chemistry 2004 : 7th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 21-23 September 200

Optical spectroscopy of plasma induced by irradiation of animal bone with TEA CO2 laser

The application of laser-induced breakdown spectroscopy (LIBS) for the elemental analysis of pig shoulder bone samples is reported. Measurements were performed using a compact laboratory-made TEA CO2 laser with low pulse energy. The recorded spectra consisted of well-defined lines of atoms and single charged ions of Ca, Mg, P, and other constituent elements, with a good signal-to-noise ratio suitable for spectrochemical analysis. Based on the ICP quantitative analysis of the bone sample, the limits of detection of LIBS analysis were estimated for Mg (16 ppm) and Na (940 ppm). Plasma parameters, temperature, and electron number density were determined by measuring Stark widths and relative intensities of the C and Mg ionic and atomic spectral lines.The book of abstracts available at: [http://www.socphyschemserb.org/media/physical-chemistry-2021/abstracts.pdf

Optical emission measurement of plasma generated by infrared laser beam with Cu target

A study of visible (VIS) optical emission of Cu-plasma, induced by infrared (IR) Transversely Excited Atmospheric (TEA) CO2 laser, was carried out. Irradiation of the Cu-target with laser fluence of 8.2 J/cm2 at low air pressure resulted in the appearance of intensive plasma over the target. The type, number and intensity of the emission Cu-spectral lines strongly depend on the observing plasma location with respect to the target surface. “Primary” plasma gives the largest number of spectral lines. Also, in contrary to other plasma locations, some ionic lines were detected from this region. “Secondary” plasma, as a rule, gives the atomic lines. This region of plasma is very favourable for possible analytical applications (e.g. quantitative analysis)

An experimental study of radial symmetry deviation in dc argon arc plasma by current modulation technique

A current square modulation technique is used to investigate radial asymmetry of plasma column of argon stabilized direct current U-shaped arc. By monitoring the temporal behavior of spectral line intensities (in a millisecond domain) for various elements, it was observed that nonhomogeneous emission was much more pronounced for current modulated arc plasma compared to the stationary regime plasma. The reason for such behavior, for this as well as for other arc sources, lies in a mode the stream of argon with aerosol is introduced into the arc plasma.Physical chemistry 2006 : 8th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 26-29 September 200