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Search Results: 1 - 10 of 461782 matches for " A - Mogharehabed "
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Anti-Inflamnatey Effect of 15 Percent Benzydamin Mouth Wash on Moderate Periodontits Patients
A - Mogharehabed,S Amin Eskandari
Journal of Isfahan Dental School , 2005,
Abstract: Introduction. The periodontal inflammation is one of the most common oral and dental diseases. Periodontitis is advanced periodontal bacterial infection. At present treatment of this disease is oral hygiene instructions, scaling and root planning, plaque control with different mouth washes and in some cases, periodontal surgery. In this investigation, Benzydamin was used as mouth wash which has anti pain and anesthetic properties. The purpose of this research was to study anti-inflammatory effects of using Benzydamin mouth wash 0.15 percent on moderate periodontitis.Material and Methods. This was a clinical test study, which has been done in Isfahan University (School of Dentistry). Sample included 80 patients, (52 female and 28 male) with an average age of 27 years. Patients who had moderate periodontitis were tested and divided into 40 person group (case and control). In both groups before performing the firt phase of treatment, index of gingival inflammation and bleeding index was determined. In case group, patients were given both oral hygience instructions and oral Bensydamin month wash. In control group only oral hygiene instructions were given to them. After one week, both case and control groups were recalled and once more indexes determined and then average was made. Acording to statistical formulas descriptive statistic and t-tests, curves and tables were made.Results. The mean for bleeding index before clinical test were 2.01 and 1.7 and after clinical test were 1.22 and 1.27 for both case and control groups. These differences between two groups were significant. But the mean for gingival inflamation index before and after clinical test were 2.18, 2.01 and 1.87, 2.03 which in both stages. Their differences were not significant.Discussion. Rsults indicate Benayamin month wash will decrease gingival bleeding and to lesser extend gingival inflamation. In control group, bleeding index was decreased slightly which can be due to oral hygiene instructions.Key words. Moderate periodontitis, Benzydamin hydrochloride 0.15%.
Comparative Evaluation Effectiveness of Er:YAG Lazer, Manual and Ultrasonic Devises in SRP of the Root Surfaces with SEM Method
R - Birang,A Mogharehabed,kh Mostajeran
Journal of Isfahan Dental School , 2006,
Abstract: Introduction: Scaling and root planing is one of the most commonly used procedures during periodontal treatments. Removal of calculus using conventional hand instruments is incomplete and rather time consuming. To find more efficient and less difficult instrumentation method, investigators have proposed lasers as an alternative or adjunct to hand instruments for scaling and root planing. The aim of the present study was to compare the effectiveness of three methods of hand instruments, ultrasonic and Er:YAG laser for scaling & root planing of root surfaces with SEM method.Methods and materials: This was an experimental study and samples included 15 extracted premolars collected from patients with periodontal problem. The teeth were sectioned in two parts vertically. Therefore 30 samples were randomly divided in two groups. In the first group each surface of root from CEJ was divided in two parts. One part was scaled with manual curret and another by Er:YAG laser and third group was cleaned by ultrasonic methods. Another surface was considered as control group. The surface changes were evaluated by SEM in magnification of 50, 400 and 750 by 5 Examiners. Data was analyzed by SPSS program.Results: The findings show that surface roughness is more in control group comparing with three other groups. Besides roughness from the most to the least belong to: ultrasonic group, laser group & manual scaling group. Kruscal-wallis test & Mann-Whitney test showed that there was a significant difference in the amount of surface roughness between manual group & laser group and also between control group & other groups and between manual and ultrasonic group. But there was no significant difference between rate of surface roughness in laser and ultrasounic group.Conclusion: The efficacy of Er:YAG laser for scaling & root planing is not more than manual and ultrasonic instruments the amount of surface roughness created by Er:YAG is more than manual scaling but the difference is not significant comparing to ultrasonic scaling.Key Words: Scaling & root planing, Er:YAG laser, Surface roughness, Ultrasonic scaling, Manual scaling, SEM.
Comparative Evaluation of the Effects of 5% Sodium Fluoride Varnish and Neodymium-Doped Yttrium Aluminium Garnet (Nd:YAG) laser and their Combined Application on Dentin Hypersensitivity Treatment
Ahmad Mogharehabed,Heidar Khademi,Zeinab Abdi Zamharir,Stephane Ayoub Bouraima
Journal of Lasers in Medical Sciences , 2012,
Abstract: INTRODUCTION: Dentin hypersensitivity is one of the most common complications that patients suffer from after periodontal therapies. So far many investigators have used different types of fluoride and laser for treatment of this complication. The aim of this study was to evaluate the effects of 5% sodium fluoride varnish and (Neodymium-Doped Yttrium Aluminium Garnet) Nd:YAG laser and their combined application on dentin hypersensitivity treatment. METHODS: The study is a prospective interventional clinical trial. We selected a group of 9 patients with a total of 60 hypersensitive teeth. Each patient had at least 4 hypersensitive teeth. These 4 teeth were randomly placed in 4 different groups. Group1 didn’t receive any treatment. Group2 was treated with 5% sodium fluoride varnish (A Durashield Company product). Group3 was irradiated with Nd: YAG laser (1w, 20Hz, 120s). Group4 was treated by 5% sodium fluoride varnish and Nd: YAG laser combined (same parameters as group3). The assessment of the patients’ pain was done with cold air blast test (CAB) and visual analyzing scale (VAS) after stimulation using a probe and cold air. Patients’ pain was assessed before and just after treatment, and also 2 hours, 1 week and 2 weeks after treatment. For the assessment of pulp vitality we used the electric pulp test (EPT) at each session. SPSS 11.5 was used to process the results obtained. For the CAB and VAS changes in different groups, two-way repeated-measures ANOVA as well as Post-Hoc-Tukey tests were used. For the comparison of the different treatment groups at each session, one-way ANOVA, Post-Hoc-Tukey and or Mann-Whitney and Kruskal-Wallis tests were used. RESULTS: VAS and CAB scores didn’t show any significant difference between different groups before treatment. Analysis of results obtained with two-way ANOVA test for repeated measures showed significant statistical differences for CAB and VAS scores in all groups between before and after treatment except for CAB score in control group. In the comparison of the fluoride varnish group and laser group alone with fluoride varnish-laser combined group using VAS and CAB scores, we found a significant difference. But we didn’t find any significant difference for the comparison between the varnish fluoride group and the laser group using the same score. CONCLUSION: The use of 5% sodium fluoride varnish and laser for treatment of dentin hypersensitivity is accompanied by a placebo effect. Although it appears that, if we omit the placebo effect, we had an improvement in all 3 treatment groups. But this improvement w
The Spread of Infectious Disease on Network Using Neutrosophic Algebraic Structure  [PDF]
A. Zubairu, A. A. Ibrahim
Open Journal of Discrete Mathematics (OJDM) , 2017, DOI: 10.4236/ojdm.2017.72009
Abstract: Network theory and its associated techniques has tremendous impact in various discipline and research, from computer, engineering, architecture, humanities, social science to system biology. However in recent years epidemiology can be said to utilizes these potentials of network theory more than any other discipline. Graph which has been considered as the processor in network theory has a close relationship with epidemiology that dated as far back as early 1900 [1]. This is because the earliest models of infectious disease transfer were in a form of compartment which defines a graph even though adequate knowledge of mathematical computation and mechanistic behavior is scarce. This paper introduces a new type of disease propagation on network utilizing the potentials of neutrosophic algebraic group structures and graph theory.
A Comparative Investigation of Lead Sulfate and Lead Oxide Sulfate Study of Morphology and Thermal Decomposition  [PDF]
S. A. A. Sajadi
American Journal of Analytical Chemistry (AJAC) , 2011, DOI: 10.4236/ajac.2011.22024
Abstract: The compound lead oxide sulfate PbSO4.PbO was prepared in our laboratory. The Thermal behavior of PbSO4 was studied using techniques of Thermogravimetry under air atmosphere from 25 to 1200°C. The identity of both compounds was confirmed by XRD technique. Results obtained using both techniques support same decomposition stages for this compound. The electron microscopic investigations are made by SEM and TEM. The compound is characterized by XRD and the purity was determined by analytical Methods. Also a series of thermogravimetric analysis is made and the ideal condition is determined to convert this compound to pure lead oxide.
Metal ion-binding properties of L-glutamic acid and L-aspartic acid, a comparative investigation  [PDF]
S. A. A. Sajadi
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.22013
Abstract: A comparative research has been developed for acidity and stability constants of M(Glu)1, M(Asp)2 and M(Ttr)3 complexes, which have been determined by potentiometric pH titration. Depending on metal ion-binding properties, vital differences in building complex were observed. The present study indicates that in M(Ttr) com-plexes, metal ions are arranged to the carboxyl groups, but in M(Glu) and M(Asp), some metal ions are able to build chelate over amine groups. The results mentioned-above demonstrate that for some M(Glu) and M(Asp) complexes, the stability constants are also largely determined by the affinity of metal ions for amine group. This leads to a kind of selectivity of metal ions, and transfers them through building complexes accompanied with glutamate and aspartate. For heavy metal ions, this building complex helps the absorption and filtration of the blood plasma, and consequently, the excursion of heavy metal ions takes place. This is an important method in micro-dialysis. In this study the different as-pects of stabilization of metal ion complexes regarding to Irving-Williams sequence have been investigated.
Determining the Basaltic Sequence Using Seismic Reflection and Resistivity Methods  [PDF]
A. Alanezi, A. Qadrouh
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.32B004
Abstract:

This study was carried out in Harat Rahat (south of Almadinah Almonwarah) using seismic reflection and resistivity methods. The main objectives of this study are to determine the extent of the basaltic layer and to define the subsurface faults and fractures that could affect and control the groundwater movement in the study area. A 2D seismic profile was acquired and the result shows that the subsurface in the study area has a major fault. We obtained a well match when the seismic result was compared with drilled wells. As a complementary tool, the resistivity method was applied in order to detect the groundwater level. The results of the resistivity method showed that six distinct layers have been identified. The interpretation of these six layers show that the first three layers, the fourth layer, the fifth layer and the bottom of the section indicated various subsurface structures and lithologies; various basaltic layers, fractured basalt, weathered basement and fresh basaltic layers, respectively. It is obvious that the eventual success of geophysical surveys depend on the combination with other subsurface data sources in order to produce accurate maps.

Equilibria and Stability in Glycine, Tartrate and Tryptophan Complexes, Investigation on Interactions in Cu(II) Binary and Ternary Systems in Aqueous Solution  [PDF]
S. A. A. Sajadi
Open Journal of Inorganic Non-metallic Materials (OJINM) , 2014, DOI: 10.4236/ojinm.2014.41001
Abstract:

The acidity and stability constants of M(Gly)1, M(Ttr)1, and M(Trp)1 M: Cu2+, Cu(Bpy2)2+, and Cu(Phen3)2+ complexes, were determined by potentiometric pH titration. It is shown that the stability of the binary Cu(L), (L: Gly, Ttr, and Trp) complex is determined by the basicity of the carboxylate group on one side and amino group on the other side. It is demonstrated that the equilibrium, Cu(Ha4)2+ + Cu(L) \"\"Cu(Har)(L) + Cu2+, is displacement due to the well known experience that mixed ligand complexes formed by a divalent 3d ion, a heteroaromatic N base and an O donor ligand possess increased stability. The stability constants of the 1:1 complexes formed between Cu2+, Cu(Bpy)2+ or Cu(Phen)2+

Adaptive Fuzzy Sliding Mode Controller for Grid Interface Ocean Wave Energy Conversion  [PDF]
Adel A. A. Elgammal
Journal of Intelligent Learning Systems and Applications (JILSA) , 2014, DOI: 10.4236/jilsa.2014.62006
Abstract:

This paper presents a closed-loop vector control structure based on adaptive Fuzzy Logic Sliding Mode Controller (FL-SMC) for a grid-connected Wave Energy Conversion System (WECS) driven Self-Excited Induction Generator (SEIG). The aim of the developed control method is to automatically tune and optimize the scaling factors and the membership functions of the Fuzzy Logic Controllers (FLC) using Multi-Objective Genetic Algorithms (MOGA) and Multi-Objective Particle Swarm Optimization (MOPSO). Two Pulse Width Modulated voltage source PWM converters with a carrier-based Sinusoidal PWM modulation for both Generator- and Grid-side converters have been connected back to back between the generator terminals and utility grid via common DC link. The indirect vector control scheme is implemented to maintain balance between generated power and power supplied to the grid and maintain the terminal voltage of the generator and the DC bus voltage constant for variable rotor speed and load. Simulation study has been carried out using the MATLAB/Simulink environment to verify the robustness of the power electronics converters and the effectiveness of proposed control method under steady state and transient conditions and also machine parameters mismatches. The proposed control scheme has improved the voltage regulation and the transient performance of the wave energy scheme over a wide range of operating conditions.

Geochemical Characteristics and Chemical Electron Microprobe U-Pb-Th Dating of Pitchblende Mineralization from Gabal Gattar Younger Granite, North Eastern Desert, Egypt  [PDF]
Hassan A. A. Shahin
Open Journal of Geology (OJG) , 2014, DOI: 10.4236/ojg.2014.41003
Abstract:

Pitchblende mineralization was studied in the younger granite samples collected from Gabal Gattar, north Eastern Desert, Egypt using electron scanning microscope (ESM) and electron probe microanalyses (EPMA). This study revealed that this pitchblende contains significant Zr content reaching up to (66.80% ZrO2), which suggests that volcanic rocks were probably the source of such a deposit. High level emplaced high-K Calc-alkaline plutons as Qattar granite may have been associated with their volcanic equivalent emplaced in the surrounding area or now eroded. Lead content of the pitchblende mineralization is high and with moderate volcanics (up to 7.71% PbO). In contrast, it is low in ThO2, Y2O3 and REE2O3. High Zr and Pb content associated with pitchblende mineralization from Gattar granite indicates

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