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Search Results: 1 - 10 of 108 matches for " Miglani Revathi "
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Independent and Confluent Middle Mesial Root Canals in Mandibular First Molars: A Report of Four Cases
Mohanavelu Deepalakshmi,Chellasamy Savarimala Karumaran,Revathi Miglani,Rajamani Indira
Case Reports in Dentistry , 2012, DOI: 10.1155/2012/103125
Abstract: Mandibular molars demonstrate considerable variations with respect to number of roots and root canals. The possibility of additional root canals should be considered even in teeth with a low frequency of abnormal root canal anatomy. This paper discusses the endodontic management of the rare anatomical complexity middle mesial canals in mandibular first molar and also serves to remind the clinicians that such anatomical variations should be taken into account during the endodontic treatment of the mandibular molars.
Comparative evaluation of the surface tension and the pH of calcium hydroxide mixed with five different vehicles:An in vitro study
Poorni S,Miglani Revathi,Srinivasan M,Indira R
Indian Journal of Dental Research , 2009,
Abstract: Aim: The aim of this study was to evaluate the surface tension and pH of five different vehicles that are used as potential agents to mix calcium hydroxide in root canal treatments and to compare them with the final surface tension and pH of calcium hydroxide mixed with these vehicles. Materials and Methods: The study was carried out in two phases. In Phase I, the surface tension and pH of five vehicles (distilled water, saline, anesthetic solution, chlorhexidine, and glycerin) were evaluated using a Du Nuoy Tensiometer and a pH Meter. In Phase II, a predetermined amount of calcium hydroxide was mixed with the individual vehicles and the surface tension and pH was determined. In each group, seven samples were evaluated. Results: Among the individual vehicles, chlorhexidine had the least surface tension values (39.8+1.1 dynes/cm). Among the various calcium hydroxide mixtures, calcium hydroxide with chlorhexidine showed the least surface tension values (36.4+1.1 dynes/cm). All the vehicles showed an acidic pH ranging from 5 to 6.5. There was a significant increase in the pH values with the addition of calcium hydroxide to the respective vehicles. The calcium hydroxide mixtures had an alkaline pH ranging from 9 to 11.5; the highest pH was observed for calcium hydroxide mixed with distilled water and saline (11.5+0.2). Conclusion: The surface tension and pH of the vehicles directly influenced the surface tension and pH of the calcium hydroxide mixtures. Chlorhexidine was found to be a better vehicle for calcium hydroxide when used as an intracanal medicament.
Spiral CT diagnosis and endodontic management of an anatomically variant palatal root with two canals in a maxillary first molar
Deepalakshmi Mohanavelu,Miglani Revathi,Indira Rajamani,Ramachandran S
Indian Journal of Dental Research , 2010,
Abstract: This case report presents the endodontic management of an anatomically variant palatal root with 2 canals (Vertucci type II) in a maxillary first molar, which was confirmed with the help of spiral computed tomography (SCT). This serves to remind clinicians that such anatomic variations should be taken into account during the endodontic treatment of maxillary molars and highlights the invaluable aid of the SCT in accurate diagnosis and in negotiating the complex morphologic variations in root canals, thus enabling successful endodontic management.
Evaluation of the antibacterial and physical properties of glass ionomer cements containing chlorhexidine and cetrimide: An in-vitro study
Deepalakshmi Mohanavelu,Poorni Saravanan,Miglani Revathi,Rajamani Indira
Indian Journal of Dental Research , 2010,
Abstract: Background: Incorporation of antibacterial agents frequently results in changes in the physical properties of restorative materials. Materials and Methods: This in-vitro study investigated the antibacterial and physical properties of Glass ionomer cement (GIC) with chlorhexidine and cetrimide, to determine the optimal concentration, for incorporation of these agents to obtain antibacterial GICs for use with the Atraumatic restorative treatment approach. This was assessed using the agar diffusion test. Chlorhexidine diacetate and cetrimide were added to Glass ionomer cement type-IX (GIC-FUJI IX) at 1 and 2% W/W ratio. The experimental GIC specimens were placed on agar plates inoculated with Lactobacillus casei, and the area of inhibition was calculated after 48 hours. Results: All the experimental GICs exhibited inhibition of bacteria, but the sizes were dependent on the concentration of the antibacterial agent. Incorporation of chlorhexidine diacetate and cetrimide, at 2%, significantly decreased the compressive strength, and the setting time was extended a little by the addition of any concentration of chlorhexidine and cetrimide. Conclusions: The present study demonstrated that experimental GICs containing chlorhexidine diacetate and cetrimide were effective in inhibiting bacteria associated with caries, and incorporation of 1% cetrimide was optimal to give the appropriate antibacterial and physical properties.
Independent and Confluent Middle Mesial Root Canals in Mandibular First Molars: A Report of Four Cases
Mohanavelu Deepalakshmi,Chellasamy Savarimala Karumaran,Revathi Miglani,Rajamani Indira
Case Reports in Dentistry , 2012, DOI: 10.1155/2012/103125
Abstract: Mandibular molars demonstrate considerable variations with respect to number of roots and root canals. The possibility of additional root canals should be considered even in teeth with a low frequency of abnormal root canal anatomy. This paper discusses the endodontic management of the rare anatomical complexity middle mesial canals in mandibular first molar and also serves to remind the clinicians that such anatomical variations should be taken into account during the endodontic treatment of the mandibular molars. 1. Introduction Knowledge of both normal and abnormal anatomy of the root canal system dictates the parameters for execution of root canal therapy and can directly affect the outcome of the endodontic therapy. Missed extra roots and root canals are a major reason for failure of root canal treatment [1]. All categories of teeth may have additional roots and/or canals, with an increased likelihood of finding aberrant canal configurations in premolars and molars [2]. Lower mandibular molars are the first permanent teeth to erupt and most often require endodontic treatment [3]. The lower mandibular first molar normally has two roots, one mesial and one distal with two canals in the mesial and one or two canals in the distal root. The literature cites the anatomic variations and abnormalities associated with lower first mandibular molars; variations in canals include C-shaped canals, five canals, six canals, and seven canals. Variations in roots like three rooted mandibular molars have also been reported [2, 4–9]. Till date few clinical reports have described more than two canals in the mesial root of mandibular molars. Among these, the occurrence of middle mesial canal in the lower mandibular molar is (1–15%); this canal is also called “intermediary mesial canal” or “medial mesial canal” since it is situated centrally between the main buccal and lingual root canals [10–17]. The diameter of these middle mesial canals is smaller than other two [10] and is age related due to dentinal apposition [5]. The mesial canal is called independent when a distinct coronal orifice and apical foramen were observed or confluent when converging to one of the other two main canals and terminating at a common foramen [4]. It is of prime importance for the clinician to identify the entire topographic location of any additional canal orifices and also extremely important that clinicians use all the armamentaria at their disposal to locate and treat the entire root canal system [18]. Well-angulated periapical films should be taken with cone-directed straight-on,
Development of Stability-Indicating Liquid Chromatographic Method for Analysis of Cefoxitin Sodium in Sterile Formulation.
R. Revathi
Journal of Biomedical and Pharmaceutical Research , 2012,
Abstract: Stability-indicating high performance liquid chromatography (HPLC) method was developed and validated for analysis of cefoxitin sodium in its powder for injection dosage form. Chromatographic separation was achieved on a C18 μBondapack (300×3.9, 10μ) column, maintained at 30°C with a mobile phase consisted of water: acetonitrile: glacial acetic acid (800:190:10) and a flow rate of 0.9mL/min. The peak was detected at 254nm & the retention time was obtained at 16.74 min. The peak area plot was linear over the concentration range of 72.16μg/mL to 451.04μg/mL. The different experimental parameters affecting the drug stability were optimized. The method was validated for accuracy, precision, reproducibility, specificity, robustness and ruggedness in accordance with International Conference on Harmonization (ICH) guidelines. The proposed method was successfully applied for the analysis of cefoxitin sodium in drug substance and drug product in the presence of hydrolytic and oxidative degradants.
Adsorptive Removal of Metal (Cu++, Co++ and NI++) Ions from Aqueou Solution Over Powdered ActivatedCarbon:AKinetic and Equilibrium Study
G. Revathi
Bonfring International Journal of Industrial Engineering and Management Science , 2012, DOI: 10.9756/bijiems.1351
Abstract: Water pollution is one of the most undesirable environmental problems in the world and it requires solutions. Textile industries produce a lot of wastewater, which contains a number of contaminants, including acidic or caustic dissolved solids, toxic compounds and many different dyes. Many of the heavy metals are hazardous and may affect aquatic life causing various diseases and disorders. The aim of the present work is to explore the possibility of using these carbonaceous materials as low-cost adsorbents. The removal of heavy metals from industrial effluents is a major priority before their discharge on environment. Developed processes require expensive and in many cases advanced technologies. Commercially activated carbon is more costly, such that cost of investment may not permit to use effectively. We report that the low cost carbon system, which were obtained from used up commercial batteries Nippo and BPL are used for the effective adsorption of heavy metal cations, Cu++, Ni++ and Co++, colouring metal ions also adsorb active low molecular weight organic compounds like phenols, carboxylic acid and phenyl acetic acid. Carbon dose required for maximum percentage of adsorption was found as 55.8, 50.5 and 54.2 in the case of Cu++, Ni++ and Co++ ions respectively per gram of isotherm constants after studying Langmuir and Freundlich method were determined. Plot of metal ion adsorbed in mg vs. equilibrium metal concentration are linear at low concentration and flat at higher concentration. This supports the Langmuir theory that the intermolecular forces between the sorbate and sorbent would not be significant beyond the first sorbed layer and that a portion of the sorbate molecules adheres, while the remainder renounce into the liquid phase. Under the kinetics, the plots of the concentration of metal ions i.e. log [1-u (t)] vs. contact time are linear, indicates that the sorption could be a first order reversible kinetics.
Plane Strain Deformation of a Poroelastic Half-space in Welded Contact with Transversely Isotropic Elastic Half-Space
NEELAM KUMARI,ASEEM MIGLANI
International Journal of Engineering Science and Technology , 2012,
Abstract: The Biot linearized theory for fluid saturated porous materials is used to study the plane strain deformation of an isotropic, homogeneous, poroelastPic half space in welded contact with a homogeneous, transversely isotropic, elastic half space caused by an inclined line-load in elastic half space. The integral expressions for the displacements and stresses in the two half spaces in welded contact are obtained from the corresponding expressions for an unbounded transversely isotropic elastic and poroelastic medium by applying boundary conditions at the interface. The integrals for the inclined line-load are solved analytically for the limiting casei.e. undrained conditions in high frequency limit. The undrained displacements, stresses and pore pressure are shown graphically. Expression for the pore pressure is also calculated for undrained conditions in the high frequency limit.
Deformation due to distributed sources in micropolar thermodiffusive medium
Sachin Kaushal,Aseem Miglani
Mathematical Sciences Quarterly Journal , 2010,
Abstract: The general solution to the field equations in micropolar generalized thermodiffusive in the context of G-L theory is investigated by applying the Laplace and Fourier transform's as a result of various sources. An application of distributed normal forces or thermal sources or potential sources has been taken to show the utility of the problem. To get the solution in the physical form, a numerical inversion technique has been applied. The transformed components of stress, temperature distribution and chemical potential for G-L theory and CT theory has been depicted graphically and results are compared analytically to show the impact of diffusion, relaxation times and micropolarity on these quantities. Some special case of interest are also deduced from present investigation.
Radiative Effect on Flow and Heat Transfer over a Vertically Oscillating Porous Flat Plate Embedded in Porous Medium with Oscillating Surface Temperature  [PDF]
Monika Miglani, Net Ram Garg, Mukesh Kumar Sharma
Open Journal of Fluid Dynamics (OJFD) , 2016, DOI: 10.4236/ojfd.2016.62010
Abstract: The effect of radiation on flow and heat transfer over a vertically oscillating porous flat plate embedded in porous medium with oscillating surface temperature is investigated. The analytic solutions of momentum and energy equations are obtained. The velocity and temperature profiles are computed. The frictional force at the plate due to viscosity of fluid is estimated in terms of non dimensional skin friction coefficient and heat convection at the plate is estimated in the form of Nusselt number. The effects of physical parameters Prandtl number Pr, Grashof number Gr, Suction parameter S and radiative parameter R on velocity and temperature profiles are analyzed through graphs. The effects of oscillation on the velocity and temperature profiles are shown through 3-D surface plot.
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