The NS Matrix System

Abstract

Unlike amalgam, the difficulty of condensing composite presents us with the challenge, recreating a tight interproximal contact. May be more importantly, trimming composite that has been extruded beyond the preparation margin around an interproximal box is difficult, frustrating and unpredictable. So in a quest to minimize the amount of trimming we need to do with high-speed instrumentation after the composite is cured. Recreating the natural tooth shape and sealing the walls begins with the matrix. A matrix system must do the following three things: Recreate the natural tooth shape and interproximal contact Seal the proximal and gingival walls of the prep Overcome the thickness of the band. On the market today are both plastic and metal matrix bands. They are available in a variety of thicknesses and delivery systems that include sectional matrix bands, circumferential systems and bands that require a holder. Here, we present the NS matrix system which is a highly effective and economical matrix system that can be used for a variety of clinical applications, including posterior and anterior restorations. How to cite this article Sharma NS, Shrivastav SS, Hazarey PV, Kamble RH, Sharma PN. The NS Matrix System. World J Dent 2013;4(1):4-5.

Synthesis and Optical Characteristics of Silver Nanoparticles on Different Substrates

“…19 81 An XRD pattern of as prepared silver nanoparticle on Polyethylene substrate was given in Fig. 1(a).…”

“…1(a). The particle size of as prepared samples was found using Scherrer formula d = 0.9λ / βcosθ where d = average particle size, β is full width at half maxima (FWHM), θ is the Bragg angle, λ is the wavelength of Cu K α in radians [17][18][19][20][21]. The average size of silver nanoparticles on thin film on polyethylene substrate comes out to be 7.40 nm.…”

Upper bound on three-tangles of reduced states of four-qubit pure states

“…Being independent of the choice of focus qubit, I 4,8 can be written in alternate forms. Four-tangle based on degree eight invariant is defined [16,20] as : m = 0 to 4 for qubits A 1 A 3 A 4 can be constructed from two-qubit invariants of properly selected pair of qubits [20]. In the following sections, the subscript 4 in (I 3,4 )…”

“…Three tangle [15] is an entanglement monotone that quantifies three-way entanglement of a three-qubit state. Four-way entanglement of a four-qubit state is quantified by four-tangle [16], which for pure state is a degree eight function of state coefficients. Three-tangle and four-tangle for pure quantum states are moduli of specific local special unitary (LSUT) invariants, that are polynomial functions of state coefficients.…”

Photochemical treatment as an alternative to improve the quality of wastewater after advanced primary treatment.

“…The advanced oxidation processes (AOP's) have a great potential for its application over a lot of treatment areas of residual water that contains oxidizable contaminants, is supported onto the high oxidizing power of the hydroxyl radicals, a transitory specie for the oxidation of organic compounds to simple substances, preferential carbon dioxide and water, it is also used for the oxidation of the inorganic compounds with a low oxidation state 3 . The AOP's have been employed for the conditioning of the water coming from groundwater and sulphide deposits [4][5] , textile, pharmaceutical 6 , food, paper, chemical, and other industrial processes.…”