نتایج جستجو برای: composite control
تعداد نتایج: 1441810 فیلتر نتایج به سال:
The paper discusses the possibility to control coupled bending-twisting vibrations of composite wing by means monoclinic structures in reinforcement plating. Decomposing potential straining energy and kinetic natural vibration modes into interacting non-interacting parts, it became possible introduce two coefficients that integrally consider effect geometry structure upon dynamic response param...
Evidence from general population studies shows the contribution of various temperament traits to the development of child psychopathology. Little is known about which traits are associated with internalizing and externalizing problems in young clinically referred children. The current study assessed temperament and internalizing and externalizing problems in 216 referred children (M = 4.35 year...
thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...
ticl4, ammonia, inorganic salts as raw material, nanometer composite-crystal tio2 powders were synthesized by two-step chemical method. precursors were crystallized with different phase and stable composite-crystal tio2 with anatase and rutile phase was prepared at low temperature. quantitative control of crystal phase was realized. remarkable factors including reaction ph value, reaction time,...
color match between fiber-reinforced composite (frc) restorations and teeth is an imperative factor in esthetic dentistry. the purpose of this study is to evaluate the influence of veneering composites and fibers on the color change of frc restorations.glass and polyethylene fibers were used to reinforce a direct microhybrid composite (z250, 3m espe) and a microfilled composite (gradia indirect...
Introduction: In orthodontic therapy ,different materials are used and their presence in oral cavity may modify their properties. The purpose of this study was to evaluate the direct and indirect biocompatibility of three orthodontic composite resins on culture of human oral fibroblasts. Methods: This was an interventional experimental study. The biocompatibility of three orthodontic composit...
Background and Aim: Microleakage has been always a major concern in restorative dentistry. The curing contraction of composites still presents a problem with controlling microleakage and postoperative sensitivity. The aim of this study was to investigate the effect of flowable and dual-cure resin composite liners on gingival microleakage of packable resin composite restorations. Materials and ...
objective: resistance to fracture is a critical issue when it comes to tooth restoration. the purpose of this study was to evaluate the fracture resistance of pulpotomized primary molars restored with glass ionomer (gi), amalgam and composite resin with and without cusp reduction. methods: in this in-vitro experimental study, 60 extracted primary teeth were randomly divided into 6 groups of 1...
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