Direct Esthetic Restorative Materials Composite What does it mean

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Direct Esthetic Restorative Materials • composite resin dental composite Types of Composite Composites and Cements. Lecture • Both silicate cement and acrylic resin (PMMA) are • Materials from History • For Direct Restorations • • Composite What does it mean ? • Organic phase (matrix) • Inorganic dispersed phase (fillers) • Coupling phase • Organic Phase (Resin Matrix ) • Monomer system • BIS-GMA or UDMA. (viscous monomers) • Silorane resins (in the most recent, minimal-shrink type) • Diluents • TEGDMA HEMA • Function • Hold all ingredients in one mass • Able to polymerize (Responsible for material's setting ) • Accept pigments (Responsible for material's color ) • Responsible for the setting contraction • Dispersed Phase (Fillers ) • 1. Inorganic fillers • Classification based on filler size and loading • Properties of traditional Composites • Coupling Phase • Vinyl triethoxy silane ( vinyl silane) • γ-Methacryloxy propyl trimethoxy Silane • Mechanism of attachment • They are composed of bi-functional molecules • The silane group chemically bonds to the inorganic materials • Both the ethoxy and methoxy groups react with resin molecules of the matrix • Function •   The water uptake •   The solubility rate •   The crack propagation • Quartz, glass, barium and lithium alumino-silicates, barium fluoride • Zinc (Zn), Boron (B), zirconium (Zr) and yttrium (Y) ions are added to produce radioopacity • Bonding of fillers to resin matrix • Chemically-Cured Composite • Light-cured composite • Effect of classical curing techniques on composite properties • Working time • step by step restoration • UV stabilizers… (2-hydroxy-4- methoxy benzophenone) Provide color stability under electro-magnetic waves • Coloring agents (Pigments)…. To provide materials with different shades • Composite polymerization is retarded in presence of Eugenol and oxygen. • It is mandatory to incrementally insert the light-cured material • The chemically-cured materials is no longer be used clinically • Mechanical, Micro-mechanical and inter-penetration means help the • composite retain to the tooth structure • Direct applications of resin composites • Filling class III, IV, V and VI cavities in anterior teeth • Filling small and moderate Class I, II, V cavities in post. teeth Core build-up (strengthening of weakened teeth) • Diastma Closure Direct laminate veneer • Advantages • Esthetic. • Conservative cavity. • Low thermal conductivity. • Quite resistance to microleakage • No corrosion. • Strengthening of the remaining tooth st. • Disadvantages • Filling class III, IV, V and VI cavities in anterior teeth • What do you exactly know about • the modified types of composite restoratives ? • افضل انواع الحشوات التي تستخدم للاسنان الامامية القواطع و الخلفيه الطواحن من حيث الشكل و النوع و اللون و درجة البياض و التزامن و التناسق و السطوع و مقارنتها مع الاسنان الطبيعيه و جمالها و طريقه تحظير المواد المستخدمه لحشو الشن بصوره سهله جدا و مع الكفاءة المطلوبه و الجوده اكيد و طرف لسق الحشوه في بنية السن و الاحتفاظ بها لفتره طويله و المواد الكيميائية المصنعه • composite resin dental composite Types of Composite Composites and Cements • The best types of fillings that are used for front teeth, incisors and posterior mills in terms of shape, type, color, whiteness, synchronization, consistency, brightness and comparison with natural teeth and its beauty, and the method used to prohibit the materials used for filling the filling in a very easy way and with the required efficiency and quality • Sure and tip for filling the filling in the tooth structure and keep it for a long time and the manufactured chemicals • - - - - - - - - - - - - -- - -- - - - - - - - - - - see all videos online . • my channel lectures dentist - PLAYLIST - All Lectures - • • All Lectures • Composite Resins: Composition and Classifications Dental Composite simplified | Part 1 composite resin dental filling sensitivity restorative #dentistry posterior composite #resin #dental composite Types of #Composite #Composites and #Cements restorative dentistry posterior composite resin • - - - - - - - - - - - -- - -- - - - - - - - - - - • All you have to do is join this channel to take advantage of the benefits • / @lecturesdentist • _ _ _ _ _ _ _ _ _ _ _ _ _ _ • Lectures Dentist • playlist: All Lectures • All Lectures • Facebook: / cudman.buck • Instagram: / cudmanbuck • Blogger: https://lecturesdentist.blogspot.com • Twitter: / lecturesdentist

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