Operative 🥇🎗

هذا رابط القناة شاركو اليحب يصعد ادمن بالقناة وينشر اسئلة او شغلات تفيدكم ( يعتبره كمخزن اله يرجعله بالامتحانات ) يراسلني عالبوت @b2chatbot

هاي محاضرات جامعة العين

اشعة https://youtu.be/_eK7KfopSdI https://youtu.be/RwE6P3EhO9c https://youtu.be/4LzOIK1Ti8g https://youtu.be/jjo-URXQ3UY https://youtu.be/x-lhTs0mlhQ https://youtu.be/EovUbjEgXPM https://youtu.be/0CvCDbid4YI https://youtu.be/kCbFhRCVVLY https://youtu.be/AvAZ9w2AIqc https://youtu.be/KL14hMDalSE https://youtu.be/QjDsFlLf3ng https://youtu.be/oq9PEDqH6o8 ——————————————— الجراحه (٧-١٨) https://youtu.be/YcPyAuUG3AM https://youtu.be/0OP9z5Mw1N0 https://youtu.be/Ve9HVMUnRzE https://youtu.be/tvBDoxsA2Dc https://youtu.be/IbGns7PQdYs https://youtu.be/CFCabY79vfE https://youtu.be/dHI7PF7fFXw https://youtu.be/PEIlAeFkWOg https://youtu.be/_ufMlNyIMJ8 https://youtu.be/3a86sdDDfEM https://youtu.be/RfiV1fRcIWs https://youtu.be/Uu1TFYa7f_w https://youtu.be/PdBR9fum-yQ https://youtu.be/ySYrfeUbQgY https://youtu.be/6t1OG4al_lU ——————————————— الفارما https://youtu.be/3fVG0PsZ_qc https://youtu.be/qIzuihAspJw https://youtu.be/vXdMpozbCgo https://youtu.be/1m50tdZTNXk https://youtu.be/EZDBU7IQAjA https://youtu.be/vyRNaY_sXpU https://youtu.be/osFMUndZglo https://youtu.be/TIqgM5PRcsg https://youtu.be/Go09ScPMLmM ——————————————— البروس https://youtu.be/CRoKNFJO84s https://youtu.be/RA_zDAX64uM https://youtu.be/SLULBzNbOz8 https://youtu.be/v5j64uDmM60 https://youtu.be/3ad6JplTK9g https://youtu.be/Ydc5JUAZOyI https://youtu.be/bfF1U0Awweg https://youtu.be/C5k_VulIYPY https://youtu.be/-uqbxvsSEKs https://youtu.be/hQZNXDhEY5s ——————————————— اوبرتف (٥-١٠) https://youtu.be/o2upkz0pQ-k https://youtu.be/MCnwe5ELc0o https://youtu.be/UkFYWBynMTw https://youtu.be/IiZ5plybxbE https://youtu.be/cUE0yY2RKEo https://youtu.be/WDQZPCQD2YE ——————————————— Crown and bridge (١،٢،٣،٤) https://youtu.be/46NJd7trcO0 https://youtu.be/JqfYeONUATw

راجعو هذا لان اكو تصحيحات

هذا الحل دزوليا هم فانتم اي نقطة تشوفون بيها خطا هم دزوها

Q3 1- To do investing we need a- casting ring b- ring liner c- crucible former d- investment material 2- wing join platel and proximal chamfer finishing line with shoulder finishing line of the buccal 3- occlusal reduction following the geometric inclined planes of the occlusal surface should be done for the following objectives 1- to provide restoration with uniform thickness 2-preservation of tooth structure(axial wall length) 3-to improve the resistance and retention feature of the preparation 4- Dowel pins: these are ready-made metal pins which are used as a means of orienting the die(s) to the working cast and allow the die to be easily removed and accurately replaced into the working cast 5- Dental floss is used to check the interproximal contact by passing it between the restoration and the adjacent natural teeth, it should have slight resistance 6- D.O.G placed on the anatomic ridge and grooves of occlusal surface using round end tapered fissure bur, the grooves should extend through occluso-buccal line angle but only with 0.5 mm deep to prevent metal display. 7-Polycarbonate temporary crowns indicated for anterior and posterior teeth while acrylic temporary crown indicated for anterior teeth

هذا السوال حليته بس اكو مامتاكد منهن فانتم الي تشوفون حله خطا دزو عالبوت

اوبرتف - اسئلة الفاينل Q1/ T,F with - 1- (F) in smooth surface Caries the apex of the enamel cone meets the apex of dentine cone 2-(F) dovetail on the lingual surface of maxillary canine is a primary retention 3- (F) In cavitated caries, the enamel surface is broken (not intact), and usually the lesion has advanced into dentin. Usually, remineralization is possible 4-(F) cutting instruments are composed of three parts: handle, shank and nib 5-(F) pen grasp, This grasping is used mostly for preparing of upper teeth with indirect viewing technique 6-(T) Ash 6 can be used for the axial wall while Ash 49 can be used for the floor 7-(T ) When a small lesion is prepared, gingival margin should clear adjacent tooth by 0.5 8-(F) in class 3 and 5 retentive grooves are made using 1/2 round bur 9-(T ) Restorative materials for Class V cavity Amalgam, Composite. Resin modified GIC ,Compomers 10-(F) in autoclave Packs of instruments must be placed at least 1 cm apart , and 30 minutes is enough for sterilization 11-(T) Stainless steel is now the preferred material because stainless steel instruments remains bright with steam or dry heat sterilization 12-(F )The minuta pins usually are used as a backup in cases when the Minikin pin hole was over prepared 13-(F) Includes monomers that are mostly hydrophilic such as Bis-GMA 14-(F ) enamel Acid etching is applied for 10 to 15 seconds 15-(F) varnish should be applied in 3 layers 16-(F) composite placed in layers each layer 2 mm, and should be cured for 10 s 17-(F) (γ2) phase which is the silver-mercury is the weakest and the more corrodible phase of the reaction. 18-(F) Overmixed amalgam producing an amalgam with a longer working time. Such an amalgam mass contains excessive amounts of porosity, has lower strength, and possesses poorer corrosion resistance. 19-(F) The amalgam undergo expansion first after setting (first 20 min.) and after this period a shrinkage will occur 20-(F) zinc phosphate and zinc polycarboxylate are both has a chemical adhesion by ionic interaction مامتاكد 21-(T) Reinforced composites It consists of a combination of a resin matrix, randomly orientated E-glass fiber and inorganic particulate fillers 22-(F) Microfilled Composites high modulus of elasticity allows restoration to flex 23-(T) smear or smear layer that closes off the dentin tubules. This layer is lightly adhered to the dentin surface and contains tooth cuttings, saliva, bacteria, and other surface debris. 24-(F) Boiling water can kill spore bacteria and viruses. 25-(F) Upper 6 also had exceptions because of the anatomy of the tooth. The presence of oblique Ridge in between distolingual & mesiobuccal cusps gives the possibility to do 2 separated cavities one mesial & the other on the distal without the need to include oblique ridge within the preparation 26-(F) Buccal and lingual walls Smooth and curved mesio-distally Smooth and straight pulpo-occlusal To provide mechanical lock or retention to the occlusal portion and create bulk at the margins. 27-(F) Primary Resistance Form : Primary resistance form is the shape or form of the conventional preparation that prevents displacement or removal of the restoration 28-(F) pulpul floor of the mandibular first premolar in tooth preparation is flat. 29-(T) Autoclaving tends to rust carbon steel instruments and burs. 30-(T) if more than one pin is used, 3-5 mm space between pins is required. 31-(T ) Conventional Class III indicated for restorations involving the root surface.

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