Operative 🥇🎗
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- ER - коэффициент вовлеченности
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هذا رابط القناة
شاركو
اليحب يصعد ادمن بالقناة وينشر اسئلة او شغلات تفيدكم ( يعتبره كمخزن اله يرجعله بالامتحانات )
يراسلني عالبوت @b2chatbot
22500
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
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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
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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
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Crown and bridge (١،٢،٣،٤)
https://youtu.be/46NJd7trcO0
https://youtu.be/JqfYeONUATw
512140
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
259310
هذا السوال حليته بس اكو مامتاكد منهن
فانتم الي تشوفون حله خطا دزو عالبوت
19620
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.
249580
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