Restorative R11 Restorative SDLE MCQ Facebook X LinkedIn Messenger Messenger WhatsApp Telegram Print Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 0% 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263 Restorative R11 Restorative SDLE MCQ DentQuiz SDLE Mock Exam Instruction To mark a question and come back to it later, click the Bookmark icon. For the best experience, use a computer and switch to full screen button (from the top left corner). You can review and change your answers before clicking Next. Explanations will appear after each question to help you understand the correct answer. Your results will be shown right after you finish the exam. This is a fresh attempt — previous answers or bookmarks won’t be saved. The source of the questions and answers is recent Rafee’ Al-Maqam files. Special thanks to رفيع المقام. 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Please fill in your details to continue NameEmailPhone Number 1 / 63 Category: Restorative 1) Powered bleaching uses: Sodium perborate Carbamide peroxide Polyacrylic acid Hydrogen peroxide Hydrogen peroxide is the active bleaching agent. 2 / 63 Category: Restorative 2) Best root for post in maxillary molars: Fused roots Mesiobuccal Palatal Distobuccal Palatal root is longest and straightest for post placement. 3 / 63 Category: Restorative 3) Metamerism refers to: Tooth discoloration Restoration shrinkage Bleaching effect Color mismatch under different light Metamerism is color variation under different light sources. 4 / 63 Category: Restorative 4) Disadvantage of ZOE: Allergic potential Weak strength Poor adhesion Long setting time ZOE can cause allergic reactions in some patients. 5 / 63 Category: Restorative 5) Why choose a white shade after rubber dam placement? Dentin color Enamel permeability + inorganic Enamel organic content Enamel permeability Rubber dam dehydrates enamel, affecting shade. 6 / 63 Category: Restorative 6) Pt wants to remove all amalgam due to health fears. Best approach: No intervention Educate on amalgam safety Remove all in one session Partial removal with composite Evidence shows amalgam is safe; patient education is key. 7 / 63 Category: Restorative 7) Bur for amalgam removal: Diamond Steel Finishing bur Carbide Carbide burs cut amalgam efficiently. 8 / 63 Category: Restorative 8) For a composite restoration with 0.5 mm of remaining dentin, what should be placed? GIC Zinc Oxide Eugenol (ZOE) cement Calcium hydroxide Dentin bonding system only Dentin bonding system is sufficient for minimal remaining dentin. 9 / 63 Category: Restorative 9) Gold onlays on #13,14; pain on biting + chipped canine edge. Cause? Sinusitis High occlusion Cracked tooth Galvanism High occlusion causes trauma to opposing teeth. 10 / 63 Category: Restorative 10) Histological feature of cervical caries: Demineralized enamel Pulp inflammation Bacterial invasion Sclerotic dentin Cervical caries shows sclerotic dentin. 11 / 63 Category: Restorative 11) Bone resorption under amalgam is likely due to: Bacterial invasion from overhang Trauma from occlusion Amalgam allergy Calculus Overhangs cause plaque accumulation and bone loss. 12 / 63 Category: Restorative 12) Throbbing pain under gold onlay (#45) with opposing amalgam: Galvanism Cracked tooth Periodontal abscess High occlusion Galvanic currents cause pain from dissimilar metals. 13 / 63 Category: Restorative 13) Instrument for sharpening angles in Class II prep: Hatchet Spoon excavator Chisel (angle former) Gingival trimmer Angle former creates precise line angles. 14 / 63 Category: Restorative 14) Cement for fiber posts: Temporary cement ZOE Resin GIC Resin cement bonds well to posts and dentin. 15 / 63 Category: Restorative 15) Best material for Class V cervical caries: Hybrid composite Macrofill composite Flowable composite Amalgam Flowable composites adapt well to cervical lesions. 16 / 63 Category: Restorative 16) Generation of etch-primer-bond adhesive system: 7th 5th 6th 4th 4th-gen systems involve separate etching, priming, and bonding steps. 17 / 63 Category: Restorative 17) Pain from overhang restoration is due to: Food impaction Cracked tooth Pulpitis Sinusitis Overhangs trap food, causing gingival irritation. 18 / 63 Category: Restorative 18) Preventive resin restoration for fissure caries: GIC Compomer Resin composite RMGIC Resin composites are durable for preventive restorations. 19 / 63 Category: Restorative 19) Occlusal contact placement for bruxism patient: Smooth concave fossa Deep fossa Light contact No contact Concave fossa distributes forces evenly, reducing deflection. 20 / 63 Category: Restorative 20) Dentinal tubule diameter near pulp (µm): 2 4 1 3 Tubules widen near pulp (~2.5-3µm). 21 / 63 Category: Restorative 21) Polyether impression material property: Worse rigidity than polysulfide Absorbs water and expands Better stability than PVS Worse stability than polysulfide Polyether absorbs water, causing dimensional changes. 22 / 63 Category: Restorative 22) Copper % in high-copper amalgam: 4% 13% 2% 10% High-copper amalgams contain ~13% copper for strength. 23 / 63 Category: Restorative 23) Class III cavities are located: Proximal of posteriors Gingival third Proximal of anteriors Occlusal pits Class III affects anteriors’ proximal surfaces. 24 / 63 Category: Restorative 24) How to differentiate crack from craze line? X-ray Cold test Percussion Transillumination Transillumination highlights crack lines. 25 / 63 Category: Restorative 25) Extra buccal groove in crown prep for: Retention Occlusal stability Gingival health Esthetics Grooves enhance mechanical retention. 26 / 63 Category: Restorative 26) Wrinkled rubber dam holes indicate: Dam too small Dam too thick Holes too far apart Incorrect clamp placement Wrinkles arise from stretched dam material. 27 / 63 Category: Restorative 27) Food impaction due to occlusal wear on proximal surfaces is caused by: Occlusal contact Embrasure size Proximal contact issue Poor restoration contour Open proximal contacts allow food trapping. 28 / 63 Category: Restorative 28) Advantage of zinc oxide: Fast resorption Adhesive properties Esthetic High strength Zinc oxide resorbs quickly in tissues. 29 / 63 Category: Restorative 29) Most durable material for foundation restoration in broken-down molars: GIC Amalgam Compomer Composite resin Amalgam provides strength for core build-ups. 30 / 63 Category: Restorative 30) Lining for deep Class V cavity near pulp: Calcium hydroxide Composite Zinc phosphate GIC Ca(OH)2 protects pulp in deep cavities. 31 / 63 Category: Restorative 31) Collagen type during pulp development: Type I Type II Type IV Type III Type I collagen dominates pulp extracellular matrix. 32 / 63 Category: Restorative 32) Management of weak ridge after Class II caries removal: Place matrix band Reinforce with GIC Monitor Remove ridge Weak ridges risk fracture; removal prevents future issues. 33 / 63 Category: Restorative 33) Management of amalgam overhang: SRP Remove and replace restoration Monitor Finishing Overhangs cause plaque retention and must be removed. 34 / 63 Category: Restorative 34) Acid-base reaction material: Composite ZOE Amalgam GIC GIC sets via acid-base reaction between glass and polyacid. 35 / 63 Category: Restorative 35) X-rays for low-caries-risk 9-year-old recall: Panoramic + 2 bitewings 2 periapicals + 2 bitewings Full-mouth series None needed No x-rays needed for low-risk patients without symptoms. 36 / 63 Category: Restorative 36) Correct position for amalgam pin: Parallel to tooth long axis Parallel to enamel-dentine junction Diagonal placement Perpendicular to cavity Pins should align with tooth structure to avoid stress. 37 / 63 Category: Restorative 37) When should shade selection for restoration be done? Before rubber dam application During polishing After finishing After anesthesia Shade matching is accurate before dehydration from rubber dam. 38 / 63 Category: Restorative 38) Woman requests amalgam removal due to health concerns: Educate on safety Remove all immediately Staged removal Refer to specialist Amalgam safety is evidence-based; education is priority. 39 / 63 Category: Restorative 39) The primary function of silane coupling agent is to: Prevent caries Reduce sensitivity Bind porcelain to tooth Strengthen enamel Silane bonds porcelain to resin/teeth. 40 / 63 Category: Restorative 40) A patient drinks soda daily. Which non-carious lesion is likely? Abfraction Abrasion Erosion Hypoplasia Acidic drinks cause erosion. 41 / 63 Category: Restorative 41) Dentin primer function: Reduce sensitivity Remove caries Strengthen enamel Wet dentin for bonding Primer prepares dentin for adhesive bonding. 42 / 63 Category: Restorative 42) Problem caused by overhang: Pulp necrosis Gingival irritation Tooth fracture Occlusal interference Overhangs irritate gums and retain plaque. 43 / 63 Category: Restorative 43) Chemo-mechanical tooth wear is termed: Abrasion Attrition Abfraction Erosion Erosion is chemical wear, e.g., from acids. 44 / 63 Category: Restorative 44) Zinc phosphate contraindication: Poor esthetics Low strength High solubility Long setting time Solubility in oral fluids limits its use. 45 / 63 Category: Restorative 45) The main composition of dentin is: Hydroxyapatite (non-organic) Water Collagen fibers Lipids Hydroxyapatite is the primary inorganic component. 46 / 63 Category: Restorative 46) Pt with upper 6,7 shallow amalgam restorations has dull pain below eye. Cause? Cracked tooth Irreversible pulpitis Sinusitis Periodontitis Pain referred from sinusitis often mimics toothache. 47 / 63 Category: Restorative 47) Management of food impaction after composite: Monitor Replace restoration Remove excess Add composite layer Poor contacts require restoration replacement. 48 / 63 Category: Restorative 48) Best diagnostic tool for incipient smooth surface caries: Bitewing Transillumination Periapical Diagnodent Bitewings detect early interproximal caries. 49 / 63 Category: Restorative 49) Final restoration after endo access through amalgam: Composite Crown Amalgam Temporary filling Amalgam is durable for posterior teeth post-endo. 50 / 63 Category: Restorative 50) Cement with chemical bond to enamel: Composite Zinc phosphate Zinc polycarboxylate GIC Polycarboxylate bonds chemically to enamel. 51 / 63 Category: Restorative 51) Which is a high-risk caries factor? Fluorosis Good oral hygiene Open contact Using miswak only Open contacts trap food, increasing caries risk. 52 / 63 Category: Restorative 52) Pre-bleaching assessment: Evaluate existing restorations Record shade All of the above Check for caries Comprehensive assessment ensures safe bleaching. 53 / 63 Category: Restorative 53) Cavity depth less than 0.5 mm in composite requires: Calcium hydroxide liner Only dentin bonding system ZOE cement GIC base Shallow cavities only need bonding for adhesion. 54 / 63 Category: Restorative 54) Cement causing ceramic fractures: Polycarboxylate GIC Resin cement Zinc phosphate GIC’s rigidity stresses brittle ceramics. 55 / 63 Category: Restorative 55) When remaining dentin above pulp is less than 0.5mm, what material is used? Composite resin GIC ZOE cement Calcium hydroxide liner Calcium hydroxide protects the pulp in deep cavities. 56 / 63 Category: Restorative 56) Priority in treating large vs. small caries: Simultaneous restoration Restore small first Restore large first No treatment Large caries pose higher risk of pulp involvement. 57 / 63 Category: Restorative 57) Fractured mesial cusp on molar with composite: management? Extract Crown Onlay Inlay Onlays cover cusps and conserve tooth structure. 58 / 63 Category: Restorative 58) Why mix zinc phosphate on cold slab? Prevent cracking Reduce shrinkage Prolong working time Enhance adhesion Cold slows exothermic reaction, extending working time. 59 / 63 Category: Restorative 59) Post-brace tooth discoloration treatment: Internal bleaching Veneers Microabrasion External bleaching Microabrasion removes surface stains (macroabrasion is ideal but not listed). 60 / 63 Category: Restorative 60) Why remove smear layer during RCT? Prevent discoloration Reduce postoperative pain Easier sealer removal Enhance sealer penetration Smear layer blocks dentinal tubules; removal improves sealing. 61 / 63 Category: Restorative 61) Bone loss near overhang amalgam is caused by: Systemic disease Food impaction + plaque retention Occlusal trauma Allergic reaction Overhangs retain plaque, leading to periodontitis. 62 / 63 Category: Restorative 62) Management of pulp exposure during caries removal: Direct capping MTA Indirect capping RCT Direct capping is attempted for small exposures. 63 / 63 Category: Restorative 63) Treatment order for #47 (sensitivity, calculus, impacted #38): Restore → scale → extract Monitor Extract → restore → scale Scale → restore → extract Scaling first reduces inflammation for accurate diagnosis. Your score is The average score is 56% Facebook Twitter 0% Restart quiz Please rate this exam and leave a comment with any notes or suggestions. 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