Restorative Restorative SDLE MCQ | Part 1 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 0% 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950 Restorative Restorative SDLE MCQ | Part 1 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. Answers are based on colleagues best efforts and may not be 100% accurate. If you believe an answer is incorrect, please click the Report button to let us know. Please fill in your details to continue NameEmailPhone Number 1 / 50 Category: Restorative 1) Condensation of amalgam for 8 minutes results in: Residual mercury increases Amalgam will set No change Easy to carve Prolonged condensation causes the amalgam to set, making it difficult to manipulate. 2 / 50 Category: Restorative 2) A deep carious lesion is indicated for extraction. Which of the following criteria helps in choosing the type of extraction? Gingival swelling in buccal Pulpal pain Percussion 3 site caries The extent of caries (3 site caries) is a critical factor in deciding the extraction method. 3 / 50 Category: Restorative 3) What is the term for the change in length per unit length of a material as temperature changes? Thermal resistance Thermal conductivity Thermal diffusivity Thermal coefficient of expansion The thermal coefficient of expansion measures how a material expands or contracts with temperature changes. 4 / 50 Category: Restorative 4) What material is used for pouring casts? Refractory material Wax Die stone Plaster Die stone is the most common material for pouring casts due to its strength and accuracy. 5 / 50 Category: Restorative 5) What increases the retention of pit and fissure sealants? No treatment Bonding agent Air abrasion Acid etching Acid etching creates microporosities in the enamel, improving sealant retention. 6 / 50 Category: Restorative 6) Which impression material can be poured after one day? Alginate Zinc oxide Polysulfide PVS PVS (polyvinyl siloxane) retains its dimensional stability and can be poured after one day. 7 / 50 Category: Restorative 7) How does the radiopacity of a fiber post compare to flowable composite in an X-ray? Not different Less radiopaque More radiopaque Same radiopacity Fiber posts are less radiopaque than flowable composite, making them appear darker on X-rays. 8 / 50 Category: Restorative 8) A dentist uses latex gloves with polysulfide impression material, but the impression doesn’t set. Why? Temperature issues Sulfur contamination Wrong paste proportion Insufficient mixing time Sulfur in latex gloves can inhibit the setting of polysulfide impression material. 9 / 50 Category: Restorative 9) What causes hyperplasia on incisor tips and occlusal surfaces of molars? Metallic Trauma Tetracycline Fluorosis Fluorosis can cause enamel hyperplasia, leading to irregularities on tooth surfaces. 10 / 50 Category: Restorative 10) A patient with a short root and periapical radiolucency needs isolation for #25. What is the best method? No need Extract and implant Clamp #26 and extend dam to #24 Cotton roll Instead of clamping tooth #25, which has a short root and may be fragile, the clamp is placed on tooth #26 (maxillary first molar) for better stability. The rubber dam is then extended to tooth #24, ensuring proper isolation during the procedure. 11 / 50 Category: Restorative 11) A patient with bruxism has a fractured amalgam. What is the best treatment option? Ceramic inlay No treatment Composite Cast restoration Cast restoration provides durability and strength, which is ideal for patients with bruxism. 12 / 50 Category: Restorative 12) What happens when zinc phosphate cement is used for cementation? Discoloration Pulp necrosis Allergic reaction Sensitivity Zinc phosphate can cause pulp necrosis due to its acidic nature and irritation. 13 / 50 Category: Restorative 13) A patient with a recent gold onlay experiences pain with temperature changes. What is the likely cause? Unpolished restoration Irritation from cement Occlusal imbalance Allergy to the restoration Irritation from the cement used can cause sensitivity to temperature changes. 14 / 50 Category: Restorative 14) A patient experiences pain during tooth preparation, even on the enamel layer. What is the likely cause? Enamel lamellae Enamel tufts Rods Enamel spindle Enamel spindles are extensions of odontoblasts into the enamel, which can cause sensitivity. 15 / 50 Category: Restorative 15) What is the definition of a thixotropic material? A material that contracts with heat A solid that becomes liquid under pressure A liquid that becomes less viscous under pressure A material that expands with heat Thixotropic materials become less viscous and more fluid under repeated pressure. 16 / 50 Category: Restorative 16) Tooth #16 has a grade IV furcation. How should it be managed? No treatment Resection of root Odontoplasty Hemisection Resection of the root is the most appropriate treatment for severe furcation involvement. 17 / 50 Category: Restorative 17) Which instrument is used to finish the buccal and lingual proximal walls? Gingival margin trimmer Chisel Excavator Enamel hatchet An enamel hatchet is designed for precise finishing of proximal walls. 18 / 50 Category: Restorative 18) A patient has white spots after removing orthodontic appliances. What is the best treatment? Fluoride varnish Restoration Reinforce oral hygiene Fluoride gel Reinforcing oral hygiene helps remineralize the enamel and prevent further decalcification. 19 / 50 Category: Restorative 19) What is the dentist's position when working on the buccal of quadrant 1 and palate of quadrant 2? 9 o'clock 6 o'clock 11-12 o'clock 8 o'clock The 9 o'clock position provides optimal access to both the buccal and palatal surfaces. 20 / 50 Category: Restorative 20) A patient complains of food impaction after an amalgam restoration. What is the likely cause? Occlusal trauma Lack of embrasure Overhanging restoration Open contact An open contact allows food to accumulate between teeth, causing impaction. 21 / 50 Category: Restorative 21) Which type of dentine is deposited in response to very deep caries? Secondary Reparative Reactionary Primary Reparative dentine forms in response to deep caries to protect the pulp. 22 / 50 Category: Restorative 22) What is the canine proportion if the lateral incisor is 5 mm? 5.3 4.2 6.4 3.1 The canine proportion is typically 1.6 times the width of the lateral incisor. 23 / 50 Category: Restorative 23) During post preparation, bleeding from the canal doesn’t stop. What is the next step? Wait and observe Place a temporary filling Immediate MTA placement Take a PA radiograph A PA radiograph helps assess the extent of the issue and guides further treatment. 24 / 50 Category: Restorative 24) What causes hydrogen gas formation when PVS impressions are poured immediately? Moisture contamination Air trapping Improper mixing Chemical reaction Hydrogen gas forms due to a chemical reaction between the PVS material and moisture. 25 / 50 Category: Restorative 25) After endo treatment on a tooth with a conservative MO access throw amalgam restoration, what is the next step? Fiber post and ceramic crown Composite core and crown Cast post and PFM Amalgam core and crown Amalgam is a reliable material for core restorations, especially in posterior teeth, as it provides good strength and resistance to occlusal forces. It can also be used effectively as a core for a crown, particularly when there is sufficient remaining tooth structure to support it. 26 / 50 Category: Restorative 26) A patient has white pigments around their teeth after removing orthodontic appliances. What is the most suitable action? Fluoride gel Fluoride varnish Reinforce oral hygiene instructions Restoration Reinforcing oral hygiene helps prevent further decalcification and improves overall dental health. 27 / 50 Category: Restorative 27) An amalgam restoration opposite a gold restoration causes pain. What is the management? Varnish in amalgam Change restoration Extraction No treatment Changing the restoration eliminates galvanic pain caused by dissimilar metals. 28 / 50 Category: Restorative 28) What is the most abundant component of dentin by weight? Organic material Inorganic material Collagen Water Inorganic material (hydroxyapatite) makes up the majority of dentin by weight. 29 / 50 Category: Restorative 29) An older patient presents with thickening around the apex of a tooth. What is the cause? Trauma Infection Physiologic remodeling Cementum deposition Continuous cementum deposition throughout life can cause thickening around the apex. 30 / 50 Category: Restorative 30) Which type of GIC is used for cementation? Type 4 Type 1 Type 2 Type 3 Type 1 GIC is specifically designed for cementation purposes. 31 / 50 Category: Restorative 31) Which material is the most ductile and malleable? Platinum Amalgam Titanium Gold Gold is highly ductile and malleable, making it ideal for dental restorations. 32 / 50 Category: Restorative 32) A pediatric patient swallows a clamp. How can this be prevented in the future? Avoid using clamps Use a rubber dam Use a smaller clamp Use dental floss Dental floss tied to the clamp prevents it from being swallowed or aspirated. 33 / 50 Category: Restorative 33) Which material undergoes an acid-base reaction during setting? Composite RMGI Glass ionomer Componer Glass ionomer sets through an acid-base reaction between the glass powder and polyacid liquid. 34 / 50 Category: Restorative 34) A deep class II restoration shows good margins but bone loss in the area. What is affected? Pulp Dentin Enamel Periodontium Bone loss indicates periodontal involvement, likely due to the restoration's proximity to the bone. 35 / 50 Category: Restorative 35) Why is water spray used during cavity preparation? To prevent particle inhalation To decrease dentine heating To clean the field To reduce dentinal fluid movement Water spray cools the tooth, preventing heat-induced damage to the pulp. 36 / 50 Category: Restorative 36) A patient has white pigments around their teeth after removing orthodontic appliances. What is the best action? Restoration Fluoride varnish Fluoride gel Emphasize oral hygiene instructions Emphasizing oral hygiene helps prevent further decalcification and improves overall dental health. 37 / 50 Category: Restorative 37) A patient wants to place a final crown with temporary cement to evaluate sensitivity. Which cement is best? Glass ionomer Non-eugenol zinc oxide Zinc phosphate Resin cement Non-eugenol zinc oxide is ideal for temporary cementation due to its biocompatibility. 38 / 50 Category: Restorative 38) How does GIC compare to composite in terms of thermal expansion? Poor coefficient of expansion Excellent coefficient of expansion Similar to enamel Similar to dentin GIC has a thermal expansion coefficient closer to tooth structure, reducing microleakage. 39 / 50 Category: Restorative 39) Why is composite better than GIC for certain restorations? Better aesthetics Higher strength Less microleakage Less marginal leakage Composite provides better marginal sealing, reducing the risk of leakage and secondary caries. 40 / 50 Category: Restorative 40) What is the best restoration for caries extending to the DEJ? RMGIC Composite Amalgam GIC RMGIC is ideal for caries near the DEJ due to its adhesion and fluoride release properties. 41 / 50 Category: Restorative 41) What happens during syneresis and imbibition of alginate? Expansion Absorption of water (imbibition) Shrinkage Loss of water (syneresis) Syneresis is the loss of water, while imbibition is the absorption of water, affecting alginate stability. 42 / 50 Category: Restorative 42) What type of retention is achieved with a stock tray and irreversible hydrocolloid? Chemical Micro-mechanical No retention Mechanical Mechanical retention is achieved through the tray's design and the material's properties. 43 / 50 Category: Restorative 43) What can impinging clamp pressure on tissue cause? Infection Swelling Bleeding Recession Excessive clamp pressure can lead to gingival recession over time. 44 / 50 Category: Restorative 44) Why is polyacrylate cement preferred over zinc phosphate? Strength Ease of use Cost-effectiveness Biocompatibility Polyacrylate is more biocompatible and less irritating to the pulp compared to zinc phosphate. 45 / 50 Category: Restorative 45) What is a primary component of titanium alloy? Palladium Silver Aluminum Gold Aluminum is a key component of titanium alloys, enhancing their strength and corrosion resistance. 46 / 50 Category: Restorative 46) A 52-year-old patient has a deep stained groove in tooth #36 with no softness. What is the best treatment? PRR No treatment Class I composite Fissure sealant If there is no softness or caries, no treatment is necessary. 47 / 50 Category: Restorative 47) Which restoration for posterior teeth is both aesthetic and durable? Low filler composite Amalgam High filler composite RMGI High filler composite provides strength and aesthetics, making it suitable for posterior teeth. 48 / 50 Category: Restorative 48) What is the most important characteristic of a special tray for final impressions? Rigidity Adaptability Strength Flexibility Rigidity ensures accurate and stable impressions, especially for final restorations. 49 / 50 Category: Restorative 49) A patient with a habit of scratching their gingiva has recession and root caries. What is the first treatment? Periodontal surgery Fluoride application GIC restoration Composite restoration GIC restoration is ideal for root caries due to its adhesion and fluoride release properties. 50 / 50 Category: Restorative 50) How many embrasures are there between two adjacent teeth? 3 4 1 2 There are two embrasures between adjacent teeth: one facial and one lingual. Your score is The average score is 72% Facebook Twitter 0% Restart quiz Please rate this exam and leave a comment with any notes or suggestions. Anonymous feedback Thank you for your feedback Send feedback
