Restorative Restorative SDLE MCQ | Part 1 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% 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) A pediatric patient swallows a clamp. How can this be prevented in the future? Use a rubber dam Use dental floss Avoid using clamps Use a smaller clamp Dental floss tied to the clamp prevents it from being swallowed or aspirated. 2 / 50 Category: Restorative 2) What is the dentist's position when working on the buccal of quadrant 1 and palate of quadrant 2? 6 o'clock 8 o'clock 11-12 o'clock 9 o'clock The 9 o'clock position provides optimal access to both the buccal and palatal surfaces. 3 / 50 Category: Restorative 3) What material is used for pouring casts? Die stone Wax Plaster Refractory material Die stone is the most common material for pouring casts due to its strength and accuracy. 4 / 50 Category: Restorative 4) Which type of GIC is used for cementation? Type 3 Type 4 Type 1 Type 2 Type 1 GIC is specifically designed for cementation purposes. 5 / 50 Category: Restorative 5) During post preparation, bleeding from the canal doesn’t stop. What is the next step? Place a temporary filling Take a PA radiograph Wait and observe Immediate MTA placement A PA radiograph helps assess the extent of the issue and guides further treatment. 6 / 50 Category: Restorative 6) Which restoration for posterior teeth is both aesthetic and durable? High filler composite Low filler composite Amalgam RMGI High filler composite provides strength and aesthetics, making it suitable for posterior teeth. 7 / 50 Category: Restorative 7) A patient wants to place a final crown with temporary cement to evaluate sensitivity. Which cement is best? Resin cement Glass ionomer Non-eugenol zinc oxide Zinc phosphate Non-eugenol zinc oxide is ideal for temporary cementation due to its biocompatibility. 8 / 50 Category: Restorative 8) A deep class II restoration shows good margins but bone loss in the area. What is affected? Pulp Periodontium Enamel Dentin Bone loss indicates periodontal involvement, likely due to the restoration's proximity to the bone. 9 / 50 Category: Restorative 9) 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. 10 / 50 Category: Restorative 10) What is the definition of a thixotropic material? A material that expands with heat A solid that becomes liquid under pressure A material that contracts with heat A liquid that becomes less viscous under pressure Thixotropic materials become less viscous and more fluid under repeated pressure. 11 / 50 Category: Restorative 11) Which material undergoes an acid-base reaction during setting? Glass ionomer RMGI Composite Componer Glass ionomer sets through an acid-base reaction between the glass powder and polyacid liquid. 12 / 50 Category: Restorative 12) A patient with a short root and periapical radiolucency needs isolation for #25. What is the best method? Clamp #26 and extend dam to #24 Extract and implant No need 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. 13 / 50 Category: Restorative 13) What causes hyperplasia on incisor tips and occlusal surfaces of molars? Tetracycline Trauma Fluorosis Metallic Fluorosis can cause enamel hyperplasia, leading to irregularities on tooth surfaces. 14 / 50 Category: Restorative 14) How does GIC compare to composite in terms of thermal expansion? Poor coefficient of expansion Similar to enamel Similar to dentin Excellent coefficient of expansion GIC has a thermal expansion coefficient closer to tooth structure, reducing microleakage. 15 / 50 Category: Restorative 15) Why is composite better than GIC for certain restorations? Less microleakage Better aesthetics Less marginal leakage Higher strength Composite provides better marginal sealing, reducing the risk of leakage and secondary caries. 16 / 50 Category: Restorative 16) What is the canine proportion if the lateral incisor is 5 mm? 5.3 3.1 4.2 6.4 The canine proportion is typically 1.6 times the width of the lateral incisor. 17 / 50 Category: Restorative 17) What is the best restoration for caries extending to the DEJ? Composite GIC Amalgam RMGIC RMGIC is ideal for caries near the DEJ due to its adhesion and fluoride release properties. 18 / 50 Category: Restorative 18) What can impinging clamp pressure on tissue cause? Recession Swelling Infection Bleeding Excessive clamp pressure can lead to gingival recession over time. 19 / 50 Category: Restorative 19) Why is polyacrylate cement preferred over zinc phosphate? Ease of use Cost-effectiveness Strength Biocompatibility Polyacrylate is more biocompatible and less irritating to the pulp compared to zinc phosphate. 20 / 50 Category: Restorative 20) Condensation of amalgam for 8 minutes results in: No change Easy to carve Residual mercury increases Amalgam will set Prolonged condensation causes the amalgam to set, making it difficult to manipulate. 21 / 50 Category: Restorative 21) A patient experiences pain during tooth preparation, even on the enamel layer. What is the likely cause? Enamel tufts Enamel spindle Enamel lamellae Rods Enamel spindles are extensions of odontoblasts into the enamel, which can cause sensitivity. 22 / 50 Category: Restorative 22) Which instrument is used to finish the buccal and lingual proximal walls? Enamel hatchet Chisel Excavator Gingival margin trimmer An enamel hatchet is designed for precise finishing of proximal walls. 23 / 50 Category: Restorative 23) What causes hydrogen gas formation when PVS impressions are poured immediately? Air trapping Moisture contamination Improper mixing Chemical reaction Hydrogen gas forms due to a chemical reaction between the PVS material and moisture. 24 / 50 Category: Restorative 24) What happens during syneresis and imbibition of alginate? Shrinkage Absorption of water (imbibition) Loss of water (syneresis) Expansion Syneresis is the loss of water, while imbibition is the absorption of water, affecting alginate stability. 25 / 50 Category: Restorative 25) An amalgam restoration opposite a gold restoration causes pain. What is the management? No treatment Change restoration Varnish in amalgam Extraction Changing the restoration eliminates galvanic pain caused by dissimilar metals. 26 / 50 Category: Restorative 26) 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. 27 / 50 Category: Restorative 27) Which material is the most ductile and malleable? Titanium Amalgam Platinum Gold Gold is highly ductile and malleable, making it ideal for dental restorations. 28 / 50 Category: Restorative 28) Which type of dentine is deposited in response to very deep caries? Reactionary Primary Secondary Reparative Reparative dentine forms in response to deep caries to protect the pulp. 29 / 50 Category: Restorative 29) Tooth #16 has a grade IV furcation. How should it be managed? Odontoplasty Hemisection Resection of root No treatment Resection of the root is the most appropriate treatment for severe furcation involvement. 30 / 50 Category: Restorative 30) What happens when zinc phosphate cement is used for cementation? Sensitivity Allergic reaction Discoloration Pulp necrosis Zinc phosphate can cause pulp necrosis due to its acidic nature and irritation. 31 / 50 Category: Restorative 31) What is the most important characteristic of a special tray for final impressions? Flexibility Adaptability Strength Rigidity Rigidity ensures accurate and stable impressions, especially for final restorations. 32 / 50 Category: Restorative 32) Why is water spray used during cavity preparation? To decrease dentine heating To reduce dentinal fluid movement To clean the field To prevent particle inhalation Water spray cools the tooth, preventing heat-induced damage to the pulp. 33 / 50 Category: Restorative 33) What increases the retention of pit and fissure sealants? No treatment Air abrasion Bonding agent Acid etching Acid etching creates microporosities in the enamel, improving sealant retention. 34 / 50 Category: Restorative 34) A patient with a habit of scratching their gingiva has recession and root caries. What is the first treatment? Composite restoration Fluoride application Periodontal surgery GIC restoration GIC restoration is ideal for root caries due to its adhesion and fluoride release properties. 35 / 50 Category: Restorative 35) What is a primary component of titanium alloy? Silver Palladium Aluminum Gold Aluminum is a key component of titanium alloys, enhancing their strength and corrosion resistance. 36 / 50 Category: Restorative 36) How does the radiopacity of a fiber post compare to flowable composite in an X-ray? Not different Same radiopacity Less radiopaque More radiopaque Fiber posts are less radiopaque than flowable composite, making them appear darker on X-rays. 37 / 50 Category: Restorative 37) How many embrasures are there between two adjacent teeth? 1 4 2 3 There are two embrasures between adjacent teeth: one facial and one lingual. 38 / 50 Category: Restorative 38) A patient has white spots after removing orthodontic appliances. What is the best treatment? Reinforce oral hygiene Restoration Fluoride varnish Fluoride gel Reinforcing oral hygiene helps remineralize the enamel and prevent further decalcification. 39 / 50 Category: Restorative 39) 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. 40 / 50 Category: Restorative 40) An older patient presents with thickening around the apex of a tooth. What is the cause? Cementum deposition Trauma Physiologic remodeling Infection Continuous cementum deposition throughout life can cause thickening around the apex. 41 / 50 Category: Restorative 41) A dentist uses latex gloves with polysulfide impression material, but the impression doesn’t set. Why? Insufficient mixing time Temperature issues Sulfur contamination Wrong paste proportion Sulfur in latex gloves can inhibit the setting of polysulfide impression material. 42 / 50 Category: Restorative 42) A 52-year-old patient has a deep stained groove in tooth #36 with no softness. What is the best treatment? PRR No treatment Fissure sealant Class I composite If there is no softness or caries, no treatment is necessary. 43 / 50 Category: Restorative 43) A deep carious lesion is indicated for extraction. Which of the following criteria helps in choosing the type of extraction? 3 site caries Percussion Gingival swelling in buccal Pulpal pain The extent of caries (3 site caries) is a critical factor in deciding the extraction method. 44 / 50 Category: Restorative 44) After endo treatment on a tooth with a conservative MO access throw amalgam restoration, what is the next step? Cast post and PFM Composite core and crown Amalgam core and crown Fiber post and ceramic 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. 45 / 50 Category: Restorative 45) A patient has white pigments around their teeth after removing orthodontic appliances. What is the most suitable action? Fluoride gel Restoration Fluoride varnish Reinforce oral hygiene instructions Reinforcing oral hygiene helps prevent further decalcification and improves overall dental health. 46 / 50 Category: Restorative 46) What is the term for the change in length per unit length of a material as temperature changes? Thermal conductivity Thermal diffusivity Thermal coefficient of expansion Thermal resistance The thermal coefficient of expansion measures how a material expands or contracts with temperature changes. 47 / 50 Category: Restorative 47) A patient with bruxism has a fractured amalgam. What is the best treatment option? Ceramic inlay Composite Cast restoration No treatment Cast restoration provides durability and strength, which is ideal for patients with bruxism. 48 / 50 Category: Restorative 48) A patient has white pigments around their teeth after removing orthodontic appliances. What is the best action? Fluoride varnish Fluoride gel Restoration Emphasize oral hygiene instructions Emphasizing oral hygiene helps prevent further decalcification and improves overall dental health. 49 / 50 Category: Restorative 49) What is the most abundant component of dentin by weight? Collagen Water Inorganic material Organic material Inorganic material (hydroxyapatite) makes up the majority of dentin by weight. 50 / 50 Category: Restorative 50) A patient complains of food impaction after an amalgam restoration. What is the likely cause? Open contact Occlusal trauma Overhanging restoration Lack of embrasure An open contact allows food to accumulate between teeth, causing impaction. Your score is The average score is 70% Facebook Twitter 0% Restart quiz Please rate this exam and leave a comment with any notes or suggestions. 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