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