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