Restorative Restorative SDLE MCQ | Part 2 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 2 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 fourth dental material category besides polymers, metals, and porcelain? Cement Stone Alginate Composite Composite is a distinct category of dental materials, combining resin and filler particles. 2 / 50 Category: Restorative 2) What happens when filler content in a restoration is increased? Increased shrinkage Decreased strength Increased hydrophilicity Increased wear resistance Higher filler content improves wear resistance and durability of the restoration. 3 / 50 Category: Restorative 3) A patient has a small amalgam restoration in #16 that needs replacement. What is the best option? Cast ceramic Gold Glass ionomer Composite Composite is the most aesthetic and functional option for replacing small amalgam restorations. 4 / 50 Category: Restorative 4) What does chronic fluoride exposure primarily affect? Skeletal structures Both None Dental structures Chronic fluoride exposure primarily affects dental structures, causing fluorosis. 5 / 50 Category: Restorative 5) A 60-year-old patient's radiograph shows increased cementum deposition compared to a 25-year-old radiograph. What is the cause? Increased alveolar bone thickness Decreased enamel thickness Decreased dentin thickness Increased cementum deposition Cementum deposition increases with age, leading to thicker cementum layers. 6 / 50 Category: Restorative 6) How can stone setting be accelerated without compromising quality? Increase powder/liquid ratio Reduce mixing time Hot tap water Slurry water Hot tap water accelerates the setting reaction of stone without affecting its properties. 7 / 50 Category: Restorative 7) What material is used for flasking casts? Wax Refractory material Die stone Plaster Die stone is commonly used for flasking due to its strength and accuracy. 8 / 50 Category: Restorative 8) A broken tooth cannot accommodate a rubber dam. What is the best alternative? No isolation Use a clamp Cotton roll isolation Place on adjacent teeth Placing the rubber dam on adjacent teeth ensures proper isolation for the broken tooth. 9 / 50 Category: Restorative 9) What is the strongest phase in amalgam? Gamma 1 Beta Gamma 2 Gamma The gamma phase is the strongest and most stable phase in amalgam. 10 / 50 Category: Restorative 10) A resin composite restoration has 1 mm of remaining dentin thickness. What liner should be used? Calcium hydroxide liner RMGIC base No liner Both Using both calcium hydroxide and RMGIC provides pulp protection and a stable base. 11 / 50 Category: Restorative 11) Which impression material is reversible? PVS Agar Alginate Polysulfide Agar is a reversible hydrocolloid, meaning it can transition between gel and sol states. 12 / 50 Category: Restorative 12) A patient experiences pain when clenching after a class I amalgam restoration. What is the likely cause? High point contact Over-contoured restoration Under-contoured restoration Galvanic reaction High point contact causes pain during clenching due to excessive occlusal pressure. 13 / 50 Category: Restorative 13) What measures the modulus of elasticity? Hardness Resilience Toughness Brittleness Resilience measures a material's ability to absorb energy and return to its original shape. 14 / 50 Category: Restorative 14) A mild class I amalgam on a premolar needs replacement. What is the best option? Amalgam No treatment Composite Crown Amalgam is still a viable option for mild restorations due to its durability and cost-effectiveness. 15 / 50 Category: Restorative 15) What are the components of preventive resin restorations? RMGI Componer Composite Glass ionomer Preventive resin restorations primarily use composite due to its aesthetic and adhesive properties. 16 / 50 Category: Restorative 16) Which approach is more esthetic for a class III restoration? Lingual Both Facial None A lingual approach is often more esthetic for class III restorations due to visibility. 17 / 50 Category: Restorative 17) In a deep cavity, where should decay removal begin to preserve pulp health? Dentin first Enamel first Floor first Axial wall first Starting with the axial wall reduces the risk of pulp exposure and preserves pulp health. 18 / 50 Category: Restorative 18) What is atraumatic restorative treatment (ART)? Surgical intervention Microabrasion Conservative treatment No treatment ART focuses on minimally invasive techniques to remove caries and restore teeth. 19 / 50 Category: Restorative 19) Which clamp is used for an upper molar? W2 W8 W7 W4 The W8 clamp is specifically designed for upper molars, providing secure retention. 20 / 50 Category: Restorative 20) Which cement requires slow mixing to reach the desired consistency? Zinc phosphate Resin Polycarboxylate GIC Zinc phosphate requires slow mixing to control the exothermic reaction and achieve proper consistency. 21 / 50 Category: Restorative 21) What is the characteristic setting reaction of PVS? Polymerization Cross-linking Condensation Addition PVS sets through an addition reaction, which is more stable and predictable. 22 / 50 Category: Restorative 22) What is the cervico-occlusal length of a molar? 7.5 mm 10.5 mm 9.5 mm 8.5 mm The cervico-occlusal length of a molar is typically around 7.5 mm. 23 / 50 Category: Restorative 23) A patient wants to replace an amalgam restoration with 2 mm of remaining dentin. What liner should be used? GIC Calcium hydroxide No liner RMGIC With 2 mm of remaining dentin, no liner is necessary as the dentin provides sufficient protection. 24 / 50 Category: Restorative 24) What type of wear is indicated by islands of amalgam surrounded by worn tooth structure? Attrition Abrasion Erosion Abfraction Erosion causes localized wear, leaving islands of restorative material like amalgam. 25 / 50 Category: Restorative 25) A patient has an overhanging amalgam restoration with no symptoms. What is the best action? Monitor No treatment Remove overhang Restoration Removing the overhang prevents periodontal issues and improves oral health. 26 / 50 Category: Restorative 26) A 15-year-old patient with pain and radiolucency under #46 wants extraction, but the mother is unsure. What is the best action? Ask for parental consent Do the patient's desire No treatment Refuse extraction Parental consent is required for minors, and the dentist should discuss options with both parties. 27 / 50 Category: Restorative 27) What is the best restoration for a class V cavity in a patient with Sjogren's syndrome? Amalgam Composite GIC RMGIC GIC is ideal for patients with Sjogren's syndrome due to its moisture tolerance and fluoride release. 28 / 50 Category: Restorative 28) Which tooth is most prone to caries? Maxillary second molar Mandibular second molar Maxillary first molar Mandibular first molar The mandibular first molar is the most prone to caries due to its deep pits and fissures. 29 / 50 Category: Restorative 29) How can alginate impression setting be accelerated for a gagging patient? Reduce powder/liquid ratio Increase mixing time Cold water Hot water Hot water accelerates the setting of alginate, reducing the time the impression material is in the mouth. 30 / 50 Category: Restorative 30) What is the best method to diagnose interproximal caries? Transillumination Bitewing Periapical radiograph Clinical examination Bitewing radiographs provide clear visualization of interproximal caries. 31 / 50 Category: Restorative 31) What is the advantage of using spherical particles in dental amalgam? All of the above Less residual mercury Easier to condense Higher strength Spherical particles in amalgam improve condensation, strength, and reduce residual mercury, making them superior 32 / 50 Category: Restorative 32) A crown has a space between the tooth and margin. What can this cause? All of the above Crown fracture Dissolution of cement Prone to caries A space between the crown and tooth can trap debris, leading to caries. 33 / 50 Category: Restorative 33) Which cement has the potential for fluoride release? Zinc phosphate Resin cement Zinc phosphosilicate Polycarboxylate Zinc phosphosilicate cement releases fluoride, providing anticariogenic benefits. 34 / 50 Category: Restorative 34) Why does a pin in an amalgam restoration fracture? All of the above Incorrect pin placement Excessive force Poor material quality Pin fracture can result from multiple factors, including placement, force, and material quality. 35 / 50 Category: Restorative 35) A 62-year-old patient has posterior recession and arrested root caries. What is the best treatment? GIC restoration Composite restoration Systemic fluoride Topical fluoride GIC restoration is ideal for arrested root caries due to its adhesion and fluoride release. 36 / 50 Category: Restorative 36) How can the working time of zinc oxide be increased? Use a faster-setting cement Reduce mixing time Mix on a cool glass slab Increase powder/liquid ratio Mixing on a cool glass slab slows the setting reaction, extending the working time. 37 / 50 Category: Restorative 37) What type of collagen is present in the pulp during development? Type 4 Type 1 Type 3 Type 2 Type 3 collagen is the primary collagen type in the pulp during development. 38 / 50 Category: Restorative 38) A class I restoration with deep caries has 0.5 mm of remaining dentin thickness. What base should be used? GIC Zinc oxide amalgam RMGIC RMGIC is ideal for deep caries with minimal dentin thickness due to its strength and fluoride release. 39 / 50 Category: Restorative 39) Which clamp is used for a class V restoration? A12 W8 212 A13 The 212 clamp is designed for class V restorations, providing optimal retention and stability. 40 / 50 Category: Restorative 40) What causes a grainy impression when moisture contaminates the powder? Grainy impression Tear in impression Chalky cast Distorted impression Moisture contamination leads to a grainy texture in the impression material. 41 / 50 Category: Restorative 41) How should carbide burs be evaluated for survival and effectiveness? Low speed out of oral cavity High speed out of oral cavity High speed before tooth contact Low speed before tooth contact Testing burs at high speed before tooth contact ensures their effectiveness and longevity. 42 / 50 Category: Restorative 42) What happens if alginate is left under a wet towel for an hour before pouring? Shrinkage Expansion Imbibition Syneresis Imbibition causes the alginate to absorb water, leading to dimensional changes. 43 / 50 Category: Restorative 43) Why is a cool glass slab recommended for mixing zinc oxide? Improve consistency Reduce exothermic reaction Shorten setting time Increase solubility A cool glass slab slows the setting reaction, allowing more working time. 44 / 50 Category: Restorative 44) What is the purpose of a liner in a casting ring? Prevent shrinkage Allow uniform expansion Increase strength Reduce porosity A liner allows uniform expansion of the investment material during casting. 45 / 50 Category: Restorative 45) What is the definition of resilience? Ability to absorb energy Hardness Brittleness Resistance to fracture Resilience refers to a material's ability to absorb energy without permanent deformation. 46 / 50 Category: Restorative 46) A class V restoration has less than 0.5 mm of remaining dentin thickness. What liner should be used? RMGIC GIC Zinc oxide Calcium hydroxide GIC provides a protective barrier and adhesion for deep class V restorations. 47 / 50 Category: Restorative 47) A class I amalgam restoration on a lower molar has a fractured cusp. What is the likely cause? High point contact Under-contoured restoration Over-contoured restoration Undermined tooth structure Undermined tooth structure due to caries or improper preparation can lead to cusp fracture. 48 / 50 Category: Restorative 48) What is the dentist's position when working on teeth #41 and #31? 9 o'clock 12 o'clock 7 o'clock 11 o'clock The 12 o'clock position provides optimal access to the mandibular anterior teeth. 49 / 50 Category: Restorative 49) What causes linear lesions on the facial cervical third of teeth? Abfraction Erosion Attrition Abrasion Abrasion causes linear lesions due to mechanical wear, often from brushing or foreign objects. 50 / 50 Category: Restorative 50) Which type of GIC is used as a luting agent? Type 1 Type 3 Type 4 Type 2 Type 1 GIC is specifically designed for cementation and luting purposes. Your score is The average score is 73% Facebook Twitter 0% Restart quiz Please rate this exam and leave a comment with any notes or suggestions. 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