Orthodontics Orthodontics SDLE MCQ | Part 3 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 0% 1234567891011121314151617181920212223 Orthodontics Orthodontics SDLE MCQ | Part 3 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 / 23 Category: Orthodontics 1) A patient has Class III malocclusion with maxillary hypoplasia. What is the best treatment? Facemask Mouthguard No treatment Headgear A facemask is effective for correcting maxillary hypoplasia in Class III cases. 2 / 23 Category: Orthodontics 2) A patient has an ulcer at the end of the buccal mucosa due to orthodontic treatment. What is the most likely cause? Infection Normal adjustment pain Broken bracket Extended wire An extended wire is a common cause of buccal mucosal ulcers. 3 / 23 Category: Orthodontics 3) A mother is concerned about her child’s retruded mandible. What measurement determines mandibular position? SN-MP ANB SNA SNB SNB is used to assess the position of the mandible. 4 / 23 Category: Orthodontics 4) A patient has Class II malocclusion and lower crowding of 9 mm. What is the best treatment? Extract upper first premolars and lower second premolars Extract upper second premolars and lower first premolars Orthognathic surgery No extraction Extracting upper first premolars and lower second premolars is a common treatment for Class II with crowding. 5 / 23 Category: Orthodontics 5) Which appliance is tooth-borne? Twin block Facemask Hyrax Quad helix The Hyrax appliance is a tooth-borne expander. 6 / 23 Category: Orthodontics 6) An 11-year-old patient has Class II skeletal malocclusion due to a retruded mandible. What is the best appliance? Functional appliance Headgear Facemask Fixed orthodontic appliance Functional appliances are effective for enhancing mandibular growth. 7 / 23 Category: Orthodontics 7) A 2-year-old child sucks their thumb during sleep. What is the best management? No treatment Use a fixed habit-breaking appliance Use a removable habit-breaking appliance Defer treatment until age 8 Thumb-sucking in very young children is normal and does not require immediate treatment. 8 / 23 Category: Orthodontics 8) A 12-year-old patient has Class III malocclusion with a normal mandibular position. What is the best treatment? Surgery Slow expansion Rapid expansion No treatment Rapid expansion is effective for Class III with normal mandibular position. 9 / 23 Category: Orthodontics 9) A 7-year-old patient has Class III malocclusion with a normal mandibular position. What is the best treatment? Rapid expansion Slow expansion No treatment Surgery Slow expansion is preferred for young patients with Class III malocclusion. 10 / 23 Category: Orthodontics 10) A patient has plaque, calculus, and tooth destruction. What is needed after orthodontic treatment? Scaling and root planing No treatment Root canal therapy Crowns Crowns are necessary to restore severely destructed teeth. 11 / 23 Category: Orthodontics 11) A patient has a diastema caused by a frenal attachment. What is the best treatment? Orthodontic treatment Surgery No treatment Frenectomy Frenectomy is necessary to address the frenal attachment causing the diastema. 12 / 23 Category: Orthodontics 12) A pediatric patient has impingement of lower teeth in the palate. What is the best management? Use a removable appliance Use a fixed appliance No treatment Refer to orthodontics Orthodontic referral is necessary for proper management. 13 / 23 Category: Orthodontics 13) A patient wants to finish orthodontic treatment quickly. What is the best option? Accelerated orthodontics Cortical perforation Surgery No treatment Cortical perforation can accelerate tooth movement. 14 / 23 Category: Orthodontics 14) A 5-year-old patient has a crossbite. What is the best management? Use a removable appliance No treatment Use a fixed appliance Wait for mixed dentition Treatment is often deferred until mixed dentition in young patients. 15 / 23 Category: Orthodontics 15) A 9-year-old patient has crowding in the lower jaw. Which tooth is most likely malaligned? First premolar Canine Lateral incisor Second premolar Lateral incisors are often malaligned in cases of crowding. 16 / 23 Category: Orthodontics 16) An adult patient needs uprighting of a mesially tilted molar. Why does this take more time? Reestablishing occlusion Tooth size Bone density Patient age Reestablishing occlusion is the primary reason for the extended treatment time. 17 / 23 Category: Orthodontics 17) A patient has a unilateral crossbite with midline shift and bilateral crossbite. What is the best treatment? Bilateral expansion Surgery Unilateral expansion No treatment Bilateral expansion is necessary to correct the midline shift and crossbite. 18 / 23 Category: Orthodontics 18) A patient has ANB = 6. What is the classification? Class II Normal occlusion Class I Class III ANB = 6 indicates Class II malocclusion. 19 / 23 Category: Orthodontics 19) A child has Class II malocclusion and mandibular hyperdivergence. What is the best treatment? No treatment Functional appliance High-pull headgear Facemask High-pull headgear is effective for managing hyperdivergent Class II cases. 20 / 23 Category: Orthodontics 20) A 22-year-old patient has Class II malocclusion with a good facial profile and well-aligned lower teeth. What is the best treatment? Orthognathic surgery Extract upper first premolars No treatment Functional appliance Extracting upper first premolars is a common treatment for Class II with good facial profile. 21 / 23 Category: Orthodontics 21) A patient with a quad helix appliance has tongue irritation. What is the best management? Adjust the appliance Prescribe medication Remove the appliance Reassure the patient Reassuring the patient is the first step, as tongue irritation is common initially. 22 / 23 Category: Orthodontics 22) A 5-year-old patient has a lateral shift of the mandible when closing. What is the best management? No treatment Expansion Wait for permanent teeth Disking interfering tooth Disking the interfering tooth can correct the lateral shift. 23 / 23 Category: Orthodontics 23) What is the best management for pseudo Class III malocclusion? Lip bumper No treatment Protraction of the maxilla Retraction of the mandible Retracting the mandible can correct pseudo Class III malocclusion. 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