Orthodontics R11 Orthodontics SDLE MCQ Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 0% 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394 Orthodontics R11 Orthodontics SDLE MCQ 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 / 94 Category: Orthodontics 1) What type of bite plane is used in Class II division 2 malocclusion? Anterior bite plate Posterior bite plate Inclined plane Flat plane Anterior bite plates help correct deep bites in Class II cases. 2 / 94 Category: Orthodontics 2) A patient has a reverse overjet of 6mm. What is the treatment? Headgear Camouflage orthodontics Functional appliance Orthognathic surgery Severe skeletal discrepancies require orthognathic surgery. 3 / 94 Category: Orthodontics 3) What is the camouflage treatment for Class II without crowding? Headgear Extraction upper 4 Functional appliance Extraction lower 4 Extraction of upper first premolars is preferred for Class II without crowding. 4 / 94 Category: Orthodontics 4) What defines pseudo-Class III malocclusion? Functional shift Skeletal Class 1 Molar Class 1 Genetic predisposition Pseudo-Class III is a dental malocclusion with a normal skeletal base. 5 / 94 Category: Orthodontics 5) A patient has a small ulceration distally after orthodontic treatment. What is the likely cause? Allergic reaction Infection Trauma Wire irritation Orthodontic wires often cause soft tissue irritation. 6 / 94 Category: Orthodontics 6) What problem is a chin cup used to treat? Deep bite Class III malocclusion Class II malocclusion Open bite Chin cups restrain mandibular growth in Class III cases. 7 / 94 Category: Orthodontics 7) What appliance is used for a retruded mandible? Face mask Rapid palatal expander Chin cup Functional appliances Functional appliances advance the mandible. 8 / 94 Category: Orthodontics 8) A patient in early mixed dentition with unilateral crossbite. What is the treatment? Dental expansion Headgear Skeletal expansion Delay treatment Skeletal expansion corrects unilateral crossbites early. 9 / 94 Category: Orthodontics 9) A 30-year-old with retained #53 and impacted #13 (poor prognosis). What is the treatment? Extract and suture Extract #13 and implant Leave #53 Crown on #53 Extraction and implant replace non-viable canines. 10 / 94 Category: Orthodontics 10) What is the typical malocclusion classification in cleft lip patients? Class II division 1 Class I Class II division 2 Class III Cleft lip patients often exhibit Class III malocclusion due to maxillary deficiency. 11 / 94 Category: Orthodontics 11) A patient has proclined upper incisors and retroclined lower incisors with overjet. What is the classification? Class I Class IV Class III Class II Proclined uppers and retroclined lowers are Class II features. 12 / 94 Category: Orthodontics 12) A patient with mobile teeth and root resorption after accelerated orthodontics. What is the cause? Infection Systemic disease Rapid forces Trauma Accelerated treatment with high forces risks root resorption. 13 / 94 Category: Orthodontics 13) What is the term for mesial resorption and distal bone deposition during tooth movement? Anchorage loss Pathological resorption Root remodeling Physiological tooth movement Physiological tooth movement involves bone remodeling. 14 / 94 Category: Orthodontics 14) If 75g force is used for tipping upper centrals, what force is needed for intrusion? 100g 75g 25g 125g Intrusion requires lighter forces (25-50g) to avoid root resorption. 15 / 94 Category: Orthodontics 15) A patient with external root resorption on tooth 5. What is the cause? Infection Trauma Genetic factors High orthodontic force Excessive force during orthodontics causes root resorption. 16 / 94 Category: Orthodontics 16) A healthy orthodontic patient complains of pain. What should be given? NSAID Antibiotics Local anesthetic Paracetamol Paracetamol is safer for mild orthodontic pain. 17 / 94 Category: Orthodontics 17) A patient has 26mm space available but 25mm required. What is the diagnosis? Crowding Spacing Bolton discrepancy None Excess space indicates spacing. 18 / 94 Category: Orthodontics 18) A 13-year-old with posterior crossbite. What is the treatment? No treatment Hass expansion Slow expansion Rapid palatal expansion Hass appliances are used for posterior crossbites. 19 / 94 Category: Orthodontics 19) An orthodontic wire irritates the patient. What is the solution? Adjust the wire Cut the wire Remove the appliance Apply wax Wax provides temporary relief from wire irritation. 20 / 94 Category: Orthodontics 20) A patient has a protrusive mandible, maxillary deficiency, crowding, and impacted canine. What is treated first? Crowding Maxillary deficiency Protrusive mandible Impacted canine Maxillary expansion addresses constriction and crowding. 21 / 94 Category: Orthodontics 21) A patient has a diastema. What is the likely cause? Trauma Low frenum attachment Microdontia Crowding High frenal attachments cause midline diastemas. 22 / 94 Category: Orthodontics 22) Which orthodontic movement causes more resorption in upper teeth? Rotation Extrusion Tipping Intrusion Intrusion of upper teeth often leads to greater root resorption. 23 / 94 Category: Orthodontics 23) A patient with generalized recession after 4 months of orthodontic treatment. What is the cause? Systemic disease Poor oral hygiene High force Thin biotype Excessive force leads to gingival recession. 24 / 94 Category: Orthodontics 24) An 8-year-old with overgrown mandible and constricted maxilla. What is treated first? Functional appliance No treatment Chin cup for mandible Maxillary expansion Maxillary expansion addresses constriction before mandibular growth modification. 25 / 94 Category: Orthodontics 25) A patient with 1mm gingival recession on lower incisors undergoing orthodontics. Which movement increases recession? Labial movement Lingual movement Intrusion Extrusion Labial movement of lower incisors worsens recession. 26 / 94 Category: Orthodontics 26) A patient needs serial extraction for severe crowding. What is the next step? Refer to orthodontist Extract as requested Monitor growth No treatment Orthodontic consultation ensures proper serial extraction planning. 27 / 94 Category: Orthodontics 27) A 14-year-old has space for right canine but not left. What is the treatment? No treatment Orthodontic alignment Canine extraction Fixed prosthesis Fixed prostheses replace missing or non-erupted canines. 28 / 94 Category: Orthodontics 28) What is a tongue retainer device used for? TMJ disorders Speech therapy Sleep apnea Bruxism Tongue retainers prevent airway obstruction in sleep apnea. 29 / 94 Category: Orthodontics 29) What method is used for space analysis in mixed dentition? Carey’s analysis Moyer’s analysis Bolton analysis Tanaka and Johnston Tanaka and Johnston predict space needs in mixed dentition. 30 / 94 Category: Orthodontics 30) What does SNB measure in cephalometrics? Maxillary position Dental inclination Vertical height Mandibular position SNB assesses the anteroposterior position of the mandible. 31 / 94 Category: Orthodontics 31) What type of force is ideal for orthodontic tooth movement? Light continuous Variable No force Heavy intermittent Light continuous forces are most physiological. 32 / 94 Category: Orthodontics 32) A patient complains of generalized pain 4 days after starting orthodontic treatment. What should be done? Reassure the patient Refer to prosthodontist Prescribe analgesics Adjust the appliance Initial orthodontic pain is normal and subsides within a week. 33 / 94 Category: Orthodontics 33) What is the ANB angle trend in Class II malocclusion? Increased Variable Decreased Normal Class II cases typically have higher ANB angles. 34 / 94 Category: Orthodontics 34) An osteoporotic patient wants orthodontic treatment. What force is recommended? Avoid treatment Regular Slow Fast Slow forces minimize bone damage in osteoporotic patients. 35 / 94 Category: Orthodontics 35) What is the effect of a large filling on orthodontic treatment? Delays treatment Causes tooth fracture Increases mobility Reduces tooth movement Large restorations weaken tooth structure, risking fracture. 36 / 94 Category: Orthodontics 36) What is the treatment for an adult with narrow maxilla and incisor crowding? Orthognathic surgery Distalization of molars Extraction of premolars Expansion without extraction Extraction of premolars creates space for alignment in crowded cases. 37 / 94 Category: Orthodontics 37) A patient with poor oral hygiene and white spots after debonding. What is the treatment? SRP Fluoride varnish Fluoride gel Antibiotics Fluoride varnish is effective for post-orthodontic white spots. 38 / 94 Category: Orthodontics 38) A 20-year-old patient with Class 2 malocclusion, 6mm overjet, and normal mandibular alignment. What is the treatment? Expansion Extraction upper 4 Extraction upper 5 Growth modification Extraction of upper first premolars is effective for reducing overjet. 39 / 94 Category: Orthodontics 39) A patient with open bite requests faster orthodontic treatment. What adjunctive procedure is recommended? CTG Gingivectomy Alveolar decortication Occlusal adjustment Decortication accelerates tooth movement via regional acceleratory phenomenon. 40 / 94 Category: Orthodontics 40) A patient with thin scalloped bone undergoes labial tooth movement. What is the risk? Root resorption Ankylosis Recession Mobility Thin biotypes are prone to gingival recession. 41 / 94 Category: Orthodontics 41) What appliance is used for mandibular deficiency? Twin block Face mask Headgear Bionator Twin blocks are functional appliances for mandibular deficiency. 42 / 94 Category: Orthodontics 42) A patient has subgingival orthodontic bands. What is the likely effect? Gingival growth Root resorption Tooth mobility Gingival recession Subgingival bands can cause gingival recession. 43 / 94 Category: Orthodontics 43) What causes unilateral crossbite during lateral tooth eruption? Abnormal swelling Tongue/cheek pressure Functional mandibular shift Abnormal chewing Functional shifts during eruption lead to unilateral crossbites. 44 / 94 Category: Orthodontics 44) How far should the film be placed during cephalometric imaging? 5 cm 20 cm 15 cm 10 cm Standard distance ensures accurate cephalometric measurements. 45 / 94 Category: Orthodontics 45) A 25-year-old patient with protruded upper anterior teeth and good lower arch alignment. What is the treatment? Headgear Functional appliance Extraction upper first premolars Expansion Extraction of upper first premolars retracts protruded upper incisors. 46 / 94 Category: Orthodontics 46) A patient has an ANB angle of -5°. What is the classification? Class I Class II Class III malocclusion None Negative ANB angles indicate Class III skeletal relationships. 47 / 94 Category: Orthodontics 47) A Class III malocclusion due to maxillary constriction. What appliance is used? W-arch Quad helix Bonded expander Banded expander Bonded expanders are effective for maxillary constriction. 48 / 94 Category: Orthodontics 48) White spots appear 2 weeks after debonding. What is the treatment? Fluoride varnish No treatment Fillings Fluoride gel Fluoride varnish reverses early demineralization. 49 / 94 Category: Orthodontics 49) A patient with red, inflamed left cheek during orthodontic treatment. What is the probable cause? Infection Stainless steel allergy Trauma Poor oral hygiene Allergic reactions to stainless steel components can occur. 50 / 94 Category: Orthodontics 50) A patient has impinging upper and lower incisors fully visible when smiling. What is the orthodontic solution? Extrude upper posteriors Extrude upper anterior Extrude lower posteriors Intrude lower anteriors Extruding lower posteriors opens the bite and reduces impingement. 51 / 94 Category: Orthodontics 51) What is the treatment for a gummy smile with 9mm incisor exposure at rest? Lip repositioning Botox Surgery Orthodontics Surgery is definitive for severe gummy smiles. 52 / 94 Category: Orthodontics 52) A pediatric patient with persistent thumb sucking. What is the treatment? Face mask Palatal crib appliance Tongue crib Hawley retainer Palatal cribs discourage thumb sucking. 53 / 94 Category: Orthodontics 53) A cephalometric analysis shows SNA 80°, SNB 70°, and ANB 11°. What is the diagnosis? Mandibular protrusion Maxillary protrusion Maxillary retrognathism Mandibular retrognathism Low SNB indicates mandibular retrognathism. 54 / 94 Category: Orthodontics 54) What is the treatment for Class 3 camouflage? Extraction upper 4 only Extraction lower 6 and upper 5 Extraction lower 4 and upper 5 No extraction needed Extraction of lower first premolars and upper second premolars is the standard approach for Class 3 camouflage. 55 / 94 Category: Orthodontics 55) A child with thumb sucking habit. What is the appropriate action? Refer to a psychologist Ignore the habit Give an appliance Educate parents Parental education is the first step for young children. 56 / 94 Category: Orthodontics 56) What is a tissue-borne maxillary expansion device? Hyrax appliance W-arch Haas appliance Quad helix Haas appliances are tissue-borne and used for maxillary expansion. 57 / 94 Category: Orthodontics 57) A patient complains of pain after starting orthodontics. What should be done? Refer to specialist Prescribe painkillers Adjust the appliance Reassure the patient Initial orthodontic pain is normal and temporary. 58 / 94 Category: Orthodontics 58) A patient with gummy smile and long maxilla. What is the treatment? Orthodontics No treatment Surgery Botox Surgical maxillary impaction corrects excessive gingival display. 59 / 94 Category: Orthodontics 59) What is the treatment for a single anterior crossbite? Surgery Removable appliance (Z-spring) Functional appliance Fixed appliance Z-springs correct anterior crossbites in removable appliances. 60 / 94 Category: Orthodontics 60) How often should rapid expansion be activated? Once a day Once a week Twice a day Every other day Rapid expansion requires daily activation for effective results. 61 / 94 Category: Orthodontics 61) Which crossbite should be corrected first? Posterior bilateral None Posterior unilateral Anterior Posterior unilateral crossbites affect function and should be prioritized. 62 / 94 Category: Orthodontics 62) A 2-year-old with thumb sucking. How is this managed? Orthodontic pacifier Behavioral therapy Wait until age 8 Palatal crib Thumb sucking is normal in toddlers and usually resolves by age 4. 63 / 94 Category: Orthodontics 63) A patient undergoing 36-month orthodontic treatment. Which teeth are most prone to root resorption? Lower canine Upper central incisor Lower central incisor Upper canine Upper central incisors are most susceptible to root resorption. 64 / 94 Category: Orthodontics 64) A 7-year-old with excessive mandibular growth and family history of prognathism. What is the management? Delay treatment Orthognathic surgery Fixed orthodontics Start treatment Early intervention is avoided due to unpredictable growth. 65 / 94 Category: Orthodontics 65) A patient with long face, narrow maxilla, posterior overeruption, and anterior open bite. What is the likely cause? Thumb sucking Tongue thrusting Mouth breathing Genetic factors Mouth breathing leads to vertical growth patterns and open bites. 66 / 94 Category: Orthodontics 66) What appliance retains crossbite correction after treatment? Quad helix Hawley retainer Fixed retainer Essix retainer Quad helix maintains expansion and alignment. 67 / 94 Category: Orthodontics 67) A patient with periodontal inflammation undergoes orthodontics. Where is the center of resistance? At the crown More apical At the root apex More coronal Inflamed periodontium shifts the center of resistance apically. 68 / 94 Category: Orthodontics 68) A patient with crowding proceeds with extraction. What is the next step? Refer to periodontist No extraction Consult orthodontist Extract all teeth at once Orthodontic consultation ensures proper treatment planning. 69 / 94 Category: Orthodontics 69) A patient has Class II molars bilaterally. What is the skeletal classification? Class II skeletal None Class III skeletal Class I skeletal Bilateral Class II molars indicate Class II skeletal malocclusion. 70 / 94 Category: Orthodontics 70) Pseudo-Class III malocclusion is characterized by: Molar Class 1 None Skeletal Class 1 Functional shift It is a dental malocclusion with normal skeletal relationships. 71 / 94 Category: Orthodontics 71) A patient complains of an extended orthodontic wire. What should be done? Cut the wire Bend the wire Wait for next appointment Remove the appliance Trimming the wire prevents soft tissue irritation. 72 / 94 Category: Orthodontics 72) A patient reports pain during eating 3 days after starting orthodontics. What is the advice? Stop treatment Prescribe analgesics Reassure the patient Adjust the appliance Early orthodontic discomfort resolves within a week. 73 / 94 Category: Orthodontics 73) An adult with retained #53 (good alignment, no resorption) and impacted #13 (poor prognosis). What is the treatment? Orthodontic alignment Crown on #53 Extract and implant Leave #53 Retained primary canines with good prognosis can be preserved. 74 / 94 Category: Orthodontics 74) Tooth 36 is missing, and 37 is mesially tilted. What is needed before implant placement? Bone grafting No preparation Orthodontic uprighting Extraction of 37 Uprighting tilted molars ensures proper implant positioning. 75 / 94 Category: Orthodontics 75) A patient with multiple root resorptions after rapid orthodontic treatment. What is the cause? Infection Trauma Genetic factors Excessive force Rapid movement with high force causes root resorption. 76 / 94 Category: Orthodontics 76) A pediatric patient with unerupted permanent canine (poor prognosis) and intact primary canine. What is the treatment? Crown on primary canine Extract primary canine Extract and close space Leave primary canine Primary canines are retained if permanent successors are non-viable. 77 / 94 Category: Orthodontics 77) What is the treatment for Class 2 camouflage? Extraction lower 4 Functional appliance Headgear Extraction upper 4 Extraction of upper first premolars is common for Class 2 camouflage. 78 / 94 Category: Orthodontics 78) Upper central incisors are normal, but lower centrals are deep behind the uppers, causing palatal problems. What is this called? Open bite Bite impingement Crossbite Deep bite Bite impingement occurs when lower incisors traumatize the palate. 79 / 94 Category: Orthodontics 79) A 13-year-old with anterior open bite, posterior crossbite, and thumb sucking. What is the treatment? Hass appliance Quad helix Tongue crib Hawley retainer Hass appliances expand the maxilla and correct crossbites. 80 / 94 Category: Orthodontics 80) Why is a quad helix appliance beneficial? No patient activation needed Easy to clean Less discomfort Faster treatment Quad helix appliances are passive and require no patient cooperation. 81 / 94 Category: Orthodontics 81) A decreased ANB angle indicates which class? Class II Class III Class I None Lower ANB values correlate with Class III malocclusion. 82 / 94 Category: Orthodontics 82) A patient with ceramic braces and coated wire develops anterior abfraction. What is the cause? Poor oral hygiene Allergic reaction Using anterior teeth for grinding Bruxism Ceramic braces increase brittleness, leading to abfraction under stress. 83 / 94 Category: Orthodontics 83) A patient has Class I molar on the left and Class II on the right. What is the molar classification? Class I subdivision left Class II subdivision right Class II subdivision left Class I subdivision right Asymmetric molar relationships are classified as subdivisions. 84 / 94 Category: Orthodontics 84) What is the most common feature of Class I malocclusion? Open bite Crowding Spacing Deep bite Crowding is the hallmark of Class I malocclusion. 85 / 94 Category: Orthodontics 85) A 21-year-old with embedded anterior deep bite. What is the treatment? Camouflage Extrude posterior Intrude upper anterior Orthognathic surgery Extruding posterior teeth helps correct deep bites. 86 / 94 Category: Orthodontics 86) What is the most prevalent molar classification in the general population? Class I Class II division 2 Class II division 1 Class III Class I malocclusion is the most common. 87 / 94 Category: Orthodontics 87) What does a periodontist perform to expedite orthodontic treatment? Bone grafting Frenectomy Gingivectomy Alveolar decortication Decortication stimulates bone remodeling for faster movement. 88 / 94 Category: Orthodontics 88) A 6-year-old with unilateral posterior crossbite and midline shift. What is the treatment? Slow expansion (2mm per week) Rapid expansion Functional appliance No treatment Slow expansion corrects crossbite in mixed dentition. 89 / 94 Category: Orthodontics 89) What occurs during mesial tooth movement? Uniform resorption Mesial resorption, distal deposition Distal resorption, mesial deposition No change Tooth movement involves bone remodeling on pressure/tension sides. 90 / 94 Category: Orthodontics 90) A patient has white spots after orthodontics. What should they use? Fluoride gel Mouthwash Toothpaste Fluoride varnish Fluoride varnish remineralizes white spot lesions. 91 / 94 Category: Orthodontics 91) A 13-year-old with crossbite and skeletal deficiency. What is the treatment? Rapid expansion weekly Rapid expansion (0.5mm daily) Slow expansion daily Slow expansion weekly Rapid expansion is used for skeletal deficiencies in adolescents. 92 / 94 Category: Orthodontics 92) A patient has overjet, inverted lower lip, deep labiomental fold, and decreased SNB. What is the diagnosis? Lower deficiency Microdontia Upper prognathism None Low SNB suggests mandibular deficiency. 93 / 94 Category: Orthodontics 93) Where is the center of rotation in multirooted teeth? At the CEJ At the furcation At the root apex Above the bifurcation The furcation is the pivot point for multirooted teeth. 94 / 94 Category: Orthodontics 94) A patient with Class II malocclusion and reduced lower face height. How is this managed? Posterior bite plate Cervical pull headgear Anterior bite plate Functional appliance Anterior bite plates open the bite and improve lower face height. Your score is The average score is 71% 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
