This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'A 6 year old female child reported with a chief complaint of proclined upper anteriors. Parents give a history of prolonged bottle-feeding and a persistent thumb sucking habit. Clinical examination reveals anterior open bite with proclined upper anterior and retroclined lower anterior teeth and associated tongue thrusting.\nThe tongue thrust seen in this case is: \nSelect and explain. \nA. Retained infantile swallow, B. Simple tongue thrust, C. Complex tongue thrust, D. Compound tongue thrust', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Simple Tongue Thrusting\nSimple tongue thrusting is also called teeth-together\xa0swallow. It is associated with well-circumscribed open\xa0bite in the anterior region. During swallowing in this\xa0type of tongue thrusting, there is normal contact in the\xa0posterior region. Posterior teeth also show good intercuspation.\xa0Tongue is placed forward to help anterior lip\xa0seal. Hyperactive mentalis activity associated with labioversion\nof maxillary incisors will be seen.\nTreatment of simple tongue thrusting: If there is excessive\xa0labioversion, the teeth has to be retracted first, if it is a\xa0case of simple tongue thrusting. Swallowing exercises\xa0should be taught along with the appliance to the patients.', 'role': 'assistant'}]