This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral Cavity, Subject name: Surgery
[{'content': 'Cyst coming from an unerupted tooth is \nSelect and explain. \nA. Dentigerous cyst, B. Odontogenic keratocysts, C. Radicular cyst, D. Gorlin cysts', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Dentigerous cystRef: Radiopedia.org. Prof Gaillard et al.DENTAL CYST (Radicular or periodontal cyst or Periapical cyst)DENTIGEROUS CYST (Follicular odontoma or Follicular cysts)Most common Odontogenic cyst2nd MC odontogenic CystDevelops at the apex of chronically infected tooth with necrotic pulp'(root of normally erupted tooth)Associated with unerupted permanent toothLined by stratified squamous epitheliumLined by non-keratinizing squamous epitheliumMost common in middle ageMost common in 2nd or 3rd decadeMost common in upper jawMost common in Lower third Molar tooth (Mandible 3rd molar)2nd MC - Maxillary 3rd molar (upper)", 'role': 'assistant'}]