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': 'Three mix MP triple antibiotic paste consists of \nSelect and explain. \nA. Ciproflox + cephixime + Minocycline, B. Norflox+ tinidazole+cephixime, C. Ciproflox + metronidazole +Minocycline, D. Norflox + Cehphixime +Minocycline', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Triple antibiotic paste\n\nConsists of metronidazole, ciprofloxacin, and minocycline in a macrogol/propylene glycol ointment.\nIt is inserted into canal with a sterile Lentulo spiral and left in the canal for 2-4 weeks.\nAdvantages:\xa0 -\n\n\nVery effective in elimination of intracanal microbes\nBroad spectrum action\nEasy to prepare as ingredients are easily prepared\n\n\nDisadvantages of triple AB paste:\n\n\nDifficult to test the antimicrobial effectiveness in endodontic models due to absence of an inactivator to prevent the carryover effect.\nCombination of bactericidal and bacteriostatic antibiotic is not rational scientifically\nTetracycline analogs like minocycline can cause discoloration of tooth due to diffusion into dentinal tubules. Hence the mix should never be left in the coronal pulp chamber', 'role': 'assistant'}]