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': 'Which of the following are the most important proteinases involved in destruction of the periodontal tissues? \nSelect and explain. \nA. Hylauronidase, B. Matrix metalloproteinases, C. Glucuronidase, D. Serine proteinases', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Matrix metalloproteinases are the most important proteinases involved in the destruction of periodontal tissues.', 'role': 'assistant'}]