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 24 year old male patient complains of yellowish discoloration of the teeth. Intra-oral examination reveals generalized grade 1 tetracycline stains and proximal caries was present with 22. Composite restoration in this patient is delayed for atleast _____ after bleaching. \nSelect and explain. \nA. 3 days, B. 1 week, C. 10 days, D. 1 month', 'role': 'user'}, {'content': 'Answer: B \nExplanation: With all bleaching techniques, a transitory decrease occurs in the potential bond strength of composite when it is applied\xa0to bleached enamel and dentin.\xa0This reduction\xa0in\xa0bond strength results from residual oxygen or peroxide residue in\xa0the tooth that inhibits the setting of the bonding resin, precluding adequate resin tag formation in the etched enamel. No\xa0loss\xa0of\xa0bond\xa0strength\xa0is noted, if\xa0the\xa0composite\xa0restorative treatment\xa0is\xa0delayed at least\xa01\xa0week\xa0after\xa0cessation of\xa0any bleaching.\nReference-\xa0 Sturdevant 6th ed Pg-310', 'role': 'assistant'}]