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 41 year old male complains of senstivity to cold in right lower back tooth region. Intraoral examination reveals caries in relation to 46. IOPA examination reveals deep dentinal caries not involving the pulp. In selecting a dental base for this patient, the dentist should give greatest consideration to which of the following? \nSelect and explain. \nA. The biocompatibility, B. The strength of the base, C. The thickness of the remaining dentin, D. The hardness of the base', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The thermal conductivities and thermal diffusivities\xa0of\xa0cementing\xa0materials\xa0(glass\xa0ionomer,\xa0zinc\xa0phosphate\xa0and composite) compare favorably with these tissues, in\xa0contrast\xa0with\xa0the\xa0markedly\xa0higher\xa0values\xa0for\xa0metallic restorative\xa0materials.\xa0Thus, when\xa0the\xa0remaining\xa0dentin between the cavity and the pulp is too thin to provide sufficient thermal protection, an additional layer of an insulating base material should be placed.\nReference-Phillips Ed 12th\xa0 pg-40', 'role': 'assistant'}]