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 generation of flowable composite can be used as restorative material? \nSelect and explain. \nA. 1st generation, B. 2nd generation, C. 3rd generation, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Because ﬂowable composites were developed with speciﬁc handling characteristics in mind,their\xa0 range of advertised clinical uses is quite varied.\nWithin the range of materials classiﬁed as ﬂowable\xa0 composites, those with lower ﬁller content (often referred as generation 1 ﬂowable composites) are\xa0 intended for uses such as pit-and-ﬁssure sealants or small anterior restorations.\xa0\nThose with higher\xa0ﬁller content (also referred as generation 2 ﬂowable composites) have been suggested for use in\xa0Classes I, II, III, IV, and V restorations, although they are better suited only for very conservative\xa0 restorative procedures.\xa0\nIn general, the mechanical properties of ﬂowable composites are inferior to\xa0 those of standard hybrid composites.', 'role': 'assistant'}]