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': 'Study carried out among children of around 12 year age group in an orphan house with less carbohydrate diet is: \nSelect and explain. \nA. Hopewood house study, B. Vipeholm study, C. Turku study, D. Tristan da Cunha', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The observational studies like Hopewood House study have played a crucial role in determining the role of dietary sugars in dental caries etiology.\xa0\nThe study were done on orphan children. In these observational studies, the relationship between the disease (dental caries) and possible causative and confounding factors (sugar consumption, frequency of consumption) were observed.\nIn interventional studies like Vipeholm studies and Turku sugar studies, diets of groups of people were purposefully altered and the effect of this intervention observed.\xa0\nThere is vast amount of data on the role of sugar consumption in diet and the frequency of its consumption on dental caries.\n\nPediatric dentistry principles and practice. MS Muthu and Sivakumar\xa0 chapter 19', 'role': 'assistant'}]