This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
Dental fluorosis is best seen in 
Select and explain. 
A. Central and lateral incisors, B. Central incisors & 1st molars, C. 1st and 2nd molars, D. Canines
B: Central incisors & 1st molars
Answer: B: Central incisors & 1st molars 
Explanation: Dental fluorosis occurs when excess fluoride is ingested during first 7 years of life (years of tooth calcification) It occurs at levels above 1.5 mg/litre intake. It is characterized by "Mottling" Which is best seen on incisors of upper jaw Ref: Park 25th edition Pgno : 682 Ref:Park's Textbook of Preventive and Social Medicine 25th Ed Pgno : 682