<prompt> Dental fluorosis is best seen in:Central Lateral IncisorsCentral Incisors 1st Molars1st 2nd MolarsCanines  <response>: Dental fluorosis Occurs when excess fluoride is ingested during first 7 years of the years of tooth calcification. MC source is drinking water. Optimal level of fluorine intake is 0.5-0.8 ppm; Acceptable level of intake is 1-2 ppm. Dental fluorosis occurs when 1.5 mglitre levels of fluorine is taken. Characterized by Mottling, which is best seen on Upper central Incisors 1st molar. - Skeletal fluorosis occur when fluorine intake is bw 3-6ppm. - Crippling fluorosis if intake is 10ppm. 