Original sentence: Although fluoridation can cause dental fluorosis, which can alter the appearance of developing teeth or enamel fluorosis, the differences are mild and usually not an aesthetic or public health concern.However this was based on older studies which failed to control for numerous variables, such as increasing sugar consumption as well as other dental strategies.Most European countries have experienced substantial declines in tooth decay, though milk and salt fluoridation is widespread in lieu of water fluoridation.Water fluoridation is the controlled adjustment of fluoride to a public water supply to reduce tooth decay
Edited sentence: Although fluoridation can cause dental fluorosis, which can alter the appearance of developing teeth or enamel fluorosis, the differences are mild and usually not considered to be of aesthetic or public health concern.Most European countries have experienced substantial declines in tooth decay without its use, however milk and salt fluoridation is widespread.The evidence quality was poor.Water fluoridation is the controlled addition of fluoride to a public water supply to reduce tooth decay