molars as they are called start erupting when the child is 12 to 15 months old. the permanent molars which are eight in number, four each on upper and lower jaw do not replace any of the primary teeth. they start erupting from the age of 6 and the process continues till the age of 12 up to 13.
taking good care of these basic set must be a priority. therefore, brush once in the morning and at night to keep those cavities at bay. 