Six Day Dental & Orthodontics’ Mighty Molar Man will be at Allen ISD Learn 'N' Playday Preschool to teach kids about dental hygiene 1 to 2:30 p.m. Thursday and Friday. According to its PR representative, about 51 million school hours are lost per year because of dental illness. Mighty Molar Man's visit with Allen's children is an effort to change that statistic.