My 3 yr old daughter dose not have back molars. should i be considered?

Unusual: But not unusual enough for alarm. Your daughter should have been under a dentist's care by age 1, preferably a qualified pediatric dentist, a specialist in growth and development of children's teeth an jaws. Please take her for an evaluation, check=up, cleaning, sealants, hygiene instruction, Fluoride recommendations, etc, as well as to find out when her 3 year molars will erupt.