It refers to that department of dentistry is on oral hygiene of children. It includes teeth cleaning, fillings on deciduous teeth (milk teeth) and permanent teeth, extractions of deciduous teeth, preventive sealants as well as the procedure of fluoridation (in terms of reinforcement of the teeth). It is a very special department of dentistry meaning that the dentist should be very caring in order not to frighten children, especially the younger ones. As a result children will consider the whole procedure as a game. Plus when it comes to children we must pay attention on their oral hygiene as well as prevention by teaching them the proper way of brushing their teeth along with frequent teeth check - up.