Epidemiological Study of Features of Primary Dentition Occlusion in Iraqi Preschool Kids sample

Occlusion characteristics of the deciduous dentition plays an important responsibility in the subsequent final occlusion of the permanent teeth. Consequently, good understanding of occlusion in preschoolers is important for pediatric dentist. A total of 630 children of 3-5 years age group with complete primary dentition were examined for occlusal and canine relationship, primate spaces, physiological spacing and overbite. There is alteration in primary molar relation as age increases ,there was a significant rise in mesial step molar relation within five years age group compared to three years age group. The class I canine relation was the most predominant canine relationship, but canine relation alterations with age was not statistically significant. Larger number of the assessed children had spaced primary dentition and flush terminal plane that precede to occurrence of typical occlusion of permanent teeth.