RESUMO
The main purpose of this study is to determine the probability distribution for the permanent teeth. Design: The study analysis based upon common facts in this area. Sample: Patients from Saddam Hospital were chosen for the study purposes. Among [354] patients have been [49%] males and [51%] females. Intervention: The permanent teeth have been divided in terms of anterior as group A, canines and premolars as group B, and molars as group C. Main outcome measures: X2 test was applied to evaluate the goodness of fit in the sample. The study presents a significant correlation in terms of teeth losses and age factors. In terms of groups, we find [for male]: the negative exponential distribution for group A, normal distribution for both groups B and C while the normal distribution for group A and Weible distribution for both groups B and C are the best distributions for fitting