Abstract: To investigate the reason for tooth extraction and their correlation with age, gender and to determine the pattern of the teeth loss among pts undergo this study.
Materials and method: The study populations considered of 1610 permanent teeth were extracted in 779 males and 831 females. For each patient the age, the number of the tooth loss anatomically in the oral cavity, the cause, and gender, was recorded in his file. The files of patients in AL Mamoon dental center were recorded from the beginning of 2019 to the end of the year, and retrospectively were analyzed. The p-value less than 0.05 was considered significant and p= 0.000 considered highly significant.
Results: The major group of patients age was the group between 30-39 Ye of age N= 360 which comprises 22%. Caries related extraction N= 1141 which comprise 71.31. %, which includ the failure root canal treatment, retained root, and badly carious teeth. So it is the most common cause of tooth loss followed by periodontal diseases in 188,11. 75.% of all cases and impacted tooth in N=, 153,9.56 %., the rest include the fractures of teeth due to accident, badly positioned teeth which make 2.7%.
The upper 3rd molar in the upper and lower jaws were the most teeth extracted (N=391,24%) the second tooth is the first molar,(N=324,20%).The least tooth extracted is the canine (N=70,4%), followed by the central incisor (N=104,6%).
Conclusion: The most common causes for permanent tooth loss is still dental caries and periodontal disease in this part of population.


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