Özet:

Background: thalassemia is hemolytic disease characterized by deficiency of the alpha formation or beta globin chain synthesis, the aim of the study is to evaluate the relation of B-thalassemia and caries of teeth. Materials and methods: the sample consist of 48 patients were examined, the case group were examined in thalassemia center in Basrah city while controlled group was examined among children attending college of dentistry dental clinic. Decayed, missed and filled teeth indices were used for detection of caries experience in deciduous and permanent teeth according to criteria of WHO (1987). Results: results illustrate the DMFT total mean value of permanent dentitionfor thalassemia patients aged 6-8 years old was (4.33) while for controlled patients( 0.62) with statistically significant difference, at age 9-12 years old the total mean value of DMFT of permanent dentition for thalassemia patients (1.00) while for controlled patients(2.50) with statistically significant difference. The total mean value of dmft of primary dentition for thalassemia patients aged 6-8 years old was (6.77) while for controlled patients(6.23) with no statistically significant difference, regarding the age of 9-12 years old the total mean value of dmft of primary dentition for thalassemia patients (4.80) while for controlled patients(3.33) with no statistically significant difference.

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