بررسي انطباق زاويه Y- AXIS با كتب مرجع و اندازه بولتون آن در افراد 30-15 سال در سالهاي 78-1374

Cephalometric comparison of craniofacial features of the thalassaemic patients under regular and irregular treatment with normal individuals

Background & Aim: With regards to improvement in medical treatment methods for thalassaemic patients and demands for orthodontic treatment of this group, the present study was undertaken to compare cephalometric parameters of patients under regular treatment with those under irregular treatment and normal individuals with emphasis on Mc Namara method. Methods & Materials: This cross-sectional study was performed on a total of 90 thalassaemic patients under regular treatment, 45 males (mean age: 13.4 yrs.) and 45 females (mean age: 13.7 yrs.) as the study group, 80 thalassaemic patients under irregular treatment composed of, 30 males (mean age:13.2 yrs) and 30 females (mean age: 13.8 yrs) and 90 normal individuals, 45 males (mean age: 13.4) and 45 females (mean age: 13.3 yrs) as the two control groups. Lateral cephalograms were provided for all subjects and cephalometric parameters defining craniofacial morphology, derived mainly from McNamara analysis, evaluating soft tissue, dental, dentoalveolar and skeletal characteristics were assessed. Analysis of variance (ANOVA) for comparing the 3 groups and T-test to identify the existence of any differences between 2 groups were used in this study. Results: All thalassaemic patients in the two groups had a CI II skeletal base relationship especially those under irregular treatment. There was no significant difference between the mean of the most cephalometric parameters in the thalassaemic patients group under regular treatment with normal control group, while the statistical analysis showed significant difference (P<0.05) between most of the parameters in thalassaemic patients in the 2 groups. Vertically, the growth pattern of thalassaemic patients under regular treatment, differing much from those under irregular treatment, showed to be nearly similar as the normal individuals. Conclusion: The role of regular transfusion vs. irregular treatment of the thalassaemic patients is very important not only for longer life time, but it helps to attain normal facial appearance. The facial and skeletal pattern of thalassaemic patients with regular treatment differ much from those with irregular transfusion especially in vertical dimensions and dentoalveolar aspects.