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Table 3 Comparison of TPI scores in thalassemic and normal children

From: Prevalence of malocclusion and assessment of treatment needs in β-thalassemia major children

TPI scores Normal occlusion 0 (%) Minor malocclusion 1–3.99 (%) Definite malocclusion 4–6.99 (%) Handicapping malocclusion 7–9.99 (%) Severely handicapping malocclusion >10.0 (%)
Thalassemic children 6 26 36 18 14
Normal children 40 37 10 5 3