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- W2359418789 abstract "Objective:To study the applicability of Demirjian's method for age estimation in children of Nanjing.Methods:644 panoramic radiographs( 378 boys and 266 girls) which were collected from Affiliated Hospital of Stomatology of Nanjing Medical University were involved in this study with chronological age from 3 to 16 years.Paired t-test was performed between the chronological age and the age determined by Demirjian's method.Single-factor model was used to explore the relationships of the two kinds of age.Results:For the marked difference between the chronological age and determined age( P 0.01) ,Demirjian's method was not suitable to the children in Nanjing.We set up the mathematical model between tooth maturity and natural age of children in Nanjing,then got the curve-fitting equation.For boys:Y = 43.37Sin ( 0.02579X 1.138) + 30.6SIN ( 0.04275X + 0.9984 ) + 3.019SIN ( 0.08706X + 1.649) ,and for girls:Y = 55.93SIN( 0.04001X 1.642) + 90.97SIN( 0.05389X + 0.7095) + 44.25SIN( 0.06254X + 3.384) .The Results of paired t-test between chronological age and predicted age from quadratic equation showed that there was no significant difference in boys and girls( P 0.05) .Conclusions:Through the establishment of mathematical model between tooth maturity and natural age in this study,we can determine the natural age from 3 to 16 in Nanjing children more accurately by utilizing tooth maturity." @default.
- W2359418789 created "2016-06-24" @default.
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- W2359418789 date "2013-01-01" @default.
- W2359418789 modified "2023-09-25" @default.
- W2359418789 title "Application of Demirjian method in the inference of children's natural age in Nanjing area" @default.
- W2359418789 hasPublicationYear "2013" @default.
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