KMID : 0358920190460020139
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Journal of the Korean Academy of Pedodontics 2019 Volume.46 No. 2 p.139 ~ p.146
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Evaluation of Midpalatal Suture Maturation using Cone-Beam Computed Tomography in Children and Adolescents
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Lee Yeon-Ju
Mah Yon-Joo
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Abstract
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This study aimed to analyze the association of midpalatal suture (MPS) maturation stages with skeletal maturation and age and to obtain references for establishing a treatment plan for rapid maxillary expansion (RME).
Cone-Beam Computed Tomography (CBCT) images from 480 children (240 boys, 240 girls) aged 7 - 15 years were obtained. MPS maturation stages and cervical vertebral maturation indicator (CVMI) were evaluated, and the correlations between MPS maturation stages, CVMI, and age were determined using the Spearman¡¯s correlation test. The positive likelihood ratio (LHR) of CVMI for MPS maturation stages was calculated.
MPS maturation stages and CVMI showed a strong correlation. Especially, CVMI 1 - 3 showed positive LHR greater than 10 for the diagnosis of stages A - C. MPS maturation stages and age were correlated strongly in girls and moderately in boys.
Conventional RME produces the most favorable skeletal effect at CVMI 1 - 3 or those up to 12 years of age and fewer skeletal effects at CVMI 4 or at 13 years of age in girls and 13 - 15 years in boys. It is recommended to evaluate MPS maturation stages using CBCT before RME application at CVMI 5, 6 or at 14, 15 years of age in girls.
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KEYWORD
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Midpalatal suture, Rapid maxillary expansion, Cone-beam computed tomography, Cervical vertebral maturation indicator
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