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KJO Korean Journal of Orthodontics

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pISSN 2234-7518
eISSN 2005-372X
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Original Article

Korean J Orthod 2008; 38(1): 52-59

Published online February 28, 2008 https://doi.org/10.4041/kjod.2008.38.1.52

Copyright © The Korean Association of Orthodontists.

Skeletal maturation associated with the fourth cervical vertebra and menarcheal timing

Kyu-hong Lee, DDS, aYong-in Hwang, DDS, aYoon-ji Kim, DDS, aYang-ho Park, DDS, MSD, PhD, bSeung-hak Baek, DDS, MSD, PhD, c and Kyung-suk Cha, DDS, MSD, PhDd

aResident, Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Korea.
bAssociate Professor, Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Korea.
cAssociate Professor, Department of Orthodontics, School of Dentistry, Seoul National University, Korea.
dProfessor, Department of Orthodontics, School of Dentistry, Dankook University, Korea.

Correspondence to: Yang-ho Park. Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, 445 Gil-Dong, Gangdong-Gu, Seoul 134-701, Korea. +82 2 2225 2969; Email: dentpark64@hanmail.net

Received: September 14, 2007; Revised: February 12, 2008; Accepted: February 14, 2008

Abstract

Objective

This study analyzed the morphologic changes of the fourth cervical vertebra body to determine the skeletal age of orthodontic patients during growth.

Methods

Eighty-one female patients aged from 11 to 14 who had cephalograms taken on the same day were examined. The subjects were divided into three groups depending on the depth of the concavity of the lower border of the fourth cervical vertebra (Group A: less than 1.05 mm, Group B: 1.05 - 2.07 mm, Group C: greater than 2.07 mm). Menarcheal timing, SMI stage, length, width and ratio of length and width of the fourth cervical vertebra body were analyzed and the following results were obtained.

Results

The average SMI stage of group A,B and C were 5.67 ± 2.57, 8.73 ± 2.41, and 10.00 ± 1.47, respectively. Length, width, ratio of length and width, and SMI stage were greater in group B than group A and in group C than group B. Mean menarcheal timing was 11.64 ± 0.92 years. Concavity depth, length, width, ratio of length and width showed a significant positive correlation with SMI stage, especially with the concavity depth.

Conclusion

The results of this study propose a simple method for determining the timing of orthopedic treatment by measuring the concavity depth of the fourth cervical vertebra on the cephalogram.

Keywords: Cervical vertebra, Hand-wrist, Menarche, Skeletal maturation

Article

Original Article

Korean J Orthod 2008; 38(1): 52-59

Published online February 28, 2008 https://doi.org/10.4041/kjod.2008.38.1.52

Copyright © The Korean Association of Orthodontists.

Skeletal maturation associated with the fourth cervical vertebra and menarcheal timing

Kyu-hong Lee, DDS, aYong-in Hwang, DDS, aYoon-ji Kim, DDS, aYang-ho Park, DDS, MSD, PhD, bSeung-hak Baek, DDS, MSD, PhD, c and Kyung-suk Cha, DDS, MSD, PhDd

aResident, Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Korea.
bAssociate Professor, Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Korea.
cAssociate Professor, Department of Orthodontics, School of Dentistry, Seoul National University, Korea.
dProfessor, Department of Orthodontics, School of Dentistry, Dankook University, Korea.

Correspondence to: Yang-ho Park. Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, 445 Gil-Dong, Gangdong-Gu, Seoul 134-701, Korea. +82 2 2225 2969; Email: dentpark64@hanmail.net

Received: September 14, 2007; Revised: February 12, 2008; Accepted: February 14, 2008

Abstract

Objective

This study analyzed the morphologic changes of the fourth cervical vertebra body to determine the skeletal age of orthodontic patients during growth.

Methods

Eighty-one female patients aged from 11 to 14 who had cephalograms taken on the same day were examined. The subjects were divided into three groups depending on the depth of the concavity of the lower border of the fourth cervical vertebra (Group A: less than 1.05 mm, Group B: 1.05 - 2.07 mm, Group C: greater than 2.07 mm). Menarcheal timing, SMI stage, length, width and ratio of length and width of the fourth cervical vertebra body were analyzed and the following results were obtained.

Results

The average SMI stage of group A,B and C were 5.67 ± 2.57, 8.73 ± 2.41, and 10.00 ± 1.47, respectively. Length, width, ratio of length and width, and SMI stage were greater in group B than group A and in group C than group B. Mean menarcheal timing was 11.64 ± 0.92 years. Concavity depth, length, width, ratio of length and width showed a significant positive correlation with SMI stage, especially with the concavity depth.

Conclusion

The results of this study propose a simple method for determining the timing of orthopedic treatment by measuring the concavity depth of the fourth cervical vertebra on the cephalogram.

Keywords: Cervical vertebra, Hand-wrist, Menarche, Skeletal maturation