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Korean J Orthod
Copyright © The Korean Association of Orthodontists.
Yifan Li1, Ruomei Li1, Jiajun Shi1, Yuhua Shan1 and Zhenqi Chen1
1 Department of Orthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology.
Correspondence to:Zhenqi Chen
Professor, Department of Orthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011, Shanghai, China.
Telephone: +8618019790571
Fax numbers: +0532-23271699-5206.
Email: orthochen@yeah.net
Objectives: We aimed to evaluate zygomaticotemporal suture (ZTS) maturation, analyze the age distribution patterns of ZTS maturation stages and investigate the relationship between ZTS maturation and cervical vertebral maturation (CVM).
Materials and Methods: A total of 261 cone-beam computed tomography (CBCT) subjects (112 male, mean age, 13.1±3.3 years; 149 female, mean age, 13.7 ± 3.1 years) were examined to evaluate ZTS stages. The ZTS stages were defined based on a modified method from previous studies of zygomaticomaxillary suture. Age and CVM distribution patterns of ZTS maturation stages were described. The differences between groups and correlation between indicators were analyzed using Spearman correlation test, intraclass coefficient of correlation (ICC), one-way ANOVA test and rank sum test. Statistical significance was set at P < 0.05. The diagnostic value of CVM stages in identifying ZTS maturation stages was evaluated by positive likelihood ratios (LRs).
Results: A positive relationship was found between ZTS stages and CVM stages (r = 0.747, ICC = 0.621, P < 0.01), and between ZTS stages and chronological ages (r = 0.727, ICC = 0.330, P < 0.01). Positive LRs greater than 10 were found for several CSs, including CS1 and CS2 for the diagnosis of stage B, CS1 to CS3 for the diagnosis of stage B and C, and CS6 for the diagnosis of stage D and E.
Conclusions: ZTS maturation stages may be more relevant with CVM stages than chronological ages. CVM stages can be good indicators for clinical decision on maxillary protraction except CS4 and CS5.
Keywords: CT, Growth and development, Early treatment, Class III
Korean J Orthod
First Published Date May 16, 2023
Copyright © The Korean Association of Orthodontists.
Yifan Li1, Ruomei Li1, Jiajun Shi1, Yuhua Shan1 and Zhenqi Chen1
1 Department of Orthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Shanghai Research Institute of Stomatology.
Correspondence to:Zhenqi Chen
Professor, Department of Orthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011, Shanghai, China.
Telephone: +8618019790571
Fax numbers: +0532-23271699-5206.
Email: orthochen@yeah.net
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Objectives: We aimed to evaluate zygomaticotemporal suture (ZTS) maturation, analyze the age distribution patterns of ZTS maturation stages and investigate the relationship between ZTS maturation and cervical vertebral maturation (CVM).
Materials and Methods: A total of 261 cone-beam computed tomography (CBCT) subjects (112 male, mean age, 13.1±3.3 years; 149 female, mean age, 13.7 ± 3.1 years) were examined to evaluate ZTS stages. The ZTS stages were defined based on a modified method from previous studies of zygomaticomaxillary suture. Age and CVM distribution patterns of ZTS maturation stages were described. The differences between groups and correlation between indicators were analyzed using Spearman correlation test, intraclass coefficient of correlation (ICC), one-way ANOVA test and rank sum test. Statistical significance was set at P < 0.05. The diagnostic value of CVM stages in identifying ZTS maturation stages was evaluated by positive likelihood ratios (LRs).
Results: A positive relationship was found between ZTS stages and CVM stages (r = 0.747, ICC = 0.621, P < 0.01), and between ZTS stages and chronological ages (r = 0.727, ICC = 0.330, P < 0.01). Positive LRs greater than 10 were found for several CSs, including CS1 and CS2 for the diagnosis of stage B, CS1 to CS3 for the diagnosis of stage B and C, and CS6 for the diagnosis of stage D and E.
Conclusions: ZTS maturation stages may be more relevant with CVM stages than chronological ages. CVM stages can be good indicators for clinical decision on maxillary protraction except CS4 and CS5.
Keywords: CT, Growth and development, Early treatment, Class III
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