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KJO Korean Journal of Orthodontics

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pISSN 2234-7518
eISSN 2005-372X
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Korean J Orthod

Published online January 6, 2022

Copyright © The Korean Association of Orthodontists.

Occlusal deviations in adolescents with idiopathic and congenital scoliosis

Hao Zhang1⊙, Jingbo Ma2⊙, Zhicheng Zhang3⊙, Yafei Feng4, Chuan Cai5, Chao Wang6*

1. State Key Laboratory of Military Stomatology National Clinical Research Center for Oral Diseases,Shaanxi Key Laboratory of Stomatology, Department of orthodontics, School of Stomatology, the Fourth Military Medical University, Shaanxi Province, Xi’an 710032, China;
2. Department of Thoracic Surgery, the Seventh Medical Center of PLA General Hospital, Beijing, 100700,China;
3. Department of Orthopedics, the Seventh Medical Center of PLA General Hospital, Beijing, 100700,China;
4. Department of Orthopedics, Xijing Hospital, the Fourth Military Medical University, Xi’an, 710032, China;
5. Department of Stomatology, the First Medical Center of PLA General Hospital, Beijing, 100853,China;
6. Department of Stomatology, the Seventh Medical Center of PLA General Hospital, Beijing, 100700,China;

Correspondence to:⊙These authors contributed equally to this work.
*Chao Wang, Email:wangchao51115111@126.com, Tel: 0086-010-66721597

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.

Abstract

Objective The objective of this cross-section study was to investigate by clinical examinations the characteristics of malocclusions in scoliotic patients.
Methods Fifty-eight patients with idiopathic scoliosis (IS) and 48 patients with congenital scoliosis (CS) participated in the study. A random group of 152 orthopedically healthy children served as the control group. Standardized orthodontic and orthopedic examination protocols were used to record the occlusal patterns and type of scoliosis. Assessments were made by three experienced orthodontists and a spinal surgery team. Statistical differences in the occlusal patterns frequency of distribution was evaluated by the chi-squared test.
Results CS patients had a higher incidence of Cobb angle ≥ 45° (P = 0.020) and included a higher proportion of surgical treatments (P < 0.001) compared with IS patients. Distribution of the Angle Class Ⅱ subgroup was significantly higher in IS (P < 0.001) and CS (P = 0.031) groups compared to the control group. Compared to healthy controls, there were significantly higher (P < 0.05) frequencies of asymmetric molar and asymmetric canine relationships, upper and lower middle line deviations, anterior deep overbite, unilateral posterior crossbite and canted occlusal plane, especially in CS patients but also to a lesser extent in IS patients.
Conclusions Scoliotic patients had high frequencies of malocclusions, which were most obvious in patients with CS. Key words: facial asymmetry

Keywords: facial asymmetry, dentofacial anomalies, scoliosis, malocclusion

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Korean J Orthod

Published online January 6, 2022

Copyright © The Korean Association of Orthodontists.

Occlusal deviations in adolescents with idiopathic and congenital scoliosis

Hao Zhang1⊙, Jingbo Ma2⊙, Zhicheng Zhang3⊙, Yafei Feng4, Chuan Cai5, Chao Wang6*

1. State Key Laboratory of Military Stomatology National Clinical Research Center for Oral Diseases,Shaanxi Key Laboratory of Stomatology, Department of orthodontics, School of Stomatology, the Fourth Military Medical University, Shaanxi Province, Xi’an 710032, China;
2. Department of Thoracic Surgery, the Seventh Medical Center of PLA General Hospital, Beijing, 100700,China;
3. Department of Orthopedics, the Seventh Medical Center of PLA General Hospital, Beijing, 100700,China;
4. Department of Orthopedics, Xijing Hospital, the Fourth Military Medical University, Xi’an, 710032, China;
5. Department of Stomatology, the First Medical Center of PLA General Hospital, Beijing, 100853,China;
6. Department of Stomatology, the Seventh Medical Center of PLA General Hospital, Beijing, 100700,China;

Correspondence to:⊙These authors contributed equally to this work.
*Chao Wang, Email:wangchao51115111@126.com, Tel: 0086-010-66721597

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.

Abstract

Objective The objective of this cross-section study was to investigate by clinical examinations the characteristics of malocclusions in scoliotic patients.
Methods Fifty-eight patients with idiopathic scoliosis (IS) and 48 patients with congenital scoliosis (CS) participated in the study. A random group of 152 orthopedically healthy children served as the control group. Standardized orthodontic and orthopedic examination protocols were used to record the occlusal patterns and type of scoliosis. Assessments were made by three experienced orthodontists and a spinal surgery team. Statistical differences in the occlusal patterns frequency of distribution was evaluated by the chi-squared test.
Results CS patients had a higher incidence of Cobb angle ≥ 45° (P = 0.020) and included a higher proportion of surgical treatments (P < 0.001) compared with IS patients. Distribution of the Angle Class Ⅱ subgroup was significantly higher in IS (P < 0.001) and CS (P = 0.031) groups compared to the control group. Compared to healthy controls, there were significantly higher (P < 0.05) frequencies of asymmetric molar and asymmetric canine relationships, upper and lower middle line deviations, anterior deep overbite, unilateral posterior crossbite and canted occlusal plane, especially in CS patients but also to a lesser extent in IS patients.
Conclusions Scoliotic patients had high frequencies of malocclusions, which were most obvious in patients with CS. Key words: facial asymmetry

Keywords: facial asymmetry, dentofacial anomalies, scoliosis, malocclusion