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Hwang UJ, Kwon OY, Kim JH, Yang S. Machine learning models for classifying non-specific neck pain using craniocervical posture and movement. Musculoskelet Sci Pract 2024; 71:102945. [PMID: 38527390 DOI: 10.1016/j.msksp.2024.102945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 03/11/2024] [Accepted: 03/17/2024] [Indexed: 03/27/2024]
Abstract
OBJECTIVE Physical therapists and clinicians commonly confirm craniocervical posture (CCP), cervical retraction, and craniocervical flexion as screening tests because they contribute to non-specific neck pain (NSNP). We compared the predictive performance of statistical machine learning (ML) models for classifying individuals with and without NSNP using datasets containing CCP and cervical kinematics during pro- and retraction (CKdPR). DESIGN Exploratory, cross-sectional design. SETTING AND PARTICIPANTS In total, 773 public service office workers (PSOWs) were screened for eligibility (NSNP, 441; without NSNP, 332). METHODS We set up five datasets (CCP, cervical kinematics during the protraction, cervical kinematics during the retraction, CKdPR and combination of the CCP and CKdPR). Four ML algorithms-random forest, logistic regression, Extreme Gradient boosting, and support vector machine-were trained. MAIN OUTCOME MEASURES Model performance were assessed using area under the curve (AUC), accuracy, precision, recall and F1-score. To interpret the predictions, we used Feature permutation importance and SHapley Additive explanation values. RESULTS The random forest model in the CKdPR dataset classified PSOWs with and without NSNP and achieved the best AUC among the five datasets using the test data (AUC, 0.892 [good]; F1, 0.832). The random forest model in the CCP dataset had the worst AUC among the five datasets using the test data [AUC, 0.738 (fair); F1, 0.715]. CONCLUSION ML performance was higher for the CKdPR dataset than for the CCP dataset, suggesting that ML algorithms are more suitable than classical statistical methods for developing robust models for classifying PSOWs with and without NSNP.
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Affiliation(s)
- Ui-Jae Hwang
- Department of Physical Therapy, College of Health Science, Laboratory of KEMA AI Research (KAIR), Yonsei University, Wonju, 26426, Republic of Korea.
| | - Oh-Yun Kwon
- Department of Physical Therapy, College of Health Science, Laboratory of Kinetic Ergocise Based on Movement Analysis, Yonsei University, Wonju, 26426, Republic of Korea.
| | - Jun-Hee Kim
- Department of Physical Therapy, College of Health Science, Laboratory of KEMA AI Research (KAIR), Yonsei University, Wonju, 26426, Republic of Korea.
| | - Sejung Yang
- Department of Precision Medicine, Yonsei University Wonju College of Medicine, Wonju, 26426, Republic of Korea; Department of Medical Informatics and Biostatistics, Graduate School, Yonsei University, Republic of Korea.
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Xiang W, Wang M, Cai M, Li Z, Hou B, Pan X. Correlation between craniocervical posture and upper airway dimension in patients with bilateral anterior disc displacement. J Stomatol Oral Maxillofac Surg 2024; 125:101785. [PMID: 38316212 DOI: 10.1016/j.jormas.2024.101785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 01/24/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVE To investigate the relationship between upper airway dimension and craniocervical posture in adult patients with bilateral anterior disc displacement and to provide some references for clinical diagnosis and plan formulation in orthodontics. METHODS Based on RDC/TMD (Research Diagnostic Criteria for Temporomandibular Disorder), 98 Patients were divided into three groups by two experienced TMJ (Temporomandibular Joint) specialists: bilateral disc normal position group (BN), bilateral anterior disc displacement with reduction group (ADDWR) and bilateral anterior disc displacement without reduction group (ADDWoR). Inter-group comparison and correlation analysis were performed after 11 craniocervical posture and 15 upper airway dimension measurements finished with Dolphin and Uceph software in Two or Three-dimensional. RESULTS Anterior disc displacement often accompanied with extension of craniocervical posture, as ADDWR and ADDWoR groups have significantly higher cervical curvature and inclination than BN group (P < 0.05). Simultaneously anterior disc displacement often associated with constrained upper airway dimension for the total and each segment upper airway volume were significantly smaller in ADDWR and ADDWoR than BN group (P < 0.05). Correlation analysis revealed that C0-C1 (the distance from the base of the occipital bone (C0) to the posterior arch of the atlas (C1)) is significantly related to the total and each segment upper airway volume reduction (P < 0.05). CONCLUSION There exists markedly close correlation between anterior disc displacement and craniocervical posture forward extension, which may be physiologically adaptive cervical extension to keep oropharyngeal airway unobstructed as upper airway dimension constrained by anterior disc displacement. CLINICAL RELEVANCE These findings allow us to infer the potential consequences if the treatment of anterior disc displacement would result in an improvement of intervertebral relationships and upper airway constraint.
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Affiliation(s)
- Wanfang Xiang
- School of Stomatology, Lanzhou University, Lanzhou 730000, PR China
| | - Min Wang
- School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Mingqin Cai
- School of Stomatology, Lanzhou University, Lanzhou 730000, PR China
| | - Zhihui Li
- School of Stomatology, Lanzhou University, Lanzhou 730000, PR China
| | - Binjie Hou
- School of Stomatology, Lanzhou University, Lanzhou 730000, PR China
| | - Xiaojing Pan
- School of Stomatology, Lanzhou University, Lanzhou 730000, PR China.
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Xiang W, Wang M, Li Z, Cai M, Pan X. Correlation between temporomandibular joints and craniocervical posture in patients with bilateral anterial disc displacement. BMC Oral Health 2024; 24:159. [PMID: 38297238 PMCID: PMC10832266 DOI: 10.1186/s12903-024-03892-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 01/12/2024] [Indexed: 02/02/2024] Open
Abstract
OBJECTIVE To study the changes of temporomandibular joints and craniocervical posture in adult patients with bilateral anterior disc displacement, and to explore their correlation, which may provide some clinical value for clinical diagnosis and treatment planning. METHODS Ninety-eight adult patients were divided into 3 groups: 29 patients in bilateral disc normal position group (BN), 33 patients in bilateral Anterior Disc Displacement With Reduction group (ADDWR) and 36 patients in bilateral Anterior Disc Displacement Without Reduction group (ADDWoR). Dolphin and Uceph software were used to measure 14 items of temporomandibular joint and 11 items of craniocervical posture for comparison and correlation analysis between groups. RESULTS There were significant differences in bilateral joint space between three groups. Compared with the BN, the anteroposterior diameter of the condyle was significantly reduced, the condyle was significantly displaced posteriorly and superiorly in the ADDWR and ADDWoR, but the joint fossa width and joint fossa depth did not change significantly. Cervical curvature and inclination were greater in patients with anterior disc displacement than BN, indicating that the craniocervical posture of adult patients with anterior disc displacement was extended and protrusive. CONCLUSION Anterior disc displacement of the temporomandibular joint can displace the condyle upwards and posteriorly and reduce the anteroposterior diameter of condyle, and then make the condyle closer to the wall of articular fossa to induce joint symptoms. Additionally, craniocervical postural position is significantly affected, which may be related to compensate for the effects of airway space.
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Affiliation(s)
- Wanfang Xiang
- School/Hospital of Stomatology, Lanzhou University, Tianshui South Road, Chengguan District, Lanzhou, Gansu Province, 730000, People's Republic of China
| | - Min Wang
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Zhihui Li
- School/Hospital of Stomatology, Lanzhou University, Tianshui South Road, Chengguan District, Lanzhou, Gansu Province, 730000, People's Republic of China
| | - Mingqin Cai
- School/Hospital of Stomatology, Lanzhou University, Tianshui South Road, Chengguan District, Lanzhou, Gansu Province, 730000, People's Republic of China
| | - Xiaojing Pan
- School/Hospital of Stomatology, Lanzhou University, Tianshui South Road, Chengguan District, Lanzhou, Gansu Province, 730000, People's Republic of China.
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Shen Y, Li X, Feng X, Yu L, Weng L, Zhang C, Shang Y, Lin J. Differences in the effects of orthodontic treatment on airway-craniocervical functional environment in adult and adolescent patients with skeletal class II high-angle: a retrospective pilot study. BMC Oral Health 2023; 23:605. [PMID: 37644470 PMCID: PMC10464110 DOI: 10.1186/s12903-023-03328-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023] Open
Abstract
INTRODUCTION This retrospective cohort study aimed to compare the change in upper airway and craniocervical posture after orthodontic treatment between adolescent and adult patients with Class II high-angle malocclusion. METHODS A total of 12 adolescent (mean ± standard deviation age = 13.0 ± 2.0 years) and 12 adult patients with Class II high-angle malocclusion (mean ± standard deviation age = 23.7 ± 6.4 years) were selected in this study. The lateral cephalograms and cone beam computed tomography images of adolescent and adult patients were taken before and after treatment, which can be employed to evaluate the variables of craniofacial morphology, upper airway, and craniocervical posture through paired t tests, respectively. An independent sample t test was performed to observe the differences between two groups after orthodontic intervention. For adults and adolescents, the correlation between craniofacial morphology, upper airway, and craniocervical posture was determined through Pearson correlation analysis. RESULTS In all subjects, the improvements in vertical and sagittal facial morphology after treatment were observed. Anterior and inferior movements of the hyoid bone, an increase of upper airway dimension, posterior tipping of the head and a reduction of cervical inclination in the lower and middle segments post-treatment were identified in adolescence (P < 0.05). Adults displayed anterior movements of the hyoid bone, whereas no significant difference was observed in upper airway dimension and craniocervical posture (P < 0.05). Notable differences were identified in the change of hyoid position and airway volume between two groups (P > 0.05). Mandibular plane inclination, growth pattern, occlusal plane inclination, and chin position were all significantly correlated with craniocervical posture in adolescent patients. Besides, the mandibular growth pattern and chin position in adult patients were significantly correlated with craniocervical posture (P < 0.05). CONCLUSIONS Orthodontic treatment is capable of enhancing the facial profile of patients with skeletal class II high-angle while improving their upper airway morphology and craniocervical posture, where adolescents and adults differ substantially in that the former exhibit a more favorable alteration in the airway-craniocervical functional environment.
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Affiliation(s)
- Yiyang Shen
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, Zhejiang, China
| | - Xin Li
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, Zhejiang, China
| | - Xiaoyan Feng
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, Zhejiang, China
| | - Lan Yu
- The Affiliated Lihuili Hospital, Ningbo University, Ningbo, Zhejiang, China
| | - Luxi Weng
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, Zhejiang, China
| | - Chenxing Zhang
- Department of Stomatology, Hangzhou Geriatric Hospital, Hangzhou, Zhejiang, China
| | - Yufeng Shang
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, Zhejiang, China
| | - Jun Lin
- Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, Zhejiang, China.
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Rani B, Paul A, Chauhan A, Pradhan P, Dhillon MS. Is Neck Pain Related to Sagittal Head and Neck Posture?: A Systematic Review and Meta-analysis. Indian J Orthop 2023; 57:371-403. [PMID: 36825268 DOI: 10.1007/s43465-023-00820-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/06/2023] [Indexed: 01/20/2023]
Abstract
Background Neck pain (NP) is common in all age groups and adversely affects the patients' entire lifestyle. There exists inconclusive evidence relating faulty craniocervical posture with pain-related disability. This review aims to determine whether sagittal head and neck posture differs in NP and pain-free subjects, to critically appraise the correlation of posture with NP. Methods Of 3796 articles identified at primary search from CINAHL, PubMed, Google Scholar, EMBASE, 26 were included based on eligibility criteria. Mean pooled difference (MPD) and effect size (ES) were calculated to establish relationship among studies, to assess postural correlation with NP measures [Visual Analogue Scale (VAS), Numeric Pain Rating Scale (NPRS), neck disability index (NDI), Northwick Park NP Questionnaire (NPQ)] and for age- and gender-wise variation. Risk of bias was assessed using Newcastle-Ottawa Quality Assessment Scale. Results Craniovertebral angle (CVA) had a significant MPD of - 2.93(95% CI - 4.95 to - 0.91). Sagittal head angle (SHA) and forward head posture (FHP) had an insignificant MPD of 1.15 (95% CI - 1.16 to 3.46) and - 0.26 (95% CI - 1.89 to 1.36), respectively. Age- and gender-wise CVA difference was found to be 2.36° and 2.57°, respectively. ES was significant for correlation between CVA and pain intensity [NPRS: - 0.44 (95% CI - 0.61 to - 0.26); VAS: - 0.31 (95% CI - 0.46 to - 0.16)], and between CVA and disability [NDI: - 0.18 (95% CI - 0.31 to - 0.05); NPQ: - 0.47 (95% CI - 0.61 to - 0.320)]. Conclusion CVA differs for age, gender, and pain vs pain-free subjects, and correlates negatively with NP measures. Other surrogate measures (SHA, cranial and cervical angles, FHP) warrant further research. PROSPERO Registration PROSPERO 2021 CRD42021275485.
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Bilgin E, Bilgin E, Özdemir O, Kalyoncu U. Temporomandibular disorders in ankylosing spondylitis: a cross-sectional, monocentric study. Rheumatol Int 2020; 40:933-940. [PMID: 32239320 DOI: 10.1007/s00296-020-04563-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 03/21/2020] [Indexed: 12/30/2022]
Abstract
There are contradictory results in the relevant literature about the relationship between objective determinants of craniocervical posture and temporomandibular disorder (TMD), whereas no study has worked on ankylosing spondylitis (AS) and TMD relationship. We conducted this study to test the predictors of TMD in AS patients and its relationship with craniocervical posture. AS patients aged between 18 and 50 years consecutively admitted to our outpatient clinics were recruited. TMD was diagnosed by 'Diagnostic Criteria for Temporomandibular Disorders (DC/TMD)'. Spinal mobility was assessed by BASMI; disease activity by ASDAS-CRP and neck disability by Neck Disability Index. Craniocervical posture was assessed on lateral cervical X-ray by measuring the craniocervical angle, cervical curvature angle, suboccipital distance, atlas-axis distance, and anterior translation distance. A total of 98 (58.2% female) patients with a mean age of 37.4 ± 8.2 years were enrolled in this study. TMD was diagnosed in 58 (59.2%) patients. Spinal mobility and craniocervical posture measurements were similar among the two groups. Smoking, bruxism (in females), neck disability and AS disease activity (in males) were higher in TMD patients. Multivariate analysis revealed active smoking (aOR 6.9; 95% CI 1.8-25.6; p = 0.004), bruxism in females (aOR 17.9; 95% CI 2.0-159.2; p = 0.01), high ASDAS in males (aOR 11.8; 95% CI 1.2-122.5; p = 0.038) and neck disability (aOR 12.7; 95% CI 3.8-42.9; p < 0.001) as independent risk factors for TMD in AS patients. No relationship between the craniocervical posture measurements and TMD was found in AS patients. Active smoking, high disease activity in males, bruxism in females and neck disability were found as predictors of TMD in AS patients.
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Affiliation(s)
- Esra Bilgin
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Emre Bilgin
- Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, Hacettepe University, Ankara, Turkey.
| | - Oya Özdemir
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Umut Kalyoncu
- Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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Sandoval C, Díaz A, Manríquez G. Relationship between craniocervical posture and skeletal class: A statistical multivariate approach for studying Class II and Class III malocclusions. Cranio 2019; 39:133-140. [PMID: 31035911 DOI: 10.1080/08869634.2019.1603795] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objective: To investigate the relationships between craniocervical posture and skeletal Class in cephalometric radiographs of adult subjects.Methods: Sixty-five cephalometric radiographs were classified after Delaire, as skeletal Class II and III. The craniocervical posture was evaluated using the variables proposed by Solow (1976) and Rocabado (1983). In order to test the null hypothesis (absence of an association between craniocervical posture and skeletal Class), uni- and multivariate statistical protocols were carried out.Results: Skeletal Class II presented a more posterior rotation of the ramus in relation to the cranium and a more extended head than skeletal Class III. Additionally, significant correlations were observed in Class II individuals between the rotation of mandibular ramus and cervical lordosis, as well as between rotation of mandibular ramus and craniocervical posture.Discussion: The findings of this research may help to understand the contradictory results described in clinical literature about the effect of skeletal class on craniocervical posture.
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Affiliation(s)
- Camilo Sandoval
- Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Alejandro Díaz
- Centre for Quantitative Analysis in Dental Anthropology (CA2), Faculty of Dentistry, University of Chile, Santiago, Chile
| | - Germán Manríquez
- Centre for Quantitative Analysis in Dental Anthropology (CA2), Faculty of Dentistry, University of Chile, Santiago, Chile.,Institute of Dental Research, Physics Group, Faculty of Dentistry, University of Chile, Santiago, Chile.,Physical Anthropology Group, Faculty of Social Sciences, University of Chile, Santiago, Chile
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Liu Y, Wang S, Wang C, Liu C. Relationships of vertical facial pattern, natural head position and craniocervical posture in young Chinese children. Cranio 2017; 36:311-317. [PMID: 28669326 DOI: 10.1080/08869634.2017.1345461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To investigate relationships of vertical facial patterns, natural head position (NHP), and craniocervical posture in young Chinese children with skeletal Class I relationship. METHODS Ninety-four patients with skeletal Class I relationship were classified into low, average, and high angle groups according to their mandibular plane angle (NSL/ML). Cephalometric radiographs in NHP were taken. Variables representing vertical and sagittal craniofacial morphology, head posture, and craniocervical posture were measured and compared. RESULTS Inclinations of the mandible to the true vertical and cervical column were smallest in the high angle group and largest in the low angle group. Other variables representing head posture and craniocervical posture were largest in the high angle group, smallest in the low angle group. Inclinations of ramus to cervical column were largest in the high angle group and smallest in the low angle group. DISCUSSION Subjects with large NSL/ML angles showed extended head and craniocervical posture, while subjects with small NSL/ML angles exhibited flexed head and craniocervical posture.
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Affiliation(s)
- Ying Liu
- a Department of Orthodontics , School of Stomatology, JiLin University , Changchun , China
| | - Shuo Wang
- b Key Laboratory of Oral Medicine , Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University , Guangzhou , China
| | - Chunhui Wang
- b Key Laboratory of Oral Medicine , Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University , Guangzhou , China
| | - Chang Liu
- b Key Laboratory of Oral Medicine , Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University , Guangzhou , China
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Kee IK, Byun JS, Jung JK, Choi JK. The presence of altered craniocervical posture and mobility in smartphone-addicted teenagers with temporomandibular disorders. J Phys Ther Sci 2016; 28:339-46. [PMID: 27065516 PMCID: PMC4792970 DOI: 10.1589/jpts.28.339] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 10/30/2015] [Indexed: 11/24/2022] Open
Abstract
[Purpose] Smartphones are widely used by teenagers and adults for various purposes. As
teenagers use smartphones more actively than adults, they are more prone to be addicted to
smartphones. Furthermore, excessive usage of smartphones can lead to various psychosocial
and physical symptoms. [Subjects and Methods] One hundred teenage subjects were recruited
and divided into normal and addiction groups, based on the criteria of the smartphone
addiction scale-short version questionnaire. Craniocervical posture and mobility were
examined by lateral cephalometric analysis and a cervical range of motion instrument.
[Results] Cephalometric analysis showed no significant difference in the craniocervical
angles of the resting positions of the two groups. However, measurement using an
inclinometer revealed a significantly flexed cervical posture while using smartphones and
decreased cervical range of motion in the smartphone-addicted teenagers. The clinical
profile of temporomandibular disorders revealed that muscular problems were more
frequently presented in the smartphone-addicted teenagers. [Conclusion] These findings
suggest that smartphone addiction has a negative influence on craniocervical posture and
mobility. Further, it can be postulated that smartphone addiction among teenagers may have
contributed to the occurrence of myogenous temporomandibular disorders. In conclusion,
smartphone-addicted teenagers may be more frequently subjected to muscular disturbance in
the craniocervical area, which probably affects the pathologic process of
temporomandibular disorders in teenagers.
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Affiliation(s)
- In-Kyung Kee
- Department of Oral Medicine, School of Dentistry, Kyungpook National University, Republic of Korea
| | - Jin-Seok Byun
- Department of Oral Medicine, School of Dentistry, Kyungpook National University, Republic of Korea
| | - Jae-Kwang Jung
- Department of Oral Medicine, School of Dentistry, Kyungpook National University, Republic of Korea
| | - Jae-Kap Choi
- Department of Oral Medicine, School of Dentistry, Kyungpook National University, Republic of Korea
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Ansar J, Maheshwari S, Verma SK, Singh RK, Agarwal DK, Bhattacharya P. Soft tissue airway dimensions and craniocervical posture in subjects with different growth patterns. Angle Orthod 2015; 85:604-10. [PMID: 25245417 PMCID: PMC8611761 DOI: 10.2319/042314-299.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 08/01/2014] [Indexed: 08/31/2023] Open
Abstract
OBJECTIVE To compare the dimensions of the nasopharynx and oropharynx of subjects with different growth patterns and to determine whether any correlation exists with their craniocervical posture. MATERIALS AND METHODS Cephalometric radiograph of 60 subjects (16-25 years old), taken in natural head position, were divided into three groups according to the mandibular plane angle: hypodivergent (SN/MP <26°), normodivergent (SN/MP 26°-38°), and hyperdivergent (SN/MP <38°). Correlations were calculated between nasopharyngeal area, oropharyngeal area, and craniocervical posture. Continuous variables were compared by one-way analysis of variance, and the significance of mean difference between the groups was done by the Tukey post hoc test. A value of P < .05 was considered statistically significant. RESULTS Patients in the hyperdivergent group were found to have significantly smaller nasopharyngeal and oropharyngeal areas than the other groups (P < .001 and P < .05, respectively). Similarly, the oropharyngeal area in the normodivergent group was significantly smaller than that in the hypodivergent group (P < .05). However, no significant differences were found in the nasopharyngeal area between the hypodivergent and normodivergent groups and between the hyperdivergent and normodivergent groups (P > .05). Reduced pharyngeal airways were typically seen in patients with a large craniocervical angle and a large mandibular inclination. CONCLUSIONS Smaller nasopharyngeal and oropharyngeal airways were seen in connection with a large craniocervical and a large mandibular inclination. We therefore suggest that the vertical skeletal pattern may be one of the factors that contribute to nasopharyngeal and oropharyngeal obstruction.
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Affiliation(s)
- Juhi Ansar
- a Senior lecturer, Department of Orthodontics, Institute of Dental sciences, Bareilly, India
| | - Sandhya Maheshwari
- b Professor and Chairman, Department of Orthodontics and Dental Anatomy, Aligarh Muslim University, Aligarh, India
| | - Sanjeev K Verma
- c Professor, Department of Orthodontics and Dental Anatomy, Aligarh Muslim University, Aligarh, India
| | - Raj Kumar Singh
- d Senior Lecturer, Department of Orthodontics, Sudha Rastogi Dental College, Faridabad, India
| | - Deepak K Agarwal
- e Professor and Chairman, Department of Orthodontics, Institute of Dental Sciences, Bareilly, India
| | - Preeti Bhattacharya
- f Professor, Department of Orthodontics, Institute of Dental Sciences, Bareilly, India
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Liu Y, Sun X, Chen Y, Hu M, Hou X, Liu C. Relationships of sagittal skeletal discrepancy, natural head position, and craniocervical posture in young Chinese children. Cranio 2015; 34:155-62. [PMID: 26039882 DOI: 10.1179/2151090315y.0000000015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the relationships of sagittal skeletal discrepancy, natural head position (NHP), and craniocervical posture in young Chinese children with average vertical facial pattern. METHODS Ninety patients with average Frankfort mandibular plane angle (FH/ML) were classified into skeletal class I, II, and III relationships according to their ANB angle. Cephalometric radiographs in NHP were taken. Variables representing sagittal and vertical craniofacial morphology, head posture, and craniocervical posture were measured and compared. RESULTS Subjects in the skeletal class II group showed the largest craniovertical angles and craniocervical angles, while subjects in the skeletal class III group exhibited the smallest craniovertical angles and craniocervical angles, though not all the measurements showed significant differences. The angle formed by the nasion-sella line and the tangent to the posterior border of the mandibular ramus (NSL/RL) was largest in the skeletal class II group and smallest in the skeletal class III group (p = 0.05). DISCUSSION Significant differences exist in NHP and craniocervical posture among skeletal class I, II, and III relationships in young Chinese children. Subjects with skeletal class II relationship tended to exhibit more extended head, and children with skeletal class III relationship often exhibited flexed head.
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Affiliation(s)
- Ying Liu
- a Department of Orthodontics, Hospital of Stomatology , JiLin University , Changchun , China
| | - Xinhua Sun
- a Department of Orthodontics, Hospital of Stomatology , JiLin University , Changchun , China
| | - Yuanping Chen
- a Department of Orthodontics, Hospital of Stomatology , JiLin University , Changchun , China
| | - Min Hu
- a Department of Orthodontics, Hospital of Stomatology , JiLin University , Changchun , China
| | - Xu Hou
- a Department of Orthodontics, Hospital of Stomatology , JiLin University , Changchun , China
| | - Chang Liu
- a Department of Orthodontics, Hospital of Stomatology , JiLin University , Changchun , China.,b State Key Laboratory of Oral Diseases, West China College of Stomatology, West China Hospital of Stomatology , SiChuan University , Chengdu , China
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Khan MT, Verma SK, Maheshwari S, Zahid SN, Chaudhary PK. Neuromuscular dentistry: Occlusal diseases and posture. J Oral Biol Craniofac Res 2013; 3:146-50. [PMID: 25737904 DOI: 10.1016/j.jobcr.2013.03.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Accepted: 03/28/2013] [Indexed: 12/17/2022] Open
Abstract
Neuromuscular dentistry has been a controversial topic in the field of dentistry and still remains debatable. The issue of good occlusion and sound health has been repeatedly discussed. Sometimes we get complains of sensitive teeth and sometimes of tired facial muscles on getting up in the morning. Owing to the intimate relation of masticatory apparatus with the cranium and cervico-scapular muscular system, the disorders in any system, draw attention from concerned clinicians involved in management, to develop an integrated treatment protocol for the suffering patients. There may be patients reporting to the dental clinics after an occlusal restoration or extraction, having pain in or around the temporomandibular joint, headache or neck pain. Although their esthetic demands must not be undermined during the course of treatment plan, whenever dental treatment of any sort is planned, occlusion/bite should be given prime importance. Very few dentist are able to diagnose the occlusal disease and of those who diagnose many people resort to aggressive treatment modalities. This paper aims to report the signs of occlusal disease, and discuss their association with TMDs and posture.
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Affiliation(s)
- Mohd Toseef Khan
- Assistant Professor, Department of Orthodontics, Dr. ZADCH, AMU, Aligarh, Uttar Pradesh, India
| | - Sanjeev Kumar Verma
- Associate Professor, Department of Orthodontics, Dr. ZADCH, AMU, Aligarh, Uttar Pradesh, India
| | - Sandhya Maheshwari
- Professor and Head, Department of Orthodontics, Dr. ZADCH, AMU, Aligarh, Uttar Pradesh, India
| | - Syed Naved Zahid
- Assistant Professor, Department of Orthodontics, Dr. ZADCH, AMU, Aligarh, Uttar Pradesh, India
| | - Prabhat K Chaudhary
- Assistant Professor, Department of Orthodontics, Dr. ZADCH, AMU, Aligarh, Uttar Pradesh, India
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