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Murali S, Kannan A, Kailasam V. Cervical spine changes with functional appliance treatment: A systematic review and meta-analysis. J Oral Biol Craniofac Res 2024; 14:446-454. [PMID: 38855038 PMCID: PMC11157267 DOI: 10.1016/j.jobcr.2024.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/24/2024] [Accepted: 05/18/2024] [Indexed: 06/11/2024] Open
Abstract
Objective Cervical spine posture is related to craniofacial morphology, airway, gait and body posture. This posture may be influenced by the changes in the mandibular position brought about by functional appliance therapy. Therefore, this systematic review aimed to assess the changes in the cervical spine posture with functional appliance treatment in Skeletal Class II subjects. Methods A search of studies in six electronic databases - Medline (via Pubmed), the Cochrane Library, OVID, LILACS, Scopus and Web of Science were performed until January 18, 2024 without any restriction in date or language of publication. Eligibility screening, study selection, and data extraction were performed by two reviewers independently. The risk of bias assessment of the included studies was performed with the Newcastle Ottawa scale and Cochrane RoB 2.0. Meta-analysis was performed using random effects model for assessment of changes in the cervical spine with removable and fixed functional appliances. Results Twelve articles that satisfied the eligibility criteria were included for systematic review and nine articles for meta-analysis. Five studies showed a low risk of bias, one as moderate and six as high risk of bias. GRADE assessment revealed a low quality evidence. Meta-analysis revealed a decrease of the upper cervical inclination by 1.16° (95 % CI of -2.68 to 0.35, I2 = 6 %), an increase of the middle cervical inclination by 2.20° (95 % CI of 0.46-3.94, I2 = 49 %), an increase in cervical curvature angle by 1.60° (95 % CI of 0.12-3.09, I2 = 89 %) and a decrease in cervical lordosis angle by 1.54° (95 % CI of -4.16 to 1.08, I2 = 0 %). Conclusions Minimal uprighting of the cervical spine was noted with functional appliances. Fixed functional appliances exerted a greater effect than removable functional appliances. Cervical hyperlordosis was reduced with removable functional appliance treatment. Though these changes are minimal, the clinical orthodontist should be aware that functional therapy also influences cervical spine posture. Due to the heterogeneity and low quality of evidence, the results are to be considered critically.
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Affiliation(s)
- Sandhya Murali
- Department of Orthodontics and Dentofacial Orthopedics, Sri Ramachandra Dental College & Hospital, Sri Ramachandra Institute of Higher Education and Research (DU), Porur, Chennai, 600116, India
| | - Annapurna Kannan
- Department of Orthodontics and Dentofacial Orthopedics, Sri Ramachandra Dental College & Hospital, Sri Ramachandra Institute of Higher Education and Research (DU), Porur, Chennai, 600116, India
| | - Vignesh Kailasam
- Department of Orthodontics and Dentofacial Orthopedics, Sri Ramachandra Dental College & Hospital, Sri Ramachandra Institute of Higher Education and Research (DU), Porur, Chennai, 600116, India
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Sandoval C, Díaz A, Manríquez G. Assessing cervical spine and craniofacial morphology in Class II and Class III malocclusions: A geometric morphometric approach. Cranio 2024; 42:450-460. [PMID: 34623215 DOI: 10.1080/08869634.2021.1987040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
To compare craniofacial and cervical morphology between skeletal Classes II and III applying Geometric Morphometric Methods (GMM). Twenty-six cervical and craniofacial landmarks of 40 Class II and 39 Class III individuals were digitalized on lateral cephalograms. Procrustes ANOVA, generalized Procrustes, principal component analyses, and thin-plate spline function were applied to assess the pattern of shape variation of craniofacial structure and the cervical spine in relation to skeletal classes. Compared with Class III, Class II individuals presented a maxillary protrusion, mandibular retrusion, shorter mandibular corpus, posterior mandibular ramus rotation, anterior cranial base rotation, and a smaller centroid size. Furthermore, a forward and smaller cervical spine were observed. With GMM, the shape and size differences between skeletal classes can be analyzed visually and numerically.
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Affiliation(s)
| | - Alejandro Díaz
- Centre for Quantitative Analysis in Dental Anthropology (Ca2), Faculty of Dentistry, University of Chile
| | - Germán Manríquez
- Centre for Quantitative Analysis in Dental Anthropology (Ca2), Faculty of Dentistry, University of Chile
- Institute of Dental Research, Physics Group, Faculty of Dentistry, University of Chile
- Physical Anthropology Group, Faculty of Social Sciences, University of Chile, Santiago, Chile
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Peng H, Liu W, Yang L, Yan P, Zhong W, Gao X, Song J. Craniocervical posture in patients with skeletal malocclusion and its correlation with craniofacial morphology during different growth periods. Sci Rep 2024; 14:5280. [PMID: 38438541 PMCID: PMC10912775 DOI: 10.1038/s41598-024-55840-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 02/28/2024] [Indexed: 03/06/2024] Open
Abstract
The association between craniocervical posture and craniofacial structures in the various sagittal skeletal malocclusion during different growth stages has been the focus of intense interest in fields of orthodontics, but it has not been conclusively demonstrated. Thus, this study aimed to investigate the association between craniofacial morphology and craniocervical posture in patients with sagittal skeletal malocclusion during different growth periods. A total of 150 from a large pool of cephalograms qualified for the inclusion and exclusion were evaluated and classified into three groups according to the Cervical Vertebral Maturation (CVM) by examining the morphological modifications of the second through fourth cervical vertebrae, each group consisted of 50 cephalograms. In each growth period, for the comparison of head and cervical posture differences among various skeletal classes, the radiographs were further subdivided into skeletal Class I (0° < ANB < 5°, n = 16), skeletal Class II (ANB ≥ 5°, n = 18), and skeletal Class III (0° ≤ ANB, n = 16) on the basis of their ANB angle. There was no significant difference in gender (P > 0.05). Some variables were found to be significant during pubertal growth and later in patients with sagittal skeletal malocclusion (P < 0.05). Most indicators describing craniocervical posture were largest in skeletal Class II and smallest in skeletal Class III during the peak growth periods and later. Cervical inclination variables were greater in skeletal Class III than in skeletal Class II. Variables of craniofacial morphology and craniocervical posture are more correlated during the pubertal growth period and later in patients with sagittal skeletal malocclusion. A tendency is an indication of the close interrelationship that a more extended head was in skeletal Class II while a flexed head was in skeletal Class III. Nevertheless, with the considerations of some limitations involved in this study, further longitudinal studies with large samples are required to elucidate the relationship clearly.
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Affiliation(s)
- Houli Peng
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Weihan Liu
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China
- Department of Orthodonticsrthodontics, Chongqing University Three Gorges Hospital, Chongqing, 404000, China
| | - Lanxin Yang
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Pingping Yan
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Wenjie Zhong
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Xiang Gao
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China.
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China.
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China.
| | - Jinlin Song
- College of Stomatology, Chongqing Medical University, Chongqing, 401147, China.
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China.
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China.
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Öztürk K, Danışman H, Akkoca F. The effect of temporomandibular joint dysfunction on the craniocervical mandibular system: A retrospective study. J Oral Rehabil 2024; 51:469-475. [PMID: 37983893 DOI: 10.1111/joor.13622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/30/2023] [Accepted: 10/28/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND Temporomandibular disorders are the most common condition affecting the orofacial region, resulting in pain and dysfunction. OBJECTIVE This study aimed to elucidate the ambiguous association between cervical features and temporomandibular disorders by measuring the rotations between the skull-atlas, atlas-axis and mandible-atlas and examining the relationship between these rotations and temporomandibular disorders. METHODS Cone-beam computed tomography (CBCT) images from 176 patients, 97 females and 79 males with an average age of 25.7 years were used in this study. The patients were divided into two groups: those with joint dysfunction (n = 88) and those without (n = 88). The study employed various methods to determine rotations in the skull-atlas, atlas-axis and mandible atlas based on anatomical landmarks and measurements. These methods include the use of specific planes, angles and distances to identify and measure rotation. Data analysis was performed using the TURCOSA statistical software (Turcosa Analytics Ltd Co, Turkey, www.turcosa.com.tr). RESULTS The results showed that the degree of rotation between the skull and the atlas was higher in the TMD group than in the control group (p < .001). Similarly, Atlas-axis rotation was significantly higher in the TMD group (p < .001). However, no significant difference was found between mandible atlas rotations in the two groups (p = .546). The study also found a significant difference between the direction of rotation between the atlas and axis and the direction of mandible atlas rotation (p < .001) as well as between skull and atlas rotations and mandible-atlas rotations (p < .001). CONCLUSION Overall, the study suggests that there is a relationship between the skeletal structures of the cranio-cervico-mandibular system and TMD. Skull-atlas and atlas-axis rotations may play an important role in the aetiology of TMD in individuals with TMD. Therefore, it is important to evaluate rotations in the skull-atlas-axis region for the treatment of TMD.
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Affiliation(s)
- Kübra Öztürk
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Nuh Naci Yazgan University, Kayseri, Turkey
| | - Hikmetnur Danışman
- Department of Orthodontics, Faculty of Dentistry, Nuh Naci Yazgan University, Kayseri, Turkey
| | - Fatma Akkoca
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Nuh Naci Yazgan University, Kayseri, Turkey
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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] [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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Krishna SSS, Shashikumar B, Naik RD. Evaluation and Comparison of Cervical Spine Posture in Class II Division I Patients Treated with Twin Block Appliances, Forsus Appliances, and Bilateral Sagittal Split Osteotomy: A Cephalometric Study. Contemp Clin Dent 2023; 14:157-165. [PMID: 37547436 PMCID: PMC10399807 DOI: 10.4103/ccd.ccd_459_22] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 05/07/2023] [Accepted: 05/15/2023] [Indexed: 08/08/2023] Open
Abstract
Background It has been speculated that a change in cervical spine posture occurs due to forward repositioning of the mandible. Therefore, this study aimed to evaluate and compare the cervical spine posture in Class II division one patient treated with three different treatment modalities. Materials and Methods A retrospective cohort study was conducted using pre and post-treatment lateral cephalograms of Class II Division one patients who have undergone orthodontic therapy using twin block appliance, Forsus, and bilateral sagittal split osteotomy (BSSO). This study included a total of 57 subjects comprising 19 subjects in each group. Seven cervical, three sagittal, and one vertical parameters were compared within and between each group. The data were tested using the Dependent t-test, One-way analysis of variance, and Tukey's post hoc test. Results A significant difference existed between the pre- and post-treatment angular measurements within the three groups showing a change in the cervical spine posture with forward positioning of the mandible. A comparison of mean changes in angular measurements between the three groups showed a significant difference in SNA, SNB, ANB, and odontoid process tangent-cervical vertebral tangent (OPT-CVT), indicating a change in the cervical posture. Conclusion OPT-CVT angle predicts a change in cervical spine posture after treatment with a significant difference in the Twin Block group (P = 0.029) compared to Forsus and BSSO groups. Thus, the twin block group results in a more upright craniocervical posture than the other two treatment groups.
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Affiliation(s)
- S. S. Suji Krishna
- Department of Orthodontics and Dentofacial Orthopedics, Shri Dharmasthala Manjunatheshwara College of Dental Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, Karnataka, India
| | - B. Shashikumar
- Department of Orthodontics and Dentofacial Orthopedics, Shri Dharmasthala Manjunatheshwara College of Dental Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, Karnataka, India
| | - Roopak D. Naik
- Department of Orthodontics and Dentofacial Orthopedics, Shri Dharmasthala Manjunatheshwara College of Dental Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, Karnataka, India
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Peng H, Liu W, Yang L, Zhong W, Yin Y, Gao X, Song J. Does head and cervical posture correlate to malocclusion? A systematic review and meta-analysis. PLoS One 2022; 17:e0276156. [PMID: 36282836 PMCID: PMC9595508 DOI: 10.1371/journal.pone.0276156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 09/30/2022] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND The association of head and cervical posture with malocclusion has been studied for many years. Despite extensively encouraging researches, no conclusive evidence has been reached for clinical application. OBJECTIVE To identify the question "Does head and cervical posture correlate to malocclusion?", a systematic review and meta-analysis based on the available studies were carried out (PROSPERO registration number: CRD42022319742). METHODS A search of PubMed, Embase, Cochrane Library, and the grey literature was performed without language restrictions. The study screening, data extraction, risk-of-bias evaluation and methodological quality assessment were performed by two independent investigators. When a disagreement arose, a third author was consulted. RESULTS 6 original cross-sectional studies involving 505 participants were included, which were of moderate methodological quality. NL/VER in Class Ⅱ group and NL/CVT in Class Ⅲ group showed significant differences compared to Class Ⅰ group, but no significant differences were observed in most of the variables like NSL/VER, OPT/CVT, OPT/HOR, CVT/HOR, NSL/OPT, NSL/CVT, NL/OPT in Class Ⅱ and Ⅲ groups. CONCLUSIONS The results suggested that the current research evidence is not sound enough to prove the association of head and cervical posture with sagittal malocclusion. Better controlled design and a larger sample size are required for clarifying this question in future study.
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Affiliation(s)
- Houli Peng
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Weihan Liu
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Department of orthodontics, Chongqing University Three Gorges Hospital, Chongqing, China
| | - Lanxin Yang
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Wenjie Zhong
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yuanyuan Yin
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Xiang Gao
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- * E-mail: (XG); (JS)
| | - Jinlin Song
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- * E-mail: (XG); (JS)
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Relationship between Craniocervical Posture and Sagittal Position of the Mandible: A Systematic Review. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12115331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Changes in craniocervical posture are a critical issue in modern society. Alterations of the mandible position in the anterior-posterior direction in association with head and neck posture are reported. The objective of the present review was to evaluate the relationship between craniocervical posture and sagittal position of the mandible and to evaluate the risk of bias inthe included studies. Electronic databases used to perform the search were PubMed, Wiley Online Library, and Cochrane. Only clinical trials that assessed sagittal craniocervical posture and mandible position in lateral cephalograms were included. Selected inclusion criteria were used to assess the finally selected studies. The upper and lower cervical spine was evaluated by seven and six studies, respectively. The risk of bias in the included studies varied from low to moderate. Literature research identified 438 records from 3 databases. Eventually, seven eligible clinical trials were included in this review. Evaluating the relationship between craniocervical posture and mandible position in the sagittal plane, it can be concluded that increased cervical inclination and head upright position are associated with the posterior position of the mandible. Attention to patients’ craniocervical posture should be paid as a part of clinical evaluation since it might be the reason for the changed mandible position.
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Rodríguez-Olivos LHG, Chacón-Uscamaita PR, Quinto-Argote AG, Pumahualcca G, Pérez-Vargas LF. Deleterious oral habits related to vertical, transverse and sagittal dental malocclusion in pediatric patients. BMC Oral Health 2022; 22:88. [PMID: 35321719 PMCID: PMC8944101 DOI: 10.1186/s12903-022-02122-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 03/11/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Malocclusion is highly reported among mixed dentition cases. Therefore, we aimed to determine the relationship of dental malocclusions in the vertical, transverse, sagittal planes with deleterious habits in pediatric patients. METHODS A cross-sectional analytical study was carried out on 155 children aged 6-12 years attended at the clinic of the School of Dentistry of Universidad Nacional Mayor de San Marcos in 2017. RESULTS Among 155 evaluated patients, 45.3% had vertical malocclusion, 52.0% had sagittal malocclusion and 13.6% had transverse malocclusion. The most frequent type of malocclusion in the vertical plane was anterior deep bite (22.2%), in the transverse plane, the edge-to-edge bite (7.1%) and the anterior crossbite (6.5%) were less frequent. Finally, in the sagittal plane, Class II Div 1 (20%) and Class III (20.7%) were the most frequent. Among the most common deleterious habits, anteroposition (58.7%) and mixed breathing (51.0%) were observed in contrast to the habit of retroposition, lip sucking and mouth breathing, which were the least frequent. Considering age and sex, children who have an atypical swallowing habit are more likely to have malocclusion in all three planes of space. CONCLUSIONS It is concluded that there is an association between the deleterious habits with the different types of malocclusions in the different planes of the space, being the atypical swallowing a habit that should be early diagnosed and treated interdisciplinary.
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Affiliation(s)
| | - Pamela Roxana Chacón-Uscamaita
- Emerge, Emerging Diseases and Climate Change Research Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru.
| | | | - Graciela Pumahualcca
- Emerge, Emerging Diseases and Climate Change Research Unit, School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
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Evaluation of the three-dimensional (3D) position of cervical vertebrae in individuals with unilateral posterior crossbite. Clin Oral Investig 2021; 26:463-469. [PMID: 34258675 DOI: 10.1007/s00784-021-04020-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 05/31/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To evaluate the three-dimensional (3D) position of the cervical vertebrae of growing subjects with unilateral posterior crossbite (UPC). MATERIALS AND METHODS In this cross-sectional study, cone beam computed tomography (CBCT) scans of 1455 patients were screened, and ultimately 58 scans (26 patients with UPC and 32 controls with normal occlusion) were included after imposing inclusion/exclusion criteria. Roll, yaw, and deviation of the geometric center of C1, C2, and C3 vertebrae were measured and compared between groups. A correlation between these parameters and different variables on mandibular positioning was also carried out. RESULTS A statistically significant difference (p < 0.05) was observed between groups for the deviation of pogonium (Pog), mandibular plane roll, and C3 roll, and patients with UPC showed higher cant or deviation. A significant correlation was reported for the roll of C2 and C3 with the deviation of Pog, a roll of the occlusal plane, and roll of the mandibular plane (p < 0.05). The greater the deviation of the Pog to one side, the greater the roll of the vertebrae with this same side up. The same tendency was observed between the roll of the occlusal plane or the mandibular plane with the roll of these cervical vertebrae. CONCLUSIONS There is a positive correlation between transverse occlusal changes and positional deviations of the cervical vertebrae, especially C2 and C3. CLINICAL RELEVANCE The study results do not allow us to infer the clinical/functional consequences of these deviations, as well as if malocclusion's treatment would result in an improvement of intervertebral relationships.
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Kerbrat A, Schouman T, Decressain D, Rouch P, Attali V. Interaction between posture and maxillomandibular deformity: a systematic review. Int J Oral Maxillofac Surg 2021; 51:104-112. [PMID: 34120792 DOI: 10.1016/j.ijom.2021.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/05/2021] [Accepted: 05/07/2021] [Indexed: 11/24/2022]
Abstract
Maxillomandibular deformity (MMD) and body posture appear to be correlated. However, no systematic literature review of the available evidence to support this correlation has been performed to date. The aim of this study was to conduct a systematic literature review on posture and MMD. This systematic literature review was registered in the PROSPERO database. Systematic searches of the MEDLINE, Scopus, Cochrane Library, and Web of Science databases were performed. In total, 13 clinical studies were included. Nine found a significant association between MMD and body posture or body balance: two studies showed a correlation between increased cervical lordosis and skeletal class III MMD, two studies showed an interaction between mandibular deviation and scoliosis, four studies demonstrated a significant association between lumbar column and pelvis anatomy and MMD, and one study found a correlation between displacement of the centre of mass and MMD. However, the level of evidence is low; the methods used to evaluate body posture and MMD were inconsistent. Orthognathic surgery could modify body posture. Although there seems to be an interaction between body posture and facial deformity, the number of studies is too small and the level of evidence too low to strongly support this association.
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Affiliation(s)
- A Kerbrat
- Service de Chirurgie Maxillo-Faciale, Sorbonne Université, APHP, Hôpital Pitié-Salpêtrière, Paris, France; Arts et Métiers Sciences et Technologies, Institut de Biomécanique Humaine Georges Charpak, Paris, France.
| | - T Schouman
- Service de Chirurgie Maxillo-Faciale, Sorbonne Université, APHP, Hôpital Pitié-Salpêtrière, Paris, France; Arts et Métiers Sciences et Technologies, Institut de Biomécanique Humaine Georges Charpak, Paris, France
| | - D Decressain
- Service de Chirurgie Maxillo-Faciale, Sorbonne Université, APHP, Hôpital Pitié-Salpêtrière, Paris, France
| | - P Rouch
- Arts et Métiers Sciences et Technologies, Institut de Biomécanique Humaine Georges Charpak, Paris, France
| | - V Attali
- Arts et Métiers Sciences et Technologies, Institut de Biomécanique Humaine Georges Charpak, Paris, France; Groupe Hospitalier Universitaire APHP - Sorbonne Université, site Pitié-Salpêtrière, Service des Pathologies du Sommeil (Département R3S), Paris, France; Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France
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12
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Oxilia G, Menghi Sartorio JC, Bortolini E, Zampirolo G, Papini A, Boggioni M, Martini S, Marciani F, Arrighi S, Figus C, Marciani G, Romandini M, Silvestrini S, Pedrosi ME, Mori T, Riga A, Kullmer O, Sarig R, Fiorenza L, Giganti M, Sorrentino R, Belcastro MG, Cecchi JM, Benazzi S. Exploring directional and fluctuating asymmetry in the human palate during growth. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2021; 175:847-864. [PMID: 33973654 PMCID: PMC8360102 DOI: 10.1002/ajpa.24293] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 03/23/2021] [Accepted: 04/09/2021] [Indexed: 01/20/2023]
Abstract
Objectives Palate morphology is constantly changing throughout an individual's lifespan, yet its asymmetry during growth is still little understood. In this research, we focus on the study of palate morphology by using 3D geometric morphometric approaches to observe changes at different stages of life, and to quantify the impact of directional and fluctuating asymmetry on different areas at different growth stages. Materials and Methods The sample consists of 183 individuals (1–72 years) from two identified human skeletal collections of 19th and early 20th Century Italian contexts. A 3D‐template of 41 (semi)landmarks was applied on digital palate models to observe morphological variation during growth. Results Asymmetrical components of the morphological structure appears multidirectional on the entire palate surface in individuals <2 years old and become oriented (opposite bilateral direction) between 2 and 6 years of age. Specifically, directional asymmetry differentially impacts palate morphology at different stages of growth. Both the anterior and posterior palate are affected by mild alterations in the first year of life, while between 2 and 6 years asymmetry is segregated in the anterior area, and moderate asymmetry affects the entire palatal surface up to 12 years of age. Our results show that stability of the masticatory system seems to be reached around 13–35 years first by females and then males. From 36 years on both sexes show similar asymmetry on the anterior area. Regarding fluctuating asymmetry, inter‐individual variability is mostly visible up to 12 years of age, after which only directional trends can be clearly observed at a group level. Discussion Morphological structure appears instable during the first year of life and acquires an opposite asymmetric bilateral direction between 2 and 6 years of age. This condition has been also documented in adults; when paired with vertical alteration, anterior/posterior asymmetry seems to characterize palate morphology, which is probably due to mechanical factors during the lifespan. Fluctuating asymmetry is predominant in the first period of life due to a plausible relationship with the strength of morphological instability of the masticatory system. Directional asymmetry, on the other hand, shows that the patterning of group‐level morphological change might be explained as a functional response to differential inputs (physiological forces, nutritive and non‐nutritive habits, para‐masticatory activity as well as the development of speech) in different growth stages. This research has implications with respect to medical and evolutionary fields. In medicine, palate morphology should be considered when planning orthodontic and surgical procedures as it could affect the outcome. As far as an evolutionary perspective is concerned the dominance of directional asymmetries in the masticatory system could provide information on dietary and cultural habits as well as pathological conditions in our ancestors.
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Affiliation(s)
- Gregorio Oxilia
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Jessica C Menghi Sartorio
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy.,Department of Enterprise Engineering, "Mario Lucertini" - Tor Vergata University, Rome, Italy
| | - Eugenio Bortolini
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Giulia Zampirolo
- Section for Evolutionary Genomics Øster Farimagsgade, University of Copenhagen, København, Denmark
| | - Andrea Papini
- Dentist's Surgery, via Walter Tobagi 35, Prato, 59100, Italy
| | - Marco Boggioni
- Dentist's Surgery, via D'Andrade 34/207, Genoa Sestri Ponente, 16154, Italy
| | - Sergio Martini
- Dental Lab Technician, via Milani, 1, Verona, 37124, Italy
| | - Filippo Marciani
- Dentist's Surgery, Studio Dentistico Marciani Dr. Filippo, Via Romagnoli, 14, Lanciano, 66034, Italy
| | - Simona Arrighi
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Carla Figus
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Giulia Marciani
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Matteo Romandini
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Sara Silvestrini
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy
| | - Maria Elena Pedrosi
- Department of Biological, Geological and Environmental Sciences-, BiGeA University of Bologna, Bologna, Italy
| | - Tommaso Mori
- Department of Biology, University of Florence, Florence, Italy
| | - Alessandro Riga
- Department of Biology, University of Florence, Florence, Italy
| | - Ottmar Kullmer
- Senckenberg Research Institute, Senckenberganlage 25, Frankfurt am Main, 60325, Germany.,Department of Paleobiology and Environment, Institute of Ecology, Evolution, and Diversity, Johann Wolfgang Goethe University, Frankfurt, Germany
| | - Rachel Sarig
- Department of Oral biology, The Goldschleger School of Dental Medicine and the Dan David Center for Human Evolution, the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Luca Fiorenza
- Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, Melbourne, Victoria, Australia
| | - Melchiore Giganti
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy.,Radiology University Unit, University Hospital, Ferrara, Italy
| | - Rita Sorrentino
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy.,Department of Biological, Geological and Environmental Sciences-, BiGeA University of Bologna, Bologna, Italy
| | - Maria Giovanna Belcastro
- Department of Biological, Geological and Environmental Sciences-, BiGeA University of Bologna, Bologna, Italy
| | | | - Stefano Benazzi
- Department of Cultural Heritage, University of Bologna, Ravenna, Italy.,Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
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13
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Shi M, Liu X, Zhang C, Zhang H, Liu Q, Wang D, Liu X, Li J, Wang M. Effect of dental malocclusion on cerebellar neuron activation via the dorsomedial part of the principal sensory trigeminal nucleus. Eur J Oral Sci 2021; 129:e12788. [PMID: 33945647 PMCID: PMC8453929 DOI: 10.1111/eos.12788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 03/10/2021] [Accepted: 03/12/2021] [Indexed: 11/30/2022]
Abstract
Occlusion has been proposed to play a role for body posture and balance, both of which are mediated mainly by the cerebellum. The dorsomedial part of the principal sensory trigeminal nucleus (Vpdm) has direct projection to the cerebellum. The experimental unilateral anterior crossbite (UAC) has an impact on the motor nuclei in the brain stem via trigeminal mesencephalic nucleus (Vme). The current aim was to explore whether UAC has an impact on Vpdm‐cerebellum circuit. The inferior alveolar nerve was injected into cholera toxin B subunit (CTb), the cerebellum was injected into fluoro‐gold (FG), and the Vpdm was injected into biotinylated dextran amine (BDA) to identify the activation of Vpdm‐cerebellum circuit by UAC. Data indicated that there were more neuronal nuclei (NeuN)/CTb/FG triple‐labelled neurons and NeuN/CTb/vesicular glutamate transporter 1(VGLUT1) triple‐labelled neurons in the Vpdm, and more NeuN/BDA/ VGLUT1 triple‐labelled neurons in the cerebellum of rats with UAC than in control rats. The VGLUT1 expression in the Vpdm and cerebellum in the UAC group was higher than that in control rats. These findings indicate an excitatory impact of UAC on the Vpdm‐cerebellum pathway and support the role of occlusion for body posture and balance.
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Affiliation(s)
- Minghong Shi
- School of Stomatology, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China.,Department of Oral Anatomy and Physiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Xin Liu
- Department of Oral Anatomy and Physiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,Department of Stomatology, The 960th Hospital of People's Liberation Army, Jinan, China
| | - Chunkui Zhang
- Department of Anatomy, Histology and Embryology and K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Hongyun Zhang
- Department of Oral Anatomy and Physiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Qian Liu
- Department of Oral Anatomy and Physiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Dongmei Wang
- School of Stomatology, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Xiaodong Liu
- Department of Oral Anatomy and Physiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Jinlian Li
- Department of Anatomy, Histology and Embryology and K.K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, China
| | - Meiqing Wang
- School of Stomatology, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China.,Department of Oral Anatomy and Physiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
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14
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Santos JGL, Montezuma T, Perez CS, Sverzut CE, Trivellato AE, Guirro ECDO. Body postural realignment in the first 2 months after orthognathic surgery. Am J Orthod Dentofacial Orthop 2021; 159:e281-e290. [PMID: 33487498 DOI: 10.1016/j.ajodo.2020.10.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 08/01/2020] [Accepted: 10/01/2020] [Indexed: 12/12/2022]
Abstract
INTRODUCTION This study aimed to assess the static posture in patients with Angle Class II and III malocclusions in the first 2 months after orthognathic surgery. METHODS This was a longitudinal observational study. Eligible participants were adult patients who had an indication of orthognathic surgery (bilateral sagittal split osteotomy of the maxilla and/or mandible, can be associated or not with genioplasty). Thirty-five patients were evaluated from the orthognathic surgery group (OSG) and control group (CG). Measurements in OSG were performed at 3 time points: preoperative orthognathic surgery (P0), first postoperative month (P1), and second postoperative month (P2). Static posture was evaluated using the PostureScreen Mobile (PostureCo Inc, Trinity, Fla) application in 4 views. RESULTS Patients with Angle Class II malocclusion in the OSG evidenced a tendency to a left hip translation at P1 with a significant difference at P2 in the anterior view (P = 0.052). In the right lateral view, patients with Angle Class II malocclusion in the OSG at P1 presented an accentuated anterior shoulder translation when compared with CG (P <0.001). At P1, patients with Angle Class II malocclusion in the OSG showed a significant anterior knee translation compared with the CG and OSG at P0 and P2 (P <0.001 for all). Patients in the OSG with Angle Class III malocclusion presented an average posterior head translation in the right lateral view at P1 when compared with those in the CG and OSG at P0, who presented an anterior translation (P = 0.0008). CONCLUSIONS These findings suggest a realignment of static posture in the first 2 months after orthognathic surgery.
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Affiliation(s)
- Joselia Gomes Lima Santos
- Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Thais Montezuma
- Postgraduate Program in Rehabilitation and Functional Performance, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Carla Silva Perez
- Postgraduate Program in Rehabilitation and Functional Performance, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cassio Edvard Sverzut
- Department of Buccomaxillofacial Surgery, Traumatology, and Periodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre Elias Trivellato
- Department of Buccomaxillofacial Surgery, Traumatology, and Periodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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15
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Nath M, Ahmed J, Ongole R, Denny C, Shenoy N. CBCT analysis of pharyngeal airway volume and comparison of airway volume among patients with skeletal Class I, Class II, and Class III malocclusion: A retrospective study. Cranio 2019; 39:379-390. [DOI: 10.1080/08869634.2019.1652993] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Mandovi Nath
- Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
| | - Junaid Ahmed
- Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
| | - Ravikiran Ongole
- Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
| | - Ceena Denny
- Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
| | - Nandita Shenoy
- Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
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16
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Chane L, Kily JP, Marangelli G, Gebeile-Chauty S. [Somatic dysfunctions of the cervical spine and fixed orthodontic treatment: a 145 subjects-cross sectional study]. Orthod Fr 2019; 90:119-126. [PMID: 31241454 DOI: 10.1051/orthodfr/2019014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 02/10/2019] [Indexed: 06/09/2023]
Abstract
UNLABELLED Objectives : The aim of this blind cross-sectional study is to evaluate the influence of a fixed orthodontic appliance on the cervical spine. MATERIALS AND METHODS Number and severity of somatic dysfunctions (i.e. alteration of the function of an element constituting the somatic system or SD) of the cervical spine have been searched on patients sorted out in three groups: subjects without orthodontic treatment (group 1), subjects wearing fixed orthodontic appliance (group 2) and subjects in a retention period after removal of the fixed orthodontic appliance (group 3) and were compared thanks to khi2 test. RESULTS A total of 145 patients from 6 to 17 years old was included. There are more SD in the second group (p = 0.006) than in the first group. There is no difference between the 1st and the 3rd group (p = 0.2), between the 2nd and the 3rd group (p = 0.4) and between the three groups (p = 0.6) concerning the severity of SD. CONCLUSION Cervical disorders should not be attributed to long-term multi-attachment treatment since once the active orthodontic treatment is finished, the SD are not significantly increased compared to the control group. These results may encourage to make a study to evaluate benefits of cervical osteopathic follow-up for patients at risk after the setting of the fixed appliance.
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Affiliation(s)
- Loïc Chane
- CEESO Lyon, 39 rue Pasteur, Lyon 69007, France
| | - Jean-Pascal Kily
- Maison médicale, 17 impasse Petrus Vitel, 69700 Loire sur Rhone, France
| | | | - Sarah Gebeile-Chauty
- Département d'Orthopédie Dento-Faciale, Faculté d'Odontologie, 11 rue Guillaume Paradin, 69372 Lyon cedex 08, France
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17
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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] [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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18
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Munhoz WC, Hsing WT. The inconclusiveness of research on functional pathologies of the temporomandibular system and body posture: Paths followed, paths ahead: A critical review. Cranio 2019; 39:254-265. [PMID: 31035908 DOI: 10.1080/08869634.2019.1603585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objective: Literature on the functional pathologies of the temporomandibular system (FPTS) in its relationships with body posture is plagued with inconclusiveness. Despite being sometimes altogether disregarded, the issue is most relevant, due to its clinical implications. This paper aims for a deeper understanding of the origins of the inconclusiveness of research on such relationships by means of a critical analysis of the scientific literature on the subject, in order that clinicians may better treat patients with FPTS.Methods: Analysis of over 100 studies, published from 1918 through March 2018 in the PubMed database, using descriptors temporomandibular joint disorders and posture.Results: The analysis of the paths followed by researchers allowed for pinning down several methodological issues that may have led to the prevailing ambiguity on the matter.Conclusion: This review then proposes certain standardization of procedures in future studies, to be conducted by a proposed consortium of researchers.
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Affiliation(s)
- Wagner Cesar Munhoz
- Formerly Faculdade de Medicina, University of São Paulo (USP), São Paulo, Brazil
| | - Wu Tu Hsing
- Department of Pathology, Faculdade de Medicina, University of São Paulo (USP), São Paulo, Brazil
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19
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L Blum C. The many faces of forward head posture: the importance of differential diagnosis. Cranio 2019; 37:143-146. [PMID: 30973096 DOI: 10.1080/08869634.2019.1594003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Charles L Blum
- a Research Chair , Sacro Occipital Technique Organization , Santa Monica , CA , USA
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20
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Julià-Sánchez S, Álvarez-Herms J, Burtscher M. Dental occlusion and body balance: A question of environmental constraints? J Oral Rehabil 2019; 46:388-397. [DOI: 10.1111/joor.12767] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 01/05/2019] [Accepted: 01/13/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Sonia Julià-Sánchez
- Departament de Fisiologia i Immunologia; Universitat de Barcelona (UB); Barcelona Spain
| | - Jesús Álvarez-Herms
- Departament de Fisiologia i Immunologia; Universitat de Barcelona (UB); Barcelona Spain
| | - Martin Burtscher
- Department of Sport Science; University Innsbruck; Innsbruck Austria
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21
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Iacob SM, Chisnoiu AM, Lascu LM, Berar AM, Studnicska D, Fluerasu MI. Is PostureScreen® Mobile app an accurate tool for dentists to evaluate the correlation between malocclusion and posture? Cranio 2018; 38:233-239. [PMID: 30198398 DOI: 10.1080/08869634.2018.1512197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To determine whether PostureScreen® Mobile app is a useful, simple tool that is accessible for dentists to evaluate the correlation between malocclusion and posture. METHODS Twenty-nine subjects underwent static and dynamic dental occlusion examinations and a postural exam with PostureScreen® Mobile app, a photographic method. The subjects were divided into groups depending on their static and dynamic occlusion features. The postural parameters were then compared between these groups. RESULTS Statistically significant differences (p < 0.05) for some postural parameters were obtained for Angle Class 1 vs. 2 and 3 and for the passive interference group and active premature contacts group during left lateral movement. There were no statistically significant differences regarding protrusion and right lateral movement. DISCUSSION Dental occlusion anomalies and posture pathological modifications can be inter-related. PostureScreen® Mobile app might represent a useful tool in the early diagnosis of dental occlusion pathology.
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Affiliation(s)
- Simona Maria Iacob
- Department of Prosthetic Dentistry, University of Medicine and Pharmacy , Cluj Napoca, Romania
| | - Andrea Maria Chisnoiu
- Department of Prosthetic Dentistry, University of Medicine and Pharmacy , Cluj Napoca, Romania
| | - Liana Maria Lascu
- Department of Prosthetic Dentistry, University of Medicine and Pharmacy , Cluj Napoca, Romania
| | - Antonela Marcela Berar
- Department of Prosthetic Dentistry, University of Medicine and Pharmacy , Cluj Napoca, Romania
| | - Daniela Studnicska
- Department of Anesthesiology and Intensive Care, Department of Chronic Pain, CH Marmande-Tonneins , Marmande, France
| | - Mirela Ioana Fluerasu
- Department of Prosthetic Dentistry, University of Medicine and Pharmacy , Cluj Napoca, Romania
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22
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Changes in Cervical Lordosis After Orthognathic Surgery in Skeletal Class III Patients. J Craniofac Surg 2018; 29:e598-e603. [DOI: 10.1097/scs.0000000000004644] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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23
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Camoin A, Tardieu C, Blanchet I, Orthlieb JD. [Sleep bruxism in children]. Arch Pediatr 2017; 24:659-666. [PMID: 28587727 DOI: 10.1016/j.arcped.2017.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 01/13/2017] [Accepted: 04/12/2017] [Indexed: 11/26/2022]
Abstract
Bruxism is defined as repetitive activity of the masticatory muscles, characterized by clenching the teeth or teeth grinding and/or by tapping and swaying. This study investigated sleep bruxism. The etiology is multifactorial: mainly central (neuropathic disorder, anxiety) but also genetic and local (posture, mouth breathing). The diagnosis is based primarily on the anamnesis and examination of dental wear and progression over time (photos and dental castings). A diagnostic guide is proposed in this article. Frequently found in children, bruxism is not always considered pathological. The severity criteria relate intensity (number of dental attrition facets) as well as the context found in children: anxiety, ventilation disorders, and fragile dental structures. Management is multidisciplinary and depends on the etiologic diagnosis.
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Affiliation(s)
- A Camoin
- Service d'odontologie, hôpital Timone, Aix-Marseille université, AP-HM, 27, boulevard Jean-Moulin, 13385 Marseille, France.
| | - C Tardieu
- Service d'odontologie, hôpital Timone, Aix-Marseille université, AP-HM, 27, boulevard Jean-Moulin, 13385 Marseille, France; Aix-Marseille université, 13385 Marseille, France; ADES UMR 7268, service d'odontologie, hôpital Timone, AP-HM, 13385 Marseille, France
| | - I Blanchet
- Service d'odontologie, hôpital Timone, Aix-Marseille université, AP-HM, 27, boulevard Jean-Moulin, 13385 Marseille, France
| | - J-D Orthlieb
- Service d'odontologie, hôpital Timone, Aix-Marseille université, AP-HM, 27, boulevard Jean-Moulin, 13385 Marseille, France
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Smailienė D, Intienė A, Dobradziejutė I, Kušleika G. Effect of Treatment with Twin-Block Appliances on Body Posture in Class II Malocclusion Subjects: A Prospective Clinical Study. Med Sci Monit 2017; 23:343-352. [PMID: 28107314 PMCID: PMC5279871 DOI: 10.12659/msm.899088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background There is strong evidence that malocclusion and body posture are interdependent. The relationship between improvement of nasopharyngeal airway, correction of malocclusion by orthodontic treatment or orthognathic surgery, and changes in body posture were evaluated in several studies. The purpose of the present study was to analyze the effect of the orthodontic treatment with Twin-block appliance on body posture. Material/Methods The study group consisted of 23 children (mean age 12.45 (1.06) years). They were orthopedically (back shape analysis) and orthodontically (cephalometric radiograph analysis) examined before the treatment with Twin-block appliance and 10–14 months after the beginning of treatment. Results Treatment with Twin-block appliance caused mandibular protrusion as SNB increased by 0.91°, distance Ar-B increased by 4.9 mm, ANB decreased by 0.15°; and increase of face height. Oropharynx airway increased by 1.54 mm and deep pharynx airway by 1.08 mm. The decrease in kyphotic, lordotic, craniocervical angles, upper thoracic, pelvic, and trunk inclinations was found to be statistically significant. When comparing orthopedic measurements between study and control groups, no differences were detected. The control group also showed reduction of all measured angles. Although the decrease of kyphotic angle, upper thoracic inclination, trunk inclination, and craniocervical angle were more pronounced in the study group, the differences were not significant. Conclusions Based on these results, the body posture changes during treatment with Twin-block appliance were an expression of the physiological growth, not a response to improvement in occlusion.
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Affiliation(s)
- Dalia Smailienė
- Department of Orthodontics, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Aistė Intienė
- Department of Orthodontics, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Irma Dobradziejutė
- Department of Orthopedic Traumatology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Gintaras Kušleika
- Department of Orthopedic Traumatology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
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Scharnweber B, Adjami F, Schuster G, Kopp S, Natrup J, Erbe C, Ohlendorf D. Influence of dental occlusion on postural control and plantar pressure distribution. Cranio 2016; 35:358-366. [DOI: 10.1080/08869634.2016.1244971] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Benjamin Scharnweber
- Department of Prosthodontics, School of Dentistry, “Carolinum”, Goethe-University Frankfurt/Main, Frankfurt/Main, Germany
| | - Frederic Adjami
- Department of Orthodontics, School of Dentistry, Goethe-University, Frankfurt/Main, Germany
| | - Gabriele Schuster
- Department of Orthodontics, School of Dentistry, Goethe-University, Frankfurt/Main, Germany
| | - Stefan Kopp
- Department of Orthodontics, School of Dentistry, Goethe-University, Frankfurt/Main, Germany
| | - Jörg Natrup
- Gesellschaft für Biomechanik Münster, Münster, Germany
| | - Christina Erbe
- Department of Orthodontics, School of Dentistry, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Daniela Ohlendorf
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Frankfurt/Main, Germany
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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] [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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Gomes LDCR, Horta KOC, Goncalves JR, Santos-Pinto AD. Systematic Review: Craniocervical posture and craniofacial morphology. Eur J Orthod 2013; 36:55-66. [DOI: 10.1093/ejo/cjt004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Fournier R, Aknin JJ, Bourgier S, Gebeile-Chauty S. [Dento-facial orthopedics and osteopathy]. Orthod Fr 2011; 82:331-40. [PMID: 22105682 DOI: 10.1051/orthodfr/2011138] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Accepted: 03/24/2011] [Indexed: 11/14/2022]
Abstract
Osteopathy has grown rapidly. Given their common action on children and adolescents, the collaboration between dentofacial orthopedics and osteopathy is increasingly common. It therefore becomes necessary and urgent to investigate whether, based on data acquired from science, there is evidence of possible interrelations between the two disciplines. After reviewing the literature, very few scientific publications demonstrate the utility of osteopathy and its relationships with other disciplines. However, the relationship between occlusion and posture seem relatively proven, especially in the sagittal direction. On the other hand, although the mobility of the cranial bones is established, the primary respiratory motion is still subject to controversy, even among osteopaths. This, even as orthodontics has long been accused of countering the primary respiratory motion of cranial bones (PRM). Today osteopaths do not reject orthodontics anymore, because the return to a physiological bite situation is considered beneficial. According to expert opinion (without proof, however), some orthodontic devices (like headgears) which block the sutures are still to be avoided and require appropriate monitoring osteopathy. The controversy over the adverse effects of orthodontic treatment is becoming more nuanced by osteopaths, and modern orthodontics claiming a «global» approach of patient, collaboration may be possible in future year.
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Heredia Rizo AM, Cabello MA, Pozo FP, Carrasco AL. La postura del segmento craneocervical y su relación con la oclusión dental y la aplicación de ortodoncia: estudio de revisión. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/s1886-9297(10)70017-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Lippold C, Segatto E, Végh A, Drerup B, Moiseenko T, Danesh G. Sagittal back contour and craniofacial morphology in preadolescents. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2010; 19:427-34. [PMID: 19946733 PMCID: PMC2899761 DOI: 10.1007/s00586-009-1218-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2009] [Revised: 10/31/2009] [Accepted: 11/05/2009] [Indexed: 10/20/2022]
Abstract
The aim of this study was to analyze the correlation ratios between the sagittal back contour (flèche cervicale and lombaire, trunk inclination) and selected parameters of craniofacial morphology in children. The patient sample consisted of 66 healthy children with a mean age of 11.2 years (SD 1.6 years), of which 34 were male (mean age 11.5 years, SD 1.3 years) and 32 were females (mean age 10.9 years, SD 1.9 years). The children were recruited during the preparation of the initial orthodontic treatment records. Craniofacial morphology was analyzed by six angular measurements: facial axis, mandibular plane angle, inner gonial angle, lower facial height, facial depth and maxilla position. Rasterstereography was used for reconstruction of the spinal back sagittal profile. From the profile flèche cervicale, flèche lombaire and trunk inclination were determined and the correlations with the craniofacial morphology were calculated (Pearson and Mann-Whitney U test). Significant correlations were found with respect to the inner gonial angle and the flèche cervicale, the mandibular plane angle and the flèche lombaire, the inner gonial angle and the flèche lombaire, and the angular lower facial height and the flèche lombaire, as well as the inner gonial angle and the trunk inclination. The craniofacial vertical growth pattern, presented by mandibular plane angle, inner gonial angle and the angular lower facial height, and the correlation to flèche cervicale and lombaire as well as trunk inclination reveal correlations between growth pattern and sagittal back contour.
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Affiliation(s)
- Carsten Lippold
- Department of Orthodontics, University of Münster, Waldeyerstr.30, 48129 Munster, Germany
| | - Emil Segatto
- Department of Orofacial Orthopedics and Orthodontics, Heim Pál Children’s Hospital, Budapest, Zoltán str.10, 1054 Budapest, Hungary
| | - András Végh
- Department of Orofacial Orthopedics and Orthodontics, Heim Pál Children’s Hospital, Budapest, Zoltán str.10, 1054 Budapest, Hungary
| | - Burkhard Drerup
- Klinik und Poliklinik für Technische Orthopädie & Rehabilitation, Universtätsklinikum, Albert-Schweitzer-Str.33, 48129 Munster, Germany
| | - Tatjana Moiseenko
- Department of Orthodontics, University of Münster, Waldeyerstr.30, 48129 Munster, Germany
| | - Gholamreza Danesh
- Department of Orthodontics, University of Münster, Waldeyerstr.30, 48129 Munster, Germany
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Pachì F, Turlà R, Checchi AP. Head Posture and Lower Arch Dental Crowding. Angle Orthod 2009; 79:873-9. [DOI: 10.2319/060708-595.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2008] [Accepted: 11/01/2008] [Indexed: 11/23/2022] Open
Abstract
Abstract
Objective: To test the null hypothesis that there is no relationship between the posture of the head and the neck and late lower arch crowding.
Materials and Methods: The sample comprised 55 subjects (23 female, 32 male), age 12–18 years, with complete permanent dentition and without previous orthodontic treatment. Space conditions were valued by Nance's space analysis on the study models. Craniovertical, craniocervical, and craniohorizontal postural variables were recorded from lateral cephalograms. Student's t-test was performed to assess the differences of the postural angles between the two groups.
Results: The results showed that the differences of the postural variables between the two groups are statistically significant. Subjects with more than 2 mm dental crowding had mean craniocervical angles (NSL/CVT, NSL/OPT, NL/CVT, NL/OPT) that were 5° to 6° larger than the subjects with the space conditions smaller than 2 mm (P ≤ .01). In addition, the mean craniohorizontal angles (CVT/Hor, OPT/Hor) in the subjects with lower dental crowding were 4° smaller than subjects without dental crowding (P < .05).
Conclusions: The hypothesis is rejected. A clear pattern of association between extended head posture and lower arch dental crowding was found.
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Affiliation(s)
- Francesco Pachì
- a Assistant Professor, Department of Orthodontics, School of Dentistry, University of Rome “Tor Vergata,” Rome, Italy
| | - Ruggero Turlà
- b Research Fellow, Department of Orthodontics, School of Dentistry, University of Rome “Tor Vergata,” Rome, Italy
| | - Alessandro Proietti Checchi
- b Research Fellow, Department of Orthodontics, School of Dentistry, University of Rome “Tor Vergata,” Rome, Italy
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Grosland NM, Bafna R, Magnotta VA. Automated hexahedral meshing of anatomic structures using deformable registration. Comput Methods Biomech Biomed Engin 2009; 12:35-43. [PMID: 18688764 DOI: 10.1080/10255840903065134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
This work introduces a novel method of automating the process of patient-specific finite element (FE) model development using a mapped mesh technique. The objective is to map a predefined mesh (template) of high quality directly onto a new bony surface (target) definition, thereby yielding a similar mesh with minimal user interaction. To bring the template mesh into correspondence with the target surface, a deformable registration technique based on the FE method has been adopted. The procedure has been made hierarchical allowing several levels of mesh refinement to be used, thus reducing the time required to achieve a solution. Our initial efforts have focused on the phalanx bones of the human hand. Mesh quality metrics, such as element volume and distortion were evaluated. Furthermore, the distance between the target surface and the final mapped mesh were measured. The results have satisfactorily proven the applicability of the proposed method.
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Affiliation(s)
- Nicole M Grosland
- Department of Biomedical Engineering, The University of Iowa, Iowa City, IA, USA.
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Amat P. Occlusion, orthodontics and posture: are there evidences? The example of scoliosis. INTERNATIONAL JOURNAL OF STOMATOLOGY & OCCLUSION MEDICINE 2009. [DOI: 10.1007/s12548-009-0001-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Vélez AL, Restrepo CC, Peláez-Vargas A, Gallego GJ, Alvarez E, Tamayo V, Tamayo M. Head posture and dental wear evaluation of bruxist children with primary teeth. J Oral Rehabil 2008; 34:663-70. [PMID: 17716265 DOI: 10.1111/j.1365-2842.2007.01742.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
UNLABELLED The aim of the present study was to compare the head position and dental wear of bruxist and non-bruxist children with primary dentition. METHODS All the subjects had complete primary dentition, dental and skeletal class I occlusion and were classified as bruxist or non-bruxist according to their anxiety level, bruxism described by their parents and signs of temporomandibular disorders. The dental wear was drawn in dental casts and processed in digital format. Physiotherapeutic evaluation and a cephalometric radiograph with natural head position were also performed for each child to evaluate the cranio-cervical position for the bruxist group (n = 33) and the control group (n = 20). The variables of the two groups were compared, using the Student t-test and Mann-Whitney U-test. RESULTS A more anterior and downward head tilt was found in the bruxist group, with statistically significant differences compared with the controls. More significant dental wear was observed in the bruxist children. CONCLUSIONS Bruxism seems to be related to altered natural head posture and more intense dental wear. Further studies are necessary to explore bruxism mechanisms.
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