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Hellmann D, Fadillioglu C, Kanus L, Möhler F, Schindler HJ, Schmitter M, Stein T, Ringhof S. Influence of oral motor tasks on postural muscle activity during dynamic reactive balance. J Oral Rehabil 2024; 51:1041-1049. [PMID: 38491728 DOI: 10.1111/joor.13659] [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: 10/24/2023] [Revised: 01/06/2024] [Accepted: 02/05/2024] [Indexed: 03/18/2024]
Abstract
BACKGROUND Jaw clenching improves dynamic reactive balance on an oscillating platform during forward acceleration and is associated with decreased mean sway speed of different body regions. OBJECTIVE It is suggested that jaw clenching as a concurrent muscle activity facilitates human motor excitability, increasing the neural drive to distal muscles. The underlying mechanism behind this phenomenon was studied based on leg and trunk muscle activity (iEMG) and co-contraction ratio (CCR). METHODS Forty-eight physically active and healthy adults were assigned to three groups, performing three oral motor tasks (jaw clenching, tongue pressing against the palate or habitual lower jaw position) during a dynamic one-legged stance reactive balance task on an oscillating platform. The iEMG and CCR of posture-relevant muscles and muscle pairs were analysed during platform forward acceleration. RESULTS Tongue pressing caused an adjustment of co-contraction patterns of distal muscle groups based on changes in biomechanical coupling between the head and trunk during static balancing at the beginning of the experiment. Neither iEMG nor CCR measurement helped detect a general neuromuscular effect of jaw clenching on the dynamic reactive balance. CONCLUSION The findings might indicate the existence of robust fixed patterns of rapid postural responses during the important initial phases of balance recovery.
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Affiliation(s)
- Daniel Hellmann
- Department of Prosthodontics, University of Würzburg, Würzburg, Germany
- Dental Academy for Continuing Professional Development, Karlsruhe, Germany
| | - Cagla Fadillioglu
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Lisa Kanus
- Department of Prosthodontics, University of Würzburg, Würzburg, Germany
| | - Felix Möhler
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Hans J Schindler
- Dental Academy for Continuing Professional Development, Karlsruhe, Germany
| | - Marc Schmitter
- Department of Prosthodontics, University of Würzburg, Würzburg, Germany
| | - Thorsten Stein
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Steffen Ringhof
- Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany
- Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Miçooğulları M, Yüksel İ, Angın S. Efficacy of scapulothoracic exercises on proprioception and postural stability in cranio-cervico-mandibular malalignment: A randomized, double-blind, controlled trial. J Back Musculoskelet Rehabil 2024:BMR230323. [PMID: 38427467 DOI: 10.3233/bmr-230323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
BACKGROUND Cranio-cervico-mandibular (CCM) malalignment is associated with forward head posture (FHP) and temporomandibular joint (TMJ) disorders and affects masticatory muscles. OBJECTIVE This randomized, double-blind controlled trial aimed to compare the efficacy of scapula-thoracic (ST) exercises on temporomandibular and cervical joint position sense and postural stability in individuals with CCM malalignment. METHODS Fourty-nine participants with CCM malalignment were randomly assigned to the ST exercise group (STEG, n= 24) or the control group (CG, n= 25). STEG included progressive strengthening, proprioceptive, and stabilization exercises. All participants were assessed before treatment, at the end of the 8th week treatment period and at the 12th week post-treatment follow-up. Cranio-vertebral angle measurement, Fonseca's Questionnaire, Helkimo Clinical Dysfunction Index, TMJ position test, cervical joint position error test and postural stability assessment were used. RESULTS The TMJ and cervical joint position sense, total sway degree, area gap percentage, sway velocity and antero-posterior body sway results showed significant improvement in the STEG compared to the CG (p< 0.05), however medio-lateral body sway did not differ between groups (p> 0.05). CONCLUSIONS Postural stability, TMJ and cervical joint position sense appear to be affected in individuals with CCM malalignment. Our results showed that an exercise program including ST stabilization, proprioception and strengthening of the scapular muscles may be effective in the management of CCM malalignment and will allow clinicians to plan holistic treatment.
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Affiliation(s)
- Mehmet Miçooğulları
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Cyprus International University, Lefkoşa, Turkey
| | - İnci Yüksel
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Eastern Mediterranean University, Famagusta, Lefkoşa, Turkey
| | - Salih Angın
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Cyprus International University, Lefkoşa, Turkey
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D'Attilio M, Bondi D, Castellani M, Verratti V, Pietrangelo T. Sports performance adaptations through occlusal splint: Case reports of triathlon athletes. Cranio 2023; 41:556-564. [PMID: 33554766 DOI: 10.1080/08869634.2021.1883386] [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] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Occlusal disturbances affect human posture and sports performance. This study aimed to monitor biomechanical adaptations to personalized occlusal splints. METHODS Splints were customized based on stabilometry, thermography, sEMG, and kinesiography, and administered to three triathlon athletes. They were evaluated during a 4-month period, using isokinetic indexes, running kinematics and anaerobic outputs. RESULTS Individuality emerged as a key factor driving type, quantity, quality, and time trajectories of adaptations. The use of instrumental and clinical tests allowed the detection of static balance and biting function improvements, but not necessarily parallel to sports performance improvements. CONCLUSION The authors argue that strength and kinematic imbalances are joint and task-specific and support the use of multi-stage monitoring of the biomechanical effect of mouthpieces. Kinematics of cycling and running may be widely assessed with ecological and inexpensive methods. Strength imbalances need to be continuously monitored due to the high informative value to injury prevention.
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Affiliation(s)
- Michele D'Attilio
- Department of Medical and Oral Sciences and Biotechnologies, University "G. d'Annunzio" of Chieti - Pescara, Chieti, Italy
| | - Danilo Bondi
- Department of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio" of Chieti - Pescara, Chieti, Italy
| | - Marco Castellani
- Department of Medical and Oral Sciences and Biotechnologies, University "G. d'Annunzio" of Chieti - Pescara, Chieti, Italy
| | - Vittore Verratti
- Department of Psychological, Health and Territorial Sciences, University "G. d'Annunzio" of Chieti - Pescara, Chieti, Italy
| | - Tiziana Pietrangelo
- Department of Neuroscience, Imaging and Clinical Sciences, University "G. d'Annunzio" of Chieti - Pescara, Chieti, Italy
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Zhang Y, Liu K, Shao Z, Lyu C, Zou D. The Effect of Asymmetrical Occlusion on Surface Electromyographic Activity in Subjects with a Chewing Side Preference: A Preliminary Study. Healthcare (Basel) 2023; 11:1718. [PMID: 37372836 DOI: 10.3390/healthcare11121718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
The relationship between asymmetrical occlusion and surface electromyographic activity (sEMG) in people with different chewing preferences is not clear. In this study, the 5 s sEMG changes in the masseter muscle (MM), sternocleidomastoid (SCM), lateral (LGA), and medial (MGA) gastrocnemius muscles were recorded in controls, and subjects with chewing side preference (CSP) during clench with bilateral (BCR), left (LCR), and right (RCR) posterior teeth placement of cotton rolls. The images of the middle 3 s were selected and expressed as the root mean square (unit: μV/s). The EMG waves of bilateral muscles were compared by computing the percentage overlapping coefficient (POC). Only the POCMM of the CSP showed gender differences at BCR and RCR. Between the control group and the CSP group, there were significant differences in the POCMM and the POCLGA at BCR. In addition, there was a significant difference in POCMM and POCSCM between the two populations in different occlusal positions. The change in the POCSCM correlated with the change in the POCMM (r = 0.415, p = 0.018). The experiment-induced asymmetrical occlusion showed that the altered symmetry of the MM correlated with the altered symmetry of the SCM. Long-term asymmetrical occlusion (i.e., CSP) not only affects MM but also has potential effects on other superficial muscles (e.g., LGA).
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Affiliation(s)
- Yubing Zhang
- Department of Stomatology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Kun Liu
- Department of Rehabilitation Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zhengwei Shao
- Department of Stomatology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Chengqi Lyu
- Department of Stomatology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Derong Zou
- Department of Stomatology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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El Ouali EM, Zouhal H, Bahije L, Ibrahimi A, Benamar B, Kartibou J, Saeidi A, Laher I, El Harane S, Granacher U, Mesfioui A. Effects of Malocclusion on Maximal Aerobic Capacity and Athletic Performance in Young Sub-Elite Athletes. Sports (Basel) 2023; 11:sports11030071. [PMID: 36976957 PMCID: PMC10051721 DOI: 10.3390/sports11030071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/01/2023] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
Oral pathologies can cause athletic underperformance. The aim of this study was to determine the effect of malocclusion on maximal aerobic capacity in young athletes with the same anthropometric data, diet, training mode, and intensity from the same athletics training center. Sub-elite track and field athletes (middle-distance runners) with malocclusion (experimental group (EG); n = 37; 21 girls; age: 15.1 ± 1.5 years) and without malocclusion (control group (CG); n = 13; 5 girls; age: 14.7 ± 1.9 years) volunteered to participate in this study. Participants received an oral diagnosis to examine malocclusion, which was defined as an overlapping of teeth that resulted in impaired contact between the teeth of the mandible and the teeth of the upper jaw. Maximal aerobic capacity was assessed using the VAMEVAL test (calculated MAS and estimated VO2max). The test consisted of baseline values that included the following parameters: maximum aerobic speed (MAS), maximal oxygen uptake (VO2max), heart rate frequency, systolic (SAP) and diastolic arterial pressure (DAP), blood lactate concentration (LBP), and post-exercise blood lactate assessment (LAP) after the performance of the VAMEVAL test. There were no statistically significant differences between the two study groups related to either anthropometric data (age: EG = 15.1 ± 1.5 vs. CC = 14.7 ± 1.9 years (p = 0.46); BMI: EG = 19.25 ± 1.9 vs. CC = 19.42 ± 1.7 kg/m2 (p = 0.76)) or for the following physical fitness parameters and biomarkers: MAS: EG = 15.5 (14.5-16.5) vs. CG = 15.5 (15-17) km/h (p = 0.47); VO2max: EG = 54.2 (52.5-58.6) vs. CG = 54.2 (53.4-59.5) mL/kg/min (p = 0.62) (IQR (Q1-Q3)); heart rate before the physical test: EG = 77.1 ± 9.9 vs. CG = 74.3 ± 14.0 bpm (p = 0.43); SAP: EG = 106.6 ± 13.4 vs. CG = 106.2 ± 14.8 mmHg (p = 0.91); DAP: EG = 66.7 ± 9.1 vs. CG = 63.9 ± 10.2 mmHg (p = 0.36); LBP: EG = 1.5 ± 0.4 vs. CG = 1.3 ± 0.4 mmol/L (p = 0.12); and LAP: EG = 4.5 ± 2.36 vs. CG = 4.06 ± 3.04 mmol/L (p = 0.60). Our study suggests that dental malocclusion does not impede maximal aerobic capacity and the athletic performance of young track and field athletes.
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Affiliation(s)
- El Mokhtar El Ouali
- Laboratory of Biology and Health, Department of Biology, Ibn Tofail University of Kenitra, Kénitra 14000, Morocco
| | - Hassane Zouhal
- Movement, Sport, Health and Sciences Laboratory (M2S), UFR-STAPS, University of Rennes 2-ENS Cachan, Av. Charles Tillon, 35044 Rennes, France
- Institut International des Sciences du Sport (2IS), 35850 Irodouer, France
| | - Loubna Bahije
- Department of Dentofacial Orthopedics, Faculty of Dental Medicine, Mohammed 5 University of Rabat, Rabat 10000, Morocco
| | - Azeddine Ibrahimi
- Medical Biotechnology Laboratory, Faculty of Medicine and Pharmacy, Mohamed 5 Rabat University, Rabat 10000, Morocco
| | - Bahae Benamar
- BENAMAR Medical Analysis Laboratory, Rabat 10000, Morocco
| | - Jihan Kartibou
- Ministry of National Education and Teaching and Sports, Rabat 10000, Morocco
| | - Ayoub Saeidi
- Department of Physical Education and Sport Sciences, Faculty of Humanities and Social Sciences, University of Kurdistan, Sanandaj 66177-15175, Iran
| | - Ismail Laher
- Department of Anesthesiology, Pharmacology, and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Sanae El Harane
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Urs Granacher
- Department of Sport and Sport Science, Exercise and Human Movement Science, University of Freiburg, 79102 Freiburg, Germany
| | - Abdelhalem Mesfioui
- Laboratory of Biology and Health, Department of Biology, Ibn Tofail University of Kenitra, Kénitra 14000, Morocco
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Yamada Y, Hirabayashi R, Okada Y, Yokota H, Sekine C, Edama M. Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance. Health Sci Rep 2023; 6:e1098. [PMID: 36778778 PMCID: PMC9898801 DOI: 10.1002/hsr2.1098] [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: 09/28/2022] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 02/05/2023] Open
Abstract
Background Remote facilitation refers to teeth occlusion-activated spinal cord activity resulting in increased trunk and limb muscle strength. Facilitation depends on dentition-related pressure during occlusion and masticatory muscle contraction strength. Aims This study aimed to clarify the neurophysiological phenomenon and mechanisms by which occlusal strength and balance affect leg muscle activity and smooth joint movement execution. Materials & Methods To examine occlusal strength, three conditions were set: no contact between teeth and Moderate- and Maximum-strength occlusion (No-bite, Moderate, and Max conditions, respectively). To assess occlusal balance, we measured occlusal forces and calculated the left-right force ratio. We designated the sides with higher and lower occlusal pressure as hypertonic and hypotonic, respectively. We assessed ankle dorsiflexion movements with joint movement and isometric tasks. Results The rate of joint development and peak ankle dorsiflexion torque were significantly higher under occlusion (moderate and max compared to No-bite conditions), and the joint movement performance time was significantly shorter under Moderate compared to No-bite conditions. The joint movement execution time change rate from No-bite to Moderate condition was significantly lower on the Hypertonic side. Joint movement function was most improved under Moderate conditions. Discussion While remote facilitation improves with higher occlusal strength, leading to increased muscle strength, there is optimal occlusion intensity in joint movement. Moreover, an occlusal balance-dependent imbalance exists in remote facilitation between the Hyper- and Hypotonic sides. Conclusion Thus, low-intensity occlusion is optimal for smooth joint movement, and unbalanced occlusion results in asymmetrical motor function facilitation.
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Affiliation(s)
- Yuki Yamada
- Institute for Human Movement and Medical SciencesNiigata University of Health and WelfareNiigataJapan
| | - Ryo Hirabayashi
- Institute for Human Movement and Medical SciencesNiigata University of Health and WelfareNiigataJapan
| | - Yoshiyuki Okada
- Department of Special Care DentistryHiroshima UniversityHiroshimaJapan
| | - Hirotake Yokota
- Institute for Human Movement and Medical SciencesNiigata University of Health and WelfareNiigataJapan
| | - Chie Sekine
- Institute for Human Movement and Medical SciencesNiigata University of Health and WelfareNiigataJapan
| | - Mutsuaki Edama
- Institute for Human Movement and Medical SciencesNiigata University of Health and WelfareNiigataJapan
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Nowak M, Golec J, Wieczorek A, Golec P. Is There a Correlation between Dental Occlusion, Postural Stability and Selected Gait Parameters in Adults? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1652. [PMID: 36674407 PMCID: PMC9862361 DOI: 10.3390/ijerph20021652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Background: There is still an ongoing debate about the role of the craniomandibular system, including occlusal conditions, on postural stability. This study aims to assess the role of antero-posterior malocclusion on postural control and plantar pressure distribution during standing and walking. Methods: 90 healthy volunteers (aged 19 to 35) were qualified for the study. The subjects were assigned to three groups, depending on the occlusion type. Each group (Angle Class I, II and III) consisted of 30 people. The research procedure included a clinical occlusal assessment performed by a dentist. Postural control measurements were carried out using a force platform by measuring plantar pressure distribution during standing (six trials with and without visual control) and walking test conditions. Results: The tendency to shift the CoP forward is demonstrated by Angle Class II subjects and backwards by Class I and III subjects (p < 0.001). Individuals with a malocclusion demonstrated significantly higher selected stabilographic parameters while standing on both feet (with eyes open and closed) and during the single-leg test with eyes open (p < 0.05). The analysis of the dynamic test results showed no significant correlations between Angle Classes and the selected gait parameters. Conclusions: Analyses conducted among individuals with malocclusions showed the impact of occlusion on static postural stability. In order to diagnose and effectively treat malocclusion, a multidisciplinary approach with the participation of dentists and physiotherapy specialists is necessary, with the use of stabilometric and kinematic posture assessments.
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Affiliation(s)
- Monika Nowak
- Faculty of Medicine and Health Sciences, Andrzej Frycz Modrzewski Krakow University, 30-705 Kraków, Poland
| | - Joanna Golec
- Institute of Clinical Rehabilitation, University School of Physical Education in Krakow, 31-571 Kraków, Poland
| | - Aneta Wieczorek
- Department of Prosthodontics and Orthodontics, Faculty of Medicine, Jagiellonian University Medical College, 31-007 Kraków, Poland
| | - Piotr Golec
- Individual Medical Practice, 30-390 Kraków, Poland
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Muacevic A, Adler JR, Raina R, . A, Kumari M, . A. Electromyographic Analysis of Masticatory and Accessory Muscles in Subjects With Implant-Supported Fixed Prostheses: A Three-Arm Comparative Clinical Study. Cureus 2023; 15:e33969. [PMID: 36812127 PMCID: PMC9938720 DOI: 10.7759/cureus.33969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 01/19/2023] [Indexed: 01/20/2023] Open
Abstract
Aim This study compares the electromyographic (EMG) activity of the masticatory and accessory muscles in patients with natural teeth and those wearing full-mouth fixed prostheses supported by implants. Method In this study, 30 subjects of 30-69 years performed static and dynamic EMG measurements of masticatory and accessory muscles (masseter, anterior temporalis, SCM, and anterior digastric) and were divided into three groups: Group 1 (G1, Control, Dentate), comprising 10 subjects with 14 or more natural teeth (30-51 years of age); Group 2 (G2, single arch implant-supported fixed prosthesis) composed of 10 patients with unilateral edentulism who were successfully rehabilitated with implant-supported fixed prostheses in the maxilla or mandible, restoring occlusion to 12-14 teeth per arch; (39-61 years of age); and Group 3 (G3, full mouth implant-supported fixed prosthesis) with 10 subjects with completely edentulous arches with full mouth implant-supported fixed prosthesis with 12 occluding pairs of teeth (46-69 years of age). The left and right masseter, anterior temporalis, superior sagittal, and anterior digastric muscles were examined at rest, as well as maximum voluntary clenching (MVC), swallowing, and unilateral chewing. On muscle bellies, disposable, pre-gelled silver/silver chloride bipolar surface electrodes were parallel to muscle fibers. BIO-PAKeight® channels recorded electrical muscle activity (Bio-EMG III, BioResearch Associates, Inc. Brown Deer, WI). Results Full mouth embed upheld fixed prostheses patients had higher resting EMG activity than dentate and single curve implants. Full mouth embeds supported fixed prostheses and dentate patients had significantly different temporalis and digastric muscle mean EMG activity. Dentate people used their temporalis and masseter muscles more during the MVC than those with single-curve embedded upheld fixed prostheses limiting natural teeth or full-mouth implants. No event had the crucial item. Neck muscle differences were insignificant. All groups had higher SCM and digastric EMG activity during MVC than at rest. The single curve embed upheld fixed prosthesis group's temporalis and masseter muscles were significantly more active during gulping than the dentate and entire mouth groups. Single curve and entire mouth gulping SCM muscle EMG activity were similar. Digastric muscular EMG activity differed significantly between those with full-arch or partial-arch fixed prostheses and dentures. When instructed to bite one side, the masseter and temporalis front muscle mean EMG activity increased on the unrestricted side. Unilateral biting and temporalis muscle activation were comparable between groups. For the masseter muscle, the mean EMG was also higher on the functioning side, with no truly large differences between the three groups except for right-side biting when comparing the dentate and full mouth embed upheld fixed prosthesis groups and the single curve and full mouth groups. Conclusion The temporalis muscle activity difference was statistically significant in the full mouth implant-supported fixed prosthesis group. The three groups' static (clenching) sEMG analysis showed non-significant temporalis and masseter muscle activity increases. Full mouth swallowing increased digastric muscle activity. All three groups had similar unilateral chewing muscle activity except for the working side masseter muscle.
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Pastukhova VA, Zinchenko SV. MODERN PRINCIPLES OF THE NEUROMUSCULAR DENTISTRY AND THEIR PRACTICAL APPLIANCE IN SPORT. BULLETIN OF PROBLEMS BIOLOGY AND MEDICINE 2022. [DOI: 10.29254/2077-4214-2022-3-166-69-79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - S. V. Zinchenko
- National University of Ukraine on Physical Education and Sport
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10
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Cesanelli L, Cesaretti G, Ylaitė B, Iovane A, Bianco A, Messina G. Occlusal Splints and Exercise Performance: A Systematic Review of Current Evidence. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph181910338. [PMID: 34639640 PMCID: PMC8507675 DOI: 10.3390/ijerph181910338] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 12/27/2022]
Abstract
The role of the dento-mandibular apparatus and, in particular, occlusion and jaw position, received increased attention during last years. In the present study, we aimed to systematically review, on the light of the new potential insights, the published literature covering the occlusal splint (OS) applications, and its impact on exercise performance. A structured search was carried out including MEDLINE®/PubMed and Scopus databases with additional integration from external sources, between March and June 2021. To meet the inclusion criteria, studies published in the English language, involving humans in vivo, published from 2000 to 2021 and that investigated the role of occlusal splints on athletes' performance were selected. Starting from the 587 identified records, 17 items were finally included for the review. Four main aspects were considered and analyzed: (1) occlusal splint characteristics and occlusion experimental conditions, (2) jump performance, (3) maximal and explosive strength, and (4) exercise technique and biomechanics. The results of the systematic literature analysis depicted a wide heterogenicity in the experimental conditions and suggested the application of the OS as a way to improve athletes' or individuals' oral health, and as a potential tool to optimize marginal aspects of exercise performance.
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Affiliation(s)
- Leonardo Cesanelli
- Sport and Exercise Sciences Research Unit, Department of Psychological, Pedagogical and Educational Sciences, University of Palermo, 90128 Palermo, Italy; (L.C.); (A.I.); (A.B.)
| | - Gianfranco Cesaretti
- Ariminum Research & Dental Education Center, ARDEC Academy, 47923 Rimini, Italy;
| | - Berta Ylaitė
- Faculty of Sport Biomedicine, Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania;
| | - Angelo Iovane
- Sport and Exercise Sciences Research Unit, Department of Psychological, Pedagogical and Educational Sciences, University of Palermo, 90128 Palermo, Italy; (L.C.); (A.I.); (A.B.)
| | - Antonino Bianco
- Sport and Exercise Sciences Research Unit, Department of Psychological, Pedagogical and Educational Sciences, University of Palermo, 90128 Palermo, Italy; (L.C.); (A.I.); (A.B.)
| | - Giuseppe Messina
- Sport and Exercise Sciences Research Unit, Department of Psychological, Pedagogical and Educational Sciences, University of Palermo, 90128 Palermo, Italy; (L.C.); (A.I.); (A.B.)
- Correspondence:
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Roggio F, Ravalli S, Maugeri G, Bianco A, Palma A, Di Rosa M, Musumeci G. Technological advancements in the analysis of human motion and posture management through digital devices. World J Orthop 2021; 12:467-484. [PMID: 34354935 PMCID: PMC8316840 DOI: 10.5312/wjo.v12.i7.467] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/15/2021] [Accepted: 07/12/2021] [Indexed: 02/06/2023] Open
Abstract
Technological development of motion and posture analyses is rapidly progressing, especially in rehabilitation settings and sport biomechanics. Consequently, clear discrimination among different measurement systems is required to diversify their use as needed. This review aims to resume the currently used motion and posture analysis systems, clarify and suggest the appropriate approaches suitable for specific cases or contexts. The currently gold standard systems of motion analysis, widely used in clinical settings, present several limitations related to marker placement or long procedure time. Fully automated and markerless systems are overcoming these drawbacks for conducting biomechanical studies, especially outside laboratories. Similarly, new posture analysis techniques are emerging, often driven by the need for fast and non-invasive methods to obtain high-precision results. These new technologies have also become effective for children or adolescents with non-specific back pain and postural insufficiencies. The evolutions of these methods aim to standardize measurements and provide manageable tools in clinical practice for the early diagnosis of musculoskeletal pathologies and to monitor daily improvements of each patient. Herein, these devices and their uses are described, providing researchers, clinicians, orthopedics, physical therapists, and sports coaches an effective guide to use new technologies in their practice as instruments of diagnosis, therapy, and prevention.
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Affiliation(s)
- Federico Roggio
- Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo 90144, Italy
| | - Silvia Ravalli
- Department of Biomedical and Biotechnological Sciences, Human Anatomy and Histology Section, School of Medicine, University of Catania, Catania 95123, Italy
| | - Grazia Maugeri
- Department of Biomedical and Biotechnological Sciences, Human Anatomy and Histology Section, School of Medicine, University of Catania, Catania 95123, Italy
| | - Antonino Bianco
- Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo 90144, Italy
| | - Antonio Palma
- Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo 90144, Italy
| | - Michelino Di Rosa
- Department of Biomedical and Biotechnological Sciences, Human Anatomy and Histology Section, School of Medicine, University of Catania, Catania 95123, Italy
| | - Giuseppe Musumeci
- Department of Biomedical and Biotechnological Sciences, Human Anatomy and Histology Section, School of Medicine, University of Catania, Catania 95123, Italy
- Research Center on Motor Activities, University of Catania, Catania 95123, Italy
- Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA 19122, United States
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12
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Parrini S, Rossini G, Nebiolo B, Airale M, Franceschi A, Cugliari G, Deregibus A, Castroflorio T. Variations in athletic performance with occlusal splint in track and field athletes: a randomized clinical trial. J Sports Med Phys Fitness 2021; 62:375-381. [PMID: 33871235 DOI: 10.23736/s0022-4707.21.12081-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Several studies have been proposed with the aim to demonstrate correlations between the dento-mandibular apparatus and the skeletal muscle system of the human body even in regions distant from the oral cavity. However, a definite conclusion cannot be drawn. The aim of this paper is to demonstrate a possible correlation between dental occlusion and sport performances in track and field athletes. METHODS 16 track and field athletes were enrolled for the study and were randomly divided in three groups: Untreated control group, Placebo group (with a lower plaque without occlusal coverage) and Treated group (with occlusal splint). Changes in sprint and jump performance were assessed on a weekly basis for 5 consecutive weeks, during which athletes had to wear oral devices, except for the first week of baseline, for at least 3 trainings lasting 2 hours per week. All participants performed the countermovement jump (CMJ), the drop jump (DJ), the 10m and 30m sprint tests, always on the same day on the week. RESULTS No statistically significant difference resulted between Control group and Placebo group and between Control group and Treated group. However it was possible to observe a clinical improvement of measurements obtained, especially for CMJ, 10m and 30m sprint tests. No variation neither statistical neither clinical was observed in DJ test analysis. CONCLUSIONS Even if statistically it was not possible to demonstrate an improvement in sport performance, most of the athlete analyzed showed better results during training session with occlusal splint compared to athlete without occlusal splint, in countermovement jump, in 10m and 30m sprint tests.
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Affiliation(s)
- Simone Parrini
- Department of Surgical Sciences, CIR Dental School, University of Turin, Turin, Italy -
| | - Gabriele Rossini
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, University of Turin, Turin, Italy
| | - Bianca Nebiolo
- Department of Surgical Sciences, CIR Dental School, University of Turin, Turin, Italy
| | - Marco Airale
- Eracle Academy, Metropolitan City of Turin, Turin, Italy
| | - Alberto Franceschi
- Eracle Academy, Metropolitan City of Turin, Turin, Italy.,Research Center in Sports Sciences, Health and Human Development, CIDESD, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
| | | | - Andrea Deregibus
- Department of Surgical Sciences, CIR Dental School, University of Turin, Turin, Italy
| | - Tommaso Castroflorio
- Department of Surgical Sciences, CIR Dental School, University of Turin, Turin, Italy
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13
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Laube W, Pfaff G. Zur therapeutischen Modifikation der Schnittstelle sensomotorisches System – Umwelt durch Schuheinlagen. MANUELLE MEDIZIN 2020. [DOI: 10.1007/s00337-020-00736-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Evaluation of Masticatory Muscle Function Using Digital versus Traditional Techniques for Mockup Fabrication: A Controlled Prospective Study. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10176013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: the aim of this longitudinal prospective study was to analyze the effect of digital and traditional mockup on masticatory muscle activity in patients with teeth wear, rehabilitated with an increase of occlusal vertical dimension. Subjects and Methods: a sample of 22 adult patients who were about to receive a prosthetic rehabilitation was divided into a study group (3M; 9F; mean age 42 ± 0.8 years), treated using the digital mockup; and a control group (2M; 8F; mean age 37 ± 0.5 years), treated using the conventional technique (traditional) mockup. Electromyographic activity of anterior temporalis and masseter muscles were evaluated before the beginning of the treatment (T0), at mockup insertion (T1), after treatment (T2) and each lapse of time lasted 2–5 months. Results: the comparison between the two groups at different time gaps revealed that at ∆1 (T1–T0) only the impact index (IMP) showed significant difference and no other significant variation was observed between the two groups at ∆2 (T2–T1) and ∆3 (T2–T0). It concludes that traditional and digital methods generally have nonsignificant differences. Conclusions: both methods seem to be effective in prosthetic rehabilitation and give comparable effects on masticatory muscles.
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15
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Thanathornwong B, Jalayondeja W. Vibrotactile -Feedback Device for Postural Balance Among Malocclusion Patients. IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE-JTEHM 2020; 8:2100406. [PMID: 32411542 PMCID: PMC7217290 DOI: 10.1109/jtehm.2020.2990527] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/28/2020] [Accepted: 04/22/2020] [Indexed: 11/26/2022]
Abstract
Multiple studies have suggested that some associations exist between occlusal factors and postural alterations. Objectives: This study aimed to evaluate the effectiveness of a vibrotactile posture trainer device, comprised a wearable device containing an accelerometer sensor to measure the angle of the neck flexion (input) and provided real-time vibrotactile biofeedback (output) for postural balance among patients with malocclusion. Methods: Twenty-four subjects were divided in 3 groups based on occlusion and using Angle’s classification. Each group consisted of 8 patients for class I, II and III malocclusion. The Posture Trainer System was used for feedback concerning neck flexion angles when higher than 15 degrees. A 4-week training program to adjust posture balance in 2 axes (flexion-extension, lateral-flexion) was applied in activities for daily living. The assessments in this study were comprised of neck flexion angles from the Posture Trainer System and the center of pressure (\documentclass[12pt]{minimal}
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}{}$\text{N}\cdot \text{m}$
\end{document}) using a force plate. The effects of a vibrotactile posture trainer (baseline vs. post-training test) were evaluated using the paired t-test and were assumed to be significant at p < 0.05 (two-side). All analyses were conducted using the Statistical Package for Social Sciences, Version 21.0 (SPSS, Chicago, IL, USA). Results: Neck flexion angles and center of pressure significantly decreased post-training by the Posture Trainer System among patients with class II malocclusion. No changes in the above parameters post-training were found in class I and class III. Conclusion: The results demonstrated that patients with class II malocclusion training by the Posture Trainer System lowered neck flexion angles and COP compared with pre-training. Clinical Impact: Feedback by the Posture Trainer System can help improve the postural balance in class II malocclusion.
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16
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Militi A, Cicciù M, Sambataro S, Bocchieri S, Cervino G, De Stefano R, Fiorillo L. Dental occlusion and sport performance. ACTA ACUST UNITED AC 2020; 69:112-118. [PMID: 32181617 DOI: 10.23736/s0026-4970.20.04350-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION In recent years, interest has been given to the relationship between dental occlusion and athletes' performance. A correct occlusion allows for a correct position of the mandible in space and could be reached by wearing a splint made by a dentist. Achieving this condition appears to be an advantage for all athletes, and especially for those who have TMJ dysfunction. The purpose of the study was to investigate the hypothesis and common belief that correcting the occlusion or the use of a splint could improve an athlete's performance. EVIDENCE ACQUISITION A search on electronic database has been performed and obtained 141 results; then, following the application of the inclusion criteria, only 11 articles were selected. EVIDENCE SYNTHESIS A good occlusion seems to be an advantage for the athletes. CONCLUSIONS The use of an occlusal splint should be evaluated in different sports, because the occlusion and TMJ conditions of the athletes are different and the efforts in which they are subjected could not be generalized because the sports have various rules and characteristics that involves the stomatognathic system differently.
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Affiliation(s)
- Angela Militi
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, Messina, Italy
| | - Marco Cicciù
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, Messina, Italy
| | - Sergio Sambataro
- Section of Orthodontics, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Salvatore Bocchieri
- Section of Orthodontics, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Gabriele Cervino
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, Messina, Italy
| | - Rosa De Stefano
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, Messina, Italy
| | - Luca Fiorillo
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging, University of Messina, Messina, Italy -
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17
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Zafar H, Alghadir AH, Iqbal ZA, Iqbal A, Anwer S, Alnahdi AH. Influence of different jaw positions on dynamic balance using Y-balance test. Brain Behav 2020; 10:e01507. [PMID: 31859447 PMCID: PMC6955923 DOI: 10.1002/brb3.1507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 11/29/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Jaw sensory-motor system has been shown to affect static balance of the body. It would be interesting to know whether it can influence dynamic balance as well. The objective of this study is to examine the influence of different jaw positions on dynamic balance using the Y-balance test. METHODS Eighty healthy male participants aged 20-35 years were invited to participate in this study. Dynamic balance was measured by the Y-balance test in three directions (anterior, posteromedial, and posterolateral) for each leg separately in three jaw positions: resting jaw (control), open-jaw, and clenched jaw. RESULTS There were no significant differences in reach distances between the different jaw positions except in the posterolateral direction. In comparison with resting jaw position, reach distance was significantly higher in open-jaw position for the right leg and in clenched and open-jaw positions for the left leg in the posterolateral direction. CONCLUSIONS Although various studies have shown direct or indirect influence of jaw sensory-motor system on static postural control, results of this study point to limited relation with dynamic postural control among healthy subjects. However, it supports the potential of the jaw sensory-motor system to affect motor control during functional tasks in patients with postural instability or similar disorders.
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Affiliation(s)
- Hamayun Zafar
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.,Department of Odontology, Clinical Oral Physiology, Faculty of Medicine, Umea University, Umea, Sweden
| | - Ahmad H Alghadir
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Zaheen Ahmed Iqbal
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Amir Iqbal
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Shahnawaz Anwer
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.,Department of Building and Real-Estate, Hong Kong Polytechnic University, Kowloon, Hong Kong SAR
| | - Ali H Alnahdi
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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18
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Kim D, Ko SG, Lee EK, Jung B. The relationship between spinal pain and temporomandibular joint disorders in Korea: a nationwide propensity score-matched study. BMC Musculoskelet Disord 2019; 20:631. [PMID: 31884949 PMCID: PMC6935481 DOI: 10.1186/s12891-019-3003-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 12/12/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Patients with temporomandibular joint disorder (TMD) often complain of pain in other areas. Several studies have been conducted on spinal pain in TMD patients, but have contained only limited information. Therefore, this study analyzed the relationship between TMD and spinal pain in greater detail by using nationwide data. METHODS A total of 12,375 TMD patients from the Korean National Health Insurance Review and Assessment database were analyzed. Controls were selected using propensity score-matching. The McNemar test, chi-square test, and paired t-test were used to compare the prevalence and severity of spinal pain between cases and matched controls. Logistic regression and linear regression models were used to analyze factors affecting the prevalence and severity of spinal pain in patients with TMD. RESULTS The annual period prevalence of TMD was 1.1%. The prevalence was higher in younger individuals than in individuals of other ages and was higher in women than in men. The medical expenditure for TMD per person was $86. Among TMD patients, 2.5% underwent surgical procedures and 0.3% were hospitalized. The prevalence of spinal pain in patients with TMD was 48%, whereas that in the control group was 34%. Increased severity of TMD was associated with an increased probability of spinal pain. The medical expenditure, mean number of visits, and lengths of treatment for spinal pain were greater for patients with TMD than for controls ($136 vs. $81, 4.8 days vs. 2.7 days, 5.5 days vs. 3.3 days). Higher TMD grade was associated with greater differences in average medical expenditure, number of visits, and lengths of treatment for spinal pain between cases and controls. Additionally, for women, living in a rural area and having an older age and more severe TMD were associated with a greater probability of spinal pain and higher medical expenditure related to spinal pain. CONCLUSION A strong association was observed between the presence of TMD and the presence of spinal pain. The association became stronger as the severity of TMD increased, indicating a positive correlation between the severity of TMD and spinal pain.
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Affiliation(s)
- Doori Kim
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, 3F, 538 Gangnam-daero, Gangnam-gu, Seoul, 06110, Republic of Korea
| | - Seong-Gyu Ko
- Department of Preventive Medicine, College of Korean Medicine, Graduate School, Khyung Hee University, Hoegi-dong, Dongdaemun-gu, Seoul, 02453, Republic of Korea
| | - Eun-Kyoung Lee
- Department of Preventive Medicine, College of Korean Medicine, Graduate School, Khyung Hee University, Hoegi-dong, Dongdaemun-gu, Seoul, 02453, Republic of Korea. .,Research Department, Research Institute of Korean Medicine Policy, 91, Heojun-ro, Gangseo-gu, Seoul, 07525, Republic of Korea.
| | - Boyoung Jung
- Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, 3F, 538 Gangnam-daero, Gangnam-gu, Seoul, 06110, Republic of Korea.
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Association between constitution, medical history, axiography and postural control in women aged between 21 to 30 years. Sci Rep 2019; 9:20051. [PMID: 31882913 PMCID: PMC6934647 DOI: 10.1038/s41598-019-56681-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 12/11/2019] [Indexed: 11/26/2022] Open
Abstract
The aim of this study was to determine association between constitutional, medical history and axiographic parameters with postural control parameters. Overall, 106 healthy female subjects aged between 21 and 30 years were measured. Data collection was carried out by completing a questionnaire on constitutional parameters, illnesses, accidents and medical/orthodontic therapies, as well as by axio- and posturographic measurements. Data were analyzed using correlations, pair comparisons and group comparisons. The significance level was set at p ≤ 0.05. The statistical evaluation showed significant correlations between sporting exercise and body sway in the sagittal direction (p ≤ 0.03), the BMI and the load on the forefoot/rear foot (p ≤ 0.01), the mouth opening and the load on the forefoot/rearfoot (p ≤ 0.01) and the presence of a deviation with the load on the left/right foot (p ≤ 0.01). The physical condition as well as the temporo-mandibular system are associated with the postural control in young women. Therefore, a holistic diagnosis and therapy will be supported by the present outcomes.
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20
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The Effect of Clenching and Occlusal Instability on Body Weight Distribution, Assessed by a Postural Platform. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7342541. [PMID: 31341904 PMCID: PMC6612379 DOI: 10.1155/2019/7342541] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 04/30/2019] [Accepted: 05/27/2019] [Indexed: 12/01/2022]
Abstract
The purpose of this research project was to investigate whether or not clenching and occlusal instability of Angle's Class I malocclusion have an effect on body weight distribution in healthy adult subjects. Twenty adults (fourteen males and six females, ages 27-40, mean age 31.7 years, SD 3.32) were included in this study. The MatScan (Tekscan Inc., Boston, MA) system was used to measure the body weight distribution changes of the subjects. Four body weight distribution measurements were taken for each subject while (1) the mandible was in the rest position (no tooth contact) (RES), (2) subject was clenching (maximum intercuspation of the teeth with heavy occlusal forces) (CL), (3) subject was clenching on the right side (with 1 mm disocclusion on the left side) (CLR), and (4) subject was clenching on the left side (with 1 mm disocclusion on the right side) (CLL). The lateral and the anteroposterior body weight distribution changes during the different clenching conditions (both sides, right, and left) were compared to those at which the mandible was at the rest position. The statistical significance of these results was tested with a Chi-Squared test (p<0.05). Based on the findings of the present study it was concluded that clenching and occlusal instability are associated with lateral body weight distribution changes.
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21
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Zafar H, Alghadir AH, Iqbal ZA. Effect of jaw functional status on neck muscle endurance. Arch Oral Biol 2019; 101:30-33. [PMID: 30875591 DOI: 10.1016/j.archoralbio.2019.03.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 02/19/2019] [Accepted: 03/01/2019] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To investigate the effect of resting jaw and maximum voluntary clenching on neck flexor and extensor muscle endurance. DESIGN Neck flexor and extensor endurance was measured in a college health clinic in 85 male college students in two test positions: resting jaw (control) and maximum voluntary clenching. RESULTS Mean neck flexor muscle endurance values during resting jaw and maximum voluntary clenching were 70.06 SD 28.24, and 60.03 SD 16.5, seconds respectively. Mean neck extensor muscle endurance values during resting jaw and maximum voluntary clenching were 105.54 SD 29.9, and 98.32 SD 24.54, respectively. Both values were significantly lower while maximum voluntary clenching as compared to resting jaw position (p < 0.05). CONCLUSION Modification of jaw position can affect neck muscle endurance. Results of this study further supports sensory-motor relation between jaw and neck region.
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Affiliation(s)
- Hamayun Zafar
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; Department of Odontology, Clinical Oral Physiology, Faculty of Medicine, Umea University, Umea, Sweden
| | - Ahmad H Alghadir
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Zaheen A Iqbal
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
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22
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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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Leroux E, Leroux S, Maton F, Ravalec X, Sorel O. Influence of dental occlusion on the athletic performance of young elite rowers: a pilot study. Clinics (Sao Paulo) 2018; 73:e453. [PMID: 30517283 PMCID: PMC6238821 DOI: 10.6061/clinics/2017/e453] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 07/04/2018] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES The present study aimed to assess the influence of dental occlusion on body posture and the competitive performance of young elite rowers. METHOD Dental occlusion disturbance devices were used to simulate dental malocclusions. We assessed the influence of malocclusion on the body balance, paravertebral muscle contraction symmetry, and muscular power of young elite rowers. A nonparametric permutation test for repeated measures ANOVA, a Cochran's Q test for paired data and a paired Student's t-test were used in order to statistically evaluate the influence of artificial occlusal disturbance on each factor. A force platform and a Dyno Concept 2 machine were used as measuring instruments. RESULTS A total of 7 members of the "Pôle France Aviron" (age range of 15-17 years) were enrolled in the study. None of the body balance parameters was significantly influenced by the artificial occlusal disturbance. The interposition of an occlusal silicone splint significantly increased the proportion of athletes presenting asymmetric muscular contractions from 14.3% to 85.7% (p=0.025) and induced a significant 17.7% decrease in the athletes' muscular power (p=0.030). CONCLUSIONS This study shows the negative impacts of an occlusal disturbance on the athletic performance of young elite rowers. The detection of malocclusion traits by regular occlusal monitoring would be of great interest in this population.
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Affiliation(s)
- Eric Leroux
- Service d'Odontologie et Chirurgie Buccale, CHU de Rennes, Rennes, France
- Université de Rennes 1, Rennes, France
- *Corresponding author. E-mail:
| | - Stéphanie Leroux
- Université de Rennes 1, Rennes, France
- Service de Pédiatrie, CHU de Rennes, Rennes, France
| | - Frédéric Maton
- Fédération Française d'Aviron, Unité médicale du CREPS de Lille, Wattignies, France
| | - Xavier Ravalec
- Service d'Odontologie et Chirurgie Buccale, CHU de Rennes, Rennes, France
- Université de Rennes 1, Rennes, France
| | - Olivier Sorel
- Service d'Odontologie et Chirurgie Buccale, CHU de Rennes, Rennes, France
- Université de Rennes 1, Rennes, France
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Effects of Dental Occlusion on Body Sway, Upper Body Muscle Activity and Shooting Performance in Pistol Shooters. Appl Bionics Biomech 2018; 2018:9360103. [PMID: 30140310 PMCID: PMC6081538 DOI: 10.1155/2018/9360103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/17/2018] [Accepted: 06/04/2018] [Indexed: 12/01/2022] Open
Abstract
Occlusal splints, to some extent, have been related to reduced body sway in a static position and increased muscle activity in the upper limbs. However, how dental occlusion status affects sports performance remains unclear. Here, we investigated whether occlusal splints that reposition the temporomandibular joint (TMJ) influenced body posture, muscle activity, and performance in 10-meter pistol shooters. Thirteen national-level male shooters (age = 38.8 ± 10.9 yrs) were recruited for this study, and cleared of any cervical pathology. An occlusal splint (OS) and a placebo splint (PS) were fabricated for each of the subjects, with the mandibular and maxillary position verified by an expert dentist, with the aid of an adjustable articulator. Surface electromyography (EMG) was assessed in the upper limb that holds the pistol while the subjects were standing on a force platform. Subjects performed two series of 10 shots for each of the three experimental conditions (OS, PS, N (no splint)) in randomized order, with the mandible in a rest position. Results revealed similar centre of pressure (COP) parameters in all conditions, despite a reduction in the average oscillation area caused by the OS. There were also no significant differences in EMG activity between conditions in the five upper limb muscles monitored. Consistent with this, shooting performance was similar in all conditions, despite a reduction in shot dispersion in subjects using OS. Thus, changes in dental occlusion status induced by OS do not affect body posture, upper limb EMG muscle activity, or shot performance in healthy male pistol shooters.
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Nota A, Tecco S, Ehsani S, Padulo J, Baldini A. Postural stability in subjects with temporomandibular disorders and healthy controls: A comparative assessment. J Electromyogr Kinesiol 2017; 37:21-24. [PMID: 28865312 DOI: 10.1016/j.jelekin.2017.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 08/11/2017] [Accepted: 08/21/2017] [Indexed: 10/19/2022] Open
Abstract
PURPOSE OF THE STUDY The influence of the stomatognathic apparatus on body posture is a continuously discussed topic with contrasting results. The aim of this study is to analyze differences in postural stability between subjects with and without myogenous TMD. METHODS 25 subjects affected by myogenous TMD according with DC/TMD (6 males, 19 females; mean age 31.75±6.68years) and a healthy control group of 19 subjects (4 Males, 15 Females; mean age 27.26±3.85years) were enrolled in the study. Both groups underwent a posturo-stabilometric force platform exam under different mandibular and visual conditions. Sway area and sway velocity of the COP (Center Of foot Pressure) posturo-stabilometric parameters were evaluated and compared applying Mann-U-Whitney statistical test. RESULTS The sway area and sway velocity parameters resulted statistically significantly higher in the TMD group (sway area p<0.01; sway velocity p<0.05) in mandibular maximum intercuspation and rest positions with eyes open. CONCLUSIONS This study demonstrates a significant difference in body postural stability between subjects with myogenous TMD and healthy controls. In particular, sway area and sway velocity postural parameters are increased in these subjects.
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Affiliation(s)
- Alessandro Nota
- Dental School, Vita-Salute San Raffaele University, Milan, Italy; Faculty of Kinesiology, University of Split, Croatia.
| | - Simona Tecco
- Dental School, Vita-Salute San Raffaele University, Milan, Italy
| | - Shideh Ehsani
- Dental School, Vita-Salute San Raffaele University, Milan, Italy
| | - Johnny Padulo
- Faculty of Kinesiology, University of Split, Croatia; University eCampus, Novedrate, Italy
| | - Alberto Baldini
- Dental School, Vita-Salute San Raffaele University, Milan, Italy; Faculty of Kinesiology, University of Split, Croatia
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The Effect of Teeth Clenching on Dynamic Balance at Jump-Landing: A Pilot Study. J Appl Biomech 2017; 33:211-215. [DOI: 10.1123/jab.2016-0137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The aim of this study was to analyze the effect of teeth clenching on dynamic balance at jump landing. Twenty-five healthy subjects performed jump-landing tasks with or without teeth clenching. The first 3 trials were performed with no instruction; subsequently, subjects were ordered to clench at the time of landing in the following 3 trials. We collected the data of masseter muscle activity by electromyogram, the maximum vertical ground reaction force (vGRFmax) and center of pressure (CoP) parameters by force plate during jump-landing. According to the clenching status of control jump-landing, all participants were categorized into a spontaneous clenching group and no clenching group, and the CoP data were compared. The masseter muscle activity was correlated with vGRFmax during anterior jump-landing, while it was not correlated with CoP. In comparisons between the spontaneous clenching and the no clenching group during anterior jump-landing, the spontaneous clenching group showed harder landing and the CoP area became larger than the no clenching group. There were no significant differences between pre- and postintervention in both spontaneous clenching and no clenching groups. The effect of teeth clenching on dynamic balance during jump-landing was limited.
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März K, Adler W, Matta RE, Wolf L, Wichmann M, Bergauer B. Can different occlusal positions instantaneously impact spine and body posture? : A pilot study using rasterstereography for a three-dimensional evaluation. J Orofac Orthop 2016; 78:221-232. [PMID: 27921118 DOI: 10.1007/s00056-016-0073-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 10/19/2016] [Indexed: 12/26/2022]
Abstract
PURPOSE Orthodontists influence dental occlusion directly. To suggest any link between dental occlusion and body posture is highly contentious, as evidenced by the literature. Rasterstereography, an optical technique that enables three-dimensional (3D) body measurements to be collected, has not yet been used to impartially examine whether different occlusal positions could instantaneously alter spine and body posture. We therefore set out to use this technique to nonsubjectively evaluate this question under static conditions. METHODS Optical body scans were collected for 44 subjects, using the Diers formetric 4D system, for seven different mandible positions. In total, ten spinal and body posture parameters were assessed (trunk inclination, trunk imbalance, pelvic tilt, pelvic torsion, fleche cervicale, fleche lombaire, kyphotic angle, lordotic angle, surface rotation, and lateral deviation) for each mandible position and compared with scans performed with habitual intercuspation (HIC). RESULTS Significant body posture deviations were found for the fleche cervicale (position of the mandible: right eccentrically), fleche lombaire (positions of the mandible: physiologic rest position, cotton rolls on both sides, bite elevation 1 mm), and the kyphotic angle (positions of the mandible: cotton rolls on both sides, right eccentrically). No other significant differences were detected. CONCLUSIONS Data for the parameters that varied with different dental occlusions generated high standard deviations. Therefore, within the limitations of this pilot study, we could not conclusively associate dental occlusion to an instantaneous impact on the tested parameters. The posture changes that we detected could also have arisen from individual neuromuscular compensation; a possibility that must now be ruled-in, or out, by further research studies with a higher number of subjects.
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Affiliation(s)
- Karoline März
- Department of Prosthodontics, Erlangen University Hospital, Glückstrasse 11, 91054, Erlangen, Germany
| | - Werner Adler
- Department of Medical Informatics, Biometry and Epidemiology, Friedrich-Alexander-University of Erlangen-Nuremberg, Universitätsstraße 22, 91054, Erlangen, Germany
| | - Ragai-Edward Matta
- Department of Prosthodontics, Erlangen University Hospital, Glückstrasse 11, 91054, Erlangen, Germany
| | - Linda Wolf
- Department of Prosthodontics, Erlangen University Hospital, Glückstrasse 11, 91054, Erlangen, Germany
| | - Manfred Wichmann
- Department of Prosthodontics, Erlangen University Hospital, Glückstrasse 11, 91054, Erlangen, Germany
| | - Bastian Bergauer
- Department of Oral and Maxillofacial Surgery, Erlangen University Hospital, Glueckstraße 11, 91054, Erlangen, Germany.
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Fuentes AD, Sforza C, Miralles R, Ferreira CL, Mapelli A, Lodetti G, Martin C. Assessment of electromyographic activity in patients with temporomandibular disorders and natural mediotrusive occlusal contact during chewing and tooth grinding. Cranio 2016; 35:152-161. [PMID: 27101810 DOI: 10.1080/08869634.2016.1173312] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES The aim of this study was to investigate whether the presence of a natural mediotrusive contact influences electromyographic (EMG) pattern activity in patients with temporomandibular disorders (TMDs). METHOD Bilateral surface EMG activity of the anterior temporalis (AT), masseter (MM), and sternocleidomastoid (SCM) muscles was recorded in 43 subjects during unilateral chewing and tooth grinding. Thirteen patients had TMD and a natural mediotrusive contact (Group 1), 15 had TMD without a natural mediotrusive contact (Group 2), and 15 were healthy subjects without mediotrusive contacts (Group 3). All subjects were examined according to the Research Diagnostic Criteria for TMD (RDC/TMD). All EMG values were standardized as the percentage of EMG activity recorded during maximum isometric contraction on cotton rolls. RESULTS EMG activity from all muscles measured showed no significant differences between groups during chewing and grinding. Overall, in all groups, the EMG activity during chewing was higher in the working side than the non-working side in AT and MM muscles. During grinding, these differences were only found in masseter muscles (mainly in eccentric grinding). SCM EMG activity did not show significant differences during chewing and grinding tasks. Symmetry, muscular balance, and absence of lateral jaw displacement were common findings in all groups. DISCUSSION EMG results suggest that the contribution of a natural mediotrusive occlusal contact to EMG patterns in TMD patients is minor. Therefore, the elimination of this occlusal feature for therapeutic purposes could be not indicated.
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Affiliation(s)
- Aler D Fuentes
- a Faculty of Dentistry, Institute for Research in Dental Sciences , University of Chile , Santiago , Chile.,b Faculty of Medicine, Oral Physiology Laboratory, Biomedical Sciences Institute , University of Chile , Santiago , Chile
| | - Chiarella Sforza
- c Functional Anatomy Research Center, Department of Biomedical Sciences for Health , Università degli Studi di Milano , Milan , Italy
| | - Rodolfo Miralles
- b Faculty of Medicine, Oral Physiology Laboratory, Biomedical Sciences Institute , University of Chile , Santiago , Chile
| | - Cláudia L Ferreira
- c Functional Anatomy Research Center, Department of Biomedical Sciences for Health , Università degli Studi di Milano , Milan , Italy
| | - Andrea Mapelli
- c Functional Anatomy Research Center, Department of Biomedical Sciences for Health , Università degli Studi di Milano , Milan , Italy.,d Department of Otorhinolaryngology, Ophthalmology, and Head and Neck Surgery , School of Medicine of Ribeirão Preto, University of São Paulo , São Paulo , Brazil
| | - Gianluigi Lodetti
- c Functional Anatomy Research Center, Department of Biomedical Sciences for Health , Università degli Studi di Milano , Milan , Italy.,e Department of Medical and Surgical Specialties, Radiologic Sciences, and Public Health, Dental Clinic , Università degli Studi di Brescia , Brescia , Italy
| | - Conchita Martin
- f Department of Stomatology IV, School of Dentistry , Complutense University of Madrid , Madrid , Spain
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Patti A, Bianco A, Messina G, Paoli A, Bellafiore M, Battaglia G, Iovane A, Traina M, Palma A. The influence of the stomatognathic system on explosive strength: a pilot study. J Phys Ther Sci 2016; 28:72-5. [PMID: 26957731 PMCID: PMC4755977 DOI: 10.1589/jpts.28.72] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 10/09/2015] [Indexed: 11/24/2022] Open
Abstract
[Purpose] Recent findings suggest there is an interesting interaction between the
stomatognathic system and the musculoskeletal system. The aim of this study was therefore
to examine the influence of the temporomandibular joint on the explosive strength of the
lower limbs. [Subjects and Methods] An observational study was carried out. The subjects
were 60 male football players who voluntarily participated in the investigation. After a
warm-up phase of 10 minutes, each participant performed three Squat Jumps (SJ) with
different mandible positions: mouth closed and mouth open. SJ heights were recorded using
a Sensor Medica force platform and the FreeMed system. [Results] Sixty participants were
enrolled in this study (age: 24 ± 7 yrs; height: 174 ± 4.6 cm; weight 63.7 ± 7.6 kg). The
SJ heights with the mouth closed, 38.50 ± 4.0 cm, were shorter than those with the mouth
open, 40.4 ± 4.1 cm. Statistical analysis showed there was a statistically significant
difference between the performances. [Conclusion] This pilot study highlighted that
occlusal factors can influence physical performance and this could have practical
applications in sports and exercise science. However, our results have to be confirmed in
studies with larger numbers of participants and supported by other investigations.
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Affiliation(s)
- Antonino Patti
- Sport and Exercise Sciences Research Unit, University of Palermo, Italy; Posturalab Italia, Italy
| | - Antonino Bianco
- Sport and Exercise Sciences Research Unit, University of Palermo, Italy
| | - Giuseppe Messina
- Sport and Exercise Sciences Research Unit, University of Palermo, Italy; Posturalab Italia, Italy
| | - Antonio Paoli
- Department of Biomedical Science, University of Padua, Italy
| | | | | | - Angelo Iovane
- Sport and Exercise Sciences Research Unit, University of Palermo, Italy
| | - Marcello Traina
- Sport and Exercise Sciences Research Unit, University of Palermo, Italy
| | - Antonio Palma
- Sport and Exercise Sciences Research Unit, University of Palermo, Italy
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The influence of dental occlusion on the body balance in unstable platform increases after high intensity exercise. Neurosci Lett 2016; 617:116-21. [DOI: 10.1016/j.neulet.2016.02.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 01/17/2016] [Accepted: 02/02/2016] [Indexed: 11/22/2022]
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Treffel L, Dmitrieva L, Gauquelin-Koch G, Custaud MA, Blanc S, Gharib C, Millet C. Craniomandibular System and Postural Balance after 3-Day Dry Immersion. PLoS One 2016; 11:e0150052. [PMID: 26913867 PMCID: PMC4767814 DOI: 10.1371/journal.pone.0150052] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 02/09/2016] [Indexed: 12/30/2022] Open
Abstract
The objective of the study was to determine the influence of simulated microgravity by exposure to dry immersion on the craniomandibular system. Twelve healthy male volunteers participated in a 3-day dry immersion study. Before and immediately after exposure we measured maximal bite force using piezoresistive sensors. The mechanical properties of the jaw and cervical muscles were evaluated before, during, and after dry immersion using MyotonPRO. Because recent studies reported the effects of jaw motor activity on the postural stability of humans, stabilometric measurements of center of pressure were performed before and after dry immersion in two mandibular positions: rest position without jaw clenching, and intercuspidal position during voluntary teeth clenching. Results revealed no significant changes of maximal bite force after dry immersion. All postural parameters were significantly altered by dry immersion. There were however no significant differences in stabilometric data according to mandibular position. Moreover the masseter tonicity increased immediately after the end of dry immersion period. Dry immersion could be used as a valid model for studying the effects of microgravity on human subjects. However, 3 days appear insufficient in duration to evaluate the effects of weightlessness on maximal bite force. Our research suggests a link between postural disturbance after dry immersion and masseter tonicity.
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Affiliation(s)
- Loïc Treffel
- Université Claude Bernard Lyon 1, Lyon, France
- Université de Strasbourg, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7178, Strasbourg, France
| | - Liubov Dmitrieva
- Institute of Biomedical Problems, Moscow, Russia
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6214 - Institut National de la Santé et de la Recherche Médicale 1083, Université d’Angers, Angers, France
| | | | - Marc-Antoine Custaud
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 6214 - Institut National de la Santé et de la Recherche Médicale 1083, Université d’Angers, Angers, France
- Centre de Recherche Clinique, Centre Hospitalo-Universitaire d’Angers, Angers, France
| | - Stéphane Blanc
- Université de Strasbourg, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7178, Strasbourg, France
| | - Claude Gharib
- Université Claude Bernard Lyon 1, Lyon, France
- Centre International d’Ostéopathie, Saint-Etienne, France
| | - Catherine Millet
- Université Claude Bernard Lyon 1, Lyon, France
- Service d’Odontologie, Hospices Civils de Lyon, Lyon, France
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Hellmann D, Stein T, Potthast W, Rammelsberg P, Schindler HJ, Ringhof S. The effect of force-controlled biting on human posture control. Hum Mov Sci 2015; 43:125-37. [PMID: 26282375 DOI: 10.1016/j.humov.2015.08.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 06/20/2015] [Accepted: 08/10/2015] [Indexed: 11/25/2022]
Abstract
Several studies have confirmed the neuromuscular effects of jaw motor activity on the postural stability of humans, but the mechanisms of functional coupling of the craniomandibular system (CMS) with human posture are not yet fully understood. The purpose of our study was, therefore, to investigate whether submaximum biting affects the kinematics of the ankle, knee, and hip joints and the electromyographic (EMG) activity of the leg muscles during bipedal narrow stance and single-leg stance. Twelve healthy young subjects performed force-controlled biting (FB) and non-biting (NB) during bipedal narrow stance and single-leg stance. To investigate the effects of FB on the angles of the hip, knee, and ankle joints, a 3D motion-capture system (Vicon MX) was used. EMG activity was recorded to enable analysis of the coefficient of variation of the muscle co-contraction ratios (CVR) of six pairs of postural muscles. Between FB and NB, no significant differences were found for the mean values of the angles of the ankle, knee, and hip joints, but the standard deviations were significantly reduced during FB. The values of the ranges of motion and the mean angular velocities for the three joints studied revealed significant reduction during FB also. CVR was also significantly reduced during FB for five of the six muscle pairs studied. Although submaximum biting does not change the basic strategy of posture control, it affects neuromuscular co-contraction patterns, resulting in increased kinematic precision.
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Affiliation(s)
- D Hellmann
- Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany.
| | - T Stein
- Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany; BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - W Potthast
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany; ARCUS Clinic Pforzheim, Pforzheim, Germany
| | - P Rammelsberg
- Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany
| | - H J Schindler
- Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany; Research Group Biomechanics, Institute for Mechanics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - S Ringhof
- Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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Ringhof S, Hellmann D, Meier F, Etz E, Schindler HJ, Stein T. The effect of oral motor activity on the athletic performance of professional golfers. Front Psychol 2015; 6:750. [PMID: 26082747 PMCID: PMC4451241 DOI: 10.3389/fpsyg.2015.00750] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 05/20/2015] [Indexed: 11/13/2022] Open
Abstract
Human motor control is based on complex sensorimotor processes. Recent research has shown that neuromuscular activity of the craniomandibular system (CMS) might affect human motor control. In particular, improvements in postural stability and muscle strength have been observed as a result of voluntary jaw clenching. Potential benefits of jaw aligning appliances on muscle strength and golf performance have also been described. These reports are highly contradictory, however, and the oral motor task performed is often unclear. The purpose of our study was, therefore, to investigate the effect of submaximum biting on golf performance via shot precision and shot length over three different distances. Participants were 14 male professional golfers - seven with sleep bruxism and seven without - randomly performing golf shots over 60m, 160m, or driving distance while either biting on an oral splint or biting on their teeth; habitual jaw position served as the control condition. Statistical analysis revealed that oral motor activity did not systematically affect golf performance in respect of shot precision or shot length for 60m, 160 m, or driving distance. These findings were reinforced by impact variables such as club head speed and ball speed, which were also not indicative of significant effects. The results thus showed that the strength improvements and stabilizing effects described previously are, apparently, not transferable to such coordination-demanding sports as golf. This could be due to the divergent motor demands associated with postural control and muscle strength on the one hand and the complex coordination of a golf swing on the other. Interestingly, subjects without sleep bruxism performed significantly better at the short distance (60 m) than those with bruxism. Because of the multifactorial etiology of parafunctional CMS activity, conclusions about the need for dental treatment to improve sports performance are, however, completely unwarranted.
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Affiliation(s)
- Steffen Ringhof
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology Karlsruhe, Germany
| | - Daniel Hellmann
- Department of Prosthodontics, Dental School, University of Heidelberg Heidelberg, Germany
| | - Florian Meier
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology Karlsruhe, Germany
| | - Eike Etz
- Department of Prosthodontics, Dental School, University of Heidelberg Heidelberg, Germany
| | - Hans J Schindler
- Department of Prosthodontics, Dental School, University of Heidelberg Heidelberg, Germany ; Research Group Biomechanics, Institute for Mechanics, Karlsruhe Institute of Technology Karlsruhe, Germany
| | - Thorsten Stein
- BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology Karlsruhe, Germany
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da Silva GP, Machado AA, Ferreira B, Vasconcelos PB, Verri ED, Gonçalves CR, Vasconcelos MAC, Siéssere S, Semprini M, Regalo SCH. Functional analysis of the stomatognathic system in individuals infected with human immunodeficiency virus. J Electromyogr Kinesiol 2015; 25:515-21. [PMID: 25783860 DOI: 10.1016/j.jelekin.2015.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 02/12/2015] [Accepted: 02/16/2015] [Indexed: 11/18/2022] Open
Abstract
PURPOSE To understand the effects of HIV type 1 on the function of the masticatory muscles. METHODS Sixty individuals were selected from both genders, aged between 22 and 57years (mean 36.77±9.33years), and divided into two groups: Group HIVG, 30 individuals with HIV subtype 1, and Group CG, 30 healthy individuals (control group). The individuals were submitted to assessments of their masticatory muscle activity, biting strength and thickness of the masticatory muscles by means of electromyography, maximal molar bite force and ultrasound imaging, respectively. The resultant data were statistically analyzed by t-tests (p<0.05). RESULTS The HIVG normalized EMG data from a mandibular rest position, protrusion, right and left laterality movement of the jaw showed that HIVG presented a relative increase in EMG activity compared to the CG. The HIVG had a lower masticatory cycle ability while chewing Parafilm M®, Raisins and Peanuts when compared to CG. During rest conditions, the ultrasound images showed a greater average muscular thickness in the right and left temporal region compared to CG. Upon maximal voluntary contraction, an increased average thickness was seen in the temporalis muscles and left sternocleidomastoid muscle when compared to the CG. CONCLUSION Based on the results of this research, it can be concluded that individuals with acquired immunodeficiency syndrome showed muscular changes related to the stomatognathic system, especially concerning EMG activity and muscle thickness.
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Affiliation(s)
- Gabriel Pádua da Silva
- Departamento de Morfologia, Fisiologia e Patologia Básica, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Alcyone Artioli Machado
- Unidade Especial de Tratamento em Doenças Infecciosas (UETDI), Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto-USP, Brazil
| | - Bruno Ferreira
- Departamento de Morfologia, Fisiologia e Patologia Básica, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Paulo Batista Vasconcelos
- Departamento de Morfologia, Fisiologia e Patologia Básica, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Edson Donizetti Verri
- Departamento de Morfologia, Fisiologia e Patologia Básica, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Camila Roza Gonçalves
- Departamento de Morfologia, Fisiologia e Patologia Básica, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | | | - Selma Siéssere
- Departamento de Morfologia, Fisiologia e Patologia Básica, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Marisa Semprini
- Departamento de Morfologia, Fisiologia e Patologia Básica, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Simone Cecilio Hallak Regalo
- Departamento de Morfologia, Fisiologia e Patologia Básica, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.
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Funktionelle Interdependenzen zwischen Kieferlage und motorischer Kontrolle von Haltung und Bewegung. MANUELLE MEDIZIN 2014. [DOI: 10.1007/s00337-014-1157-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Ringhof S, Stein T, Potthast W, Schindler HJ, Hellmann D. Force-controlled biting alters postural control in bipedal and unipedal stance. J Oral Rehabil 2014; 42:173-84. [PMID: 25354425 DOI: 10.1111/joor.12247] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2014] [Indexed: 01/01/2023]
Abstract
Human posture is characterised by inherent body sway which forces the sensory and motor systems to counter the destabilising oscillations. Although the potential of biting to increase postural stability has recently been reported, the mechanisms by which the craniomandibular system (CMS) and the motor systems for human postural control are functionally coupled are not yet fully understood. The purpose of our study was, therefore, to investigate the effect of submaximum biting on postural stability and on the kinematics of the trunk and head. Twelve healthy young adults performed force-controlled biting (FB) and non-biting (NB) during bipedal narrow stance and single-leg stance. Postural stability was quantified on the basis of centre of pressure (COP) displacements, detected by use of a force platform. Trunk and head kinematics were investigated by biomechanical motion analysis, and bite forces were measured using a hydrostatic system. The results revealed that FB significantly improved postural control in terms of reduced COP displacements, providing additional evidence for the functional coupling of the CMS and human posture. Our study also showed, for the first time, that reductions in the sway of the COP were accompanied by reduced trunk and head oscillations, which might be attributable to enhanced trunk stiffness during FB. This physiological response to isometric activation of the masticatory muscles raises questions about the potential of oral motor activity as a strategy to reduce the risk of falls among the elderly or among patients with compromised postural control.
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Affiliation(s)
- S Ringhof
- Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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Abstract
Every body structure is wrapped in connective tissue, or fascia, creating a structural continuity that gives form and function to every tissue and organ. Currently, there is still little information on the functions and interactions between the fascial continuum and the body system; unfortunately, in medical literature there are few texts explaining how fascial stasis or altered movement of the various connective layers can generate a clinical problem. Certainly, the fascia plays a significant role in conveying mechanical tension, in order to control an inflammatory environment. The fascial continuum is essential for transmitting muscle force, for correct motor coordination, and for preserving the organs in their site; the fascia is a vital instrument that enables the individual to communicate and live independently. This article considers what the literature offers on symptoms related to the fascial system, trying to connect the existing information on the continuity of the connective tissue and symptoms that are not always clearly defined. In our opinion, knowing and understanding this complex system of fascial layers is essential for the clinician and other health practitioners in finding the best treatment strategy for the patient.
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Affiliation(s)
- Bruno Bordoni
- Department of Cardiology, IRCCS S Maria Nascente, Don Carlo Gnocchi Foundation, Milan, Italy ; CRESO Osteopathic Centre for Research and Studies, Milan, Italy
| | - Emiliano Zanier
- CRESO Osteopathic Centre for Research and Studies, Milan, Italy ; EdiAcademy, Milan, Italy
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Gomes CAFDP, Politti F, El Hage Y, de Sousa DFM, Amorin CF, Gonzalez TDO, Biasotto-Gonzalez DA. Interference of Different Types of Mastication on Static Balance in Individuals without Temporomandibular Disorder. JOURNAL OF THE JAPANESE PHYSICAL THERAPY ASSOCIATION 2014; 17:8-13. [PMID: 25792903 DOI: 10.1298/jjpta.vol17_002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 03/11/2014] [Indexed: 11/23/2022]
Abstract
PURPOSE This study was to determine whether non-habitual (isotonic) bilateral and unilateral mastication with eyes open and eyes closed exerts an influence on static balance in individuals without temporomandibular disorder (TMD). METHOD An observational, cross-sectional study was conducted involving 20 volunteers aged 20 to 40 years without temporomandibular disorder. Static balance was assessed with the individuals in a quiet standing position on a force plate performing different types of mastication under six separate conditions. RESULTS Significant differences (p < .05) were found in the area of oscillation during bilateral mastication (eyes open) and the right unilateral mastication, significant differences were only found for oscillation area with eyes open and mediolateral center of pressure with eyes closed (p < .05). CONCLUSIONS The findings of the present study reveal that the stomatognathic system (bilateral and unilateral mastication) promote changes in some variables of static balance.
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Affiliation(s)
- Cid Andre Fidelis de Paula Gomes
- Rehabilitation Sciences Master's Program, Nove de Julho University (UNINOVE): Av. Francisco Matarazzo, 612 - Água Branca, São Paulo, SP, CEP: 05001100 Brazil
| | - Fabiano Politti
- Rehabilitation Sciences Master's Program, Nove de Julho University (UNINOVE): Av. Francisco Matarazzo, 612 - Água Branca, São Paulo, SP, CEP: 05001100 Brazil
| | - Yasmin El Hage
- Rehabilitation Sciences Master's Program, Nove de Julho University (UNINOVE): Av. Francisco Matarazzo, 612 - Água Branca, São Paulo, SP, CEP: 05001100 Brazil
| | - Dowglas Fernando Magalhães de Sousa
- Rehabilitation Sciences Master's Program, Nove de Julho University (UNINOVE): Av. Francisco Matarazzo, 612 - Água Branca, São Paulo, SP, CEP: 05001100 Brazil
| | - Cesar Ferreira Amorin
- Physiotherapy Master's Program, Cidade de São Paulo University (UNICID), São Paulo, SP, Brazil
| | - Tabajara de Oliveira Gonzalez
- Rehabilitation Sciences Master's Program, Nove de Julho University (UNINOVE): Av. Francisco Matarazzo, 612 - Água Branca, São Paulo, SP, CEP: 05001100 Brazil
| | - Daniela Aparecida Biasotto-Gonzalez
- Rehabilitation Sciences Master's Program, Nove de Julho University (UNINOVE): Av. Francisco Matarazzo, 612 - Água Branca, São Paulo, SP, CEP: 05001100 Brazil
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Ohlendorf D, Weyer K, Lohmeier T, Kernke F, Kopp S. Einfluss zweier Aufbissbehelfe auf die Oberkörperstatik jugendlicher Fußballspieler. MANUELLE MEDIZIN 2013. [DOI: 10.1007/s00337-013-1020-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Clinical association between teeth malocclusions, wrong posture and ocular convergence disorders: an epidemiological investigation on primary school children. BMC Pediatr 2013; 13:12. [PMID: 23343244 PMCID: PMC3561080 DOI: 10.1186/1471-2431-13-12] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Accepted: 01/18/2013] [Indexed: 12/11/2022] Open
Abstract
Background As the various systems in the body are inter-connected to form a single structural unit, a pathological condition in one area can also affect other areas. There are many known correlations between the visual and motor system. The importance of visual function, particularly the paracentral peripheral field of view, in motor coordination, ambulation and the maintenance of balance has been amply demonstrated. In line with current medical principles, which are moving towards a more holistic view of the human body, this study aims to investigate, in an interdisciplinary manner, the incidence of dental malocclusions together with posture and eye convergence disorders. Methods Six hundred and five children attending at the 3rd, 4th and 5th years of seven Genoa primary schools were examined. Each child underwent the following examinations: (i) dental/occlusal; (ii) orthoptic; and (iii) postural. Occlusal data concerned the presence of cross-bite, midline deviation with a mandibular shift, bad habits and deep or open bite. Postural assessment involved frontal and lateral inspection, investigation during trunk flexion and ambulation, and note of any asymmetry in the lower limbs. The recorded orthoptic data included those pertaining to ocular dominance, a cover test, convergence and the Brock string test. Results A prevalence of cases with an unphysiological gait was found in patients with overjet (14.70%) or overbite (14.87%), while the percentage of patients with normal occlusion that showed an unphysiological gait was 13.08%. Also, about 93.8%–94.2% of children showed normal legs without dysmetry, with no difference in respect to the type of occlusion. Subjects with an open bite or deep bite showed a slightly different distribution of right or left dominant eyes. Conclusion About 13% of children showed a pathological gait and, among them, vertical anomalies of occlusion (deep bite or open bite) were prevalent with respect to the other occlusal defects. The vertical dimension of occlusion revealed a slight relationship with the proper dominant eye. Postural, orthoptic, osteopathic and occlusal variables were often clinically associated, and therefore these disorders appear to request a multidisciplinary medical approach for their treatment.
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Baldini A, Nota A, Tripodi D, Longoni S, Cozza P. Evaluation of the correlation between dental occlusion and posture using a force platform. Clinics (Sao Paulo) 2013; 68:45-9. [PMID: 23420156 PMCID: PMC3552467 DOI: 10.6061/clinics/2013(01)oa07] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 09/16/2012] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES Force platforms are widely used to evaluate the relationship between posture and dental occlusion. This study evaluated whether force platforms are able to detect eventual postural modifications resulting from dental occlusion. METHOD A total of 44 healthy volunteers who were given no information on the aim of the study underwent six postural stabilometric exams under different mandibular and visual conditions. Four parameters were considered: sway area, sway velocity, X axis displacement of the center of the foot pressure and Y axis displacement of the center of the foot pressure. RESULTS An analysis of variance (ANOVA) revealed the relative influence of each factor; specifically, the ocular afference significantly influenced the sway area and sway velocity parameters, and the mandibular position had only a weak influence on the sway area parameter. CONCLUSIONS Vision was shown to influence body posture, and a weak correlation was observed between mandibular position and body posture in healthy subjects. However, the force platform is most likely not able to clearly detect this relationship. Gnathologists must use caution when using force platform analysis to modify a therapeutic plan. The sway area seems to be the most sensitive parameter for evaluating the effect of occlusion on body posture.
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Affiliation(s)
- Alberto Baldini
- University of Rome Tor Vergata, Department of Orthodontics, Rome/Italy.
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Perinetti G, Marsi L, Castaldo A, Contardo L. Is postural platform suited to study correlations between the masticatory system and body posture? A study of repeatability and a meta-analysis of reported variations. Prog Orthod 2012; 13:273-80. [DOI: 10.1016/j.pio.2011.12.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2011] [Revised: 12/12/2011] [Accepted: 12/13/2011] [Indexed: 11/26/2022] Open
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Ishida JI, Wada Y, Imai Y, Hirata Y, Yamashita M, Kirita T. Influence of mouth guards on autonomic nervous system activities: A quantitative study of pupillary flash responses. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/s1348-8643(12)00026-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Manfredini D, Castroflorio T, Perinetti G, Guarda-Nardini L. Dental occlusion, body posture and temporomandibular disorders: where we are now and where we are heading for. J Oral Rehabil 2012; 39:463-71. [PMID: 22435603 DOI: 10.1111/j.1365-2842.2012.02291.x] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The aim of this investigation was to perform a review of the literature dealing with the issue of relationships between dental occlusion, body posture and temporomandibular disorders (TMD). A search of the available literature was performed to determine what the current evidence is regarding: (i) The physiology of the dental occlusion-body posture relationship, (ii) The relationship of these two topics with TMD and (iii) The validity of the available clinical and instrumental devices (surface electromyography, kinesiography and postural platforms) to measure the dental occlusion-body posture-TMD relationship. The available posturographic techniques and devices have not consistently found any association between body posture and dental occlusion. This outcome is most likely due to the many compensation mechanisms occurring within the neuromuscular system regulating body balance. Furthermore, the literature shows that TMD are not often related to specific occlusal conditions, and they also do not have any detectable relationships with head and body posture. The use of clinical and instrumental approaches for assessing body posture is not supported by the wide majority of the literature, mainly because of wide variations in the measurable variables of posture. In conclusion, there is no evidence for the existence of a predictable relationship between occlusal and postural features, and it is clear that the presence of TMD pain is not related with the existence of measurable occluso-postural abnormalities. Therefore, the use instruments and techniques aiming to measure purported occlusal, electromyographic, kinesiographic or posturographic abnormalities cannot be justified in the evidence-based TMD practice.
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Affiliation(s)
- D Manfredini
- Department of Maxillofacial Surgery, TMD Clinic, University of Padova, Carrara, Italy.
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Baldini A, Cravino G, Rinaldi A, Cioffi D. Valutazione e trattamento gnato-posturale nei piloti militari dell’Aeronautica: un caso clinico. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.mor.2011.01.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Baldini A, Cravino G. Occlusione dentale e prestazione sportiva: revisione della letteratura. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.mor.2010.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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HELLMANN D, GIANNAKOPOULOS NN, BLASER R, EBERHARD L, SCHINDLER HJ. The effect of various jaw motor tasks on body sway. J Oral Rehabil 2011; 38:729-36. [DOI: 10.1111/j.1365-2842.2011.02211.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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SFORZA C, ROSATI R, De MENEZES M, MUSTO F, TOMA M. EMG analysis of trapezius and masticatory muscles: experimental protocol and data reproducibility. J Oral Rehabil 2011; 38:648-54. [DOI: 10.1111/j.1365-2842.2011.02208.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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PERINETTI G, CONTARDO L. Posturography as a diagnostic aid in dentistry: a systematic review. J Oral Rehabil 2009; 36:922-36. [DOI: 10.1111/j.1365-2842.2009.02019.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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