1
|
Sakaguchi K, Mehta NR, Maruyama T, Correa LP, Yokoyama A. Effect of masticatory movements on head and trunk sways, and sitting and foot pressure distributions during sitting position. J Oral Rehabil 2023; 50:1253-1260. [PMID: 37418585 DOI: 10.1111/joor.13556] [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: 04/13/2023] [Revised: 06/04/2023] [Accepted: 06/27/2023] [Indexed: 07/09/2023]
Abstract
BACKGROUND The head plays an important role in the postural control. Chewing co-activates jaw and neck muscles leading to coordinated jaw and head-neck movements. Therefore, to examine effect of masticatory movements on head and trunk sways, and sitting and foot pressure distributions during mastication is helpful in the attempt to understand the interrelationship between stomatognathic function and posture control system in the sitting position. OBJECTIVES The purpose of this study was to test the hypothesis in healthy subjects that masticatory movements affect head and trunk sways and sitting and foot pressure distributions during sitting position. METHODS A total of 30 healthy male subjects with an average age of 25.3 years (range, 22-32 years) were evaluated. The CONFORMat™ and MatScan™ system were used to analyse changes in sitting pressure distribution center of sitting pressure (COSP) and changes in foot pressure distribution center of foot pressure (COFP), respectively, and the three-dimensional motion analysis system was used to analyse changes in head and trunk postures while subjects remained sitting position with rest position, centric occlusion and chewing. The total trajectory length of COSP/COFP, COSP/COFP area, and head and trunk sway values were compared between the three conditions to evaluate whether masticatory movement affected the stability of head and trunk sways and sitting and foot pressure distributions. RESULTS Total trajectory length of COSP and COSP area during chewing were significantly shorter and smaller respectively than it was in rest position and centric occlusion (p ⟨ .016). Head sway value during chewing was significantly larger than it was in rest position and centric occlusion (p ⟨ .016). CONCLUSION Masticatory movements affect sitting pressure distribution and head movements during sitting position.
Collapse
Affiliation(s)
- Kiwamu Sakaguchi
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Noshir R Mehta
- Department of Diagnostic Sciences, Craniofacial Pain Center, Tufts University School of Dental Medicine, Boston, Massachusetts, USA
| | - Tomoaki Maruyama
- Department of Industrial Engineering, Computer Science Course, National Institute of Technology (KOSEN), Ibaraki College, Ibaraki, Japan
| | - Leopoldo P Correa
- Department of Diagnostic Sciences, Craniofacial Pain Center, Tufts University School of Dental Medicine, Boston, Massachusetts, USA
| | - Atsuro Yokoyama
- Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| |
Collapse
|
2
|
Lee SU, Na S, Yu S, Lee TK, Lee ES. Mouth-Opening-Induced Vertigo and Downbeat Nystagmus. J Clin Neurol 2021; 17:607-609. [PMID: 34595878 PMCID: PMC8490893 DOI: 10.3988/jcn.2021.17.4.607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/07/2021] [Accepted: 06/07/2021] [Indexed: 11/23/2022] Open
Affiliation(s)
- Sun Uk Lee
- Department of Neurology, Korea University Medical Center, Seoul, Korea.,Department of Neurology, Seoul National University College of Medicine, Seoul, Korea
| | - Seunghee Na
- Department of Neurology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Sungwook Yu
- Department of Neurology, Korea University Medical Center, Seoul, Korea.,Department of Neurology, Korea University College of Medicine, Seoul, Korea
| | - Tae Kyeong Lee
- Department of Neurology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Eek Sung Lee
- Department of Neurology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
|
5
|
Lin CY, Young YH. Effect of betel nut chewing on the otolithic reflex system. Clin Neurophysiol 2017; 128:138-146. [DOI: 10.1016/j.clinph.2016.09.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 09/10/2016] [Accepted: 09/14/2016] [Indexed: 12/11/2022]
|
6
|
Modulation of central nystagmus by vision, proprioception, and efference copy signals: a systematic evaluation. J Neurol 2016; 263:735-42. [DOI: 10.1007/s00415-016-8032-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 01/11/2016] [Accepted: 01/12/2016] [Indexed: 10/22/2022]
|
7
|
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: 20] [Impact Index Per Article: 2.2] [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.
Collapse
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
| |
Collapse
|
8
|
Head-shaking and Vibration-induced Nystagmus During and Between the Attacks of Unilateral Ménière’s Disease. Otol Neurotol 2015; 36:865-72. [DOI: 10.1097/mao.0000000000000743] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
9
|
Alghadir A, Zafar H, Whitney SL, Iqbal Z. Effect of chewing on postural stability during quiet standing in healthy young males. Somatosens Mot Res 2014; 32:72-6. [DOI: 10.3109/08990220.2014.969837] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
10
|
Lee SU, Park JH, Kim HJ, Deriu F, Kim JS. Swallowing-induced vertigo and downbeat nystagmus. J Neurol 2014; 261:2457-9. [DOI: 10.1007/s00415-014-7539-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 10/08/2014] [Indexed: 12/19/2022]
|