Effect of occlusion status on the time required for initiation of recovery in response to external disturbances in the standing position

Hosoda, Masataka; Masuda, Tadashi; Isozaki, Koji; Takayanagi, Kiyomi; Sakata, Kiyoshi; Takakuda, Kazuo; Nitta, Osamu; Morita, Sadao

doi:10.1016/j.clinbiomech.2006.11.001

Cited by 26 publications

(39 citation statements)

References 24 publications

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“…[27][28][29][30][31][32] Several recent studies revealed the positive effects of teeth clenching on static balance. [10][11][12][13][14][15] However, it is suggested that teeth clenching during jump-landing may adversely affect dynamic balance control in this study. Previous studies indicate that teeth clenching affects the skeletal muscles of the limb, and contributes to stabilization of body orientation.…”

Section: Effect Of Teeth Clenching On Dynamic Balancementioning

confidence: 67%

“…There were also several reports that confirmed the oral motor activity relations on postural control, [10][11][12][13][14][15] revealing the superior effect of teeth clenching on body balance control against body sway. However, these pieces of research were subjected to static balance, and there were few reports that investigated the effect of teeth clenching on dynamic balance.…”

mentioning

confidence: 86%

“…Several studies report the relationship between teeth clenching and static balance. [10][11][12][13][14][15] Fujino et al 11 investigated the effect of voluntary teeth clenching on static balance. They showed that voluntary teeth clenching contributed to stabilization of the postural stance perturbed transiently by electrical stimulation.…”

Section: Effect Of Teeth Clenching On Dynamic Balancementioning

confidence: 99%

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The Effect of Teeth Clenching on Dynamic Balance at Jump-Landing: A Pilot Study

Nakamura

Yoshida

Churei

et al. 2017

Journal of Applied Biomechanics

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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.Keywords: dynamic balance, teeth clenching, ground reaction force, center of pressure, electromyogramTeeth clenching is performed in a voluntary manner by the contraction of mandibular muscles. These muscles receive innervation from the motor area of the cerebral cortex, the same as skeletal muscles of the limbs.1 Recently, it has been reported that chewing activity has a positive effect on attention, mood improvement, and stress relief.2,3 Moreover, positive correlation between muscle strength of the skeletal muscles and teeth clenching was reported. Sasaki et al 4 reported that teeth clenching force had a positive correlation with isometric gastrocnemius muscle strength. A number of studies have demonstrated that voluntary teeth clenching facilitated the H-reflex in both the agonist and antagonist muscles of the lower limb, [5][6][7][8][9] suggesting that teeth clenching contributed to stabilization of body orientation by strengthening the skeletal muscles of the limb.There were also several reports that confirmed the oral motor activity relations on postural control, 10-15 revealing the superior effect of teeth clenching on body balance control against body sway. However, these pieces of research were subjected to static balance, and there were few reports that investigated the effect of teeth clenching on dynamic balance.Stabilization of dynamic balance is important for sport activity and injury prevention. Although the effects of teeth clenching on sport performance and injury prevention were investigated in several pieces of research, 16-18 they remain controversial. Additionally, the subsequent occlusion status (presence and force of teeth clenching) in various sports is also unknown. In this study, we investigated the occlusion status and the effect ...

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Section: Effect Of Teeth Clenching On Dynamic Balancementioning

confidence: 67%

mentioning

confidence: 86%

Section: Effect Of Teeth Clenching On Dynamic Balancementioning

confidence: 99%

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The Effect of Teeth Clenching on Dynamic Balance at Jump-Landing: A Pilot Study

Nakamura

Yoshida

Churei

et al. 2017

Journal of Applied Biomechanics

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“…It is possible that occlusal changes are involved in the decline of balance ability in the elderly. Indeed, in the absence of proper occlusion, the ability of the body to adjust its COG becomes impaired (Hosoda et al, 2007). It has been reported that wearing an occlusal splint may allow patients to alter their postural attitude (Milani et al, 2000) and occlusal therapy has been shown to induce a re-equilibrium of masticatory muscles via a descending action resulting in an improved body posture (Bracco et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…hand grip) (Ebben, 2006;Hiroshi, 2003;Cherry et al, 2010). It has also been reported that dental occlusion status contributes to the maintenance of postural balance (Milani et al, 2000;Hosoda et al, 2007). Previous studies allow us to infer that the jaw and neck systems are functionally related.…”

Section: Effect Of Three Different Jaw Positions On Postural Stabilitmentioning

confidence: 99%

Effect of three different jaw positions on postural stability during standing

H.¹

2015

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SummaryStudies in the literature show that jaw and neck regions are linked anatomically, biomechanically and neurologically. Voluntary clenching has been shown to improve muscle strength and performance of various motor tasks. Information from the neck sensory-motor system is reported to be important for posture. Hence it is reasonable to believe that activation of the jaw sensorymotor system has the potential to modulate posture. In a sample of 116 healthy subjects, we compared center of gravity (COG) velocity during quiet standing on a foam surface during three test positions: i) resting jaw, ii) open jaw, and iii) clenching; these were tested in two conditions: with eyes open and with eyes closed. The COG velocity decreased significantly during clenching in comparison to both open and resting jaw positions (p<0.0001). This suggests that the jaw sensory-motor system can modulate postural mechanisms. We conclude that jaw clenching can enhance postural stability during standing on an unstable surface in both the presence and absence of visual input in healthy adults and suggest that this should be taken into consideration in treatment and rehabilitation planning for patients with postural instability.

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Influence of different jaw positions on dynamic balance using Y‐balance test

et al. 2019

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BackgroundJaw 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.MethodsEighty 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.ResultsThere 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.ConclusionsAlthough 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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Effect of occlusion status on the time required for initiation of recovery in response to external disturbances in the standing position

Cited by 26 publications

References 24 publications

The Effect of Teeth Clenching on Dynamic Balance at Jump-Landing: A Pilot Study

The Effect of Teeth Clenching on Dynamic Balance at Jump-Landing: A Pilot Study

Effect of three different jaw positions on postural stability during standing

Influence of different jaw positions on dynamic balance using Y‐balance test

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