Interaction between deglutition, tongue posture, and malocclusion: A comparison of intraoral compartment formation in subjects with neutral occlusion or different types of malocclusion

Knösel, Michael; Nüser, Carolin; Jung, Klaus; Helms, Hans‐Joachim; Engelke, Wilfried; Sandoval, Paulo

doi:10.2319/101615-699.1

Cited by 13 publications

(14 citation statements)

References 20 publications

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“…Contradicting to the above Luffingham, Winders [7,29]. Supporting of our result were the studies of Shiono, Knösel and Cheng [13,30,31].…”

Section: Discussionsupporting

confidence: 76%

Evaluation of Tongue Force on Mandibular Incisor in Various Malocclusions

2020

JODH

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Objectives: The aim of the study is to evaluate the tongue force on the mandibular incisors in various malocclusions and among genders. Material and Methods: 512 subjects (340 females and 172 males) within the age group of 18-28years were selected for the study. The subjects were divided into three groups according the molar relation of the subjects. Molar relation and the tongue force exerted on the mandibular incisor of the subjects were recorded using a diagnostic kit and a Flexiforce resistive sensor respectively. Tongue force at rest (TFR), during swallowing (TFS) and maximum tongue force (MTF) were measured. Results: There was a significant increase in MTF among males than females. A significant relation among the groups when TFR and TFS were compared was also found. Conclusion: TFR and TFS were found to be influential in causing malocclusion and also a stronger tongue musculature among males than females was concluded while comparing MTF

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“…Contradicting to the above Luffingham, Winders [7,29]. Supporting of our result were the studies of Shiono, Knösel and Cheng [13,30,31].…”

Section: Discussionsupporting

confidence: 76%

Evaluation of Tongue Force on Mandibular Incisor in Various Malocclusions

2020

JODH

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“…Obstruction of the upper airways forces the patient to breathe through the mouth, and in addition to OSAS, these factors cause oral dysfunction, such as lip incompetence, low position of the tongue in the floor of the mouth, tongue thrust, and may lead to unbalanced muscle and function [ 32 ] disturbances in swallowing, mastication, speech [ 34 ], and stability of occlusion [ 35 ].…”

Section: Discussionmentioning

confidence: 99%

A retrospective cephalometric study on upper airway spaces in different facial types

et al. 2017

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BackgroundCraniofacial growth pattern has been correlated with variations in size of the upper airway spaces. The objective of this study was to evaluate the nasopharyngeal, oropharyngeal, and hypopharyngeal airway spaces variations according to the craniofacial growth pattern, by comparing brachyfacial, mesofacial, and dolichofacial in Angle Class I individuals.MethodsTo measure the spaces, 45 lateral teleradiographs were used and divided into 3 groups per the craniofacial growth pattern, determined by the Tweed cephalometry angular measurements: FMA and Y-axis. To evaluate the airways, sleep apnea cephalometry was used, containing 28 points that compose 14 factors. Three groups were compared relative to each of the 14 sleep apnea cephalometry measurements. Adherence test to the normal curve was performed. For the non-normally distributed data—measurement of the inferior pharyngeal space—the Kruskal-Wallis test was used for comparison between the groups. For the remaining data, the distribution was normal and ANOVA test was used.ResultsStatistically significant difference was verified among the groups for the measurement of the median posterior-palatal space, with the difference being pointed out by the post hoc test between the brachyfacial and dolichofacial groups. For the other measurements, there was no statistically significant difference.ConclusionsIt could be concluded that there was difference in the median posterior-palatal space measurement, in the oropharynx region, which was reduced for individuals with a dolichofacial pattern.

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“…Those created by oral posture—the positions of the jaws and tongue in relation to each other when a child is not eating or speaking—constitute signals that, among other signals, guide the growth of the jaws. What Mew ( 2004 ) postulated and more recently Engelke and his colleagues (Engelke et al 2011 , Knösel et al 2016 ) have demonstrated as “correct” oral posture is holding the teeth lightly together, with the tongue positioned against the palate; clinical studies show that this posture results in an adequately roomy jaw (Wong 2018 ).…”

Section: Origins: Evolutionary and Environmental Causes Of The Epidemmentioning

confidence: 99%

“…The overall failure of the dental community to understand the jaw epidemic is partly because “most of the theories accept genetic changes as the main or underlying cause” (Knösel et al 2016 ). This persistent error can be seen in this quote on malocclusion in the respected WebMD ( www.webmd.com/oral-health/guide/crooked-teeth-misaligned-bites#1 ): “Most often crooked teeth, overbites, and underbites are inherited traits just as the color of your eyes or size of your hands.”…”

Section: “Genetic” Causationmentioning

confidence: 99%

The Jaw Epidemic: Recognition, Origins, Cures, and Prevention

Kahn¹,

Ehrlich²,

Feldman³

et al. 2020

BioScience

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Contemporary humans are living very different lives from those of their ancestors, and some of the changes have had serious consequences for health. Multiple chronic “diseases of civilization,” such as cardiovascular problems, cancers, ADHD, and dementias are prevalent, increasing morbidity rates. Stress, including the disruption of traditional sleep patterns by modern lifestyles, plays a prominent role in the etiology of these diseases, including obstructive sleep apnea. Surprisingly, jaw shrinkage since the agricultural revolution, leading to an epidemic of crooked teeth, a lack of adequate space for the last molars (wisdom teeth), and constricted airways, is a major cause of sleep-related stress. Despite claims that the cause of this jaw epidemic is somehow genetic, the speed with which human jaws have changed, especially in the last few centuries, is much too fast to be evolutionary. Correlation in time and space strongly suggests the symptoms are phenotypic responses to a vast natural experiment—rapid and dramatic modifications of human physical and cultural environments. The agricultural and industrial revolutions have produced smaller jaws and less-toned muscles of the face and oropharynx, which contribute to the serious health problems mentioned above. The mechanism of change, research and clinical trials suggest, lies in orofacial posture, the way people now hold their jaws when not voluntarily moving them in speaking or eating and especially when sleeping. The critical resting oral posture has been disrupted in societies no longer hunting and gathering. Virtually all aspects of how modern people function and rest are radically different from those of our ancestors. We also briefly discuss treatment of jaw symptoms and possible clinical cures for individuals, as well as changes in society that might lead to better care and, ultimately, prevention.

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Interaction between deglutition, tongue posture, and malocclusion: A comparison of intraoral compartment formation in subjects with neutral occlusion or different types of malocclusion

Abstract: The null hypothesis was rejected for mean VS plateau durations and peak heights and for SPS AUC. Negative pressures at the VS may stabilize outer soft tissues passively and may explain the dental arch form shaping effect by mimic muscles.

Cited by 13 publications

References 20 publications

Evaluation of Tongue Force on Mandibular Incisor in Various Malocclusions

Evaluation of Tongue Force on Mandibular Incisor in Various Malocclusions

A retrospective cephalometric study on upper airway spaces in different facial types

The Jaw Epidemic: Recognition, Origins, Cures, and Prevention

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