Age- and sex-related differences in 3D facial shape and muscle pressure in subjects with normal occlusion

Rajbhoj, Amit Arvind; Matthews, Harold; Doucet, Kaat; Claes, Peter; Willems, Guy; Begnoni, Giacomo; Llano-Pérula, María Cadenas de

doi:10.1016/j.compbiomed.2022.106325

Cited by 3 publications

(2 citation statements)

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“…Posen 30 showed that an age‐related gradient of lip strength was observed between 8 and 20 years of age. Rajbhoj et al 32 . observed no significant difference between children (mixed dentition) and adolescents (permanent dentition, under 18 years of age), but found significant differences between children and adults and adolescents and adults, with larger values in adults.…”

Section: Discussionmentioning

confidence: 97%

“…Although some previous studies reported no significant relationship between age and lip pressure, other studies found a significant relationship. In studies examining the closing pressure of the upper and lower lips, Posen, 30 Horn et al., 31 and Rajbhoj et al 32 . reported a significant relationship between participants' age and measured lip force, indicating that lip strength or pressure increased with age.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of oral function using a composite sensor during maximum lip closure and swallowing in normal children and adults

Hozawa,

Nakamura,

Sotome

et al. 2024

J of Oral Rehabilitation

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BackgroundThere is growing interest in the development of objective methods for assessing lip‐closing function in children.ObjectiveTo obtain normative data for healthy children in the developmental stages of lip closure function, we quantitatively evaluated oral movements associated with lip closure in children and adults using a composite sensor (CS).MethodsTwenty‐five normal children (11 boys, 14 girls) aged 8.8 ± 1.6 years and 25 young adults (13 men, 12 women) aged 27.4 ± 3.9 years were asked to perform test movements, maximal lip closure and swallowing of 3 mL of water. Lip‐closing pressure (LP), intraoral baro‐pressure (IP) and electromyographic (EMG) activity of the upper orbicularis oris muscle were simultaneously recorded using the CS.ResultsEMG activity of the upper orbicularis oris muscle during closure was significantly greater in adults than in children. There were significant positive correlations between integral values of LP and EMG for closure in adults (r = .527, p = .008) but not in children, and significant positive correlations between integral values of LP and IP for swallowing in children (r = .508, p = .010) but not in adults.ConclusionsThe CS may provide an effective tool for evaluating lip function in children acquiring oral function. For the combination of maxillary orbicularis oculus contraction and formation of intraoral negative pressure, EMG activity of the upper orbicularis oris muscle involvement in LP and IP involvement in LP may differ between children and adults.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%