Distribution of lip‐seal strength and its relation to oral motor functions

Abstract Objectives Lip‐seal strength, which represents the muscle strength of the lips, appears to chiefly contribute to mastication and pronunciation. However, the functional characteristics of lip‐seal strength in adults are still undefined. The present study aimed to understand not only the dist...

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Autores principales:	Yoshihiro Kugimiya, Takeshi Oki, Midori Ohta, Masahiro Ryu, Kenichiro Kobayashi, Kaoru Sakurai, Takayuki Ueda
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	lip pursing lip‐closing force lip‐closing strength lip‐seal strength Dentistry RK1-715
Acceso en línea:	https://doaj.org/article/981f2c0394eb4634b24141fe6dc0c0c6
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spelling	oai:doaj.org-article:981f2c0394eb4634b24141fe6dc0c0c62021-12-02T12:59:21ZDistribution of lip‐seal strength and its relation to oral motor functions2057-434710.1002/cre2.440https://doaj.org/article/981f2c0394eb4634b24141fe6dc0c0c62021-12-01T00:00:00Zhttps://doi.org/10.1002/cre2.440https://doaj.org/toc/2057-4347Abstract Objectives Lip‐seal strength, which represents the muscle strength of the lips, appears to chiefly contribute to mastication and pronunciation. However, the functional characteristics of lip‐seal strength in adults are still undefined. The present study aimed to understand not only the distribution of lip‐seal strength in adult men and women but also the effect of age on this strength and identify oral motor functions correlated with lip‐seal strength. Materials and methods The subjects included 339 participants (men: 170, age 39.2 ± 18.2 years; women: 169, age 43.1 ± 19.7 years). Oral motor function was evaluated for lip‐seal strength, oral diadochokinesis (ODK), tongue pressure, occlusal force, and masticatory performance. Statistical analyses included the Shapiro–Wilk, Mann–Whitney U, and Jonckheere–Terpstra tests, in addition to the Spearman's correlation analysis and curvilinear regression analysis. Results Lip‐seal strength did not have a normal distribution (p < 0.001). The mean ± standard deviation and median (first quartile, third quartile) of lip‐seal strength were 11.2 ± 3.4 and 10.9 (8.7, 13.2)N for the whole sample, 12.3 ± 3.4 and 11.9 (9.4, 14.4)N for men, and 10.2 ± 3.0 and 9.9 (8.0, 12.0)N for women. A significant difference was observed in lip‐seal strength between men and women (p < 0.001). Oral motor functions showed a marked correlation with lip‐seal strength, including tongue pressure, occlusal force, and masticatory performance and ODK (/pa/ and /ta/), tongue pressure, and masticatory ability in men and women, respectively. In women, lip‐seal strength declined with increase in age. Conclusions Lip‐seal strength was non‐normally distributed in both men and women, and lip‐seal strength was affected by age only in women. Lip‐seal strength and multiple oral motor functions were significantly correlated. Because the indicators of perioral muscle strength and performance were correlated with lip‐seal strength, lip‐seal strength may also partially reflect the condition of the perioral muscles.Yoshihiro KugimiyaTakeshi OkiMidori OhtaMasahiro RyuKenichiro KobayashiKaoru SakuraiTakayuki UedaWileyarticlelip pursinglip‐closing forcelip‐closing strengthlip‐seal strengthDentistryRK1-715ENClinical and Experimental Dental Research, Vol 7, Iss 6, Pp 1122-1130 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	lip pursing lip‐closing force lip‐closing strength lip‐seal strength Dentistry RK1-715
spellingShingle	lip pursing lip‐closing force lip‐closing strength lip‐seal strength Dentistry RK1-715 Yoshihiro Kugimiya Takeshi Oki Midori Ohta Masahiro Ryu Kenichiro Kobayashi Kaoru Sakurai Takayuki Ueda Distribution of lip‐seal strength and its relation to oral motor functions
description	Abstract Objectives Lip‐seal strength, which represents the muscle strength of the lips, appears to chiefly contribute to mastication and pronunciation. However, the functional characteristics of lip‐seal strength in adults are still undefined. The present study aimed to understand not only the distribution of lip‐seal strength in adult men and women but also the effect of age on this strength and identify oral motor functions correlated with lip‐seal strength. Materials and methods The subjects included 339 participants (men: 170, age 39.2 ± 18.2 years; women: 169, age 43.1 ± 19.7 years). Oral motor function was evaluated for lip‐seal strength, oral diadochokinesis (ODK), tongue pressure, occlusal force, and masticatory performance. Statistical analyses included the Shapiro–Wilk, Mann–Whitney U, and Jonckheere–Terpstra tests, in addition to the Spearman's correlation analysis and curvilinear regression analysis. Results Lip‐seal strength did not have a normal distribution (p < 0.001). The mean ± standard deviation and median (first quartile, third quartile) of lip‐seal strength were 11.2 ± 3.4 and 10.9 (8.7, 13.2)N for the whole sample, 12.3 ± 3.4 and 11.9 (9.4, 14.4)N for men, and 10.2 ± 3.0 and 9.9 (8.0, 12.0)N for women. A significant difference was observed in lip‐seal strength between men and women (p < 0.001). Oral motor functions showed a marked correlation with lip‐seal strength, including tongue pressure, occlusal force, and masticatory performance and ODK (/pa/ and /ta/), tongue pressure, and masticatory ability in men and women, respectively. In women, lip‐seal strength declined with increase in age. Conclusions Lip‐seal strength was non‐normally distributed in both men and women, and lip‐seal strength was affected by age only in women. Lip‐seal strength and multiple oral motor functions were significantly correlated. Because the indicators of perioral muscle strength and performance were correlated with lip‐seal strength, lip‐seal strength may also partially reflect the condition of the perioral muscles.
format	article
author	Yoshihiro Kugimiya Takeshi Oki Midori Ohta Masahiro Ryu Kenichiro Kobayashi Kaoru Sakurai Takayuki Ueda
author_facet	Yoshihiro Kugimiya Takeshi Oki Midori Ohta Masahiro Ryu Kenichiro Kobayashi Kaoru Sakurai Takayuki Ueda
author_sort	Yoshihiro Kugimiya
title	Distribution of lip‐seal strength and its relation to oral motor functions
title_short	Distribution of lip‐seal strength and its relation to oral motor functions
title_full	Distribution of lip‐seal strength and its relation to oral motor functions
title_fullStr	Distribution of lip‐seal strength and its relation to oral motor functions
title_full_unstemmed	Distribution of lip‐seal strength and its relation to oral motor functions
title_sort	distribution of lip‐seal strength and its relation to oral motor functions
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/981f2c0394eb4634b24141fe6dc0c0c6
work_keys_str_mv	AT yoshihirokugimiya distributionoflipsealstrengthanditsrelationtooralmotorfunctions AT takeshioki distributionoflipsealstrengthanditsrelationtooralmotorfunctions AT midoriohta distributionoflipsealstrengthanditsrelationtooralmotorfunctions AT masahiroryu distributionoflipsealstrengthanditsrelationtooralmotorfunctions AT kenichirokobayashi distributionoflipsealstrengthanditsrelationtooralmotorfunctions AT kaorusakurai distributionoflipsealstrengthanditsrelationtooralmotorfunctions AT takayukiueda distributionoflipsealstrengthanditsrelationtooralmotorfunctions
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Distribution of lip‐seal strength and its relation to oral motor functions

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