ArticleClinical and experimental dental research2021
Distribution of lip-seal strength and its relation to oral motor functions.
Article in Clinical and experimental dental research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 19 citations in OpenAlex.
- Factors Associated with Lip-Closing Strength in Children Undergoing Orthodontic Assessment: A Cross-Sectional Study.Diagnostics (Basel, Switzerland) · 2026Article
- Association between oral food processing ability and nutritional status of older adults based on factor analysis.BMC nutrition · 2026Article
- Sonographic elastography evaluation of the orbicularis oris muscle inferior during muscle contraction generating maximal tensile force in children.Odontology · 2026Article
- A Cross-Language Study of Oral Diadochokinesis: Rates and Rhythm.Folia phoniatrica et logopaedica : official organ of the International Association of Logopedics and Phoniatrics (IALP) · 2026Article
- Detection of Lip, Tongue, Masseter, and Temporalis Muscle Contractions with Electromyography Tools as an Early Diagnostic Medium for Dentoalveolar Malocclusion.European journal of dentistry · 2025Article
- Relationship between oral hypofunction and medical expenditure in older adults in Japan.Scientific reports · 2025Article
- Oral Diadochokinesis, Tongue Pressure, and Lip-Seal Strength Among Japanese Male Workers in the Taxi Industry: A Cross-Sectional Study.Clinics and practice · 2024Article
- Relationships between Lip Seal Strength, Tongue Pressure, and Daytime Sleepiness in Japanese Workers: A Cross-Sectional Study.Clinics and practice · 2023Article
- What Do Differences between Alternating and Sequential Diadochokinetic Tasks Tell Us about the Development of Oromotor Skills? An Insight from Childhood to Adulthood.Brain sciences · 2023Article
- Lip Seal Strength and Tongue Pressure among Japanese Male Workers: Comparison of Different Age Groups.International journal of environmental research and public health · 2023Article
- Distribution of lip-seal strength and its relation to oral motor functions.Clinical and experimental dental research · 2021Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
objectivesLip-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
methodsThe 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.
resultsLip-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.
conclusionsLip-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.
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