The Research Progress on the Clinical Diagnosis and Treatment of Incompetent Lip Seal

doi:10.12337/zgkqjxjyzz.2025.03.004

Chinese Journal of Stomatological Continuing Education ›› 2025, Vol. 28 ›› Issue (3): 142-146.DOI: 10.12337/zgkqjxjyzz.2025.03.004

Previous Articles Next Articles

The Research Progress on the Clinical Diagnosis and Treatment of Incompetent Lip Seal

Dingzhuo Jiang, Xiaomeng Dong, Yafen Zhu, Zhifang Wu^*

Department of Pediatric Dentistry, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Zhejiang Provincial Clinical Research Center for Oral Diseases & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou 310000, Zhejiang Province, P.R. China

Online:2025-05-31 Published:2025-05-31
Contact: Zhifang Wu. Tel: 0571-87215529. Email: wzf1980@zju.edu.cn. Address: No.166, Qiutao North Rd, Hangzhou 310000, Zhejiang Province, P.R. China.

Abstract

Abstract: Incompetent lip seal (ILS) can significantly affect craniofacial development and function, resulting in abnormal tooth eruption and alignment, as well as swallowing dysfunction. This article systematically reviews the research progress on labial incompetence, including the influencing factors of lip muscle closure force (physiological and pathological factors), measurement methods for lip muscle closure force, the impact of lip muscle closure force on dental and jaw development, and treatment strategies for labial incompetence, aiming to provide clinical diagnostic and therapeutic references.

Key words: incompetent lip seal, craniofacial development, lip-closing strength, measurement of lip muscles, lip muscle training

Dingzhuo Jiang, Xiaomeng Dong, Yafen Zhu, Zhifang Wu. The Research Progress on the Clinical Diagnosis and Treatment of Incompetent Lip Seal[J]. Chinese Journal of Stomatological Continuing Education, 2025, 28(3): 142-146.

References

[1] Inada E, Saitoh I, Kaihara Y, et al.Incompetent lip seal affects the form of facial soft tissue in preschool children[J]. Cranio, 2021, 39(5):405-411.
[2] Inada E, Kaihara Y, Nogami Y, et al.Lip and facial training improves lip-closing strength and facial morphology[J]. Arch Oral Biol, 2023, 154:105761.
[3] Otsugu M, Sasaki Y, Mikasa Y, et al.Incompetent lip seal and nail biting as risk factors for malocclusion in Japanese preschool children aged 3-6 years[J]. BMC Pediatr, 2023, 23(1):532.
[4] Nogami Y, Saitoh I, Inada E, et al.Prevalence of an incompetent lip seal during growth periods throughout Japan: a large-scale, survey-based, cross-sectional study[J]. Environ Health Prev Med, 2021, 26(1):11.
[5] Drevensek M, Papić JS.The influence of the respiration disturbances on the growth and development of the orofacial complex[J]. Coll Antropol, 2005, 29(1):221-225.
[6] Yang X, Lai G, Wang J.Effect of orofacial myofunctional therapy along with preformed appliances on patients with mixed dentition and lip incompetence[J]. BMC Oral Health, 2022, 22(1):586.
[7] Rajbhoj AA, Matthews H, Doucet K, et al.Influence of age and diet consistency on the oral muscle pressure of orthodontically treated and untreated subjects with normal occlusion and comparison of their 3D facial shape[J]. Clin Oral Investig, 2023, 27(7):3649-3661.
[8] Saitoh I, Inada E, Kaihara Y, et al.The relationship between lip-closing strength and the related factors in a cross-sectional study[J]. Pediatric Dental Journal, 2017, 27(3):115-120.
[9] Murakami M, Adachi T, Nakatsuka K, et al.Gender differences in maximum voluntary lip-closing force during lip pursing in healthy young adults[J]. J Oral Rehabil, 2012, 39(6):399-404.
[10] Kugimiya Y, Oki T, Ohta M, et al.Distribution of lip-seal strength and its relation to oral motor functions[J]. Clin Exp Dent Res, 2021, 7(6):1122-1130.
[11] Hijiya K, Masuda Y, Miyamoto T, et al.Age-related differences in maximum voluntary lip-closing force and ability to control lip-closing force[J]. J Oral Biosci, 2021, 63(2):210-216.
[12] Hashiguchi C, Shiono Y, Morikawa K, et al.Relationship of lip closing force with oral cavity function[J]. The Japanese Journal of Pediatric Dentistry, 2017, 55(1):1-10.
[13] Zhang J, Fu Y, Wang L, et al.Adenoid facies: a long-term vicious cycle of mouth breathing, adenoid hypertrophy, and atypical craniofacial development[J]. Front Public Health, 2024, 12:1494517.
[14] Masutomi Y, Goto T, Ichikawa T.Mouth breathing reduces oral function in adolescence[J]. Sci Rep, 2024, 14(1):3810.
[15] Bokov P, Dahan J, Boujemla I, et al.Prevalence of mouth breathing, with or without nasal obstruction, in children with moderate to severe obstructive sleep apnea[J]. Sleep Med, 2022, 98:98-105.
[16] Basheer B, Hegde KS, Bhat SS, et al.Influence of mouth breathing on the dentofacial growth of children: a cephalometric study[J]. J Int Oral Health, 2014, 6(6):50-55.
[17] Worley ML, Patel KG, Kilpatrick LA.Cleft Lip and Palate[J]. Clin Perinatol, 2018, 45(4):661-678.
[18] Chen Y, Zhang C, Yao M, et al.Force Balance Reconstruction of the Orbicularis Oris in Secondary Unilateral Cleft Lip Deformity[J]. Aesthetic Plast Surg, 2024, 48(13):2382-2388.
[19] Findik Y, Baykul T, Aydin MA, et al.Evaluation of lip force in patients with unilateral and bilateral cleft lip[J]. Br J Oral Maxillofac Surg, 2017, 55(4):391-395.
[20] Taori KP, Niranjane PP, Daigavane P.Nasal Cartilage Molding in a Case of Unilateral Cleft Lip and Alveolus (Type D): A Case Report[J]. Cureus, 2023, 15(12): e50998.
[21] Van Geneugden L, Verdonck A, Willems G, et al.Relation between maximum oral muscle pressure and dentoalveolar characteristics in patients with cleft lip and/or palate: a prospective comparative study[J]. J Clin Med, 2023, 12(14):4598.
[22] Galek K, Bice Em, Marquez G.Tongue and lip comparisons between healthy and nondysphagic poststroke individuals[J]. Folia Phoniatr Logop, 2022, 74(1):46-53.
[23] Kawamura K, Maeda K, Miyahara S, et al.Association between oral frailty and sarcopenia among frailty clinic outpatients: A cross-sectional study[J]. Nutrition, 2024, 124:112438.
[24] Silva DBE, Corrêa CC, Weber SAT.Orofacial myofunctional and polysomnographic characteristics of children with Down syndrome and obstructive sleep apnea: A pilot study[J]. Codas, 2024, 36(3):e20230119.
[25] Menon D, Mansfield P, Cordice D, et al.Pilot study of a novel transmembranous electromyography device for assessment of oral cavity and oropharyngeal muscles[J]. Muscle Nerve, 2022, 65(3):303-310.
[26] Partal I, Aksu M.Changes in lips, cheeks and tongue pressures after upper incisor protrusion in Class II division 2 malocclusion: a prospective study[J]. Prog Orthod, 2017, 18(1):29.
[27] Jung MH, Yang WS, Nahm DS.Effects of upper lip closing force on craniofacial structures[J]. Am J Orthod Dentofacial Orthop, 2003, 123(1):58-63.
[28] Lee YS, Ryu J, Baek SH, et al.Comparative analysis of the differences in dentofacial morphology according to the tongue and lip pressure[J]. Diagnostics (Basel), 2021, 11(3):503.
[29] Jung MH, Yang WS, Nahm DS.Maximum closing force of mentolabial muscles and type of malocclusion[J]. Angle Orthod, 2010, 80(1):72-79.
[30] Lambrechts H, De Baets E, Fieuws S, et al.Lip and tongue pressure in orthodontic patients[J]. Eur J Orthod, 2010, 32(4):466-471.
[31] Ruan WH, Su JM, Ye XW.Pressure from the lips and the tongue in children with class III malocclusion[J]. J Zhejiang Univ Sci B, 2007, 8(5):296-301.
[32] Chen S, Cai Y, Chen F.Lip closing force of Class III patients with mandibular prognathism: A case control study[J]. Head Face Med, 2014, 10:33.
[33] Takehana Y, Masuda Y, Kageyama T, et al.The relationship between lip-closing force and dental arch morphology in patient with Angle Class I malocclusion[J]. J Oral Rehabil, 2017, 44(3):205-212.
[34] Doto N, Yamada K.The relationship between maximum lip closing force and tongue pressure according to lateral craniofacial morphology[J]. Orthod Waves, 2015, 74:69-75.
[35] Park HS, Park JY, Kwon YH, et al.Effect of orbicularis oris muscle training on muscle strength and lip closure function in patients with stroke and swallowing disorder[J]. J Phys Ther Sci, 2018, 30(11):1355-1356.
[36] 吴艳棋, 胡祥莹, 王雪纯, 等. 早期唇肌功能训练对口呼吸儿童牙颌面发育的影响[J]. 中华口腔正畸学杂志, 2022, 29(1):13-17.
[37] Ryu M, Oki T, Ohta M, et al.Effect of lip-seal resistance training on lip-seal strength in young adults[J]. Bull Tokyo Dent Coll, 2021, 62(3):163-170.
[38] Nogami Y, Saitoh I, Inada E, et al.Lip-closing strength in children is enhanced by lip and facial muscle training[J]. Clin Exp Dent Res, 2022, 8(1):209-216.
[39] Oki T, Ohta M, Takano T, et al.Effective training duration and frequency for lip-seal training in older people using a self-training instrument[J]. Gerodontology, 2021, 38(4):422-428.
[40] Wertsén M, Stenberg M.Measuring lip force by oral screens. Part 1: Importance of screen size and individual variability[J]. Clin Exp Dent Res, 2017, 3(3):87-92.

The Research Progress on the Clinical Diagnosis and Treatment of Incompetent Lip Seal

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 0

Recommended Articles

Metrics

Comments