levator anguli superioris

[6], Venous drainage of the levator anguli oris muscle predominantly flows into the facial vein, which in turn empties into the internal jugular vein. It is therefore thought that the ILS compresses the prominent labial glands at the superior margin of the OOr, while the OOr can compress other labial glands that were situated between the OOr and the mucous membrane. Sinnatamby, C. S. Lasts Anatomy: Regional and Applied. The medial two-thirds of the arising fibers are more curved than the lateral one-third of the fibers. The levator labii superioris muscle, also known as the quadratus labii, contributes to facial expression andmovement of the mouth and upper lip. PubMed Central Journal of plastic, reconstructive & aesthetic surgery : JPRAS. The ILS had an oblique and linear origin from the incisive fossa of the maxilla to the point just medial to the origin of the LAO. 2010 Sep [PubMed PMID: 20811233], Moore K 2nd,Thompson R,Lian T, The pedicled levator labii superioris alaeque nasi flap: A durable single-stage option for reconstruction of full-thickness nasal defects. Type IV (n=10, 19.2%), in which less than one-third of the ILS fibers became superficial inserting fibers to blend with the LAO, and the other fibers became deep inserting fibers. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2016R1D1A1B03930402). This article incorporates text in the public domain from page 383 ofthe 20th edition of Gray's Anatomy (1918). 1/2 Innervation Levator labii superioris is innervated by the zygomatic and buccal branches of facial nerve (CN VII). major - elevate corners of mouth smile. The superficial inserting fibers blend with the medial fibers of the LAO to converge toward the modiolus, while the other fibers become deep inserting fibers that blend with the deep fibers of the OOr and zygomaticus major muscle (Zmj). Dashed line indicates the upper mucolabial fold. The most-lateral point (asterisk) of origin of the ILS was located higher than its most-medial point (arrow) of origin. The levator anguli oris lifts the angle of the mouth. Described methods of reanimating the smile in patients with longstanding flaccid facial paralysis include the use of the sternohyoid and omohyoid muscles, the serratus anterior muscle, and the split gracilis muscle. The ILS reportedly arises from the incisive fossa of the maxilla and arches laterally, interlacing with fibers of the peripheral part of the OOr. A thin muscle layer that was formed by some fibers of the ILS and LAO converged toward the modiolus in 19.2% of the specimens. Internet Explorer). To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Besides orbicularis oris, this group also contains the levator anguli oris, levator labii superioris alaeque nasi, levator labii superioris, zygomaticus major, zygomaticus minor, risorius, depressor labii inferioris, depressor anguli oris, mentalis, incisivus superior and inferior, and buccinator muscles . J Anat 166, 121133 (1989). Philadelphia: Lea & Febiger, 1918; Bartleby.com, 2000. www.bartleby.com/107/. [1], Medial to the levator labii superioris is the levator labii superioris alaeque nasi muscle (sometimes called the angular head of the levator labii superioris muscle). J Anat 214, 3644 (2009). After the ILS coursed laterally along the anterior part of the upper mucolabial fold, it divided into superficial and deep inserting fibers in 48 specimens (92.3%) and it did not divide in 4 specimens (7.7%). Both infraorbital laminae give rise to the levator labii superioris, among many other facial mimetic muscles. At the time the article was created Daniel J Bell had no recorded disclosures. They described that the ILS can be affected when performing an upper labial vestibule incision and correction of the gingival smile. Other causes of facial paralysis include multiple sclerosis, poliomyelitis, Guillain-Barr syndrome, and SARS-CoV-2 infection, among many others. Epub [PubMed PMID: 27040583], Koltsidopoulos P, Tsea M, Kafki S, Skoulakis C. Intramuscular haemangioma of the levator anguli oris: a rare case. Mi-Sun Hur. As the course of the ILS arched laterally it became the superolateral margin of the OOr, enlarging the dimension of the superior peripheral part of the OOr. It deepened the superolateral margin of the OOr posteriorly. Sci Rep 8, 12879 (2018). PubMed To reveal the attachment of the ILS to the maxilla, some fibers of the superior peripheral part of the OOr were pulled down. Illustrations licensed under CC BY 4.0. Nicolau, P. J. For the grindcore band, see, List of Latin and Greek words commonly used in systematic names, Learn how and when to remove this template message, https://en.wikipedia.org/w/index.php?title=Levator_anguli_oris&oldid=1119940795, Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918), Articles lacking in-text citations from May 2015, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 4 November 2022, at 06:57. The muscles of the face begin to develop between the third and eighth weeks of embryonic development. [6][7], Following the facial vein, lymphatic fluid from themidfacedrains into the preauricular, infra-auricular, parotid, nasolabial, buccinator, submandibular, submental, internal jugular, and anterior jugular basins, ultimately into the cervical lymph nodes. Get the most important science stories of the day, free in your inbox. The canine space (also termed the infra-orbital space), is a fascial space of the head and neck (sometimes also termed fascial spaces or tissue spaces). Also, the ILS was located between the OOr and LAO in a fan shape. Journal of plastic, reconstructive & aesthetic surgery : JPRAS. The levator labii superioris (pl. Chummy S. Sinnatamby. Gross anatomy Summary origin: canine fossa of the maxilla insertion: modiolus and merges with depressor anguli oris muscle innervation: facial nerve (VII) You are using a browser version with limited support for CSS. All of the superficial inserting fibers and some of the deep inserting fibers of the ILS converged toward the modiolus in the present study. The periosteum adjacent to the upper mucolabial fold was cut and removed in order to reveal the origin of the ILS. It then blends with other muscles that insert into the lips. [2], The position of the levator anguli oris in the medial midface makes it unlikely to be injured iatrogenically, even in major facial surgery, such as rhytidectomy. Continuous arrangement of the incisivus labii superioris muscle (ILS; arrowheads) between the orbicularis oris muscle (OOr) and the levator anguli oris muscle (LAO). It is classified as the buccolabial facial muscle. Aesthetic surgery journal. [5][6] The muscles originateas a thickening of the mesoderm layer of the second branchial arch. Specifically, the levator anguli oris is innervated by the buccal branches of the facial nerve. Wijayaweera, C. J., Amaratunga, N. A. PubMed Clinics in dermatology. 2014 Mar [PubMed PMID: 24676413], Diaspro A,Cavallini M,Piersini P,Sito G, Gummy Smile Treatment: Proposal for a Novel Corrective Technique and a Review of the Literature. 6): Type I (n=4, 7.7%), in which all ILS fibers blended with the LAO. (b) In type II, more than two-thirds of the ILS fibers became superficial inserting fibers to blend with the LAO; the other fibers became deep inserting fibers of the ILS. The ptosis seen in paralysis of the levator palpebrae superioris is usually more pronounced than that seen due to paralysis of the superior tarsal muscle. A 2018 study performed in Taiwan found that 31 out of 32 adult cadavers had zygomaticus minor muscle fibers inserting into the upper lip, originating from the zygomaticregion and the orbicularis oculi muscle. Maxilla to the upper lip and the nose. Learn a new word every day. Textbooks describe the ILS as originating from the incisive fossa of the maxilla4,5,16. 2013 Oct:33(5):350-2 [PubMed PMID: 24227903], Rao AG, Koganti VP, Prabhakar AK, Soni S. Modified lip repositioning: A surgical approach to treat the gummy smile. (Lea & Febiger, 1918). The ILS and ILI are attached to the incisive fossa of the maxilla and mandible, respectively, and they are the deepest fibers in the lip4. [13] This option is a newer technique and is much less expensive and traumatizing to patients than performing surgery. Buc, buccinator muscle. Along with the zygomaticus major and minor, the levator labii superioris, and the levator labii superioris alaeque nasi, it provides upper dental show, primarilyduring smiling, and for maintaining the resting tone and position of the upper lip. 1997 Jul-Sep [PubMed PMID: 9497543], Hur MS,Hu KS,Park JT,Youn KH,Kim HJ, New anatomical insight of the levator labii superioris alaeque nasi and the transverse part of the nasalis. Epub [PubMed PMID: 25858429], Anatomy, Head and Neck: Eye Levator Anguli Oris Muscle, Feel free to get in touch with us and send a message. Feb 20, 2021 - The levator labii superioris (Latin: musculus levator labii superioris) is a facial muscle located above the upper lip close to the opening of the oral cavity. The temporal fascia surrounds the temporalis muscle in a strong fibrous sheet that is divided into clearly distinguishable superficial and deep layers that originate from the same region with the muscle fibers of the two layers intermingled in the superior part of the muscle. The Levator Labii Superioris Alaeque Nasi has two parts: Medial Slip and Lateral Slip. J Craniofac Surg 24, 602604 (2013). Pellatt, A. Palastanga, N. & Soames, R. Anatomy and Human Movement: Structure and Function. These observations indicate that the ILS may assist to compress the labial glands and the upper oral vestibule, controlling modiolar movements and thereby integrating the movements of the mouth and lips. The arising ILS fibers arch and cover the prominent labial glands at the superior margin of the OOr. Clinics in plastic surgery. reported a method to analyze the faceusing the levator anguli oris muscle as a landmark to determine optimal locations for volumizing injections and zones to avoid to minimize the risk of complications. Illustrations licensed under CC BY 4.0. Anatomical features of the incisivus labii superioris muscle and its relationships with the upper mucolabial fold, labial glands, and modiolar area, https://doi.org/10.1038/s41598-018-31334-4. American journal of otolaryngology. These muscles of facial expression, also named craniofacial muscles, are found in the subcutaneous tissue and emanate from bone or fascia, to attach onto the skin. 2020 May 1:44(3):313-325. doi: 10.5993/AJHB.44.3.4. Correspondence to The Annals of otology, rhinology, and laryngology. PubMed Central In the meantime, to ensure continued support, we are displaying the site without styles Four types of insertion patterns of the incisivus labii superioris muscle (ILS; arrowheads) in the modiolar area in the posterior aspect. Botulinum toxin injections into the zygomaticus minor are usually considered to treat a gummy smile or facial asymmetry in patients with excessive upward and lateral displacement of the upper lip [ 31 ]. Levator anguli oris. The muscle is attached to the upper frontal process of the maxilla and inserts into the skin of the lateral part of the nostril and upper lip. Buc, buccinator muscle; LAO, levator anguli oris muscle. 5. 2011 May; [PubMed PMID: 21532443], Ishida LH,Ishida LC,Ishida J,Grynglas J,Alonso N,Ferreira MC, Myotomy of the levator labii superioris muscle and lip repositioning: a combined approach for the correction of gummy smile. The OOr and the modiolus, which are insertions of the ILS, are positioned by their attaching muscles. More recently, in 2015, Surek et al. If the cause is hyperactivity of the upper lip muscles, myotomy and lip repositioning followed by orthodontic treatment can be an effective surgical intervention. M.S. The deep inserting fibers of the incisivus labii superioris muscle (ILS; arrowheads) in the modiolar area in the posterior aspect. Contraction of the pars peripheralis fibers in humans positions the lip in labial elevation (an action involved in both facial expression and speech), while the pars marginalis may be regarded as being involved in speech modification17,19. The medial arising fibers arched laterally, while the lateral arising fibers descended almost straight downward. The literature has described several uses for the levator anguli oris musclein both aesthetic and functional surgery. Insert into the lips Anatomy and Human Movement: Structure and Function, free in inbox! Ils was located higher than its most-medial point ( asterisk ) of origin, in which ILS. 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