Explore chapters and articles related to this topic
The lower third of the face
Published in Jani van Loghem, Calcium Hydroxylapatite Soft Tissue Fillers, 2020
Radial lip lines have both a muscular (dynamic) as well as a skin (nondynamic) component. Due to reduction of skeletal platform and deep fat in the lips, the orbicularis oris muscle can become looser and thereby hyperactive, contributing to the dynamic component of radial lip lines. Maxillary and mandibular bone resorption can be corrected by placing nondiluted CaHA, or other volumizers, on the periosteum, as discussed in other chapters (nasolabial folds, pre-jowl sulcus, and marionette lines). CaHA for the correction of deep fat resorption of the lips is generally not recommended, as the CaHA product is white and as the deep fat is essentially the submucosa of the lips, the product may be visible when injected at that depth. The dermal component, however, is reduction of especially collagen and is a good indication for (hyper)diluted CaHA.
Grafts and Local Flaps in Head and Neck Cancer
Published in John C Watkinson, Raymond W Clarke, Terry M Jones, Vinidh Paleri, Nicholas White, Tim Woolford, Head & Neck Surgery Plastic Surgery, 2018
The orbicularis oris muscle contained within the lips is a complex muscle containing fibres in different orientations which can close the mouth, approximate the lips to the maxilla and mandible or purse the lips. In addition, muscle fibres blend into the orbicularis oris from the levator labii superioris and other elevators of the lip superiorly, from buccinators laterally and from depressor labii inferioris and the other lip depressors inferiorly.
Head and neck
Published in Aida Lai, Essential Concepts in Anatomy and Pathology for Undergraduate Revision, 2018
Attachments of orbicularis oris muscle– origin: maxilla + mandible– insertion: circles around mouth– nerve SS: buccal branch of facial n. (CNVII)– function: closes and protrudes lips; compresses distended cheeks
Evaluating safety in hyaluronic acid lip injections
Published in Expert Opinion on Drug Safety, 2021
Tyler Safran, Arthur Swift, Sebastian Cotofana, Andreas Nikolis
The major support for the lips arises from the orbicularis oris muscle (OOM) which has its only slight bony connection to the maxilla in the midline inferior to the nasal spine. The remainder of the lips are without direct bony support and their position is therefore determined by the balance of a radial organization of mimetic muscles whose function is to elevate, depress, and broaden both the vermilion and ergotrid. The OOM further provides the crucial function of oral competence during eating as well as the pursing action necessary for proper articulation of sound and speech as well as acts of intimacy (kissing). The most influencing point of action is the modiolus located 0.7–1.5 cm lateral to the oral commissure [29] one of whose inserting muscles (Depressor anguli oris) is frequently targeted with neuromodulator to reduce the inferior-traction on the oral commissure and increase the cranial re-positioning of the corner of the mouth.
Clinical management of squamous cell carcinoma of the tongue: patients not eligible for free flaps, a systematic review of the literature
Published in Expert Review of Anticancer Therapy, 2021
Giuseppe Colella, Raffaele Rauso, Davide De Cicco, Ciro Emiliano Boschetti, Brigida Iorio, Chiara Spuntarelli, Renato Franco, Gianpaolo Tartaro
Reconstruction by BMM flap was investigated by two studies [8,9]. All 38 cases were treated by partial/hemiglossectomy (Figure 2). Twenty-nine cases had T1 SCC (76,3%), 7 were T2 SCC (18.4%), and 2 were T4 SCC (5.2%) (Figure 3). Partial necrosis of the flap occurred in two cases (about 30% of its extension) and was surgically treated by removal of the ischemic portion, leading to complete healing without functional complications [8]. Two cases showed limitation in the mouth opening due to a contracting scar (one of them undergone surgical Z-plasty) [8,9]. Temporary deficit of the Orbicularis oris muscle occurred in four cases, spontaneously solved over two month after resective surgery [8]. Nine cases showed temporary limitation of the tongue mobility, solved after the detachment of the flap pedicle [8].
Surgical repair for transverse facial cleft: two flaps with a superiorly rotated single Z-plasty lateral to the commissure
Published in Journal of Plastic Surgery and Hand Surgery, 2019
Pan Zhou, Lin Qiu, Yan Liu, Tianwu Li, Xionghui Ding
Various techniques have been performed to repair the malformation, but we find some problems with the traditional surgical methods. Simple suture of the orbicularis oris muscle can easily cause a postoperative cheek depression. In addition, linear cutaneous closure obtains an asymmetric commissure especially when opening the mouth, and a conspicuous scar is easy to manifest at the commissure [11]. Multiple skin Z-plasty could lengthen the deficient transverse distance of the buccal tissue and prevent later scar contracture, but a more visible scar appeared [12]. Thus, the commissural flap and Z-plasty must be meticulously designed to minimize visible scarring. In addition, stomatitis or even commissural fester often emerged because of the direct suturing of the multi-layer tissue forming an acuminate angulus oris, in which saliva is stored up easily. The acuminate form cannot buffer the commissural tension when opening the mouth. This also made an unsightly postoperative dynamic appearance because the tension was obviously greater than that on the contralateral side when opening the mouth. Thus, strict adherence to the principles of surgical reconstruction in the repair of macrostomia was important to prevent a poor treatment outcome [13].