How to Trip Rapid Review

Step 1: Select articles relevant to your search (remember the system is only optimised for single intervention studies)

Step 2: press

Step 3: review the result, and maybe amend the or if you know better! If we're unsure of the overall sentiment of the trial we will display the conclusion under the article title. We then require you to tell us what the correct sentiment is.

252 results for

Orbicularis Oris

Latest & greatest

Export results

Use check boxes to select individual results below

SmartSearch available

Trip's SmartSearch engine has discovered connected searches & results. Click to show

141. Bell Palsy (Overview)

of the eighth cranial nerve. The facial nerve passes through the stylomastoid foramen in the skull and terminates into the zygomatic, buccal, mandibular, and cervical branches. These nerves serve the muscles of facial expression, which include the frontalis, orbicularis oculi, orbicularis oris, buccinator, and platysma muscles. Other muscles innervated by the facial nerve include the stapedius, stylohyoid, posterior belly of the digastric, occipitalis, and anterior and posterior auricular muscles. All

2014 eMedicine Emergency Medicine

142. Surgical Complications (Diagnosis)

or ptosis (the orbicularis oculi muscle has a coexisting supply from the zygomatic branch). The zygomatic branch of the facial nerve is less vulnerable as it crosses the zygoma because of its deep plane; it exits the parotid gland prior to its entry into the orbicularis oculi muscle. Injury to this nerve results in ectropion and in the unilateral inability to close the eyelid. Transection of the buccal branch of the facial nerve along its course from the parotid gland to the orbicularis oris muscle (...) , especially in elderly patients with thin skin. Transection of the temporal branch to the frontalis muscle results in unilateral eyebrow ptosis and loss of the normal forehead furrows (see images below). Injury to the temporal branch of the facial nerve causing eyebrow droop and loss of normal forehead furrows. Injury to the temporal branch of the facial nerve causing an inability to raise the eyebrow. Injury to the branches supplying the orbicularis oculi muscle may result in difficulty closing the eye


143. Oral Cutaneous Fistulas (Diagnosis)

or orbicularis oris muscle may result in cutaneous spread. Infection from the mandibular molars is usually confined to the lingual aspect of the oral cavity by the mylohyoid muscle and to the buccal aspect by the inferior attachment of the buccinator muscle. If the infection penetrates to the lingual area inferior to the mylohyoid muscle, infections of the submandibular, sublingual, and submental spaces may result. If the infection spreads inferior to the buccinator muscle attachment, cutaneous spread may (...) also may spread to the canine fossa, buccinator space, lateral pterygoid space, and infratemporal space. Spread of infection to the lateral pterygoid and infratemporal spaces is associated with trismus. Infection of maxillary premolars almost always stays confined to the oral cavity and most commonly spreads to the buccal side of the alveolar ridge. Infection from the maxillary anterior teeth is usually contained within the oral cavity. Spread of infection superior to the levator anguli oris muscle


144. Craniofacial, Unilateral Cleft Nasal Repair

of the facial muscles, especially in the orbicularis oris, in distorting the anatomy is another important consideration. Abnormal insertions or tractions of disorganized muscle may increase or accentuate the deformity as the face continues to grow. [ ] Nasal tip skin and mucosae are usually normal. The lower lateral cartilage is subluxed on the cleft side and inappropriately lengthens the cleft side of the nose. [ ] However, the quantity of soft tissue present in the nostril on the cleft side is sufficient

2014 eMedicine Surgery

145. Craniofacial, Bilateral Cleft Lip Repair

length and vertical height to the lip during reconstruction. Bilateral cleft lip repair. (A) The prolabial width is typically set at 4-5 mm. (B) The prolabial flap is elevated to the base of the columella. The adjacent flaps are turned over to create a labial sulcus. (C) The orbicularis oris muscle, dissected from the overlying skin, is approximated across the midline. (D) The skin is approximated, and the Cupid's bow is created from the lateral vermilion flaps. Previous Next: Epidemiology Frequency (...) that is exposed to air) and the wet mucosa. The primary muscle of the lip is the orbicularis oris. It has 2 well-defined components: the deep (internal) layer and the superficial (external) layer. The deep fibers run circumferentially from commissure (modiolus) to commissure (modiolus) and function as the primary sphincter for oral feeding. The superficial fibers run obliquely, interdigitating with the other muscles of facial expression to terminate in the dermis, and function to provide subtle shades

2014 eMedicine Surgery

146. Cleft Lip

is characteristically deformed, and the medial crus is displaced posteriorly. The dome is separated from that of the noncleft side, and the lateral crus is flattened and stretched across the cleft. The axis of the nostril on the cleft side is characteristically oriented in the horizontal plane. This position is in contrast to the normal vertical axis of the nostril on the opposite side. The muscular fibers of the orbicularis oris do not decussate transversely as in the normal lip; rather, they course obliquely

2014 eMedicine Surgery

147. Chin Implants

. Projection of the chin is dependent on the mental protuberance and tubercles. The chin is separate from the lip at the labiomental angle. However, the chin and lip have an intimate relationship. The depressor muscles insert on the mental tubercles and interdigitate with the orbicularis oris muscle. Any intervention on the chin can affect the lips. Previous Next: Contraindications Severe microgenia is a contraindication to augmentation mentoplasty. Other contraindications include labial incompetence, lip

2014 eMedicine Surgery

148. Cheek Reconstruction

gland, where it branches at the pes anserinus into upper (zygomaticofacial) and lower (cervicofacial) divisions. The upper division forms the temporal and zygomatic branches, which primarily supply the frontalis and orbicularis oculi, zygomaticus major and minor, and levator labii superioris muscles. The lower division forms the buccal, marginal mandibular, and cervical branches, which primarily supply the buccinator, orbicularis oris, and platysma muscles. A great deal of arborization is present (...) between the zygomatic and buccal branches. Indeed, variations in individual anatomy, exact patterns of branching, and patterns of innervation are common. The zygomaticus major, orbicularis oculi, and risorius muscles are of particular clinical relevance because they are innervated via the deep surface of their muscle bellies. See for moreinformation. The muscles of facial expression, which are anatomically associated with the cheek, include the zygomaticus major and minor, orbicularis oculi

2014 eMedicine Surgery

149. Congenital Malformations, Mouth and Pharynx

detachment of musculature from atypical locations and realignment in a more anatomically functional position. [ ] Cleft lip The orbicularis oris muscle is the primary muscle of the lip and can be divided functionally and anatomically into 2 parts (see the image below). [ ] The deep component, in concert with other oropharyngeal muscles, works in swallowing and serves as a sphincter. The superficial component is a muscle of facial expression and inserts into the anterior nasal spine, sill, alar base (...) , and skin to form the philtral ridges. Muscular defects in unilateral deformity. In a complete cleft lip (CL), the deep fibers of the orbicularis oris muscle are interrupted by the cleft and end on either side of the defect instead of making their way around the mouth. In addition, the superficial component of the orbicularis oris turns upward, along the margins of the cleft and ends beneath the ala or columella. [ ] Incomplete cleft lip behaves in a similar manner, except when the cleft is less than

2014 eMedicine Surgery

150. Monitors, Facial Nerve

constant at this level. The threshold setting may be altered if prognostic information about facial nerve recovery is sought at the end of the procedure. Previous Next: Electrode Placement Paired electrodes are placed in 2 facial muscle groups. (Two separate muscles are usually monitored, principally to assure redundancy.) The orbicularis oris and the orbicularis oculi are usually selected. They are relatively large facial muscles and are easily identified. The portion of the electrode not within (...) the facial nerve in the absence of the nerve's visual identification is unreliable and fraught with hazard. Ashram et al pointed out that stimulation of the nervus intermedius can result in a long-latency, low-altitude response recorded only in the orbicularis oris channel. [ ] The nervus intermedius lies in an entirely different position from the main trunk of the facial nerve. The operating surgeon must be aware of this potential pitfall in intraoperative facial nerve monitoring and should be aware

2014 eMedicine Surgery

151. Facelift, Extended SMAS

the surface of the orbicularis oculi, the superficial temporal fascia, the frontalis muscle, and the superficial cervical fascia. When the SMAP is part of the surgical strategy, the pattern of the skin excision is particularly important to the effectiveness of a facelift. Once the facial integument has been released from its retaining ligaments [ ] and fusion planes, the force generated in the approximation of the edges of the excisional defect is an important determinant of the new facial contours (...) to the corner of the mouth that is excluded from dissection. It is a mobile 4 X 4-cm full-thickness section of the cheek. The inferior border of this patch is just above the mandibular ligament; the medial border is at the anguli oris. The modiolar peninsula is in a highly mobile area of the masticatory part of the face; dissection is unnecessary. The intact peninsula is more efficient in transmitting forces to the lower face and it captures extra blood supply from the facial and labial vessels

2014 eMedicine Surgery

152. Dynamic Reanimation for Facial Paralysis

from the skull base (D), transfer of the temporalis muscle in a subcutaneous plane, but superficial to the muscular aponeurotic system (E), and insertion of the temporalis muscle into the orbicularis oris muscle with an overcorrected position (F). Intraoral approach harvests the masseter muscle for transfer. Incision is made along the gingival sulcus (A). One muscle is exposed; curved scissors are used to transect the muscle in the midportion (B). Two slips of muscle are attached to the dermal

2014 eMedicine Surgery

153. Burns, Electrical

occurs for 3-5 months before spontaneous softening takes place. Sites of involvement Electric burns of the oral cavity can involve the lip, tongue, mucous membranes, and underlying bone. [ ] The most frequent site of involvement is the upper and lower lips with the intervening commissure. This injury to the lip may be associated with damage to the orbicularis oris muscle as well as mucous membranes. As muscles heal, may develop, and repair of the injured mucous membranes may result in labial (...) of the oral opening to attain adequate functional and aesthetic appearance of the injured mouth. Position each commissure laterally equidistant to the midline of the lips, and maintain the orbicularis oris muscle at a 2-point fixation. This prosthetic treatment can be accomplished either intraorally or extraorally, depending on the patient's dentition and ability to cooperate. Because these patients are often aged only 1-2 years, parents must participate and cooperate in the treatment plan. Perform

2014 eMedicine Surgery

154. BOTOX&reg

on the galea aponeurotica near the coronal suture and inserts on the superciliary ridge of the frontal bone and skin of the brow, interdigitating with fibers of the brow depressors (ie, procerus, corrugator supercilii, orbicularis oculi muscle). See the image below. Anatomy of frontalis, corrugator supercilii, procerus muscles, and other facial muscles. The medial fibers usually are more fibrous than the lateral fibers, thus requiring less toxin for paralysis. Avoid total paralysis of the frontalis, since (...) frown lines in a woman with a more horizontal-type brow. Anatomy Facial rhytides and folds in this area result from action of the depressor muscles (ie, corrugator supercilii, depressor supercilii, orbicularis oculi, procerus). See the image below. Anatomy of frontalis, corrugator supercilii, procerus muscles, and other facial muscles. The corrugator superciliaris, medial orbital portion of the orbicularis oculi, and more vertically oriented fibers of the depressor supercilii produce the vertical

2014 eMedicine Surgery

155. Craniofacial, Unilateral Cleft Lip Repair

. The primary muscle of the lip is the orbicularis oris, and it has two well-defined components: the deep (internal) and the superficial (external) components. The deep (internal) fibers run horizontally or circumferentially from commissure (modiolus) to commissure (modiolus) and functions as the primary sphincteric action for oral feeding. The superficial (external) fibers run obliquely, interdigitating with the other muscles of facial expression to terminate in the dermis. They provide subtle shades (...) of expression and precise movements of the lip for speech. The superficial fibers of the orbicularis decussate in the midline and insert into the skin lateral to the opposite philtral groove forming the philtral columns. The resulting philtral dimple centrally is depressed as there are no muscle fibers that directly insert into the dermis in the midline. The tubercle of the lip is shaped by the pars marginalis, the portion of the orbicularis along the vermilion forming the tubercle of the lip with eversion

2014 eMedicine Surgery

156. Facial Alloplastic Implants, Chin

to the labiomental fold, the groove that separates the lower lip from the chin. Several muscles cover the bony mandibular symphysis or chin. These include the mentalis, quadratus labii inferioris, triangularis, orbicularis oris, and some platysma fibers. Branches of the facial nerve innervate these muscles. The geniohyoid, genioglossus, and anterior bellies of the digastric muscle attach along the posterior and inferior surfaces of the mandibular symphysis (chin). The sensory innervation of the chin area is from

2014 eMedicine Surgery

157. Facelift, Subperiosteal

penetrate the fibers of the orbicularis oculi muscle. The frontalis muscle has multiple dermal attachments in the forehead area. The procerus muscle takes origin from the junction of the nasal bones and the upper lateral cartilages and inserts into the forehead skin. This muscle is directly beneath the skin and may cause a transverse crease at the junction of the nose and the forehead. The corrugator supercilii muscle arises from the medial end of the orbit. It runs laterally and superiorly (...) , interdigitating with the fibers of the orbicularis muscle. It has multiple insertions into the skin of the supraorbital region. This muscle causes vertical glabellar lines. The muscle lies deep to the frontalis muscle. The zygomaticus major muscle originates from the lateral part of the zygomatic body and inserts into the modiolus. The zygomaticus minor originates just medial to this. The zygomatic branch of the facial nerve runs superficial to the zygomaticus minor and deep to the zygomaticus major muscle

2014 eMedicine Surgery

158. Facelift, Platysmaplasty

to posterior, the muscle is anchored to the mentum and the inferior mandibular border and meets the orbicularis oris laterally and then the depressor anguli oris. Platysmal meshing with the depressor anguli oris contributes to the superficial muscular aponeurotic system (SMAS), highlighting its importance when attempting to reverse facial aging. Ventral rami of cervical nerves II-IV provide the tactile sense of the anterior neck. Tracking along the posterior surface of the sternocleidomastoid muscle

2014 eMedicine Surgery

159. Face Embryology

) Muscles - Muscles of mastication (ie, temporalis, masseter, pterygoids), mylohyoid, anterior belly of digastric, tensor tympani, and tensor veli palatini Skeleton - Maxillary cartilage (incus, alisphenoid), mandibular or Meckel cartilage (malleus), and arch dermal mesenchyme (maxilla, zygomatic, squamous portion of temporal bone, mandible) Pharyngeal arch II (hyoid) Facial nerve - Cranial nerve VII Artery - Stapedial Muscles - Muscles of facial expression (ie, orbicularis oculi, orbicularis oris

2014 eMedicine Surgery

160. Facelift, Composite

and, in contrast to muscles of the lower face, have direct bony insertions. Thus, the zygomaticus minor muscle arises from the region of the zygomaticomaxillary suture and passes downward and medial into the orbicularis oris muscle. The zygomaticus major arises further lateral on the zygomatic bone and runs to the angle of the mouth, blending with the orbicularis oris in the region of the modiolus. Freilinger et al described 4 layers of the facial musculature. [ ] The superficial layer is composed (...) of the depressor anguli oris, zygomaticus minor, and orbicularis oculi. The depressor labii inferioris, risorius, platysma, zygomaticus major, and levator labii superioris alaeque nasi constitute the second layer. The third layer is composed of the orbicularis oris and levator labii superioris. The mentalis, levator anguli oris, and buccinator constitute the fourth or deep layer. The first 3 layers are superficial to the plane of the facial nerve and therefore receive motor innervation from their deep surfaces

2014 eMedicine Surgery

To help you find the content you need quickly, you can filter your results via the categories on the right-hand side >>>>