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Orbicularis Oris

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1. Assessment of hypoxic lip training for lip incompetence by electromyographic analysis of the orbicularis oris muscle. (Abstract)

Assessment of hypoxic lip training for lip incompetence by electromyographic analysis of the orbicularis oris muscle. The aims of this study were to determine the difference in electromyography (EMG) of the orbicularis oris muscles between subjects with lip incompetence and lip competence and to elucidate the effectiveness of hypoxic lip training with EMG.Twenty-five subjects (14 men, 11 women; mean age, 24.5 ± 2.6 years) were divided into 2 groups by sealed lip ratio: 13 subjects with lip (...) incompetence (LI) and 12 subjects with lip competence (LC). Integral values of EMG for the orbicularis oris muscle during lip closing were estimated (baseline, T1). Then the subjects in the LI group performed the hypoxic lip training every day for 4 weeks. The EMG recordings were repeated during the training (T2), immediately after the training (T3), 4 weeks after the training (T4), and 8 weeks after the training (T5).In the LI group, the EMG values during lip closing were significantly higher than those

2018 American journal of orthodontics and dentofacial orthopedics

2. Effects of Coil Orientation on Motor Evoked Potentials From Orbicularis Oris Full Text available with Trip Pro

Effects of Coil Orientation on Motor Evoked Potentials From Orbicularis Oris This study aimed to characterize effects of coil orientation on the size of Motor Evoked Potentials (MEPs) from both sides of Orbicularis Oris (OO) and both First Dorsal Interosseous (FDI) muscles, following stimulation to left lip and left hand Primary Motor Cortex. Using a 70 mm figure-of-eight coil, we collected MEPs from eight different orientations while recording from contralateral and ipsilateral OO and FDI

2018 Frontiers in neuroscience

3. Effect of orbicularis oris muscle training on muscle strength and lip closure function in patients with stroke and swallowing disorder Full Text available with Trip Pro

Effect of orbicularis oris muscle training on muscle strength and lip closure function in patients with stroke and swallowing disorder [Purpose] We aimed to investigate the effect of resistance training of the orbicularis oris muscles on lip muscle strength and closure function in patients with swallowing disorder with facial palsy after stroke. [Participants and Methods] This study recruited 10 patients with swallowing disorder and facial palsy after stroke. All the participants received (...) orbicularis oris muscle training at an intensity of 70% of 1 repetition maximum by using an Iowa oral performance instrument. Muscle strength and lip closure function were evaluated after orbicularis oris muscle training. [Results] After the intervention, the orbicularis oris muscle strength showed a statistically significant increase from 20.5 ± 5.15 to 25.3 ± 4.2 kilopascal. Lip closure function showed a statistically significant improvement from 2.6 ± 1.5 to 1.2 ± 1.0. [Conclusion] This study

2018 Journal of physical therapy science

4. Comparison of EMG activity and blood flow during graded exertion in the orbicularis oris muscle of adult subjects with and without lip incompetence: a cross-sectional survey Full Text available with Trip Pro

Comparison of EMG activity and blood flow during graded exertion in the orbicularis oris muscle of adult subjects with and without lip incompetence: a cross-sectional survey The peri-oral muscles-including orbicularis oris-are critical in maintaining equilibrium in tooth position. Lip incompetence (LI) can thus be a factor in malocclusion. We therefore aimed to validate a technique to evaluate not only muscle activity via electromyography (EMG) but also muscle endurance and fatigue via blood (...) the experimental and control groups, notably in the rate of change in BF to the inferior orbicularis oris muscle under conditions of increasing load (graded exertion). Furthermore, the data suggested that the muscles in the control group undergo a more prolonged (and therefore presumably more complete) recovery than muscles in the experimental group. These factors of reduced BF and short recovery may combine to accelerate muscle fatigue and produce LI.The sample used here was controlled for malocclusion

2017 The European Journal of Orthodontics

5. Intramuscular hemangiomas on the masseter muscle and orbicularis oris muscle: a report of two cases Full Text available with Trip Pro

Intramuscular hemangiomas on the masseter muscle and orbicularis oris muscle: a report of two cases Intramuscular hemangioma (IMH) is a rare vascular disease involving skeletal muscle, comprising only 0.8% of hemangiomas. About 10% to 15% of IMHs occur in the head and neck region, mostly involving the masseter muscle. IMH occurs mostly in childhood, but is often not found until unexpected enlargement, pain, or cosmetic asymmetry occurs in adulthood. Several non-surgical treatments including (...) in the orbicularis oris muscle feeding from the superior labial artery, and the mass was excised surgically without embolization.

2017 Journal of the Korean Association of Oral and Maxillofacial Surgeons

6. The Visualization of the Functional Structure of the Crossing Fibers of the Orbicularis Oris Muscle Using Ultrasound Full Text available with Trip Pro

The Visualization of the Functional Structure of the Crossing Fibers of the Orbicularis Oris Muscle Using Ultrasound Supplemental Digital Content is available in the text.

2017 Plastic and Reconstructive Surgery Global Open

7. Differences in pharmacodynamic responses to rocuronium in normal or injured orbicularis oris are associated with expression of acetylcholine receptor subunits Full Text available with Trip Pro

Differences in pharmacodynamic responses to rocuronium in normal or injured orbicularis oris are associated with expression of acetylcholine receptor subunits Previous research has indicated that differences in sensitivities to muscle relaxants exist between facial nerve- and somatic nerve-innervated muscles. Here, we report that the 50% inhibitory concentration (IC50) values for rocuronium were significantly larger in the normal orbicularis oris than those in the gastrocnemius. Increased IC50 (...) values and reduced twitch tension were observed after facial nerve injury. The normal orbicularis oris had a smaller muscle fiber cross-sectional area (CSA) and a larger ratio of endplate surface area (ESA) to muscle fiber CSA (ESA/CSA), but no difference was found in the density of nicotinic acetylcholine receptor (nAChR) subunits on endplates between normal orbicularis oris and gastrocnemius. Expression of the nAChR α1, β1, δ, ε, and γ subunits increased significantly on the postsynaptic membranes

2017 Scientific reports

8. Orbicularis Oris

Orbicularis Oris Orbicularis Oris Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Orbicularis Oris Orbicularis Oris Aka: Orbicularis (...) Oris II. Anatomy Lewis (1918) Gray's Anatomy 20th ed (in at or ) Images: Related links to external sites (from Bing) These images are a random sampling from a Bing search on the term "Orbicularis Oris." Click on the image (or right click) to open the source website in a new browser window. Related Studies (from Trip Database) Ontology: Orbicularis oris muscle structure (C0224147) Concepts Body Part, Organ, or Organ Component ( T023 ) SnomedCT 66977000 English Musculus orbicularis oris , Orbicularis

2018 FP Notebook

9. Reconstruction of Philtrum Using Partial Splitting and Folding of Orbicularis Oris Muscle in Secondary Unilateral Cleft Lip. (Abstract)

Reconstruction of Philtrum Using Partial Splitting and Folding of Orbicularis Oris Muscle in Secondary Unilateral Cleft Lip. The reconstruction of the philtrum during unilateral cleft lip repair remains a surgical challenge. The authors introduce a modified surgical technique for the reconstruction of the philtrum that allows for both the deepening of the philtral dimple and augmentation of the philtral ridge.Between January of 2011 and June of 2012, 37 patients, including 22 male and 15 female (...) patients (mean age, 25.6 years), underwent secondary unilateral cleft lip repair. The philtrum was reconstructed by the partial splitting and folding of the orbicularis oris muscle. The aesthetic outcome of the philtrum and the scar after the operation was scored to evaluate the effectiveness of the procedure.The patients were evaluated for the appearance of the philtrum and scar at 12 to 18 months (mean, 14.6 months). Good symmetry of the bilateral philtral ridges was achieved in 35 of the 37 patients

2015 Plastic and reconstructive surgery

10. Immunohistochemical analysis of orbicularis oris muscle fiber distribution at the philtrum in healthy infants. (Abstract)

Immunohistochemical analysis of orbicularis oris muscle fiber distribution at the philtrum in healthy infants. To characterize the fiber-type distribution of the orbicularis oris muscle at the philtrum in healthy infants by immunohistochemistry and examine the relationship between orbicularis oris and philtrum structure.Samples of the upper lip were obtained from two infant cadavers. Serial sagittal sections were obtained at the midline of the philtral dimple, unilateral philtral ridge (...) , and the lateral side. Three sections from each site were prepared for immunohistochemical staining using myosin heavy chain fast fiber (MHCf) and myosin heavy chain slow fiber (MHCs) antibodies to determine the ratio of fast to slow skeletal muscle fibers.The ratio of fast to slow muscle fibers differed significantly among the superficial orbicularis oris muscle (98.30%:1.13%), deep pars peripheralis (95.30%:3.14%), and deep pars marginalis (91.31%:5.74%), with a significantly higher percentage of slow fibers

2015 International Journal of Pediatric Otorhinolaryngology

11. Application of ultrasound imaging of upper lip orbicularis oris muscle Full Text available with Trip Pro

Application of ultrasound imaging of upper lip orbicularis oris muscle In this study, we aim to understand the morphology and structure of upper lip orbicularis oris muscle, and to provide clinical evidence for evaluating the effect of repair operation in cleft lip. Subjects included 106 healthy people and 36 postoperative patients of unilateral cleft lip. The upper lip orbicularis oris muscle was scanned using ultrasound in natural closure and pout states. Our results showed (...) that the hierarchical structure of upper lip tissue was demonstrated clearly in ultrasonic images. After reconstruction of unilateral cleft lip, the left and right philtrum columns were still obviously asymmetric, their radian displayed clearly and showed better continuity. In the place of cleft lip side equivalent to philtrum columns, orbicularis oris muscle showed discontinuity and unclear hierarchical structure, which was replaced by hyperechoic scar tissue. The superficial layer would become thicker when

2015 International journal of clinical and experimental medicine

12. Mohs surgery spares orbicularis oris muscle optimising cosmetic and functional outcomes for tumours in the perioral location: a series of 407 cases and reconstructions by dermatologic surgeons. (Abstract)

Mohs surgery spares orbicularis oris muscle optimising cosmetic and functional outcomes for tumours in the perioral location: a series of 407 cases and reconstructions by dermatologic surgeons. 24974874 2015 09 21 2015 01 13 1365-2133 172 1 2015 Jan The British journal of dermatology Br. J. Dermatol. Mohs surgery spares the orbicularis oris muscle, optimizing cosmetic and functional outcomes for tumours in the perioral region: a series of 407 cases and reconstructions by dermatological surgeons

2014 British Journal of Dermatology

13. Assessment of cross-sectional thickness and activity of masseter, anterior temporalis and orbicularis oris muscles in oral submucous fibrosis patients and healthy controls: an ultrasonography and electromyography study Full Text available with Trip Pro

Assessment of cross-sectional thickness and activity of masseter, anterior temporalis and orbicularis oris muscles in oral submucous fibrosis patients and healthy controls: an ultrasonography and electromyography study Oral submucous fibrosis (OSMF) is an insidious chronic disease that is associated with significant functional morbidity and an increased risk for malignancy. It initially affects the lamina propria of the oral mucosa, and, as the disease progresses, it involves the submucosa (...) and deeper tissue, including muscles of the oral cavity, resulting in loss of fibroelasticity. OSMF is a pre-malignant condition mainly caused by areca nut chewing. The aim of this study was to find out the involvement of muscles of mastication and facial expression in patients with OSMF by assessing the cross-sectional thickness and activity of the masseter, anterior temporalis and orbicularis oris muscles by ultrasonography and electromyography and comparing with healthy controls and also to find out

2014 Dentomaxillofacial Radiology

14. A New Method for Creating a Definite Philtrum by the Flipping of an Orbicularis Oris Muscle Flap in a Patient with an Indistinct Philtrum Full Text available with Trip Pro

A New Method for Creating a Definite Philtrum by the Flipping of an Orbicularis Oris Muscle Flap in a Patient with an Indistinct Philtrum The philtrum plays a key role in the appearance of the upper lip and nostril sill. Therefore, construction of the philtrum is crucial for attaining a natural appearance of the upper lip. We used a flipping myoplasty of the orbicularis oris muscle on a patient with a flat philtrum in order to effectively reconstruct the philtral dimple and column. A 35-year (...) -old female presented to our department with the complaint of a flat upper lip. A superficial layer of the orbicularis oris muscle on the median aspect of the upper lip was vertically incised and elevated to a thickness of 2 mm. Both sides of the elevated muscle flap were then folded to the lateral sides so that the border could be sutured onto the outer portion of the orbicularis oris muscle. The patient was observed for one year postoperatively. Her philtrum deepened by 1.25 mm, with the central

2013 Archives of plastic surgery

15. Orbicularis Oris

Orbicularis Oris Orbicularis Oris Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Orbicularis Oris Orbicularis Oris Aka: Orbicularis (...) Oris II. Anatomy Lewis (1918) Gray's Anatomy 20th ed (in at or ) Images: Related links to external sites (from Bing) These images are a random sampling from a Bing search on the term "Orbicularis Oris." Click on the image (or right click) to open the source website in a new browser window. Related Studies (from Trip Database) Ontology: Orbicularis oris muscle structure (C0224147) Concepts Body Part, Organ, or Organ Component ( T023 ) SnomedCT 66977000 English Musculus orbicularis oris , Orbicularis

2015 FP Notebook

16. Assessment of neuromuscular block at the orbicularis oris, corrugator supercilii, and adductor pollicis muscles. (Abstract)

Assessment of neuromuscular block at the orbicularis oris, corrugator supercilii, and adductor pollicis muscles. We studied neuromuscular block at the orbicularis oris, corrugator supercilii, and adductor pollicis muscles in anesthetized patients.Fifty-four adult patients undergoing air-oxygen-sevoflurane-fentanyl and epidural anesthesia were randomly divided into orbicularis oris, corrugator supercilii, and adductor pollicis groups of 18 patients each. In the three groups, the degree (...) of neuromuscular block caused by rocuronium 0.6 mg/kg was monitored at the orbicularis oris, corrugator supercilii, and adductor pollicis muscles acceleromyographically.Onset of neuromuscular block did not significantly differ among the three groups [157 ± 60, 186 ± 73, and 148 ± 45 s; mean ± standard deviation (SD)]. Minimum value of 1st stimulation in train-of-four (T1)/control at the corrugator supercilii group was significantly higher than in the orbicularis oris and adductor pollicis groups (0.108 ± 0.066

2012 Journal of anesthesia Controlled trial quality: uncertain

17. Acceleromyographic monitoring of neuromuscular block over the orbicularis oris muscle in anesthetized patients receiving vecuronium. (Abstract)

Acceleromyographic monitoring of neuromuscular block over the orbicularis oris muscle in anesthetized patients receiving vecuronium. To evaluate the level of neuromuscular block acceleromyographically over the orbicularis oris muscle.Prospective, randomized, controlled study.Operating room of a university-affiliated hospital.36 adult, ASA physical status I and II women scheduled for mastectomy with air-oxygen-isoflurane-fentanyl anesthesia.Patients were randomized to two groups (...) . In the orbicularis oris group (n=18), the facial nerve was stimulated and movement of the orbicularis oris muscle was measured acceleromyographically. In the control group (n=18), adduction of the thumb was quantified mechanically.Onset and recovery of neuromuscular block caused by vecuronium 0.1 mg/kg were compared between the groups.Time to onset of neuromuscular block in the orbicularis oris group was significantly shorter than in the control group (176 + or - 52 vs. 220 + or - 34 sec, mean + or - SD; P

2010 Journal of clinical anesthesia Controlled trial quality: uncertain

18. Bell's palsy

carried out [ ]. Advice on eating This recommendation is based on expert opinion in a review article on the basis that these measures minimise the risk of oral incontinence (from loss of sphincter function of the orbicularis oris) and damage to the inside of the mouth from chewing [ ]. Offering written information This recommendation is pragmatic, and is based on what CKS considers to be good clinical practice. Treatment How should I manage Bell's palsy? For people presenting within 72 hours

2019 NICE Clinical Knowledge Summaries

19. Lip and Oral Cavity Cancer Treatment (Adult) (PDQ®): Health Professional Version

mucosa in patients with recurrent disease, and invasion of muscle (i.e., orbicularis oris). Standard treatment options: Radiation therapy alone or neck dissection: N1 (0–2 cm). N2b or N3; all nodes smaller than 2 cm. (A combined surgical and radiation therapy approach should also be considered.) Radiation therapy and neck dissection: N1 (2–3 cm), N2a, N3. Surgery followed by radiation therapy, indications for which are as follows: Multiple positive nodes. Contralateral subclinical metastases (...) and infiltrating. Treatment options for management of lymph nodes: [ ] Patients with advanced lesions should have elective lymph node radiation therapy or node dissection. The risk of metastases to lymph nodes is increased by high-grade histology, large lesions, spread involving the wet mucosa of the lip or the buccal mucosa in patients with recurrent disease, and invasion of muscle (orbicularis oris). Standard treatment options: Radiation therapy alone or neck dissection: N1 (0–2 cm). N2b or N3; all nodes

2018 PDQ - NCI's Comprehensive Cancer Database

20. A surgical and anatomo-histological study on Transoral Endoscopic Thyroidectomy Vestibular Approach (TOETVA). (Abstract)

with dissections.Mimetic muscles associated with median (MT) and lateral trocars (LT) are orbicularis oris, mentalis, depressor anguli oris, depressor labii inferioris and platysma muscles. Trocars affect mimetic muscles in the perioral, chin and submental regions in different ways. The risk of mental nerve injury by MT is low. LT pass through the DLI muscle. The transmission of LT to the subplatysmal plane in the submental regions can be in two different ways. The arterial injury risk is higher with LT than

2019 Surgical endoscopy

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