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Facial muscles

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https://www.readbyqxmd.com/read/28319528/postburn-microstomia-prevention-using-an-appliance-providing-simultaneous-horizontal-and-vertical-adjustable-forces
#1
Gregory S Antonarakis, Sandra Fastlicht, Taras Masnyi, Bryan Tompson
Microstomia, an abnormally small oral orifice, is a complication of perioral facial burns. In this case, contraction of the circumoral tissues and hypotonia of the musculature is responsible for this microstomia, which can produce aesthetic and functional impairment with eating, swallowing, communication (speech and facial expressions), compromised dental care and maintenance due to limited oral access, social interactions, and psychological well-being. Conservative management involves providing physical resistance to scar contracture, with opposing horizontal and vertical circumoral forces by means of appliances that aim to stretch the commissures and fibrotic muscles...
March 13, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28314397/effectiveness-of-botulinum-toxin-type-a-for-the-treatment-of-chronic-masticatory-myofascial-pain-a-case-series
#2
Jason S Baker, Patrick J Nolan
BACKGROUND: The aim of this study is to evaluate the effectiveness of botulinum toxin type A (BTX-A) for the treatment of chronic masticatory myofascial pain (MMP) over 12 months and to test a standardized protocol. METHODS: This is a prospective case series of consecutive adult patients with chronic MMP treated with injection of BTX-A into the bilateral temporalis and masseter muscles. The authors used the same anatomic landmarks and dosage and followed each patient for 12 months...
January 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28299356/an-exome-sequencing-study-of-moebius-syndrome-including-atypical-cases-reveals-an-individual-with-cfeom3a-and-a-tubb3-mutation
#3
Ronak M Patel, David Liu, Claudia Gonzaga-Jauregui, Shalini Jhangiani, James T Lu, V Reid Sutton, Susan D Fernbach, Mahshid Azamian, Lisa White, Jane C Edmond, Evelyn A Paysse, John W Belmont, Donna Muzny, James R Lupski, Richard A Gibbs, Richard Alan Lewis, Brendan H Lee, Seema R Lalani, Philippe M Campeau
Moebius syndrome is characterized by congenital unilateral or bilateral facial and abducens nerve palsies (sixth and seventh cranial nerves) causing facial weakness, feeding difficulties, and restricted ocular movements. Abnormalities of the chest wall such as Poland anomaly and variable limb defects are frequently associated with this syndrome. Most cases are isolated; however, rare families with autosomal dominant transmission with incomplete penetrance and variable expressivity have been described. The genetic basis of this condition remains unknown...
March 2017: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/28299269/temporalis-pull-through-vs-fascia-lata-augmentation-in-facial-reanimation-for-facial-paralysis
#4
S M Balaji
OBJECTIVES: Surgical rehabilitation of facial palsy is challenging as each case is unique and success rate is often unpredictable. In one technique, temporalis is elevated from origin preserving vessels, and this elevation increases the length which is tunneled into buccal tissues (pull-through technique, Group A). In the other technique, a harvested fascia lata is attached to temporalis after a coronoidectomy release and the fascia lata is attached to the modiolus (Group B). The aim of this study is to compare the two different surgical techniques...
July 2016: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28297090/the-mandibular-muscles-in-contemporary-orthodontic-practice-a-review
#5
M G Woods
It is widely accepted that all dentists should have a thorough understanding of the muscles involved in moving or stabilizing the mandible. However, there is still much discussion regarding the influence of the mandibular muscles on normal facial growth and dental development, as well as on orthodontic treatment and post-treatment stability. Potential patients with different underlying vertical muscle patterns will have differences in the expected directions of future mandibular growth, lateral profile shape, facial and arch widths and vertical occlusal relationships...
March 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28293537/a-rare-case-of-concomitant-sicca-keratopathy-and-ipsilateral-central-facial-palsy-in-wallenberg-s-dorsolateral-medullary-syndrome
#6
Deborah De Bruyn, Elisabeth Van Aken, Kristien Herman
Objective: To describe a patient with a right-sided supranuclear facial palsy and concomitant sicca keratopathy of the right eye following right-sided dorsolateral medullary infarction. Methods: Our patient underwent a complete ophthalmologic and neurologic examination including biomicroscopy, fundus examination, cranial nerve examination, Shirmer I test, and magnetic resonance imaging of the brain. Results: A 61-year-old woman presented in emergency with a central facial nerve palsy on the right side and truncal ataxia...
2017: GMS Ophthalmology Cases
https://www.readbyqxmd.com/read/28293514/platysma-motor-nerve-transfer-for-restoring-marginal-mandibular-nerve-function
#7
Andres Rodriguez-Lorenzo, David Jensson, Wolfgang J Weninger, Melanie Schmid, Stefan Meng, Chieh-Han John Tzou
BACKGROUND: Injuries of the marginal mandibular nerve (MMN) of the facial nerve result in paralysis of the lower lip muscle depressors and an asymmetrical smile. Nerve reconstruction, when possible, is the method of choice; however, in cases of long nerve gaps or delayed nerve reconstruction, conventional nerve repairs may be difficult to perform or may provide suboptimal outcomes. Herein, we investigate the anatomical technical feasibility of transfer of the platysma motor nerve (PMN) to the MMN for restoration of lower lip function, and we present a clinical case where this nerve transfer was successfully performed...
December 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28286397/perforator-peroneal-artery-flap-for-tongue-reconstruction
#8
Shubhra Chauhan, Sachin Chavre, Naveen Hedne Chandrashekar, Naveen B S
INTRODUCTION: Reconstruction has evolved long way from primary closure to flaps. As time evolved, better understanding of vascularity of flap has led to the development of innovative reconstructive techniques. These flaps can be raised from various parts of the body for reconstruction and have shown least donor site morbidity. We use one such peroneal artery perforator flap for tongue reconstruction with advantage of thin pliable flap, minimal donor site morbidity and hidden scar. MATERIALS AND METHODS: Our patient 57yrs old lady underwent wide local excision with selective neck dissection...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28286393/versatility-of-fibula-free-flap-in-reconstruction-of-facial-defects-a-center-study
#9
Sunil S Shroff, Sanjiv C Nair, Anjan Shah, Balasubramanya Kumar
PURPOSE: To study a series of cases where vascularised fibula flap was used in various combinations of bone with muscle and skin along with its modifications for reconstruction of simple and composite defects of the facial region. PATIENTS AND METHODS: The investigators designed a retrospective study composed of patients with any pathology or defect who underwent reconstruction of maxilla or mandible with vascularised fibula free flap from 2009 to 2013. All patients were evaluated for age, gender, location and type of defect, incorporation of adjoining skin paddle and muscle, number of fibula osteotomies, ischaemia time, anticoagulant regimen, length of hospital stay, flap failure rate, dental implant rehabilitation...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28282555/beauty-in-the-eye-of-the-beholder-using-facial-electromyography-to-examine-the-association-between-eating-disorder-symptoms-and-perceptions-of-emaciation-among-undergraduate-women
#10
Dorian R Dodd, Elizabeth A Velkoff, Lauren N Forrest, Lauren M Fussner, April Smith
Thin-ideal internalization, drive for thinness, and over-evaluation of the importance of thinness are associated with eating disorders (EDs). However, little research has examined to what extent perceptions of emaciation are also associated with ED symptoms. In the present study, 80 undergraduate women self-reported on ED symptomatology and perceptions of emaciated, thin, and overweight female bodies. While participants viewed images of these different body types, facial electromyography was used to measure activation of facial muscles associated with disgust reactions...
March 7, 2017: Body Image
https://www.readbyqxmd.com/read/28282451/c-tactile-afferent-stimulating-touch-carries-a-positive-affective-value
#11
Ralph Pawling, Peter R Cannon, Francis P McGlone, Susannah C Walker
The rewarding sensation of touch in affiliative interactions is hypothesized to be underpinned by a specialized system of nerve fibers called C-Tactile afferents (CTs), which respond optimally to slowly moving, gentle touch, typical of a caress. However, empirical evidence to support the theory that CTs encode socially relevant, rewarding tactile information in humans is currently limited. While in healthy participants, touch applied at CT optimal velocities (1-10cm/sec) is reliably rated as subjectively pleasant, neuronopathy patients lacking large myelinated afferents, but with intact C-fibres, report that the conscious sensation elicited by stimulation of CTs is rather vague...
2017: PloS One
https://www.readbyqxmd.com/read/28280662/avoiding-facial-incisions-with-midface-free-tissue-transfer
#12
Mark W Stalder, Michael Sosin, Leo J Urbinelli, James L Mayo, Amir H Dorafshar, Hugo St Hilaire, Daniel E Borsuk, Eduardo D Rodriguez
BACKGROUND: We have adopted an intraoral microsurgical anastomosis to the facial vessels to eliminate the need for any visible facial incisions. METHODS: Cadaveric dissection was used to demonstrate accessibility of the facial artery and vein through an intraoral approach. Additionally, 5 patients underwent free tissue transfer for reconstruction of major defects of the midface through an intraoral, transmucosal approach, obviating the need for visible skin incisions...
February 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28272583/-degloving-injury-of-the-mandible
#13
M H J Hollander, J Schortinghuis
A 13-year-old girl presented at an emergency department after she had fallen on her face when she fell from her horse. During physical examination no apparent extraoral injury was visible, such as lacerations, bruises or oedema. However, intraoral examination revealed extensive laceration of soft tissue. The diagnosis was a degloving injury of the mandible, which is very rare. The treatment consisted of debridement, suturing of the mentalis muscle, the approximate closing of the mucosa, accompanied by treatment with broad-spectrum antibiotics...
March 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/28268652/a-survey-on-the-feasibility-of-surface-emg-in-facial-pacing
#14
Ville Rantanen, Mirja Ilves, Antti Vehkaoja, Anton Kontunen, Jani Lylykangas, Eeva Makela, Markus Rautiainen, Veikko Surakka, Jukka Lekkala
A survey on the feasibility of surface electromyography (EMG) measurements in facial pacing is presented. Pacing for unilateral facial paralysis consists of the measurement of activity from the healthy side of the face and functional electrical stimulation to reanimate the paralyzed one. The goal of this study is to evaluate the feasibility of surface EMG as a measurement method to detect muscle activations and to determine their intensities. Prior work is discussed, and results from experiments where 12 participants carried out a set of facial movements are presented...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268051/distal-myopathy-with-adssl1-mutations-in-korean-patients
#15
Hyung Jun Park, Ha Young Shin, Sungjun Kim, Se Hoon Kim, Yunbeom Lee, Jung Hwan Lee, Ji-Man Hong, Seung Min Kim, Kee Duk Park, Byung-Ok Choi, Ji Hyun Lee, Young-Chul Choi
To understand the characteristics of ADSSL1 myopathy, we investigated the clinical manifestation in Korean patients with ADSSL1 mutations. We developed a targeted panel of 16 distal-myopathy genes and recruited a total of 12 patients with genetically undetermined distal myopathy. We found four (33%) with ADSSL1 mutations and one (8%) with GNE mutations. ADSSL1 mutations consisted of c.910G>A, c.1048delA and c.1220T>C mutations. Patients with ADSSL1 mutations demonstrated distal muscle weakness in adolescence, followed by quadriceps muscle weakness in the early 30s...
February 14, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28264555/the-effect-of-insulin-like-growth-factor-1-on-recovery-of-facial-nerve-crush-injury
#16
Asuman Feda Bayrak, Yuksel Olgun, Ayla Ozbakan, Safiye Aktas, Can Ahmet Kulan, Gonca Kamaci, Emine Demir, Osman Yilmaz, Levent Olgun
Objectives: The aim of this study is to investigate the efficacy of locally applied insulin-like growth factor 1 (IGF-1) on the recovery of facial nerve functions after crush injury in a rabbit model. Methods: The rabbits were randomly assigned into three groups. Group 1 consisted of the rabbits with crush injury alone; group 2, the animals applied saline solution onto the crushed facial nerve and group 3, IGF-1 implemented to the nerve in the same manner. Facial nerve injury was first electrophysiologically studied on 10th and 42nd days of the procedure...
March 8, 2017: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/28263638/training-the-face-strategic-practice-as-a-means-to-regulate-affect-induced-facial-muscle-contractions
#17
Julia Kozlik, Roland Neumann
Recently, it has been shown that the activation of affect-induced emotional reactions (i.e., manual approach/avoidance movements) can be modulated by strategic practice. The present study explored whether this modulation would also apply to affect-induced facial muscle contractions, which have been discussed to be relatively inflexibly linked to the processing of affective stimuli. In 2 experiments, participants conducted 2 different categorization tasks on positive and negative pictures of facial expressions (Experiment 1) or emotional scenes (Experiment 2) which were randomly framed in different colors...
March 6, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28262468/congenital-myopathy-with-corona-fibres-selective-muscle-atrophy-and-craniosynostosis-associated-with-novel-recessive-mutations-in-scn4a
#18
Hernan D Gonorazky, Christian R Marshall, Maryam Al-Murshed, Lili-Naz Hazrati, Michael G Thor, Michael G Hanna, Roope Männikkö, Peter N Ray, Grace Yoon
We describe two brothers with lower facial weakness, highly arched palate, scaphocephaly due to synostosis of the sagittal and metopic sutures, axial hypotonia, proximal muscle weakness, and mild scoliosis. The muscle MRI of the younger sibling revealed a selective pattern of atrophy of the gluteus maximus, adductor magnus and soleus muscles. Muscle biopsy of the younger sibling revealed myofibres with internalized nuclei, myofibrillar disarray, and "corona" fibres. Both affected siblings were found to be compound heterozygous for c...
February 8, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28256692/-orofacial-alterations-and-surface-electromyography-in-neurodevelopmental-disorders
#19
V Rosell-Clari
INTRODUCTION: Surface electromyography has become a widely used technique for measuring the activity of different muscle groups. Although the reliability and validity of the technique are discussed, there is an important body of scientific literature that defends the use of this technique. AIM: To present through a case study, the two basic uses of surface electromyography: the measurement of orofacial muscular activity and use it as biofeedback modulator of the muscular activity itself...
February 24, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28254601/electromyographically-guided-nerve-combing-makes-microvascular-decompression-more-successful-in-hemifacial-spasm-with-persistent-abnormal-muscle-response
#20
Xin Zhang, Jin Zhu, Yin-Da Tang, Hua Zhao, Ting-Ting Ying, Yan Yuan, Shi-Ting Li
BACKGROUND: Microvascular decompression (MVD) of the facial nerve monitored intra-operatively by abnormal muscle response (AMR) activity is a common treatment for hemifacial spasm. However, AMR frequently persists after MVD, for which electromyographically (EMG)-guided nerve combing is sometimes recommended. Because no research regarding the success of EMG-guided nerve combing has been published, we compared the effectiveness of nerve combing after MVD with simple MVD in cases including persistent AMR...
February 27, 2017: World Neurosurgery
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