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https://www.readbyqxmd.com/read/29339001/does-the-surgical-approach-for-treating-mandibular-condylar-fractures-affect-the-rate-of-seventh-cranial-nerve-injuries-a-systematic-review-and-meta-analysis-based-on-a-new-classification-for-surgical-approaches
#1
Essam Ahmed Al-Moraissi, Aurélien Louvrier, Giacomo Colletti, Larry M Wolford, Federico Biglioli, Marwa Ragaey, Christophe Meyer, Edward Ellis
PURPOSE: The purpose of this study was to determine the rate of facial nerve injury (FNI) when performing (ORIF) of mandibular condylar fractures by different surgical approaches. MATERIALS AND METHODS: A systematic review and meta-analysis were performed that included several databases with specific keywords, a reference search, and a manual search for suitable articles. The inclusion criteria were all clinical trials, with the aim of assessing the rate of facial nerve injuries when (ORIF) of mandibular condylar fractures was performed using different surgical approaches...
November 14, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29332113/changes-in-the-temporomandibular-joint-disc-and-temporal-and-masseter-muscles-secondary-to-bruxism-in-turkish-patients
#2
Hasan Garip, Sukran Tufekcioglu, Emre Kaya
To analyze the relationships between temporalis and masseter muscle hypertrophy and temporomandibular joint (TMJ) disc displacement in patients with severe bruxism using magnetic resonance imaging (MRI). Methods: This retrospective study included 100 patients with severe bruxism, referred to the Department of Oral and Maxillofacial Surgery, University of Marmara and Istanbul Medipol University, Istanbul, Turkey, between January 2015 and December 2016. Patients underwent TMJ MRI with a 1.5-T system in open and closed mouth positions...
January 2018: Saudi Medical Journal
https://www.readbyqxmd.com/read/29330952/jaw-muscle-fiber-architecture-and-leverage-in-the-hard-object-feeding-sooty-mangabey-are-not-structured-to-facilitate-relatively-large-bite-forces-compared-to-other-papionins
#3
Andrea B Taylor, Claire E Terhune, Maxx Toler, Megan Holmes, Callum F Ross, Christopher J Vinyard
Numerous studies have sought to link craniofacial morphology with behavioral ecology in primates. Extant hard-object feeders have been of particular interest because of their potential to inform our understanding about the diets of early fossil hominins. Sooty mangabeys (Cercocebus atys) are hard-object feeders that frequently generate what have been described as audibly powerful bites at wide jaw gapes to process materially stiff and hard seeds. We address the hypothesis that sooty mangabeys have features of the masticatory apparatus that facilitate this feeding behavior by comparing fiber architecture and leverage of the masseter and temporalis muscles between sooty mangabeys and three papionin primates that do not specialize on hard objects...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330950/comparative-anatomy-of-bat-jaw-musculature-via-diffusible-iodine-based-contrast-enhanced-computed-tomography
#4
Sharlene E Santana
Noctilionoid bats exhibit an extraordinary array of cranial specializations that match diverse diets, including variation in jaw musculature physiological cross-sectional areas (PCSA), lever arms, and relative contribution to bite force. Although previous research in this group has linked variation in skull shape and muscle mechanics to biting performance, there are still important gaps about the anatomical underpinnings of noctilionoid dietary adaptations, including the degree of compartmentalization of the jaw musculature, and whether and how muscle attachment sites have evolved across noctilionoid species that specialize on derived diets...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330948/inferring-the-diets-of-extinct-giant-lemurs-from-osteological-correlates-of-muscle-dimensions
#5
Jonathan M G Perry
The jaw adductor muscles of extinct mammals are often reconstructed to elucidate paleoecological relationships and to make broad comparisons among taxa. Muscle lever arms, bite load arms, muscle dimensions, and gape are often also reconstructed to better understand feeding. Several different approaches to these and related goals are discussed here. A protocol for reconstructing muscle dimensions and bite force using biomechanically informative skull measurements and osteological proxies of muscle dimensions is described and applied to a case study of subfossil Malagasy lemurs...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330612/analysis-of-the-stomatognathic-system-of-children-according-orthodontic-treatment-needs
#6
Simone Cecílio Hallak Regalo, Bárbara de Lima Lucas, Kranya Victoria Díaz-Serrano, Nicolly Parente Ribeiro Frota, Isabela Hallak Regalo, Mariângela Salles Pereira Nassar, Mariah Acioli Righetti, Lígia Franco Oliveira, Lígia Maria Napolitano Gonçalves, Selma Siéssere, Marcelo Palinkas
PURPOSE: The present study evaluated electromyographic activity (EMG), masticatory performance, and tongue strength in children without and with orthodontic treatment needs. PATIENTS AND METHODS: A total of 90 children were screened and divided into the following groups: Group I (no treatment needed; mean age: 8.00 ± 0.43 years; n = 26), Group II (few malocclusions, treatment needed; mean age: 8.89 ± 0.43 years; n = 28), and Group III (slight-to-borderline treatment needed; mean age: 8...
January 12, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/29327673/evaluation-of-the-electromyographic-fatigue-of-the-masseter-and-temporalis-muscles-in-individuals-with-osteoporosis
#7
Veridiana Wanshi Arnoni, Paulo Batista de Vasconcelos, Luiz Gustavo de Sousa, Bruno Ferreira, Marcelo Palinkas, Mariah Acioli Righetti, Gabriel Pádua da Silva, Solange Aparecida Caldeira Monteiro, Simone Cecilio Hallak Regalo, Selma Siéssere
Objectives The objective of this study was to evaluate the electromyographic fatigue of the masseter and temporalis muscles in individuals with and without osteoporosis. Methods Median frequency of the initial, mid, and final periods of the electromyographic signal in the 33 subjects with osteoporosis (OG) and 33 subjects without osteoporosis [control (CG)] was analyzed. Results OG showed a decrease in median frequency along the electromyographic signal, with a significant difference for the right masseter: initial vs...
January 12, 2018: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29327231/loading-of-the-condylar-cartilage-can-rescue-the-effects-of-botox-on-tmj
#8
Eliane H Dutra, Mara H O'Brien, Candice Logan, Aditya Tadinada, Ravindra Nanda, Sumit Yadav
The purpose of this study is to evaluate whether the effects of botulinum neurotoxin (botox) injection into the masseter in the mandibular condylar cartilage (MCC) and subchondral bone could be rescued by compressive loading of the temporomandibular joint (TMJ). Twenty-four 6-week-old female mice (C57BL/6J) were used. Mice were divided in three groups: (1) Botox (n = 8); (2) Botox plus loading (n = 8); (3) Pure control (n = 8). Bone labels (3 and 1 day before sacrifice) and the proliferation marker EdU (2 and 1 day before sacrifice) were intraperitoneally injected into all groups of mice...
January 11, 2018: Calcified Tissue International
https://www.readbyqxmd.com/read/29289710/early-molecular-response-and-microanatomical-changes-in-the-masseter-muscle-and-mandibular-head-after-botulinum-toxin-intervention-in-adult-mice
#9
Julián Balanta-Melo, Viviana Toro-Ibacache, Maria Angélica Torres-Quintana, Kornelius Kupczik, Carolina Vega, Camilo Morales, Nadia Hernández-Moya, Manuel Arias-Calderón, Carolina Beato, Sonja Buvinic
BACKGROUND: Masseter muscle paralysis induced by botulinum toxin type A (BoNTA) evokes subchondral bone loss in mandibular heads of adult rats and growing mice after 4 weeks. However, the primary cellular and molecular events leading to altered bone remodeling remain unexplored. Thus, the aim of the current work has been to assess the molecular response that precedes the early microanatomical changes in the masseter muscle and subchondral bone of the mandibular head in adult mice after BoNTA intervention...
December 28, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29280180/comparison-of-the-outcomes-of-dynamic-static-tests-and-palpation-tests-in-tmd-pain-patients
#10
M Osiewicz, D Manfredini, B W Loster, M K A van Selms, F Lobbezoo
BACKGROUND: In addition to palpation tests, dynamic/static tests have been proposed to complement temporomandibular disorders (TMD) patients' evaluation in the clinical setting. OBJECTIVE: The aim of this study was to assess the intra- and inter-observer reliability of the palpation tests and of the dynamic/static tests, and to determine whether those tests would yield comparable outcomes in terms of pain diagnoses. METHODS: Ninety-eight (N=98) consecutive adult patients were examined during two clinical sessions by two independent examiners, based on muscle and joint palpation techniques described in the Research Diagnostic Criteria of Temporomandibular Disorders (RDC/TMD)...
December 27, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29274163/masseter-and-temporalis-muscle-electromyography-findings-after-lower-third-molar-extraction
#11
J-M Buesa-Barez, M Martin-Ares, N Martinez-Rodriguez, C Barona-Dorado, J Sanz-Alonso, J Cortes-Breton-Brinkmann, J Martinez-Gonzalez
BACKGROUND: The main clinical application of electromyography is to detect abnormalities in muscle function, to assess muscle activity for purposes of recruitment, and in the biomechanics of movement. OBJECTIVES: To analyze electromyography (EMG) findings for masticatory muscles during chewing following surgical extraction of lower third molars, and to determine any correlation between pain, inflammation, trismus, and the EMG data registered. MATERIAL AND METHODS: This prospective study included 31 patients...
December 23, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29250900/complications-of-botulinum-toxin-injection-for-masseter-hypertrophy-incidence-rate-from-2036-treatments-and-summary-of-causes-and-preventions
#12
Hsien-Li Peter Peng, Jui-Hui Peng
BACKGROUND: Masseter hypertrophy is a common, prominent feature in many Asian patients, and correction procedures are often requested for esthetic reasons. Toxin masseter injections have a high efficacy and safety profile, but the risks of a variety of side effects or complications remain. OBJECTIVES: The categorization of various complications was based on etiology, with a presentation of the author's own incidence rates for consideration and comparison. METHODS: Six hundred and eighty patients received a total of 2036 sessions of toxin injection for masseter hypertrophy from 2011 to 2016, and complications or complaints were recorded through follow-up on a by-treatment basis...
December 18, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29249414/correlation-between-severity-of-temporomandibular-disorder-pain-intensity-and-pressure-pain-threshold
#13
Carolina Marciela Herpich, Cid André Fidelis de Paula Gomes, Almir Vieira Dibai-Filho, Fabiano Politti, Cesário da Silva Souza, Daniela Aparecida Biasotto-Gonzalez
OBJECTIVE: The aim of the present study was to correlate the severity of temporomandibular disorder (TMD) with the pressure pain threshold over the temporomandibular joint and masticatory muscles. METHODS: A blind, cross-sectional study was conducted involving 60 women ages 18 to 40 years with a diagnosis of myogenous TMD. Evaluations were performed using the Fonseca Anamnestic Index (FAI), the visual analogue scale, and algometry over the temporomandibular joint and masticatory muscles...
December 14, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/29246168/trichinella-spp-biomass-has-increased-in-raccoon-dogs-nyctereutes-procyonoides-and-red-foxes-vulpes-vulpes-in-estonia
#14
Age Kärssin, Liidia Häkkinen, Enel Niin, Katrin Peik, Annika Vilem, Pikka Jokelainen, Brian Lassen
BACKGROUND: Raccoon dogs and red foxes are well-adapted hosts for Trichinella spp. The aims of this study were to estimate Trichinella infection prevalence and biomass and to investigate which Trichinella species circulated in these indicator hosts in Estonia. METHODS: From material collected for evaluating the effectiveness of oral vaccination program for rabies eradication in wildlife, samples from 113 raccoon dogs and 87 red foxes were included in this study...
December 16, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29244891/the-effects-of-experimental-temporalis-muscle-pain-on-jaw-muscle-electromyographic-activity-during-jaw-movements-and-relationships-with-some-psychological-variables
#15
Tantry Maulina, Magda Amhamed, Terry Whittle, John Gal, Rahena Akhter, Greg M Murray
AIMS: To determine if the effects of experimental temporalis muscle pain on jaw muscle activity vary with the jaw task performed, jaw displacement magnitude, participant being studied, and with psychological measures. METHODS: Jaw movement was tracked, and electromyographic (EMG) activity was recorded from the masseter and anterior temporalis and digastric muscles in 14 asymptomatic participants during standardized opening/closing jaw movement, free chewing, and standardized chewing tasks...
December 15, 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29243682/orthodontic-surgical-treatment-electromyographic-and-kinesiographic-evaluation-in-follow-up-period-experimental-study
#16
Lucia Giannini, Cinzia Maspero, Guido Galbiati, Laima Kairyte, Federica Zanoni, Giampietro Farronato
INTRODUCTION: The aim of this study was to investigate muscular function and mandibular kinesiology of patients undergoing orthodontic-surgical treatment by electromyography and kinesiography. Electromyographic evaluation is essential to estimate masticatory forces in patients undergoing combined surgical-orthodontic treatment. MATERIALS AND METHODS: 60 patients referred for orthodontic surgical treatment were included in the study, 43 patients presented a class III while 17 presented a class II...
2017: Stomatologija
https://www.readbyqxmd.com/read/29230579/prevalence-of-cysticercosis-in-estonian-pigs-and-cattle
#17
Elisabeth Dorbek-Kolin, Tuuli Åhlberg, Lea Tummeleht, Dennis Tappe, Maria Vang Johansen, Brian Lassen
Taenia solium has been ranked as the most important foodborne parasite and Taenia saginata as the most commonly found human Taenia tapeworm worldwide. The last official reports of taeniosis from Estonia were in 2003 for T. solium and 2012 for T. saginata. By law, all animal cases of cysticercosis must be registered and reported when found. Our aim was to estimate the prevalence of cysticercosis in Estonia caused by T. solium in pigs and T. saginata in cattle. The four slaughterhouses participating in the study slaughter between them approximately 80% of pigs and cattle in Estonia annually...
December 11, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29222560/masseteric-nerve-transfer-for-facial-nerve-paralysis-a-systematic-review-and-meta-analysis
#18
Alexander W Murphey, William B Clinkscales, Samuel L Oyer
Importance: A review of the role of masseteric nerve transfer is needed to guide its use in facial reanimation. Objective: To systematically review the available literature, and, when applicable, analyze the combined outcomes of masseteric nerve transfer to better define its role in reanimation and to guide further research. Data Sources: Two independent researchers conducted the review using PubMed-NCBI and Scopus literature databases for studies on masseteric nerve transfer for facial nerve paralysis...
December 7, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/29216723/effect-of-aquaporin-1-and-4-on-masticatory-muscles-degeneration-as-a-result-of-aging
#19
M K Tumer, M Demir, M Cicek
OBJECTIVE: The changes in the mouth structures due to aging cause some structural and functional changes by affecting masticatory muscles over time. The aim of this study was to evaluate the aging-related histopathologic changes and immunohistochemically assessed aquaporin 1 and 4 expressions on masseter and temporal muscles. MATERIAL AND METHODS: 14 Balb/c white mice (50-80 g) were used in this study. Group I consisted of young animals (2-month-individuals) (n = 7) and Group II consisted of older animals (18-month-old) (n = 7)...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29209900/effect-of-testosterone-on-trpv1-expression-in-a-model-of-orofacial-myositis-pain-in-the-rat
#20
Xiaofeng Bai, Xia Zhang, Qing Zhou
Recent clinical studies have revealed sex differences in response to transient receptor potential vanilloid 1 (TRPV1) agonist-induced pain. However, the mechanism of these differences in TRPV1-related chronic pain remains unclear. In the present study, we investigate the effects of inflammation and gonadal hormones on TRPV1 expression in trigeminal ganglia. Inflammatory pain was modeled by injecting complete Freund's adjuvant (CFA) into the left masseter muscle in rats. TRPV1 mRNA and protein levels in the trigeminal ganglia of male and female rats following CFA injection were assessed...
December 5, 2017: Journal of Molecular Neuroscience: MN
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