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https://www.readbyqxmd.com/read/29782040/two-repetitive-bouts-of-intense-eccentric-concentric-jaw-exercises-reduce-experimental-muscle-pain-in-healthy-subjects
#1
Rosaria Bucci, Frank Lobbezoo, Ambrosina Michelotti, Michail Koutris
BACKGROUND: High-intensity eccentric-concentric contractions of the jaw-closing muscles induce muscle soreness, fatigue, and functional impairment of the jaw, resembling the symptoms of myalgia, according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). However, it is claimed that repetition of similar exercises can minimize these detrimental effects. OBJECTIVE: This study aimed to evaluate the response of jaw closing muscles following two series of intense eccentric-concentric exercises of the masticatory muscles in healthy subjects...
May 21, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29768521/immediate-effects-of-temporary-bite-raising-with-light-cured-orthodontic-band-cement-on-the-electromyographic-response-of-masticatory-muscles
#2
Darin Pativetpinyo, Weera Supronsinchai, Chidsanu Changsiripun
To assess the immediate effects of temporary bite-raising using light-cured orthodontic band cement on the superficial masseter and anterior temporalis electromyography (EMG) activity in healthy adults. Surface EMG signals were recorded bilaterally from the superficial masseter and anterior temporalis muscles of 30 volunteers with a normal occlusion, before and after having temporary bite-raising. The bite-raising was done by adding light-cured orthodontic band cement (3x5x2 mm WxLxH) on the lingual cusps of both upper first molars...
May 14, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29768084/effect-of-phototherapy-on-masseter-and-anterior-temporal-muscles-before-induction-of-fatigue-a-randomized-sham-controlled-blind-clinical-trial
#3
Camila Haddad Leal de Godoy, Lara Jansiski Motta, Washington Steagall Júnior, Marcela Leticia Leal Gonçalves, Daniela Fátima Teixeira da Silva, Raquel Agnelli Mesquita-Ferrari, Aldo Brugnera Júnior, Sandra Kalil Bussadori
OBJECTIVE: This is a randomized, sham-controlled, blind clinical trial that aimed to evaluate the effect of phototherapy on bite force, mandibular range of motion, sensitivity to palpation, and fatigue in the masseter and anterior temporal muscles of young patients when administered before the induction of fatigue. MATERIALS AND METHODS: Fifty-two healthy volunteers aged 18-23 years were randomly allocated to a laser group and sham group. Both groups were submitted to a clinical evaluation to record mandibular range of motion, bite force, muscle sensitivity to palpation, and muscle fatigue...
May 16, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29767650/immediate-effect-of-continuous-ultrasound-vs-sham-ultrasound-for-bilateral-masseter-myalgia-a-double-blinded-trial
#4
Haseeb Hussain, Heidi Crow, Yoly Gonzalez, W D McCall
AIMS: To investigate the local and segmental effects of therapeutic ultrasound at a dose of 0.4 w/cm2 with 100% duty cycle for 5 minutes compared to the effect of sham ultrasound on painful masticatory muscles. METHODS: A total of 20 adult female subjects with bilateral masseter myalgia diagnosed according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) were included. Each subject was randomized to either an active ultrasound group or a sham ultrasound group...
May 15, 2018: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29767649/experimental-psychological-stress-on-quantitative-sensory-testing-response-in-patients-with-temporomandibular-disorders
#5
Dyna Mara Araújo Oliveira Ferreira, Yuri Martins Costa, Henrique Müller de Quevedo, Leonardo Rigoldi Bonjardim, Paulo César Rodrigues Conti
AIMS: To assess the modulatory effects of experimental psychological stress on the somatosensory evaluation of myofascial temporomandibular disorder (TMD) patients. METHODS: A total of 20 women with myofascial TMD and 20 age-matched healthy women were assessed by means of a standardized battery of quantitative sensory testing. Cold detection threshold (CDT), warm detection threshold (WDT), cold pain threshold (CPT), heat pain threshold (HPT), mechanical pain threshold (MPT), wind-up ratio (WUR), and pressure pain threshold (PPT) were performed on the facial skin overlying the masseter muscle...
May 15, 2018: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29765915/association-between-muscle-activity-and-overjet-in-class-ii-malocclusion-with-surface-electromyography
#6
Shamima Easmin Nishi, Rehana Basri, Norma Ab Rahman, Adam Husein, Mohammad Khursheed Alam
OBJECTIVES: The aim of the study was to assess the association and correlation between the overjet and muscle activity (the masseter and temporalis muscles) in patient with Class II malocclusion in different genders using surface electromyography (sEMG). MATERIALS AND METHODS: The overjet (measured clinically) and electromyographical activity (rest, chew, post chew rest, clench and post clench rest) of the masseter and temporalis muscle of class II malocclusion patient were assessed in 18 patients (3 males and 15 females) from the School of Dental Science, Hospital University Sains Malaysia...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29763576/g-i-protein-functions-in-thalamic-neurons-to-decrease-orofacial-nociceptive-response
#7
Jennifer Strand, Crystal Stinson, Larry L Bellinger, Yuan Peng, Phillip R Kramer
Orofacial pain includes neuronal pathways that project from the trigeminal nucleus to and through the thalamus. What role the ventroposterior thalamic complex (VP) has on orofacial pain transmission is not understood. To begin to address this question an inhibitory G protein (Gi) designer receptor exclusively activated by a designer drug (DREADD) was transfected in cells of the VP using adeno-associated virus isotype 8. Virus infected cells were identified by a fluorescent tag and immunostaining. Cells were silenced after injecting the designer drug clozapine-n-oxide, which binds the designer receptor activating Gi ...
May 12, 2018: Brain Research
https://www.readbyqxmd.com/read/29762320/electromyographic-activity-of-the-masseter-and-temporal-muscles-in-patients-with-nonsyndromic-complete-unilateral-cleft-lip-and-palate-2-stage-versus-1-stage-palate-repair
#8
Anelise Sabbag, Rafael Denadai, Cesar Augusto Raposo-Amaral, Celso Luiz Buzzo, Cassio Eduardo Raposo-Amaral, Mirian H Nagae
OBJECTIVE: To assess the electromyographic activity of the masseter and temporal muscles in cleft patients who underwent 1-stage palate repair versus 2-stage palate repair. METHODS: Thirty-two patients with nonsyndromic complete unilateral cleft lip and palate operated by 2 different protocols for palate repair, 1-stage (group 1, n = 16) versus 2-stage with delayed hard palate closure (group 2, n = 16) were available in the retrospective longitudinal study...
May 14, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29761534/co-contraction-behavior-of-masticatory-and-neck-muscles-during-tooth-grinding
#9
Nikolaos Nikitas Giannakopoulos, Hans-Jürgen Schindler, Daniel Hellmann
OBJECTIVE: The objective of this study was to analyze the co-contraction behavior of jaw and neck muscles during force-controlled experimental grinding in the supine position. METHODS: Twelve symptom-free subjects were enrolled in the experiment study. Electromyographic (EMG) activity of semispinalis capitis, splenius capitis, and levator scapulae muscles was recorded bilaterally with intramuscular fine-wire electrodes, whereas that of sternocleidomastoideus, infrahyoidal, suprahyoidal, masseter, and anterior temporalis muscles were registered with surface electrodes...
May 14, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29760181/corticosterone-signaling-and-a-lateral-habenula-ventral-tegmental-area-circuit-modulate-compulsive-self-injurious-behavior-in-a-rat-model
#10
Yujie Guo, Xun Tang, Jichuan Zhang, Sen Jin, Jinnan Li, Lufeng Ding, Keming Zhang, Chaoyu Yang, Hua Zhou, Xiaobin He, Fuqiang Xu, Guo-Qiang Bi, Lin Xu, Pak-Ming Lau
Self-injurious behavior (SIB) is commonly observed in patients with neuropsychiatric disorders, as well as nonclinical populations with stress related mental health problems. However, the exact circuitry mechanisms underlying SIB have remained unclear. Here we established a rat model of SIB with bilateral injection of muscimol into entopeduncular nucleus (EP). Following the muscimol injection, the male rats exhibited stereotypic self-biting behavior that lasted for hours and often resulted in wounds of various severities, in a dose-dependent manner...
May 14, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29745983/muscle-hardness-and-masticatory-myofascial-pain-assessment-and-clinical-relevance
#11
REVIEW
Yuri M Costa, Yoshiko Ariji, Dyna Mara A O Ferreira, Leonardo R Bonjardim, Paulo César R Conti, Eiichiro Ariji, Peter Svensson
BACKGROUND: The impression of increased muscle hardness in painful muscles is commonly reported in the clinical practice but may be difficult to assess. Therefore, the aim of this review is to present and discuss relevant aspects regarding the assessment of muscle hardness and its association with myofascial temporomandibular disorder (TMD) pain. METHODS: A non-systematic search for studies of muscle hardness assessment in patients with pain-related TMDs was carried out in PubMed, Cochrane Library, Embase and Google Scholar...
May 10, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29738922/behavioral-characteristics-of-capsaicin-mediated-cutaneous-myogenic-and-arthrogenic-orofacial-nociception-in-rats
#12
Eric L Rohrs, John K Neubert, Robert M Caudle, Kyle D Allen
OBJECTIVE: To assess changes in orofacial tactile sensitivity and gnawing related to capsaicin-mediated cutaneous, myogenic, and arthrogenic nociception in the rat. DESIGN: After recovery from anesthesia, orofacial tactile sensitivity and gnawing were assessed using operant testing methods following capsaicin application. Twenty female CD-Hairless rats were tested with bilateral capsaicin cream application to the cheek or with isoflurane anesthesia alone. Following several weeks of recovery, animals (n = 20) received either 10 μL unilateral masseter injections of vehicle, or phosphate buffered saline (PBS) to assess injection sensitization...
April 30, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29723985/breakfast-in-human-nutrition-the-international-breakfast-research-initiative
#13
REVIEW
Michael J Gibney, Susan I Barr, France Bellisle, Adam Drewnowski, Sisse Fagt, Barbara Livingstone, Gabriel Masset, Gregorio Varela Moreiras, Luis A Moreno, Jessica Smith, Florent Vieux, Frank Thielecke, Sinead Hopkins
Breakfast is often referred to as the most important meal of the day and in recent years has been implicated in weight control, cardio-metabolic risk factors and cognitive performance although, at present, the literature remains inconclusive as to the precise health benefits of breakfast. There are extensive reports of breakfast’s contributions to daily food and nutrient intakes, as well as many studies that have compared daily food and nutrient intakes by breakfast consumers and skippers. However, significant variation exists in the definitions of breakfast and breakfast skippers, and in methods used to relate breakfast nutrient intakes to overall diet quality...
May 1, 2018: Nutrients
https://www.readbyqxmd.com/read/29720327/effects-of-clear-aligners-on-sleep-bruxism-randomized-controlled-trial
#14
T Castroflorio, A Bargellini, A Lucchese, M Manuelli, F Casasco, G Cugliari, I Cioffi, A Deregibus
The possible effects on sleep bruxism (SB) of clear aligners in orthodontics are unknown. This study was conducted to analyze the effects of clear aligners on SB. Sixty subjects needing orthodontic treatment and affected by SB (33 m, 27 f, 20±;5 years) were enrolled in the study and randomly assigned to one of the following three groups: 20 were given clear aligners (CAT) (12 m, 8 f, 19±5 years), 20 occlusal splint (MOS) (9 m, 11 f, 22±5 years) and 20 a placebo splint (PMS) (12 m, 8 f, 24±3 years). All groups were followed for 6 consecutive months and monitored for SB with a portable electromyographic-electrocardiographic (EMG-ECG) device (Bruxoff®, OT Bioelettronica, Torino, Italy)...
March 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29719051/preliminary-approach-for-the-surface-electromyographical-evaluation-of-the-oral-phase-of-swallowing
#15
C Dellavia, R Rosati, F Musto, G Pellegrini, G Begnoni, V F Ferrario
BACKGROUND: Swallowing is a muscular activity that occurs both after mastication and spontaneously as a result of saliva accumulation. Spontaneous saliva swallowing occurs about every 2 min. Comprehension of its functional mechanisms is relevant to assess their modification in clinical situations. A standardized surface electromyographical (ssEMG) protocol for the evaluation of this muscle activity is lacking. OBJECTIVES: i)to determine the reproducibility of a ssEMG protocol for the evaluation of the oral phase of saliva swallowing, ii)to evaluate the activity of masseter(MM), anterior temporalis(TA), submental muscles(SM) to draw a reference model of swallowing...
May 2, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29713345/electromyofigureic-evaluation-of-functional-adaptation-of-patients-with-new-complete-dentures
#16
Kujtim Sh Shala, Linda J Dula, Teuta Pustina-Krasniqi, Teuta Bicaj, Enis F Ahmedi, Zana Lila-Krasniqi, Arlinda Tmava-Dragusha
Objective: The objective of this study was to evaluate the level of adaptation of patients to newly fitted complete dentures in their dominant and nondominant sides, by means of ElectromyoFigureic signals. Materials and Methods: Eighty-eight patients with complete dentures were evaluated in the study. Masticatory muscle ( masseter and temporal ) bioelectric activity of the patients with complete dentures was recorded at maximum intercuspal relation. Parametric statistical data were analyzed with one-way repeated measures ANOVA test...
2018: International Journal of Dentistry
https://www.readbyqxmd.com/read/29703519/proteomics-and-immunohistochemistry-identify-the-expression-of-%C3%AE-cardiac-myosin-heavy-chain-in-the-jaw-closing-muscles-of-sooty-mangabeys-order-primates
#17
Christine E Wall, Megan Holmes, Erik J Soderblom, Andrea B Taylor
OBJECTIVE: The jaw-closing muscles of humans and nonprimate mammals express alpha-cardiac fibers but MyHC α-cardiac has not been identified in the jaw adductors of nonhuman primates. We determined whether MyHC α-cardiac is expressed in the superficial masseter and temporalis muscles of the sooty mangabey (Cercocebus atys), an African Old World monkey that specializes on hard seeds. DESIGN: LC-MS/MS based proteomics was used to identify the presence of MyHC Iα...
February 3, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29696497/cerebellar-ataxia-neuropathy-vestibular-areflexia-syndrome-canvas-with-chronic-cough-and-preserved-muscle-stretch-reflexes-evidence-for-selective-sparing-of-afferent-ia-fibres
#18
Jon Infante, Antonio García, Karla M Serrano-Cárdenas, Rocío González-Aguado, José Gazulla, Enrique M de Lucas, José Berciano
The aim of this study was to describe five patients with cerebellar ataxia, neuropathy and vestibular areflexia syndrome (CANVAS) with chronic cough and preserved limb muscle stretch reflexes. All five patients were in the seventh decade of age, their gait imbalance having been initiated in the fifth decade. In four patients cough antedated gait imbalance between 15 and 29 years; cough was spasmodic and triggered by variable factors. Established clinical picture included severe hypopallesthesia predominating in the lower limbs with postural imbalance, and variable degree of cerebellar axial and appendicular ataxia, dysarthria and horizontal gaze-evoked nystagmus...
April 25, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29694464/effects-of-a-physical-therapy-protocol-in-patients-with-chronic-migraine-and-temporomandibular-disorders-a-randomized-single-blinded-clinical-trial
#19
Miriam Garrigós-Pedrón, Roy La Touche, Pablo Navarro-Desentre, Manuel Gracia-Naya, Eva Segura-Ortí
AIMS: To investigate the effects of adding orofacial treatment to cervical physical therapy in patients with chronic migraine and temporomandibular disorders (TMD). METHODS: A total of 45 participants with chronic migraine and TMD aged 18 to 65 years were randomized into two groups: a cervical group (CG) and a cervical and orofacial group (COG). Both groups continued their medication regimens for migraine treatment and received physical therapy. The CG received physical therapy only in the cervical region, and the COG received physical therapy in both the cervical and orofacial regions...
April 2018: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29692573/a-new-adjunctive-tool-to-aid-in-the-diagnosis-of-myogenous-temporomandibular-disorder-pain-originating-from-the-masseter-and-temporalis-muscles-twin-block-technique
#20
Samuel Y P Quek, Mythili Kalladka, Veena Kanti, Gayathri Subramanian
Myogenous temporomandibular disorder (TMD) is the most common type of nonodontogenic pain. The diagnosis is often elusive since diagnosing such conditions often requires a more comprehensive patient assessment. At present, there is no simple one-step diagnostic test to help render a definitive diagnosis of myogenous TMD pain. The twin-block injection can serve as a diagnostic aid to facilitate diagnosis of such myogenous TMD. The twin-block injection blocks the innervation to both the temporalis and masseter muscles, the two most common sources of referred pain to the teeth...
April 2018: Journal of Indian Prosthodontic Society
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