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https://www.readbyqxmd.com/read/28218006/do-tmj-symptoms-improve-and-last-across-time-after-treatment-with-red-660-nm-and-infrared-790-nm-low-level-laser-treatment-lllt-a-survival-analysis
#1
Dhelfeson Willya Douglas De Oliveira, Frederico Santos Lages, Raphael Castro Guimarães, Túlio Silva Pereira, Adriana Maria Botelho, José Cristiano Ramos Glória, Karine Taís Aguiar Tavano, Patricia Furtado Gonçalves, Olga Dumont Flecha
OBJECTIVE: Temporomandibular disorder (TMD) is a variety of clinical problems that originate from the area of the temporomandibular joint (TMJ), masticatory muscles, and surrounding tissues. There are different treatment options; however, there is no evidence that low level laser treatment (LLLT) will last about six months. The aim of this study was to determine the survival rate of treatment with red (660 nm) and infrared (790 nm) laser in cases of TMDs. METHODS: In 19 subjects, one side of the face (half face) was randomly selected to receive intervention, in a total of 116 sensitive points...
February 20, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28216853/disclusion-time-reduction-therapy-in-treating-occluso-muscular-pains
#2
Prafulla Thumati, Robert B Kerstein, Roshan P Thumati
Disclusion time reduction (DTR) is an objective treatment protocol using T-Scan III (digital analysis of occlusion) and electromyography for treating occlusally activated orofacial pains. Chronic occluso-muscle disorder is a myogenous subset of temporomandibular disorder symptoms. These muscular symptoms are induced within hyperactive masticatory muscles due to prolonged disclusion time, occlusal interferences, and occlusal surface friction that occur during mandibular excursive movements. This case report describes a patient treated by DTR therapy, whereby measured pretreatment prolonged disclusion time was reduced to short disclusion time using the immediate complete anterior guidance development enameloplasty, guided by T-Scan occlusal contact time and force analysis synchronized with electromyographic recordings of four masticatory muscles...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28216846/three-dimensional-finite-element-analysis-of-the-stress-distribution-pattern-in-a-mandibular-first-molar-tooth-restored-with-five-different-restorative-materials
#3
Kathleen Manuela D'souza, Meena Ajay Aras
INTRODUCTION: Badly broken or structurally compromised posterior teeth are frequently associated with crown/root fracture. Numerous restorative materials have been used to fabricate indirect full-coverage restorations for such teeth. This study aims to evaluate and compare the effect of restorative materials on the stress distribution pattern in a mandibular first molar tooth, under varying loading conditions and to compare the stress distribution pattern in five commonly used indirect restorative materials...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28216840/impact-of-occlusal-support-and-perceived-chewing-ability-on-oral-health-related-quality-of-life-among-patients-attending-a-private-dental-institution-in-india
#4
Seebu Dhingra, Gururaghavendran Rajesh, Ashwini Rao, Umesh Y Pai, Ramya Shenoy, Mithun Pai
PURPOSE: Presence of functional tooth units is essential for preserving masticatory function among individuals. Representing the essence of health promotion practice, demand to measure varied evaluation outcomes is highlighted. AIM AND OBJECTIVES: (1) To assess the influence of occlusal support and perceived chewing ability on oral health-related quality of life (OHRQoL) among adults attending a private dental institution in Mangalore. (2) To evaluate occlusal support using Eichner index (EI), perceived chewing ability using a self-administered questionnaire and OHRQoL using Oral Health Impact Profile-14 (OHIP-14)...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28214402/relationship-between-chewing-ability-and-cognitive-impairment-in-the-rural-elderly
#5
Eun-Kyong Kim, Sung Kook Lee, Youn-Hee Choi, Makiko Tanaka, Kimiko Hirotsu, Hyeon Chang Kim, Hee-Kyung Lee, Yun-Sook Jung, Atsuo Amano
OBJECTIVE: Relationship between masticatory function and cognitive impairment had been suggested but still understudied. We investigated the association between chewing ability and cognitive impairment among the elderly living in a rural region. METHODS: A total of 295 elderly individuals aged ≥70 years in a rural city of Korea participated in a cross-sectional study. Trained nurses conducted interviews and assessed chewing ability using gum that changed color based on chewing performance...
February 11, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28212925/reversible-opercular-syndrome-secondary-to-osmotic-demyelination
#6
Shuchit Pandey, Vikram V Holla, Imran Rizvi, Rakesh Shukla
Opercular syndrome (OPS) is characterized by weakness of facial, masticatory, pharyngeal, laryngeal, tongue and brachial muscles on voluntary command with preservation of emotional and reflexive movements. We report a case of 45year old female who developed the features of OPS due to lesions of bilateral frontal opercular region induced by osmotic demyelination secondary to hyperosmolar hyperglycaemia. On follow up at 6 months, she had complete recovery.
February 11, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28209396/changes-in-bite-force-after-orthognathic-surgical-correction-of-mandibular-prognathism-a-systematic-review
#7
REVIEW
I Islam, A A T Lim, R C W Wong
Patients requesting treatment for mandibular prognathism seek functional and aesthetic improvements. Improvements in bite force and efficiency are generally used as measures of better function. It is unclear what effect the surgical correction of mandibular prognathism will have on the patient's occlusal forces. The literature was searched using medical subject heading (MeSH) and key word terms 'bite force', 'osteotomy', 'orthognathic surgery', and 'prognathism'. A total of 17 articles were included in this review...
February 13, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28202999/-changes-of-productions-of-energy-metabolism-in-masseter-of-rats-induced-by-occlusal-interference
#8
X X Xu, Y Cao, K Y Fu, Q F Xie
OBJECTIVE: To investigate the effect of occlusal interference on the energy metabolism of masticatory muscle by studying the changes of adenosine triphosphate (ATP), adenosine diphosphate (ADP), inosine monophosphate (IMP), phosphocreatine, creatine, lactate and pH level in masseter muscles of rats after occlusal interference. METHODS: Fifty male Sprague-Dawley rats were randomly assigned into experimental group (n=40) and control group (n=10). In experimental group, 0...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28199931/a-personalized-3d-printed-prosthetic-joint-replacement-for-the-human-temporomandibular-joint-from-implant-design-to-implantation
#9
David C Ackland, Dale Robinson, Michael Redhead, Peter Vee Sin Lee, Adrian Moskaljuk, George Dimitroulis
Personalized prosthetic joint replacements have important applications in cases of complex bone and joint conditions where the shape and size of off-the-shelf components may not be adequate. The objective of this study was to design, test and fabricate a personalized 3D-printed prosthesis for a patient requiring total joint replacement surgery of the temporomandibular joint (TMJ). The new 'Melbourne' prosthetic TMJ design featured a condylar component sized specifically to the patient and fixation screw positions that avoid potential intra-operative damage to the mandibular nerve...
February 6, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28198949/influence-of-the-presence-of-temporomandibular-disorders-on-postural-balance-in-the-elderly
#10
Paula Vanessa Pedron Oltramari-Navarro, Marjorie Takei Yoshie, Rubens Alexandre da Silva, Ana Cláudia de Castro Ferreira Conti, Ricardo de Lima Navarro, Luciana Lozza do Moraes Marchiori, Karen Barros Parron Fernandes
Purpose: To investigate the influence of the presence of Temporomandibular Disorders (TMD) on postural balance in elderly individuals. Methods: The study sample consisted of 150 elderly: 103 women (67.7±5.0 years) and 47 men (69.3±5.5 years). Evaluation of the presence and severity of TMD included an anamnesis questionnaire, an evaluation of the temporomandibular joint (TMJ), and a muscular examination, which allowed the division of the elderly into 2 groups: G1 (experimental, n=95), with TMD; G2 (control, n=55), without TMD...
February 9, 2017: CoDAS
https://www.readbyqxmd.com/read/28194098/spatiotemporal-profiles-of-proprioception-processed-by-the-masseter-muscle-spindles-in-rat-cerebral-cortex-an-optical-imaging-study
#11
Satoshi Fujita, Mari Kaneko, Hiroko Nakamura, Masayuki Kobayashi
Muscle spindles in the jaw-closing muscles, which are innervated by trigeminal mesencephalic neurons (MesV neurons), control the strength of occlusion and the position of the mandible. The mechanisms underlying cortical processing of proprioceptive information are critical to understanding how sensory information from the masticatory muscles regulates orofacial motor function. However, these mechanisms are mostly unknown. The present study aimed to identify the regions that process proprioception of the jaw-closing muscles using in vivo optical imaging with a voltage-sensitive dye in rats under urethane anesthesia...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28193127/relations-between-the-results-of-complex-clinical-and-neurophysiological-examinations-in-patients-with-temporomandibular-disorders-symptoms
#12
Anna Sójka, Juliusz Huber, Wiesław Hędzelek, Agnieszka Wiertel-Krawczuk, Agnieszka Szymankiewicz-Szukała, Agnieszka Seraszek-Jaros, Aleksandra Kulczyk, Agnieszka Wincek, Magdalena Sobieska
OBJECTIVE: Reinvestigation of clinical importance of surface electromyography recordings (sEMG) from the masticatory, neck and shoulder girdle muscles in patients with various clinically detected temporomandibular disorders (TMDs). METHODS: Fifty women with myalgia diagnosis of Axis I DC/TMD and the same number of healthy female volunteers were studied clinically and neurophysiologically by means of sEMG. RESULTS: Unilateral more than bilateral complex symptoms of TMDs were related to the non-neurogenic masticatory rather than neck and shoulder girdle muscles dysfunctions at rest...
February 14, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28188109/quantitative-evaluation-of-masseter-muscle-stiffness-in-patients-with-temporomandibular-disorders-using-shear-wave-elastography
#13
Makiko Takashima, Yoshiaki Arai, Atsushi Kawamura, Takafumi Hayashi, Ritsuo Takagi
PURPOSE: The aim of this study was to quantify masseter muscle stiffness in patients with masticatory myofascial pain. METHODS: Stiffness was measured using shear wave elastography, which expresses stiffness as shear wave velocity (Vs). A phantom study was conducted to confirm the reliability of the measuring device. The study participants were 26 females with bilateral masseter muscle pain who were classified into either Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) group Ia (myofascial pain; n=13) or RDC/TMD group Ib (myofascial pain with limited opening; n=13)...
February 7, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28181679/mechanism-of-motor-coordination-of-masseter-and-temporalis-muscles-for-increased-masticatory-efficiency-in-mice
#14
Tomoko Yoshimi, Yoshiyuki Koga, Aya Nakamura, Ayumi Fujishita, Haruka Kohara, Emi Moriuchi, Keiko Yoshimi, Chi-Yang Tsai, Noriaki Yoshida
The demand for the use of mice as animal models for elucidating the pathophysiologies and pathogeneses of oral motor disorders has been increasing in recent years, as more and more kinds of genetically modified mice that express functional disorders of the stomatognathic system become available. However, the fundamental characteristics of mouse jaw movements during mastication have yet to be fully elucidated. The purpose of this study was to investigate the roles of the masseter and temporalis muscles, and the mechanisms of motor coordination of these muscles for increasing masticatory efficiency in the closing phase in mice...
February 9, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28167165/the-use-of-a-custom-made-mouthguard-stabilizes-the-electromyographic-activity-of-the-masticatory-muscles-among-karate-d%C3%A5-athletes
#15
Gilsane Raquel, Eli Luis Namba, Daniel Bonotto, Edvaldo Antônio Ribeiro Rosa, Paula Cristina Trevilatto, Maria Ângela Naval Machado, Michelle Santos Vianna-Lara, Luciana Reis Azevedo-Alanis
AIMS: To analyze and compare the electromyographic activity of the temporal (anterior portion) and masseter muscles among Karate-Dō athletes before and after training, with and without the use of a mouthguard. METHODS: Twenty athletes (14 males and 6 females) with a mean age of 23.7 ± 7.5 years participated. They had surface electromyography recordings taken of their bilateral temporal and masseter muscles before and after training under the following conditions: no mouthguard, with a ready-made mouthguard, and with a custom-made mouthguard...
January 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28160580/sclerotherapy-for-the-recurrent-granulomatous-epulis-with-pingyangmycin
#16
Y Cai, R Sun, K-F He, Y-F Zhao, J-H Zhao
BACKGROUND: Relapse of granulomatous epulis is common after surgery because of local irritations, hormonal level in vivo, or incomplete resection. Currently, if recurrence occurs, then extraction of the teeth adjacent to the lesion is commonly performed, which may influence the aesthetics or masticatory function. Thus, a more effective and less aggressive treatment method is urgently demanded, particularly for the recurring lesion. This study investigated the effects of the intralesional pingyangmycin (PYM) injections for the recurrent granulomatous epulis and assessed the complications...
February 4, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28150182/changes-in-mandibular-movement-during-chewing-of-different-hardness-foods
#17
Marie Komino, Hiroshi Shiga
In order to clarify the change in mandibular movement during chewing of foods with different hardness, 20 healthy subjects were asked to chew 3 types of gummy jellies (containing 6, 8, and 10% gelatin), and the masseter muscular activity and the mandibular movement were recorded. The indicators representing the muscular activity (integral value of masseter muscular activity), the mandibular movement (opening distance, masticatory width, cycle time, opening maximum velocity and closing maximum velocity), and the stability of masticatory movement were calculated, respectively, and compared among the three foods...
February 1, 2017: Odontology
https://www.readbyqxmd.com/read/28138227/electromyographic-activity-of-masticatory-muscles-in-elderly-women-a-pilot-study
#18
Ewelina Gaszynska, Karolina Kopacz, Magdalena Fronczek-Wojciechowska, Gianluca Padula, Franciszek Szatko
OBJECTIVES: To evaluate the effect of age and chosen factors related to aging such as dentition, muscle strength, and nutrition on masticatory muscles electromyographic activity during chewing in healthy elderly women. BACKGROUND: With longer lifespan there is a need for maintaining optimal quality of life and health in older age. Skeletal muscle strength deteriorates in older age. This deterioration is also observed within masticatory muscles. METHODS: A total of 30 women, aged 68-92 years, were included in the study: 10 individuals had natural functional dentition, 10 were missing posterior teeth in the upper and lower jaw reconstructed with removable partial dentures, and 10 were edontoulous, using complete removable dentures...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28129722/clinical-predictive-factors-for-temporomandibular-disorders-following-combined-orthodontic-and-orthognathic-surgical-treatment-in-patients-with-class-iii-malocclusion
#19
Gregory S Antonarakis, Nicole Kalberer, Delphine S Courvoisier, Paolo Scolozzi
OBJECTIVE: The aim of this study was to identify clinical factors predisposing to the development or worsening of temporomandibular disorders (TMDs) following orthodontic surgical treatment for Class III malocclusion. METHODS: A retrospective cohort study was performed on 88 patients with Class III malocclusion having undergone a combined orthodontic and orthognathic surgical treatment. Temporomandibular joint and masticatory muscle examinations were available prior to treatment and one year post-operatively...
January 27, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28128465/oro-facial-impairment-in-stroke-patients
#20
REVIEW
Martin Schimmel, Takahiro Ono, Otto L T Lam, Frauke Müller
Stroke is considered one of the leading causes of death and acquired disability with a peak prevalence over the age of 80 years. Stroke may cause debilitating neurological deficiencies that frequently result in sensory deficits, motor impairment, muscular atrophy, cognitive deficits and psychosocial impairment. Oro-facial impairment may occur due to the frequent involvement of the cranial nerves' cortical representation areas, central nervous system pathways or motoneuron pools. The aim of this narrative, non-systematic review is to discuss the implications of stroke on oro-facial functions and Oral Health Related Quality of Life (OHRQoL)...
January 27, 2017: Journal of Oral Rehabilitation
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