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Mandibular Disorders

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https://www.readbyqxmd.com/read/28437035/the-association-between-oral-examination-findings-and-the-computed-tomographic-appearance-of-the-equine-temporomandibular-joint
#1
J L Carmalt, H Simhofer, A Bienert-Zeit, J E Rawlinson, C L Waldner
BACKGROUND: The temporomandibular joint (TMJ) forms the junction between the maxilla and mandible. Movement of the jaw and resulting masticatory forces have been extensively studied in the horse; however, less is known about the inter-relationship between this joint and oral and dental pathology. OBJECTIVES: To determine the association between specific oral and dental pathologies and anatomical variations of the TMJ imaged with computed tomography (CT) in horses with asymptomatic TMJs...
April 24, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28435374/spatial-analysis-of-mandibular-condyles-in-patients-with-temporomandibular-disorders-and-normal-controls-using-cone-beam-computed-tomography
#2
Natheer Hashim Al-Rawi, Asmaa Tahseen Uthman, Sahar M Sodeify
OBJECTIVES: The aim of the study is to investigate the condylar position and its relation to articular eminence and axial condylar angle in temporomandibular joint disorder (TMD) patients and in normal controls using cone beam computed tomography (CBCT). MATERIALS AND METHODS: CBCT temporomandibular joint (TMJ) images of 70 participants (38 males and 32 females, mean age 26.4 years) were analyzed. They were divided into control group (including 35 subjects) and study group (including 35 subjects)...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28427400/monitoring-mandibular-movements-to-detect-cheyne-stokes-breathing
#3
Jean-Benoît Martinot, Jean-Christian Borel, Nhat-Nam Le-Dong, Hervé Jean-Pierre Guénard, Valerie Cuthbert, Philip E Silkoff, David Gozal, Jean-Louis Pepin
BACKGROUND: The patterns of mandibular movements (MM) during sleep can be used to identify increased respiratory effort periodic large-amplitude MM (LPM), and cortical arousals associated with "sharp" large-amplitude MM (SPM). We hypothesized that Cheyne Stokes breathing (CSB) may be identified by periodic abnormal MM patterns. The present study aims to evaluate prospectively the concordance between CSB detected by periodic MM and polysomnography (PSG) as gold-standard. The present study aims to evaluate prospectively the concordance between CSB detected by periodic MM and polysomnography (PSG) as gold-standard...
April 20, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28420009/temporal-summation-and-motor-function-modulation-during-repeated-jaw-movements-in-patients-with-temporomandibular-disorder-pain-and-healthy-controls
#4
Yuanxiu Zhang, Sheng Shao, Jinglu Zhang, Lin Wang, Kelun Wang, Peter Svensson
Temporal summation of nociceptive inputs may be an important pathophysiological mechanism in temporomandibular disorders (TMD) pain; however, it remains unknown how natural jaw function relates to underlying pain mechanisms. This study evaluated changes in pain and movement patterns during repeated jaw movements in patients with painful temporomandibular joints (TMJ) compared with healthy controls. Twenty patients with TMD with TMJ pain, and an anterior disk displacement without reduction and 20 age- and gender-matched healthy volunteers were included...
March 31, 2017: Pain
https://www.readbyqxmd.com/read/28417851/nuclear-medicine-techniques-in-pediatric-bone-imaging
#5
REVIEW
Laura A Drubach
An important mandate when imaging pediatric patients is the reduction of radiation exposure to the lowest possible level consistent with good quality diagnostic imaging, so individual selection of radiopharmaceutical dosage and imaging technique is essential. Although the logistics of image acquisition and the approach to interpretation mirror the more common use in adults, the challenges of imaging young children typically require greater attention to patient preparation, positioning, and supervision during imaging, with the use of parental or family engagement in the procedure, gentle restraint, and occasionally the need for sedation...
May 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28416999/bilateral-maxillary-and-mandibular-buccal-exostosis-a-self-reported-case-and-a-proposal-to-include-buccal-exostosis-under-miscellaneous-disorders-of-revised-working-classification-of-the-psychosomatic-disorders-pertaining-to-dental-practice
#6
https://www.readbyqxmd.com/read/28414608/mechanobehavioral-scores-in-women-with-and-without-tmj-disc-displacement
#7
L R Iwasaki, Y M Gonzalez, Y Liu, H Liu, M Markova, L M Gallo, J C Nickel
Cartilage fatigue may be a factor in the precocious development of degenerative changes in the temporomandibular joint (TMJ). This cross-sectional study estimated potential for cartilage fatigue via TMJ energy densities (ED) and jaw muscle duty factors (DF), which were combined to calculate mechanobehavioral scores (MBS) in women with (+) and without (-) bilateral TMJ disc displacement (DD). All subjects gave informed consent to participate and were examined using Diagnostic Criteria (DC) for Temporomandibular Disorders (TMD) and magnetic resonance (MR) and computed tomography (CT) images...
April 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28407990/mandibular-movements-in-older-people-with-rheumatoid-arthritis
#8
Kelly Machado de Andrade, Bruna Fernandes Moreira Alfenas, Camila Heitor Campos, Renata Cunha Matheus Rodrigues Garcia
OBJECTIVE: The aim of this study was to compare the mandibular movements in older people with and without temporomandibular disorder (TMD) associated with rheumatoid arthritis (RA). STUDY DESIGN: Thirty partially or completely edentulous older adults (65.33 ± 4.7 years) were assigned to 2 groups: (1) with RA and TMD and (2) without RA and TMD. Chewing movements of the jaws during mastication of the test material (Optocal) and the range of mandibular movements were evaluated by using the JT-3-D kinesiographic device before and after new removable prosthesis insertion...
May 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28403351/short-term-transcutaneous-electrical-nerve-stimulation-reduces-pain-and-improves-the-masticatory-muscle-activity-in-temporomandibular-disorder-patients-a-randomized-controlled-trial
#9
Ana Paula de Lima Ferreira, Dayse Regina Alves da Costa, Ana Izabela Sobral de Oliveira, Elyson Adam Nunes Carvalho, Paulo César Rodrigues Conti, Yuri Martins Costa, Leonardo Rigoldi Bonjardim
Objective: To investigate the short-term effect of transcutaneous electrical nerve stimulation (TENS) by examining pain intensity, pressure pain threshold (PPT) and electromyography (EMG) activity in patients with temporomandibular disorder (TMD). Material and Methods: Forty patients with myofascial TMD were enrolled in this randomized placebo-controlled trial and were divided into two groups: active (n=20) and placebo (n=20) TENS. Outcome variables assessed at baseline (T0), immediately after (T2) and 48 hours after treatment (T1) were: pain intensity with the aid of a visual analogue scale (VAS); PPT of masticatory and cervical structures; EMG activity during mandibular rest position (MR), maximal voluntary contraction (MVC) and habitual chewing (HC)...
March 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28399908/using-cone-beam-ct-to-assess-the-upper-airway-after-surgery-in-children-with-sleep-disordered-breathing-symptoms-and-maxillary-mandibular-disproportions-a-clinical-pilot
#10
Noura A Alsufyani, Michelle L Noga, Manisha Witmans, Irene Cheng, Hamdy El-Hakim, Paul W Major
BACKGROUND: The surgical excision of anatomic obstructions such as adenoids, palatine or lingual tonsils are commonly performed in children with sleep disordered breathing (SDB). Imaging studies measuring airway changes post-surgery in the SDB pediatric population are scarce, rarely addresses the nasal cavity, and are based on global measures (e.g. volume) that do not represent the complexity of the upper airway anatomy. The purpose of this pilot is to test the feasibility in using cone beam CT (CBCT) to analyze the nasal and pharyngeal airway space post-surgery using meaningful methods of analyses, and correlating imaging findings with clinical outcomes in children with SDB symptoms and maxillary-mandibular disproportion...
April 11, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28383601/temporomandibular-joint-involvement-in-rheumatoid-arthritis-patients-association-between-clinical-and-tomographic-data
#11
Patrícia Cf Cordeiro, Josemar P Guimaraes, Viviane A de Souza, Isabela M Dias, Jesca Nn Silva, Karina L Devito, Leticia L Bonato
Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by chronic inflammation and synovial hyperplasia, which usually affects multiple joints. The temporomandibular joint (TMJ) becomes susceptible to the development of changes resulting from RA. The aim of this study was to evaluate the presence of TMD and degenerative bone changes in TMJ in patients diagnosed with RA (rheumatoid arthritis). The Research Diagnostic Criteria for Temporomandibular Disorders (RDC/ TMD) questionnaire was used for clinical evaluation of the TMJ and for TMD classification of 49 patients of both sexes and all ages...
December 2016: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28368127/is-centric-relation-always-the-position-of-choice-for-tmds-case-report-of-how-tmd-and-airway-dimension-may-be-associated
#12
William E Harrell, Tim Tatum, Mike Koslin
Centric occlusion (CO) and centric relation (CR) have been controversial topics in dentistry for almost 100 years. The concept of CR emerged due to the search for a reproducible mandibular position that would enable the prosthodontic rehabilitation of patients needing denture treatment. The following case study is unique because of 2 questions. Which mandibular treatment splint position (CR or CO) was appropriate for the initial and eventual final treatment of this patient for her temporomandibular disorder/myofascial pain and dysfunction? Also, how might the mandibular position of CR and CO affect the size and shape of the airway? The airway's size and shape is important as it relates to sleep-disordered breathing and potentially leading to obstructive sleep apnea later in life...
April 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28334780/eif4a3-deficient-human-ipscs-and-mouse-models-demonstrate-neural-crest-defects-that-underlie-richieri-costa-pereira-syndrome
#13
Emily E Miller, Gerson S Kobayashi, Camila M Musso, Miranda Allen, Felipe A A Ishiy, Luiz C de Caires Junior, Ernesto S G Guimarães, Karina Griesi-Oliveira, Roseli M Zechi-Ceide, Antonio Richieri-Costa, Debora R Bertola, Maria Rita Passos-Bueno, Debra L Silver
Biallelic loss-of-function mutations in the RNA binding protein EIF4A3 cause Richieri-Costa-Pereira syndrome (RCPS), an autosomal recessive condition mainly characterized by craniofacial and limb malformations. However, the pathogenic cellular mechanisms responsible for this syndrome are entirely unknown. Here we used two complementary approaches, patient-derived induced pluripotent stem cells (iPSCs) and conditional Eif4a3 mouse models, to demonstrate that defective Neural Crest Cell (NCC) development explains RCPS craniofacial abnormalities...
March 2, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28330575/clinical-management-of-the-homozygous-%C3%AE-thalassemia-with-unusual-mandibular-manifestation-of-hematopoiesis
#14
J A Ruiz-Roca, R E Oñate-Sánchez, I Urrutia-Rodríguez, A Martínez-Izquierdo, D Mengual-Pujante, F J Rodríguez-Lozano
Alpha (α)-thalassemias are the most common genetic disorder of hemoglobin (Hb) synthesis, affecting up to 5% of the world's population. These congenital hemolytic anemias induce extramedullary hematopoiesis, including the liver, spleen, sinuses, and the diploic spaces of the skull. Oral health problems in patients with thalassemias are mostly related to a varied degree of facial deformities, malocclusions, and/or dental arch dimensions. We present a case with a 49-year-old man, diagnosed with homozygous α thalassemia that came to the Faculty of Dentistry at the University of Murcia for a dental treatment...
February 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28302228/anaesthetic-management-in-a-child-with-goldenhar-syndrome
#15
Waqas Ahmed Khan, Bushra Salim, Ausaf Ahmed Khan, Shakaib Chughtai
Goldenhar syndrome is a congenital disorder involving deformities of the face. It usually affects one side of the face only and poses significant challenges in the airway management. We herein, report an 8-year boy, known case of Goldenhar syndrome, who presented to our radiology suite for a magnetic resonance imaging (MRI) brain, followed by a computed tomography (CT) scan brain. The boy had various features of Goldenhar syndrome, e.g. cleft palate, absent right eye and ear, right mandibular hypoplasia, micrognathia, and preauricular tags...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28301687/effect-of-high-frequency-bio-oxidative-ozone-therapy-for-masticatory-muscle-pain-a-double-blind-randomised-clinical-trial
#16
T Celakil, A Muric, B Gokcen Roehlig, G Evlioglu, H Keskin
To evaluate the effect of bio-oxidative ozone application at the points of greatest pain in patients with chronic masticatory muscle pain. A total number of 40 (40 women, with a mean age of 31·7) were selected after the diagnosis of myofacial pain dysfunction syndrome according to the Research Diagnostic Criteria for temporomandibular disorder (RDC/TMD). The patients were randomly divided into two groups: patients received the ozone therapy at the point of greatest pain, ozone group (OG; n = 20); patients received the sham ozone therapy at the point of greatest pain, placebo group (PG; n = 20)...
March 16, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28299210/radiographic-enlargement-of-mandibular-canal-as-an-extranodal-primary-non-hodgkin-s-lymphoma-early-sign-in-an-asymptomatic-patient
#17
Luciana Munhoz, Felipe Pereira Marcos Marsan, Emiko Saito Arita
Non-Hodgkin's lymphoma (NHL) is a lymphoproliferative disorder, from a subgroup of heterogeneous hematologic malignancies; the term "extranodal" refers to malignant involvement of tissues other than lymph nodes, tonsils, spleen, pharyngeal lymphatic ring, or thymus. Only 0.6% of all NHL are at mandible alone, and it may involve the inferior alveolar canal. We describe a case of bilateral enlargement of the mandibular canal without symptomatology, which was shown in a panoramic radiograph and cone beam computed tomography in a rehabilitation routine exam, as an early sign of primary extranodal NHL...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28298794/anesthetic-implications-in-a-child-with-crouzon-syndrome
#18
Ajeet Kumar, Nitika Goel, Chandni Sinha, Abhishek Singh
Crouzon syndrome (CS) is an autosomal dominant genetic disorder characterized by craniofacial dysostosis. Premature fusion of skull base leads to midfacial hypoplasia, shallow orbit, mandibular prognathism, overcrowding of upper teeth, high-arched palate, and upper airway obstruction. It is important for anesthesiologists managing such patients to recognize and avoid potential airway complications. Here, we present a case of a 10-year-old child with CS posted for ptosis correction surgery. Use of peripheral nerve blocks to cut down opioid requirement, inhalational induction, and maintenance are key aspects in successful management of such cases...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28294380/oral-appliance-therapy-versus-nasal-continuous-positive-airway-pressure-in-obstructive-sleep-apnea-syndrome-a-randomized-placebo-controlled-trial-on-self-reported-symptoms-of-common-sleep-disorders-and-sleep-related-problems
#19
Maria Nikolopoulou, Anna Byraki, Jari Ahlberg, Martijn W Heymans, H L Hamburger, Jan De Lange, Frank Lobbezoo, Ghizlane Aarab
Obstructive sleep apnea syndrome (OSAS) is associated with several sleep disorders and sleep-related problems. Therefore, the aim of this study was to compare the effects of a mandibular advancement device (MAD) with those of nasal continuous positive airway pressure (nCPAP) on self-reported symptoms of common sleep disorders and sleep-related problems in mild and moderate OSAS patients. In this randomized placebo-controlled trial sixty-four OSAS patients (52.0± 9.6 years) were randomly assigned to an MAD, nCPAP or an intra-oral placebo appliance in a parallel design...
March 10, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28288293/prevalence-of-temporomandibular-dysfunction-and-its-association-with-malocclusion-in-children-an-epidemiologic-study
#20
Fundagül Bilgiç, İbrahim Erhan Gelgör
INTRODUCTION: Malocclusion is one etiological factor of temporomandibular joint disorder (TMD). This study investigates the prevalence of TMD and the relationship between TMD and the type of occlusion. STUDY DESIGN: A sample of 923 children (463 girls and 460 boys, ages 7-12 years old) was grouped not only by chronological age but also by gender. The information was collected on functional occlusion (anterior and lateral sliding, interferences), dental wear, mandibular mobility (maximal opening, deflection, deviation), and temporomandibular joint and muscular pain recorded by palpation...
2017: Journal of Clinical Pediatric Dentistry
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