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https://www.readbyqxmd.com/read/28629601/a-custom-made-temporomandibular-joint-prosthesis-for-fabrication-by-selective-laser-melting-finite-element-analysis
#1
Xiangliang Xu, Danmei Luo, Chuanbin Guo, Qiguo Rong
A novel and custom-made selective laser melting (SLM) 3D-printed alloplastic temporomandibular joint (TMJ) prosthesis is proposed. The titanium-6aluminium-4vanadium (Ti-6Al-4V) condyle component and ultra-high molecular weight polyethylene (UHMWPE) fossa component comprised the total alloplastic TMJ replacement prosthesis. For the condyle component, an optimized tetrahedral open-porous scaffold with combined connection structures, i.e. an inlay rod and an onlay plate, between the prosthesis and remaining mandible was designed...
June 16, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28629271/expression-of-interleukin-1-and-temporomandibular-disorder-contemporary-review-of-the-literature
#2
Adam Sorenson, Kyle Hresko, Seth Butcher, Sean Pierce, Vinicius Tramontina, Rosalia Leonardi, Carla Loreto, Jose Bosio, Luis Eduardo Almeida
OBJECTIVE: Temporomandibular disorders (TMD) are a group of conditions affecting the temporomandibular joint (TMJ), leading to jaw dysfunction, joint and muscle pain, and a decrease in quality of life. A communication network of pro- and anti-inflammatory mediators called cytokines maintains the homeostasis of the TMJ. This review will focus on the Interleukin (IL) family of cytokines, which have been quantified in TMJ synovial fluids in a variety of studies. IL-1α and IL-1β have pro-inflammatory effects, while the endogenous receptor antagonist (IL-1RA) inhibits the pro-inflammatory effects of IL-1...
June 19, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28623686/temporomandibular-prosthetic-joint-infections-associated-with-propionibacterium-acnes-a-case-series-and-a-review-of-the-literature
#3
Ruba Khader, Joseph Tingey, Steven Sewall
PURPOSE: The orthopedic literature has shown an increasing incidence of prosthetic joint infections (PJIs) associated with Propionibacterium acnes (P acnes). These infections present serious diagnostic and management challenges to the treating surgeons. In this review, the authors report on cases of P acnes-related temporomandibular joint (TMJ) PJIs that have been diagnosed and treated at their institution. MATERIALS AND METHODS: After approval by the institutional review board, information was obtained through a retrospective chart review...
May 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28623683/the-effects-of-unilateral-alloplastic-temporomandibular-joint-replacement-on-the-opposite-side-natural-joint-a-finite-element-analysis
#4
Burak Bekcioglu, Emel Bulut, Burcu Baş
PURPOSE: The purpose of this study was to evaluate the stress distribution on the temporomandibular joint (TMJ) prosthesis and contralateral natural TMJ with finite-element analysis. MATERIALS AND METHODS: A TMJ implant was used to create a 3-dimensional model with a computer. This model was integrated with a mandible model created with a computer by use of computed tomography images, similar to a real TMJ replacement procedure. Masticatory loads were applied to the model...
May 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28618979/complications-and-post-operative-sequelae-of-temporomandibular-joint-arthrocentesis
#5
Luigi Angelo Vaira, Maria Teresa Raho, Damiano Soma, Giovanni Salzano, Giovanni Dell'aversana Orabona, Pasquale Piombino, Giacomo De Riu
OBJECTIVE:  To evaluate intraoperative complications and postsurgical sequelae associated with arthrocentesis of the TMJ, including injection of Sodium Hyaluronate. METHODS: This retrospective study evaluated 433 arthrocentesis procedures performed in 315 patients between January 2009 and August 2016. The authors reviewed the complications identified during the procedure and the follow-up period. RESULTS: Temporary swelling of the periarticular tissues (95...
June 15, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28618972/techniques-and-modifications-for-tmj-arthrocentesis-a-literature-review
#6
Mehmet Fatih Şentürk, Tayfun Yazıcı, Uğur Gülşen
OBJECTIVES: To discuss advantages and disadvantages of TMJ arthrocentesis techniques, identifying modifications as reported in the literature. METHODS: A PubMed web-based search was carried out, using the terms TMJ and arthrocentesis, to determine the scope of coverage in well-documented articles in English. RESULTS: Among 237 articles, 12 distinct techniques were described for TMJ arthrocentesis in 12 articles. Among 12 techniques, 5 were classified as double puncture arthrocentesis (DPA) and 7 as single puncture arthrocentesis (SPA)...
June 15, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28613057/-analysis-of-factors-related-to-the-number-of-mesenchymal-stem-cells-derived-from-synovial-fluid-of-the-temporomandibular-joint
#7
Y P Sun, Y H Zheng, Z G Zhang
Objective: To analyze related factors on the number of mesenchymal stem cells in the synovial fluid of the temporomandibular joint (TMJ) and provide an research basis for understanding of the source and biological role of mesenchymal stem cells derived from synovial fluid in TMJ. Methods: One hundred and twenty-two synovial fluid samples from 91 temporomandibular disorders (TMD) patients who visited in Department of TMJ Center, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University from March 2013 to December 2013 were collected in this study, and 6 TMJ synovial fluid samples from 6 normal volunteers who were studying in the North Campus of Sun Yat-sen University were also collected, so did their clinical information...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28611327/overgrowth-of-costochondral-graft-in-temporomandibular-joint-ankylosis-reconstruction-a-retrospective-study
#8
S M Balaji, Preetha Balaji
BACKGROUND: Temporomandibular joint (TMJ) ankylosis is a situation in which the mandibular condyle is fused to the glenoid fossa by bone or fibrous tissue. The management of TMJ ankylosis has a complicated chore, and it is challenging for the maxillofacial surgeon because of technical hitches and high rate of reankylosis. Costochondral graft (CCG) is a common treatment modality for TMJ ankylosis. One of disadvantages of CCG is unpredictability of growth pattern and risk of overgrowth...
March 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28600884/physiological-effects-of-anterior-repositioning-splint-on-temporomandibular-joint-disc-displacement-a-quantitative-analysis
#9
Hui-Min Chen, Mu-Qing Liu, Adrian U-Jin Yap, Kai-Yuan Fu
BACKGROUND: Anterior repositioning splints (ARS) are used primarily for the management of temporomandibular joint (TMJ) anterior disc displacement with reduction (ADDwR). However, the exact physiological effects of ARS are still unclear. OBJECTIVE: This study investigated the short and long-term effects of ARS on disc and condyle angles / positions by metric analysis. METHODS: 22 subjects diagnosed with ADDwR were recruited. Maxillary full-coverage ARS were fabricated and MRI of TMJs were obtained before splint treatment, immediate post-insertion and 6 months after splint treatment...
June 10, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28600825/temporomandibular-dysfunction-in-adult-patients-with-myotonic-dystrophy-dm1
#10
REVIEW
C Mejersjö, S Kiliaridis
Myotonic muscle dystrophy is a systemic disease with early engagement of the facial muscles. Our aim was to study dysfunction of the temporomandibular system in patients with 'classic' dystrophia myotonica (DM1) and compare it with TMD patients and healthy controls. The study included 27 referred patients with DM1, 18 women and 9 men, aged 30-62 years, and two matched control groups: patients with temporomandibular disorders symptoms (TMD) and healthy controls, both groups were consecutive patients. The patients answered questions regarding facial pain, jaw function and dysfunction...
June 10, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28598184/surface-electromyography-before-and-after-orthognathic-surgery-and-condylectomy-in-active-laterognathia-a-case-report
#11
F Cullati, A Mapelli, G Beltramini, M Codari, C L Pimenta Ferreira, A Baj, A B Giannì, C Sforza
BACKGROUND: Condylar hyperplasia is a rare bone disease characterised by excessive development of mandibular condyle, which can lead to the development of asymmetric facial deformity together with malocclusion, mandibular deviation, TMJ and masticatory musculoskeletal system dysfunction. There is not a treatment protocol universally accepted. In order to determine the correct management, treatment and intervention timing of these patients, morphological examinations should be coupled with functional assessments...
June 2017: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28598142/arthroscopic-eminoplasty-a-new-choice-of-treatment-for-tmj-internal-derangement
#12
Blas Garcia Medina, Paolo Cariati, Pablo Galvez, Almudena Cabello Serrano, Miguel Garcia Martin
BACKGROUND: Temporomandibular joint (TMJ) internal derangement is a common disabling disorder that is often underestimated by society. The main goal of our study is to show the clinic improvement experienced by patients that underwent arthroscopic eminoplasty as a treatment for TMJ in our center. METHODS: 19 patients (1 male, 18 females) agreed to participate voluntarily in our study. These patients presented signs and symptoms of TMJ internal derangement and pathological MRI images, and underwent arthroscopic eminoplasty in our center...
June 9, 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28587937/anti-inflammatory-and-anti-nociceptive-effects-of-strontium-ranelate-on-the-zymosan-induced-temporomandibular-joint-inflammatory-hypernociception-in-rats-depend-on-tnf-%C3%AE-inhibition
#13
Sheila Moreira Alves, Susana Capistrano Abreu, Jonas Cavalcante Lemos, Francisco Isaac Fernandes Gomes, Shirley Moreira Alves, Danielle Rocha do Val, Raul Sousa Freitas, Karuza Maria Alves Pereira, Vicente de Paulo Teixeira Pinto, Gerly Anne de Castro Brito, Mirna Marques Bezerra, Gerardo Cristino-Filho, Hellíada Vasconcelos Chaves
BACKGROUND: Temporomandibular joint (TMJ) disorders show inflammatory components, heavily impacting on quality of life. Strontium ranelate has previously shown anti-inflammatory and antinociceptive effects on other experimental inflammatory pain models. Thus, we aim to investigate the strontium ranelate efficacy in reducing the zymosan-induced inflammatory hypernociception in the TMJ of rats by evaluating the TNF-α, IL-1β, and hemeoxygenase-1 (HO-1) involvement. METHODS: Wistar rats were treated with strontium ranelate (0...
March 12, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28584778/temporomandibular-joint-pain-clinical-presentations-and-response-to-conservative-treatments-in-a-nigerian-tertiary-hospital
#14
Elijah Olufemi Oyetola, Olufunlola Motunrayo Adesina, Adeniyi Oluwadaisi, Adedotun Adewale, Opeyemi Adewole, E Anizoba
AIMS AND OBJECTIVES: The aims of this study are to determine the prevalence, pattern of presentation, and response to conservative (medical) interventions among patients who presented with temporomandibular joint (TMJ) pain in a Nigerian teaching hospital. MATERIAL AND METHODS: Consecutive patients who presented in Oral Medicine and Periodontology Clinic of Obafemi Awolowo University Teaching Hospitals' Complex on account of TMJ pain from January 2015 to December 2015 were recruited for the study...
May 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28582470/estradiol-upregulates-voltage-gated-sodium-channel-1-7-in-trigeminal-ganglion-contributing-to-hyperalgesia-of-inflamed-tmj
#15
Rui-Yun Bi, Zhen Meng, Peng Zhang, Xue-Dong Wang, Yun Ding, Ye-Hua Gan
BACKGROUND: Temporomandibular disorders (TMDs) have the highest prevalence in women of reproductive age. The role of estrogen in TMDs and especially in TMDs related pain is not fully elucidated. Voltage-gated sodium channel 1.7 (Nav1.7) plays a prominent role in pain perception and Nav1.7 in trigeminal ganglion (TG) is involved in the hyperalgesia of inflamed Temporomandibular joint (TMJ). Whether estrogen could upregulate trigeminal ganglionic Nav1.7 expression to enhance hyperalgesia of inflamed TMJ remains to be explored...
2017: PloS One
https://www.readbyqxmd.com/read/28576669/impact-of-autologous-bone-marrow-derived-stem-cells-on-degenerative-changes-of-articulating-surfaces-associated-with-the-arthritic-temporomandibular-joint-an-experimental-study-in-rabbits
#16
Ahmed Abdelfatah Zaki, Mohamed Zaghloul, Mohamed E Helal, Noha Ahmed Mansour, Mohammed E Grawish
PURPOSE: This study evaluated the effect of bone marrow-derived stem cells (BMSCs) on degenerative changes of TMJ associated with bovine collagen type II (BCII) induced-arthritis. MATERIALS AND METHODS: Fifty rabbits were divided into 3 groups. Group I (n = 10) received no treatment. Group II (n = 20) was divided into 2 subgroups according to treatment type. One subgroup (n = 10) received an intra-articular (IA) injection of phosphate buffered saline (PBS) and the other (n = 10) received an IA injection of PBS plus BMSCs...
May 10, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28572422/teaching-dental-students-to-understand-the-temporomandibular-joint-using-mri-comparison-of-conventional-and-digital-learning-methods
#17
Nádia A Arús, Átila M da Silva, Rogério Duarte, Priscila F da Silveira, Mariana B Vizzotto, Heraldo L D da Silveira, Heloisa E D da Silveira
The aims of this study were to evaluate and compare the performance of dental students in interpreting the temporomandibular joint (TMJ) with magnetic resonance imaging (MRI) scans using two learning methods (conventional and digital interactive learning) and to examine the usability of the digital learning object (DLO). The DLO consisted of tutorials about MRI and anatomic and functional aspects of the TMJ. In 2014, dental students in their final year of study who were enrolled in the elective "MRI Interpretation of the TMJ" course comprised the study sample...
June 2017: Journal of Dental Education
https://www.readbyqxmd.com/read/28566870/temporomandibular-joint-dislocation-in-an-18-month-old-child
#18
Jaeson Mohanan Painatt, Ravi Veeraraghavan, Ushass Puthalath
Temporomandibular joint (TMJ) dislocation in children is extremely rare. In our case, an 18-month-old child presented with a history of inability to close her mouth. To confirm the clinical diagnosis, a computed tomogram was taken. Clinical examination and X-ray of the TMJ revealed bilateral TMJ dislocation. Bilateral TMJ reduction was achieved manually after giving analgesia and procedural sedation. This is one of the few case reports of an acute dislocation in a toddler.
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28560034/spontaneous-temporomandibular-joint-herniation-into-the-external-auditory-canal-through-a-patent-foramen-of-huschke-a-case-report
#19
Kyeong Hwa Ryu, Hye Jin Baek, Dong Gu Hur
Temporomandibular joint herniation (TMJ) can be caused by inflammation, trauma, tumor, or otologic procedures. However, spontaneous TMJ herniation can also occur as a result of a congenital bony defect in the external auditory canal (EAC), known as the patent foramen of Huschke (PFH), and occurs in 0.4% of the population. Herein, the authors present a case of spontaneous TMJ herniation through the PFH with clicking tinnitus. The patient underwent the surgical repair of bony defect in the EAC with placement of titanium mesh, and the symptom disappeared after surgery...
June 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28557358/evidence-for-central-sensitization-in-patients-with-temporomandibular-disorders-a-systematic-review-and-meta-analysis-of-observational-studies
#20
REVIEW
Roy La Touche, Alba Paris-Alemany, Amanda Hidalgo-Pérez, Ibai López-de-Uralde-Villanueva, Santiago Angulo-Diaz-Parreño, Daniel Muñoz-García
Temporomandibular disorder (TMD) is a very wide term which includes a variety of clinical issues related to the masticatory muscles, the temporomandibular joint (TMJ), and their associated structures (1) . For TMD patients the main concern is pain, and it is the most common reason for medical consultation; but pain makes also a great challenge for clinicians (2) . In fact, dysfunction of the central nervous system when processing nociceptive input has been stated as a factor involved in the onset and maintenance of pain in patients with chronic TMD (3) This article is protected by copyright...
May 29, 2017: Pain Practice: the Official Journal of World Institute of Pain
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