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https://www.readbyqxmd.com/read/28210410/a-case-of-glenoid-fossa-fracture-progressive-ankylosis-total-joint-reconstruction-with-alloplastic-prosthesis-to-normalized-function-including-evaluation-with-f18-pet-ct-a-four-year-follow-up
#1
Björn Lindell, Andreas Thor
Temporomandibular joint replacement (TJR) with alloplastic prosthesis has shown promising long-term results in end stage joint disorders. We present a case of young woman with painful ankylosis that where reconstructed with TJR, due to a complex mandibular fracture with dislocation of the left condyle into the middle cranial fossa two years earlier. At the age of 18 the subject underwent a total joint replacement with custom-made alloplastic TMJ prosthesis. To determine the bone response and remodeling activity around the prosthesis, a F18 PET/CT-scan was used...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28209481/botulinum-toxin-type-a-reduces-inflammatory-hypernociception-induced-by-arthritis-in-the-temporomadibular-joint-of-rats
#2
Victor Ricardo Manuel Muñoz Lora, Juliana Trindade Clemente-Napimoga, Henrique Ballassini Abdalla, Cristina Gomes Macedo, Giancarlo de la Torre Canales, Celia Marissa Rizzatti Barbosa
OBJECTIVE: This study aimed to investigate the antinociceptive effects of Botulinum toxin type A (BoNT-A) on persistent inflammatory hypernociception induced by arthritis in the temporomandibular joint (TMJ) of rats. MATERIAL AND METHODS: Wistar rats were induced to persistent inflammatory hypernociception in the left TMJ. Then, animals were treated with intra-TMJ injections of BoNT-A, using doses of 3.5, 7 and 14 U/kg. Saline was used as control group. Behavioral tests were applied to evaluated the effect of BoNT-A in the inflammatory hypernociception...
February 13, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28208055/fate-of-the-coronoid-process-after-coronoidotomy-and-its-effect-on-the-interincisal-opening-a-clinical-and-radiologic-assessment
#3
Sujata Mohanty, Sanchaita Kohli, Jitender Dabas, Rudra Deo Kumar, Ranjeet Bodh, Sandeep Yadav
PURPOSE: Coronoidotomy is used to treat several conditions, including coronoid hyperplasia and temporomandibular joint (TMJ) ankylosis. The stability of the outcome, however, is considered questionable because of the risk of reattachment of the coronoid process. This study aims to radiographically and clinically evaluate the long-term anatomic and physiological outcome after coronoidotomy. MATERIALS AND METHODS: In 17 patients with unilateral TMJ ankylosis, 25 coronoidotomies were performed as an additional maneuver to relieve trismus after ankylosis release...
January 20, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28199931/a-personalized-3d-printed-prosthetic-joint-replacement-for-the-human-temporomandibular-joint-from-implant-design-to-implantation
#4
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
#5
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/28198654/morphological-changes-in-the-temporomandibular-joint-after-orthodontic-treatment-for-angle-class-ii-malocclusion
#6
Daigo Koide, Kazuhiro Yamada, Ayane Yamaguchi, Toru Kageyama, Akira Taguchi
OBJECTIVE: The aim of this study was to examine the morphological temporomandibular joint (TMJ) changes that occur after orthodontic treatment in patients with Angle Class II malocclusion. METHODS: The post-treatment changes in TMJ morphology were analyzed, based on TMJ cephalometric laminographs in 19 patients with Angle Class II malocclusion and labial inclination of the upper incisors after premolar extraction. RESULTS: The condylar pass angle, articular eminence to the Frankfort horizontal plane angle, and total, upper, and lower heights of the articular fossa increased significantly on both sides after treatment and retention...
February 15, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28192626/oral-and-mandibular-manifestations-in-the-ehlers-danlos-syndromes
#7
John Mitakides, Brad T Tinkle
The Ehlers-Danlos syndromes (EDS) are hereditary disorders that affect the connective tissue and collagen structures in the body. Several types of EDS have been identified. Oral and mandibular structures, which include oral soft tissue, dentition, facial and head pain, and the functioning of the temporomandibular joint (TMJ), are variably affected in the various types of EDS. These various manifestations of EDS have been noted for many years, but newer diagnostic techniques and studies are shedding additional light on the challenges faced by EDS patients in the area of oral and mandibular disorders...
February 13, 2017: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
https://www.readbyqxmd.com/read/28181788/measuring-effectiveness-of-orthognathic-surgery-by-electromyography-a-restrospective-clinical-study
#8
Giovanni B Grossi, Umberto Garagiola, Franco Santoro
BACKGROUND: This study investigates retrospectively if the initial electromyography (EMG) status of patients who underwent orthognathic surgery correlates with the extent of post-surgical EMG functional recovery. METHODS: Clinical records concerning 20 patients who underwent Le Fort I and/or sagittal osteotomy of the mandibular ramus to correct skeletal dental class III malocclusions were retrieved and pre-surgical and post-surgical EMG data were analyzed and compared...
February 9, 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28176754/magnetic-resonance-imaging-mri-evaluation-for-anterior-disc-displacement-of-the-temporomandibular-joint
#9
Zhongjun Yang, Mingguo Wang, Yingwei Ma, Qingguo Lai, Dongdong Tong, Fenghe Zhang, Lili Dong
BACKGROUND Magnetic resonance imaging (MRI) is the criterion standard imaging technique for visualization of the temporomandibular joint (TMJ) region, and is currently considered the optimum modality for comprehensive evaluation in patients with temporomandibular joint disorder (TMD). This study was aimed at finding the value of MRI in pre-clinical diagnosis of TMJ disc displacement. MATERIAL AND METHODS Patients primarily diagnosed as having anterior disc displacement by clinical symptoms and X-ray were selected in the present study...
February 8, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28174061/the-effect-of-orthognathic-surgery-on-the-temporomandibular-joint-and-oral-function-a-systematic-review
#10
REVIEW
E C Te Veldhuis, A H Te Veldhuis, W M Bramer, E B Wolvius, M J Koudstaal
The objective of this systematic review was to examine the effect of orthognathic surgery (OS) on the temporomandibular joint and oral function. Electronic databases were systematically searched for studies published until October 2015. Articles were assessed against predefined inclusion criteria. The included papers were divided into four groups based on the type of OS performed. The following items were recorded: quality of evidence using the Oxford Centre for Evidence-Based medicine (CEBM) criteria, number of patients, presence/absence of controls, mean age at treatment, follow-up time, clinical examination findings, bite force, use of the Helkimo Index and Research Diagnostic Criteria for Temporomandibular Disorders, imaging findings, and patient questionnaire results...
February 4, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28171766/expression-of-hypoxia-inducible-factor-2-alpha-in-overloaded-stress-induced-destruction-of-mandibular-condylar-chondrocytes
#11
Wen Li, Yanhui Liu, Wanghui Ding, Tan Long, Jiejun Shi
OBJECTIVE: To study the protein expression of HIF-2α in condylar chondrocytes under the different stress loading, to investigate the possible effects of HIF-2α involved in the mortality of condylar chondrocytes under overloaded- stress. MATERIALS AND METHODS: Chondrocytes were isolated from TMJ condylar cartilage and cultured in hypoxia-incubator. Chondrocytes were divided into 4 groups: 0, 1000, 2000, 3000 ustrain group, which was subjected to cyclic tensile strain (CTS) of 0...
January 18, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28169267/brisement-force-in-fibrous-ankylosis-a-technique-revisited
#12
Udupikrishna M Joshi, Satishkumar G Patil, Kundan Shah, Soumya Allurkar
Fibrous ankylosis is a common complication of trauma to the temporomandibular joint (TMJ) in children. Proper treatment and regular follow-up is necessary for its successful management. This report highlights a case of posttraumatic fibrous ankylosis successfully managed with brisement force-gradual tractional forces applied to the TMJ under local anesthesia without any associated complications. Mouth opening increased significantly from 15 to 35 mm. The patient was advised to perform rigorous physiotherapy at home, to maintain interincisal opening of 35 mm...
November 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28157490/effect-of-flat-plane-splint-vertical-thickness-on-disc-displacement-without-reduction-a-retrospective-matched-cohort-study
#13
Shang-Lun Lin, Shang-Liang Wu, Shun-Yao Ko, Ching-Yu Yen, Jung-Wu Yang
PURPOSE: The efficacy of occlusal splints for treating temporomandibular disorders (TMDs) remains controversial. This study aimed to evaluate and compare the effectiveness of flat-plane splints (FPSs) with a vertical thickness of 3 mm (VT3) and 5 mm (VT5) in treating disc displacement without reduction (DDWOR). MATERIALS AND METHODS: This retrospective matched-cohort study selected the study participants from 400 TMD patients treated in the Department of Oral and Maxillofacial Surgery of Tainan Sin-Lau Hospital, Tainan, Taiwan, between August 2013 and July 2015...
January 5, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28153614/internal-maxillary-artery-preoperative-embolization-using-nbca-and-pushable-coils-for-temporomandibular-joint-ankylosis-surgery-technical-note
#14
Yazan J Alderazi, Darshan Shastri, John Wessel, Melvin Mathew, Tareq Kass-Hout, Shahid R Aziz, Charles J Prestigiacomo, Chirag D Gandhi
INTRODUCTION: Temporomandibular joint (TMJ) ankylosis causes disability through impaired digestion, mastication, speech and appearance. Surgical treatment increases range of motion with resultant functional improvement. However, substantial perioperative blood loss can occur, up to three liters, if the internal maxillary artery (IMAX) is injured as it traverses the ankylotic mass. Achieving hemostasis is difficult due to limited proximal IMAX access and poor visualization. Our aim is to investigate the technical feasibility and preliminary safety of preoperative IMAX embolization in patients undergoing TMJ ankylosis surgery...
January 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28149452/tmj-inferior-compartment-arthroplasty-procedure-through-a-25-year-follow-up-functional-arthroplasty
#15
Piero Cascone, Valerio Ramieri, Paolo Arangio, Valentino Vellone, Achille Tarsitano, Claudio Marchetti
OBJECTIVE: The purpose of this study was to assess the outcomes of temporomandibular joint (TMJ) "functional arthroplasty" on the inferior compartment and disc reposition as a surgical treatment for internal derangement (ID). PATIENTS AND METHODS: By retrospective chart review, all patients who had TMJ surgery on the inferior compartment for TMJ ID from 1985 to 2010 were identified. Their charts were reviewed and subjective data as well as objective data was collected...
July 2016: Annali di Stomatologia
https://www.readbyqxmd.com/read/28147322/vegf-promotes-cartilage-angiogenesis-by-phospho-erk1-2-activation-of-dll4-signaling-in-temporomandibular-joint-osteoarthritis-caused-by-chronic-sleep-disturbance-in-wistar-rats
#16
Yabing Dong, Gaoyi Wu, Ting Zhu, Hongyu Chen, Yong Zhu, Guoxiong Zhu, Fabin Han, Huaqiang Zhao
Chronic sleep disturbance (CSD) has been linked to the development of temporomandibular joint osteoarthritis (TMJ-OA). While the pathogenesis of TMJ-OA is unclear, recent studies indicate that osteochondral angiogenesis is important. We developed a rat model of CSD induced TMJ-OA to investigate the changes caused by sleep disturbance and to correlate them with vascular invasion in the TMJ. We found pathological alterations and an increased microvessel density in the rat TMJ following CSD. VEGF, Dll4 and p-ERK1/2, the expression of angiogenic factors, were highly expressed in the rat mandibular condylar cartilage and their expression increased with CSD...
January 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28142227/experimental-comparison-between-tractional-and-compressive-stress-on-temporomandibular-joint
#17
Shinnosuke Nogami, Kensuke Yamauchi, Yoshinaka Shimizu, Bunichi Hirayama, Akira Kumasaka, Masahiro Iikubo, Hiroyuki Kumamoto, Tetsu Takahashi
OBJECTIVE: We experimentally compared the effects of compressive and tractional mechanical stress on the temporomandibular joint (TMJ) of rabbits to assess the etiology of progressive condylar resorption. MATERIALS AND METHODS: We performed a cortical osteotomy using custom-made devices that were lengthened by 0.25 mm every 12 h for 1 week after surgery. During this time, the rabbit TMJ was under compressive or tractional mechanical stress. The samples in each group were examined using micro-computed tomography and histological staining...
January 31, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28132759/temporomandibular-lavage-versus-nonsurgical-treatments-for-temporomandibular-disorders-a-systematic-review-and-meta-analysis
#18
REVIEW
Carl Bouchard, Jean-Paul Goulet, Mehdi El-Ouazzani, Alexis Fournier-Turgeon
PURPOSE: To investigate the efficacy of temporomandibular joint (TMJ) lavage (arthrocentesis or arthroscopy) for the treatment of temporomandibular disorders in reducing pain and improving jaw motion. PATIENTS AND METHODS: We performed a systematic review of the literature and meta-analysis of randomized controlled trials (RCTs) comparing TMJ lavage with conservative measures. The data sources were MEDLINE, Embase, CENTRAL (Cochrane Central Register of Controlled Trials), Scopus, Web of Science, and reference lists of relevant articles...
January 4, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28129794/three-dimensional-morphological-changes-of-the-temporomandibular-joint-and-functional-effects-after-mandibulotomy
#19
Mohammed A Q Al-Saleh, Kumaradevan Punithakumar, Manuel Lagravere, Pierre Boulanger, Jacob L Jaremko, John Wolfaardt, Paul W Major, Hadi Seikaly
BACKGROUND: The midline and paramedian mandibulotomy are surgical procedures that divide the mandibular bone into two halves and disconnects the condylar heads of the TMJ from each other. This study aimed to prospectively evaluate the temporomandibular joint (TMJ) functional and morphological changes after mandibulotomy using a reconstructed 3D models of the TMJ. METHODS: Sixteen adult patients diagnosed with oral and oropharyngeal tumors with planned surgical mandibulotomy (test group, 9 patients) or transoral (control group, seven patients) treatments were included in the study...
January 28, 2017: Journal of Otolaryngology—Head & Neck Surgery
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
#20
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
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