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https://www.readbyqxmd.com/read/28199931/a-personalized-3d-printed-prosthetic-joint-replacement-for-the-human-temporomandibular-joint-from-implant-design-to-implantation
#1
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/28181788/measuring-effectiveness-of-orthognathic-surgery-by-electromyography-a-restrospective-clinical-study
#2
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/28174061/the-effect-of-orthognathic-surgery-on-the-temporomandibular-joint-and-oral-function-a-systematic-review
#3
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/28157490/effect-of-flat-plane-splint-vertical-thickness-on-disc-displacement-without-reduction-a-retrospective-matched-cohort-study
#4
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
#5
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
#6
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/28142227/experimental-comparison-between-tractional-and-compressive-stress-on-temporomandibular-joint
#7
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/28129794/three-dimensional-morphological-changes-of-the-temporomandibular-joint-and-functional-effects-after-mandibulotomy
#8
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/28116443/-synovial-chondromatosis-in-the-temporomandibular-joint-report-of-2-cases
#9
Xin Dai, Yuan-Yong Feng, Ling-Xue Bu, Kai Song, Qian-Qian Gao, Wei Shang
The clinical manifestations, radiographic findings, intraoperative view, histopathologic features of synovial chondromatosis(SC) in the temporomandibular joint (TMJ) were summarized in 2 cases. Preoperative symptoms included preauricular pain(2/2), swelling(2/2) and limitation of mouth opening (0/2). X-ray findings showed widened joint space. The articular surface destructed and irregular stippled calcifications were seen in the infratemporal fossa by CT scan in one case. MRI showed multiple small nodular formations in the articular cavity...
October 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28087283/benefits-of-using-the-ultrasonic-bonescalpel%C3%A2-in-temporomandibular-joint-reconstruction
#10
Rebeka Silva, Rishi Gupta, Gianluca Tartaglia, Stephen Connelly
PURPOSE: The main objective of this retrospective study is to analyze and report on our operative experiences and outcomes using the ultrasonic BoneScalpel™ (BoneScalpel) versus a conventional reciprocating saw (RecipSaw) for the purpose of completing the osteotomies in total temporomandibular joint reconstruction (TJR) surgery. MATERIALS AND METHODS: 23 consecutive patients presented with a diagnosis of either degenerative joint disease (n = 23), a failing autogenous TJR (n = 1), heterotrophic bone formation (n = 1) or a subcondylar fracture (n = 1) for a total of 26 joints that received a TJR...
December 19, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27930467/ankylosis-of-the-temporomandibular-joint-and-reconstruction-with-a-costochondral-graft-in-a-patient-with-juvenile-idiopathic-arthritis
#11
Valtuir Barbosa Felix, Dhayanna Rolemberg Gama Cabral, Alana Beatriz Wanderley de Almeida, Elionai Dias Soares, Katharina Jucá de Moraes Fernandes
Juvenile idiopathic arthritis (JIA), the most common inflammatory autoimmune rheumatic disease in children, consists of a heterogeneous group of diseases with 7 distinct subtypes. Involvement of the temporomandibular joint (TMJ) in JIA varies from 17% to 87%, and can alter craniofacial growth due to damage to the condylar growth center. This study was a literature review and clinical report of bilateral ankylosis of the TMJ in a 13-year-old patient with polyarticular JIA. Temporomandibular joint reconstruction with a costochondral graft was carried out...
January 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27912927/effect-of-an-early-supervised-rehabilitation-programme-compared-with-home-based-exercise-after-temporomandibular-joint-condylar-discopexy-a-randomized-controlled-trial
#12
N Capan, S Esmaeilzadeh, A Karan, D Dıracoglu, U Emekli, A Yıldız, A Baskent, C Aksoy
The goal of rehabilitation after temporomandibular joint (TMJ) surgery is to achieve a normal range of motion. The aim of this study was to compare the impact of a comprehensive and early supervised rehabilitation programme with home-based exercise after TMJ condylar discopexy. Patients diagnosed with disc displacement without reduction were randomized to the study and control groups. After baseline assessments, the same surgical condylar discopexy procedure was applied to both groups. Following surgery, the study group patients underwent a supervised exercise programme conducted by a physiotherapist in the outpatient clinic...
March 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27908573/does-the-age-of-a-patient-affect-the-outcome-of-temporomandibular-joint-arthroscopic-surgery
#13
Jungsuk Cho, Howard Israel
PURPOSE: Although temporomandibular joint (TMJ) disorders encompass all age groups, it is generally considered to affect young to middle-age adults. The aim of this investigation was to study patients who met the criteria for TMJ arthroscopy and to determine whether there was a difference in outcomes between younger and older patients. MATERIALS AND METHODS: This was a retrospective chart review of patients who underwent TMJ operative arthroscopy. The primary variable studied was patient age...
November 9, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27889535/does-temporomandibular-joint-pathology-with-or-without-surgical-management-affect-the-stability-of-counterclockwise-rotation-of-the-maxillomandibular-complex-in-orthognathic-surgery-a-systematic-review-and-meta-analysis
#14
Essam Ahmed Al-Moraissi, Larry M Wolford
PURPOSE: This study was designed to determine the stability of counterclockwise rotation (CCWR) of the maxillomandibular complex (MMC) in orthognathic surgery with or without surgical correction of coexisting temporomandibular joint (TMJ) pathology. MATERIALS AND METHODS: The authors implemented a systematic review and meta-analysis. A search of major databases through PubMed, EMBASE, and Cochrane CENTRAL was performed. Inclusion criteria were studies that analyzed CCWR of the MMC in regard to skeletal stability after orthognathic surgery in patients with or without pre-existing TMJ pathology that was or was not surgically corrected concomitantly...
November 4, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27876531/patient-centered-quality-of-life-measures-after-alloplastic-temporomandibular-joint-replacement-surgery
#15
X Alakailly, D Schwartz, N Alwanni, C Demko, M A Altay, Y Kilinc, D A Baur, F Quereshy
The purpose of this study was to evaluate patient-reported outcome measures of quality of life (QoL) for patients with end-stage temporomandibular joint (TMJ) disease who have undergone TMJ prosthetic replacement. The records of 36 patients who had undergone alloplastic total joint replacement procedures were analyzed. Patients were treated using either TMJ Concepts or Biomet/Lorenz prosthetics. Patients were asked to complete a 12-item TMJ-S-QoL survey, which encompassed questions pertaining to pain, speech, chewing function, and various aspects of social life and mental health...
February 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27836550/temporomandibular-joint-tmj-arthroscopic-lysis-and-lavage-outcomes-and-rate-of-progression-to-open-surgery
#16
Omar Breik, Vishakha Devrukhkar, George Dimitroulis
PURPOSE: Arthroscopic lysis and lavage has been shown to be effective in the management of a variety of TMJ (Temporomandibular joint) diseases. The purpose of this study was to evaluate the medium to long-term outcomes of TMJ arthroscopic lysis and lavage and determine factors associated with progression to open surgery. MATERIALS AND METHODS: A retrospective cohort study of a single operator series was performed over a 6-year period from 2006 to 2012. The variables of gender, age and category (Dimitroulis classification) were compared to evaluate factors associated with success of arthroscopy and progression to open surgery...
December 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27818803/eminectomy-for-habitual-luxation-of-the-temporomandibular-joint-with-sedation-and-local-anesthesia-a-case-series
#17
Joe Iwanaga, Yoshiaki Nakamura, Jingo Kusukawa, R Shane Tubbs
Eminectomy which is one of the popular and most effective treatments for habitual temporomandibular joint luxation was first described by Myrhaug in 1951. There are few reports which described eminectomy being performed under local anesthesia and conscious sedation. We present a case series of habitual luxation of the TMJ treated by eminectomy performed under local anesthesia and conscious sedation and general anesthesia. Five patients were examined and found to have recurrent luxation of the TMJ. The age of patients ranged from 18 to 93 years...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27774442/the-sequential-management-of-recurrent-temporomandibular-joint-ankylosis-in-a-growing-child-a-case-report
#18
Jung-Won Cho, Jung-Hyun Park, Jin-Woo Kim, Sun-Jong Kim
BACKGROUND: Temporomandibular joint (TMJ) ankylosis in children often leads to facial deformity, functional deficit, and negative influence of the psychosocial development, which worsens with growth. The treatment of TMJ ankylosis in the pediatric patient is much more challenging than in adults because of a high incidence of recurrence and unfavorable growth of the mandible. CASE REPORT: This is a case report describing sequential management of the left TMJ ankylosis resulted from trauma in early childhood...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27770969/a-current-overview-of-materials-and-strategies-for-potential-use-in-maxillofacial-tissue-regeneration
#19
REVIEW
Hossein E Jazayeri, Mohammadreza Tahriri, Mehdi Razavi, Kimia Khoshroo, Farahnaz Fahimipour, Erfan Dashtimoghadam, Luis Almeida, Lobat Tayebi
Tissue regeneration is rapidly evolving to treat anomalies in the entire human body. The production of biodegradable, customizable scaffolds to achieve this clinical aim is dependent on the interdisciplinary collaboration among clinicians, bioengineers and materials scientists. While bone grafts and varying reconstructive procedures have been traditionally used for maxillofacial defects, the goal of this review is to provide insight on all materials involved in the progressing utilization of the tissue engineering approach to yield successful treatment outcomes for both hard and soft tissues...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27769739/open-surgery-assisted-with-arthroscopy-to-treat-synovial-chondromatosis-of-the-temporomandibular-joint
#20
G Bai, C Yang, Y Qiu, M Chen
Open surgery and arthroscopy for the treatment of synovial chondromatosis (SC) of the temporomandibular joint (TMJ) have their advantages and disadvantages. The aim of this study was to report the application and results of the combined use of these two methods in the treatment of SC and the indications for use. A total of 36 patients with magnetic resonance imaging (MRI) confirmation of SC, treated from 2010 to 2015, were included. Patients with tumours in the upper articular cavity and with the extended margin of the medial groove still in-between the medial crest of the condyle and infratemporal space on coronal MRI were selected to undergo open surgery with the assistance of arthroscopy to clear the loose bodies and affected synovium...
February 2017: International Journal of Oral and Maxillofacial Surgery
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