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Search Results: 1 - 10 of 3549 matches for " temporomandibular joint arthroplasty "
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X-ray digital linear tomosynthesis imaging  [PDF]
Tsutomu Gomi, Hiroshi Hirano, Masahiro Nakajima, Tokuo Umeda
Journal of Biomedical Science and Engineering (JBiSE) , 2011, DOI: 10.4236/jbise.2011.46056
Abstract: Aims: The purpose of this review includes the fol-lowing: 1) to identify indications for volumetric X-ray digital linear tomosynthesis by using a filtered back projection (FBP) algorithm and 2) to compare X-ray digital linear tomosynthesis, X-ray digital ra-diography, conventional tomography, and computed tomography. Review: The methods include the fol-lowing: 1) an overview of the tomosynthesis system in comparison with conventional X-ray imaging tech-nology; 2) an overview of the properties of diagnostic imaging for the chest, hip joint, and temporomandibular joint when imaging overlying structures and their effect of various artificial images; and 3) a review of each system. Summary: Tomosynthesis is worthy of further evaluation because of its flexibility and ability to suppress streak artifacts through an appropriate choice of an FBP algorithm. Tomosynthesis may be considered the imaging technique of choice for investigation of bone changes and detection of pulmonary nodules. Understanding the potential of tomosynthesis imaging will improve diagnostic accuracy in clinical applications.
Tratamiento de la anquilosis de la articulación temporomandibular por artroplastia simple
Cavalcanti do Egito Vasconcelos,Belmiro; Viana Bessa-Nogueira,Ricardo; Vago Cypriano,Rafael;
Medicina Oral, Patología Oral y Cirugía Bucal (Internet) , 2006,
Abstract: purpose: the purpose of this paper is to show that gap arthroplasty improve mouth opening when treating tmj ankylosis. patients and methods: eight patients with tmj ankylosis were treated by gap arthroplasty. the patients were evaluated by at least twenty-four months (minimum 24 and maximum 48 months). results: of the eight patients (eleven joints), five (62.5%) had unilateral involvement and three patients (37.5%) had bilateral involvement. the mean age was 20 years ± 9 (range 3 to 30 years). the mean maximal incisal opening (mio) in the preoperative period was 9.25 ± 6.41 mm and in the postoperative period it was 29.88± 4.16 mm. the complication of temporary facial nerve paresis was encountered in two patients (25%). no recurrence was observed in our series. conclusions: trauma was the major cause of tempomandibular joint ankylosis in our sample. gap arthroplasty showed good results when treating tmj ankylosis.
Surgery of temporomandibular joint under local anaesthesia
Gajiwala Kalpesh
Indian Journal of Plastic Surgery , 2008,
Abstract: Temporomandibular joint ankylosis is a debilitating disorder arising from an inability to open the mouth. This leads to poor nutrition, poor dental hygiene, and stunted growth. Anaesthesia, especially general anaesthesia, is very difficult to administer. There is a lack of direct visualization of the vocal cords, tongue fall following relaxation, and an already narrowed passage due to a small mandible, which makes even the blind nasal intubation difficult. There are various techniques described in literature to overcome these challenges, failing which, one needs to do tracheostomy. All the risks of difficult intubation and general anaesthesia can be avoided if the surgery is done under local anaesthesia. A simple but effective method of successful local anaesthesia is described, which allows successful temporomandibular joint reconstruction.
Interposition arthroplasty in post-traumatic temporomandibular joint ankylosis: A retrospective study
Tripathy Satyaswarup,Yaseen Mohd,Singh Nitya,Bariar L
Indian Journal of Plastic Surgery , 2009,
Abstract: Temporomandibular joint ankylosis which is most frequently caused by trauma, presents with restriction in mouth opening in early stages and if children are the victim and not treated early, it presents with growth retardation of the involved mandibular side. Various methods are available for surgical correction. We have reviewed our experience with the efficacy of different interpositional materials in post-traumatic cases in our set up with special reference to temporal fascia over last three years. Twenty seven patients with history of trauma, mostly fall from height, have been studied. They were evaluated clinically and by computed tomography (CT) scan, orthopantogram and x- ray lateral oblique view. The most common age group was 10-15 years with mean 12.5 years and male to female ratio 1:2. Preoperative mouth opening (inter incisor distance) was 1-2 mm in 17 cases and 2-4 mm in 10 cases. We have used temporalis fascia in nine, costochondral graft in seven, silastic sheets in five and T-plates in six cases. Post-operatively, adequate mouth opening of 30-50 mm was observed in six months follow-up and more than 50 mm at one year follow up in 21 cases out of which nine cases have interpositional material as temporalis fascia alone. The postoperative period was uneventful in all cases and none required re-operation for recurrences. We conclude that interpositional arthroplasty, especially with pedicled temporal fascia, is the best method to prevent recurrences and establish good mouth opening and full range of jaw movements.
Tratamiento simultáneo de anquilosis temporomandibular unilateral congénita y del microlaterognatismo asociado Simultaneously treament of congenital unilateral temporomandibular ankylosis and consecutive microlatherognathism
José Felipe Basulto Varela,Librado Vergara Piedra,Salma Dago Farah,Jorge L Cabrera
Revista Cubana de Estomatolog?-a , 2013,
Abstract: Este artículo tiene como objetivo reportar los resultados obtenidos a corto y largo plazo, del tratamiento con enfoque multidisciplinario de una anquilosis unilateral congénita de la articulación temporomandibular asociada a un síndrome de malformación embrionaria, en un ni o de 12 a os de edad, en el que se utilizó un distractor externo bidimensional con un doble propósito: como fijador para mantener el espacio logrado con la artroplastia y como distractor para elongar la rama mandibular hipotrófica, activado 5 días después de la osteotomía, con el objetivo de eliminar la anquilosis y el microlaterognatismo mandíbular consecutivo de ella, simultaneamente de manera funcional y dinámica. The paper reports the short- and long-term results obtained from the multidisciplinary treatment of a congenital unilateral ankylosis of the temporomandibular joint associated to an embryonic malformation in a 12-year-old boy, using an external bidimensional distraction device with a two-fold purpose: as fixator to maintain the space achieved by arthroplasty, and as distractor to elongate the hypotrophic mandibular branch, activated 5 days after osteotomy, with the purpose of eliminating ankylosis and consecutive mandibular microlaterognatism, both functionally and dynamically.
Displacement of the non-reduction temporomandibular disk with limitation of opening. Story of a clinical case—Follow up five years  [PDF]
Gustavo Helder Vinholi, Túlio Marcos Kalife Coêlho, Elizeu Insaurralde, Anísio Lima da Silva, Gustavo Adolfo Pereira Terra, Luís Gustavo Nunes Dias de Pinho
Health (Health) , 2014, DOI: 10.4236/health.2014.65066

Displacement of the non-reduction disk with limitation of opening (DDwLO) can be treatment of the non-surgical form. However, it required scientific and clinic knowledge of diagnostic area of the disorders temporomandibulares. This study was performed with the patient CN, 18 years, white, female, who went to the orofacial pain ambulatory with complaints of extreme pain on the right temporomandibular joint (TMJ) and limitation of maximum opening of 29 mm with shift to right, which she has been suffering for at least three years. After a criterion anamnese the diagnosis hypothesis found was a displacement of the non-reduction disk with limitation of opening. The treatment was based on infiltration in the right TMJ with anesthesic followed by mandibular manipulation. After the therapeutic conduct the patient presented clinical signals of normality with absence of trismus and mandibular movement without shift to right. The patient was followed up during five years not presenting return of the pathology.

Preoperative Anemia Is Associated with Increased Mortality Following Primary Unilateral Total Joint Arthroplasty  [PDF]
Michael D. Herrick, Brian D. Sites, Melissa M. Masaracchia, Wayne E. Moschetti
Open Journal of Anesthesiology (OJAnes) , 2016, DOI: 10.4236/ojanes.2016.66015
Abstract: Background: Total joint arthroplasty is a commonly performed procedure for end-stage osteoarthritis. Preoperative anemia is a well-characterized and potentially modifiable risk factor for morbidity and mortality in non-cardiac surgery. This retrospective cohort study identified the prevalence of anemia in our total joint arthroplasty population and investigated if there was an association with all-cause mortality. Study Design and Methods: Using an electronic medical record, we examined all patients who underwent a primary unilateral total joint arthroplasty at Dartmouth-Hitchcock Medical Center from January 1, 2011 through July 1, 2015. Preoperative anemia thresholds were defined according to the World Health Organization as 12 mg/dl for women and 13 mg/dl for men. Kaplan-Meier survival analyses were performed to examine the relationship between preoperative anemia and all-cause mortality. Cox proportional hazards were calculated for various models adjusting for potential confounders. Results: 439 of the 3247 patients (13.5%) that underwent total joint arthroplasty met the preoperative definition for anemia. 48 patients (1.48%) died during 6470 patient years of follow up, generating an incidence rate of 7.4 deaths per 1000 patient years. The crude hazard ratio for death in anemic patients was 3.42 (95% CI 1.89, 6.82). In multiple models adjusting for various health related confounders, preoperative anemia was associated with a roughly two-fold increase risk of death compared to non-anemic patients. Conclusion: Preoperative anemia is prevalent in our population and it is associated with increased postoperative mortality in total joint arthroplasty patients, even when adjustments are made for significant co-morbidities.
Ruídos articulares e sinais de disfun??o temporomandibular: um estudo comparativo por meio de palpa??o manual e vibratografia computadorizada da ATM
CONTI, Paulo César Rodrigues;MIRANDA, Jo?o Evandro da Silva;ORNELAS, Flávia;
Pesquisa Odontológica Brasileira , 2000, DOI: 10.1590/S1517-74912000000400011
Abstract: both vibrational analysis and clinical examination have been claimed to identify intracapsular temporomandibular joint (tmj) disorders, particularly disc displacements. the purpose of this study was to evaluate the interexaminer consensus on detecting tmj sounds and to compare this with the results obtained through a computerized system (sonopak). the sample was composed of 45 people and it was divided in 2 groups: an experimental group of 24 patients presenting with tmj complaints (sounds and/or pain), and a control group of 19 individuals with no obvious signs or symptoms of temporomandibular disorders. sixty-seven percent of the patients were females with a mean age of 36 years. the control group was gender- and age-matched with the test group. temporomandibular joint electrovibratography (jva) was performed on the whole sample by one examiner. this was followed by light manual palpation of the tmjs by 2 examiners, who were not calibrated and were not aware of the results of the previous vibratographic (eav) examination. both examiners were unaware of which group was being examined. indices of agreement and the cohen?s kappa test were used to analyze the data. a prevalence of 62.5% and 42.1% of tmj sounds was found for the experimental and control groups, respectively. indices of agreement ranged from 32% to 100% and kappa index ranged from 0 to 0.4 for all conditions investigated (opening and reciprocal clicking, crepitation, and terminal thud). although acceptable agreement was achieved, the values for kappa index were considered poor for all variables (fair agreement is considered between 0.4 and 0.75). temporomandibular joint sounds are commonly found in both patients and nonpatients, but their detection and classification are difficult, even when an electronic device is employed. although the sample in this study was small, the results indicate that electrovibratography (jva) should be used with caution, and that interexaminer calibration may improve the ide
Análise da sintomatologia em pacientes com disfun??es intra-articulares da articula??o temporomandibular
DONEGá, Sílvio Henrique de Paula;CARDOSO, Renato;PROCóPIO, Antonio Sílvio Font?o;LUZ, Jo?o Gualberto de Cerqueira;
Revista de Odontologia da Universidade de S?o Paulo , 1997, DOI: 10.1590/S0103-06631997000500012
Abstract: the study analyzed the symptomatology in patients with intra-articular disorders of the temporomandibular joint. the most frequent complaint was pain in the preauricular region (40.7%). articular pain (63.2%) and articular sounds (83.3%) were the most common findings during clinical examination. muscular pain occurred particularly in the medial and lateral pterygoid muscles and at the insertion of the temporalis muscle. the most frequent articular sound was clicking (66.6%). there was a decrease in extent of protrusion among the mandibular border positions.
The Professional Medical Journal , 2011,
Abstract: Temporomandibular joint (TMJ) ankylosis is a distressing and disabling disorder due to fibrous or osseous adhesions between the bony components of the joint . It not only causes the inability to open the month but also alters the eating habits, speech ability, and cause malocclusion, facial disfigurement and psychological disorders . The main cause is trauma in the childhood . The treatment is early and aggressive surgical operation . So many surgical procedures have been described but no one has been proven entirely satisfactory .
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