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1.
Int. j. morphol ; 38(2): 458-460, abr. 2020.
Artículo en Inglés | LILACS | ID: biblio-1056462

RESUMEN

The study of the temporomandibular joint (TMJ) through imaging, is useful for the analysis of intra-articular procedures in view of its complex anatomy. Precise knowledge of the depth at which the TMJ is located is required to achieve an ideal puncture technique. The aim of this study was to measure the depth of the TMJ through magnetic resonance imaging (MRI) in patients with temporomandibular disorders (TMD). A cross-sectional study was conducted, selecting 150 MRI of patients who attended the Polyclinic for TMD and Orofacial Pain. The variables analyzed were: 1) Depth of the right and left TMJ; 2) Age of the patients; and 3) Sex of the patients. Of the total MR, 114 corresponded to women with a median age of 23 years. The median depth of the right TMJ was 17.16 mm and median on the left side was 16.98 mm, there was no statistically significant difference (p> 0.05) but there was a strong correlation (r = 0.842). There were no differences between the depths and the sex of the patients in both the right and left TMJ. There was no correlation between age and depth of TMJ. In conclusion the depth of the right and left condyle are highly correlated, being approximately 17 mm according to the population studied. There is no association between patient age and condylar depth, and there are no differences in average according to sex.


El estudio por imágenes de la articulación temporomandibular (ATM) es útil para el análisis de procedimientos intra-articulares debido a la compleja anatomía que presenta. Se requiere un conocimiento preciso de la profundidad a la cual se encuentra la ATM para una adecuada técnica de punción. El objetivo de este estudio fue medir la profundidad de laATM en relación a la piel a través de resonancia magnética (RM) en pacientes con trastornos temporomandiblaes (TTM). Se realizó un estudio transversal, seleccionando 150 RM de pacientes que asistieron al Policlínico de TTM y Dolor Orofacial. La variables analizadas fueron: 1) Profundidad de la ATM derecha e izquierda; 2) Edad de los pacientes; y 3) Sexo de los pacientes. Del total de RM, 114 correspondían a mujeres con una mediana de edad de 23 años. La mediana de la profundidad de la ATM derecha fue de 17,16 mm y la mediana del lado izquierdo fue de 16,98 mm, no hubo una diferencia estadísticamente significativa (p>0,05) pero si una fuerte correlación (r=0,842). No hubo diferencias entre las profundidades y el sexo de los pacientes tanto en la ATM derecha como en la izquierda. No hubo correlación entre la edad y la profundidad de la ATM. La profundidad de los cóndilos derecho e izquierdo están altamente correlacionados, siendo 17 mm aproximadamente en la población estudiada. No existe asociación entre la edad de los pacientes y la profundidad condilar, y no hay diferencias en promedios por sexo.


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Imagen por Resonancia Magnética , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Cóndilo Mandibular/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/patología , Estudios Transversales
2.
Int. arch. otorhinolaryngol. (Impr.) ; 24(1): 68-72, Jan.-Mar. 2020. tab, graf
Artículo en Inglés | LILACS | ID: biblio-1090546

RESUMEN

Abstract Introduction The prevalence of tinnitus is higher in individuals with temporoman- dibular joint disorder (TMD) than in the general population. Magnetic resonance imaging (MRI) of the temporomandibular joint (TMJ) is the method of choice for investigation, and it has been hypothesized that specific MRI findings might be observed in TMD with comorbid tinnitus. Objective To comparatively describe MRI findings in patients with TMD with and without tinnitus, identifying the most common TMJ alterations and determining whether a correlation exists between severity of TMD and tinnitus. Methods A cross-sectional study of 53 adult patients with bilateral or unilateral TMD (30 with and 23 without tinnitus). The association between tinnitus and morphological aspects of TMD (changes in condylar morphology, articular eminence morphology, and disc morphology), disc displacement (with/without reduction), condylar translation, and intra-articular effusion was analyzed on MRI images. Results The mean patient age was 46.12 ± 16.1 years. Disc displacement was the most common finding in both groups (24 patients with tinnitus versus 15 without; p = 0.043). Only the frequency of disc displacement with reduction was significantly different between groups. Conclusion Additional imaging techniques should be explored to detect specific aspects of the relationship between tinnitus and TMD.


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Articulación Temporomandibular/diagnóstico por imagen , Acúfeno/diagnóstico por imagen , Imagen por Resonancia Magnética , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Audiometría de Respuesta Evocada , Audiometría de Tonos Puros , Articulación Temporomandibular/patología , Acúfeno/diagnóstico , Acúfeno/etiología , Índice de Severidad de la Enfermedad , Trastornos de la Articulación Temporomandibular/complicaciones , Trastornos de la Articulación Temporomandibular/patología , Estudios Transversales
3.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 55(2): 93-97, 2020 Feb 09.
Artículo en Chino | MEDLINE | ID: mdl-32074669

RESUMEN

Objective: To evaluate the application of calcium suppressed (CaSupp) spectral CT technique in evaluating disk position and measuring the thickness of the posterior band of temporomandibular joint (TMJ). Methods: The twenty-three temporomandibular disorder patients [mean age 23(12~62) years, male/female=14/9] were performed with oblique sagittal and coronal proton density weighted imaging (PDWI) and spectral CT scans from February to July, 2019 in Department of Radiology, Hainan Hospital of General Hospital of Chinese PLA, and 45 TMJ joints were evaluated. The subjects were classified into two groups according to the scanning modalities: MRI measurement group and CaSupp spectral-based CT group. The CaSupp technique were applied with the spectral-based CT images and CaSupp images were generated. The oblique sagittal and coronal CaSupp imaged were reformatted by perpendicular to the long axis of the condyle. The TMJ disk positions were evaluated on oblique sagittal and coronal images, and the maximal disk thickness were measured on the oblique sagittal images. Results: The joint position was basically consistent on MRI and CaSupp images for the 45 TMJ joints. The intra-class coefficient value was 0.843 (0.712, 0.914) for the measurement of the posterior band of the TMJ disk between MRI and CaSupp images. Bland-Altman presented that the [95.6% (43/45)] points with the difference located in the 95% agreement interval. Wilcoxon paired text demonstrated that there was no significant different for the thickness of the posterior band between MRI [2.57 (1.76, 3.65) mm] and CaSupp images [2.67 (1.74, 4.56) mm] (P=0.07). Conclusions: The CaSupp spectral-based CT could be used to evaluated the TMJ disk position and the thickness of the posterior band.


Asunto(s)
Disco de la Articulación Temporomandibular/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Adolescente , Adulto , Calcio , Niño , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Adulto Joven
5.
Clin Oral Investig ; 24(1): 221-227, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31079244

RESUMEN

OBJECTIVES: To characterize the relationship between radiographic and clinical characteristics of patients with temporomandibular joint (TMJ) osseous changes. MATERIALS AND METHODS: TMJ cone beam computed tomography (CBCT) images of 73 patients (142 joints) with changes in osseous component of TMJ were included in this study. Based on both clinical and radiographic findings, each TMJ was diagnosed as either non-degenerative joint disease (non-DJD) or degenerative joint disease (DJD) according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) criteria. The DJD group was further classified into two subgroups of osteoarthritis and osteoarthrosis. The data were analyzed using t test and Pearson's correlation. Level of statistical significance was set at 0.05. RESULTS: Statistically significant relationships were found between TMJ crepitation sound and 4 radiographic characteristics of DJD. DJD group demonstrated statistically significant higher CBCT bone change score (BCS) and age. In contrast, there was no significant difference of BCS between osteoarthrosis and osteoarthritis groups within the DJD group. CONCLUSIONS: Crepitation sounds and osseous changes in TMJ radiograph are confirmed to be important diagnostic criteria for TMJ DJD. However, degree of TMJ osseous changes does not correlate significantly with clinical pain symptom. CLINICAL RELEVANCE: For TMJ DJD diagnosis, dentists should consider both clinical examination for TMJ crepitation and radiographic assessment for TMJ bony changes.


Asunto(s)
Osteoartritis , Trastornos de la Articulación Temporomandibular , Tomografía Computarizada de Haz Cónico , Humanos , Cóndilo Mandibular , Articulación Temporomandibular , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/patología
6.
Dentomaxillofac Radiol ; 49(3): 20190272, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31670578

RESUMEN

OBJECTIVE: This study was conducted to assess the clinical usability of the zero-echo time (ZTE) technique of MRI for evaluating bone changes of the temporomandibular joint (TMJ) in comparison with CBCT. METHODS: Twenty patients with TMJ disorder who underwent both CBCT and MRI were randomly selected. CBCT images were obtained with an Alphard 3030 device (Asahi Roentgen Ind., Co. Ltd, Kyoto, Japan). MRIs were obtained using a 3.0 T scanner (Pioneer; GE Healthcare, Waukesha, WI, USA) and a 21-channel head coil. An isotropic three-dimensional proton-density-weighted ZTE sequence was acquired. Two radiologists evaluated 40 joints of 20 patients for the presence of the following osseous changes: flattening, erosion, osteophyte and sclerosis of the condyle; and flattening, erosion and sclerosis of the articular fossa. CBCT and ZTE-MRI assessments were performed at a 2-month interval. The prevalence-adjusted and bias-adjusted κ statistic was used to analyse interexaminer and intraexaminer agreement and the agreement between ZTE-MRI and CBCT. RESULTS: Intraexaminer and interexaminer agreement analyses of ZTE-MRI showed high reproducibility (κ>0.80), which was comparable to that of CBCT. Flattening, osteophyte and sclerosis of the condyle and all types of bone changes in the mandibular fossa showed nearly perfect agreement between CBCT and ZTE-MRI (κ = 0.80-0.90). Erosion of the condyle showed substantial agreement between both sets of images (κ = 0.65-0.70). CONCLUSIONS: It is suggested that ZTE-MRI provides clinically reliable images for bone assessment in TMJ disorder. MRI may become a beneficial diagnostic tool for patients with both TMJ disc and bone pathology, with advantages involving medical costs and radiation dose.


Asunto(s)
Tomografía Computarizada de Haz Cónico , Imagen por Resonancia Magnética , Trastornos de la Articulación Temporomandibular , Articulación Temporomandibular , Humanos , Japón , Cóndilo Mandibular/diagnóstico por imagen , Reproducibilidad de los Resultados , Articulación Temporomandibular/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen
7.
J Craniofac Surg ; 31(1): 222-225, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31633663

RESUMEN

INTRODUCTION: Mandibular distraction osteogenesis (MDO) is an effective treatment for severe micrognathia, as it helps to avoid tracheostomy but has some adverse effects on the temporomandibular joint (TMJ). TMJ ankylosis is a serious condition leading to feeding difficulties and growth impairment, and could result in worse consequences in cases with micrognathia who already have limited growth potential. Here, we aimed to report on cases with TMJ ankylosis-a rare but devastating complication of MDO. In total, we described 3 syndromic cases with TMJ ankylosis that developed after MDO and reviewed the associated literature. MATERIAL AND METHODS: We retrospectively enrolled 3 patients who presented with TMJ ankylosis following MDO at the Oral and Maxillofacial Surgery Department of the University Hospital of Lille, France. RESULTS: All 3 patients had craniofacial syndrome with micrognathia. MDO was performed at least twice in each case, and the 3 patients developed subsequent TMJ ankylosis. They all presented with TMJ ankylosis and micrognathia in our Department. DISCUSSION: MDO leads to a certain amount of stress on the TMJ, and in cases with congenital TMJ deformation, such stress could lead to TMJ ankylosis. To our knowledge, 12 cases of TMJ ankylosis after MDO have been described in studies involving 309 patients while it is not reported in other publications. They were all syndromic patients. Thus, TMJ health should be carefully monitored during and after MDO to avoid TMJ ankylosis, and alternative treatments such as costochondral grafts should be considered.


Asunto(s)
Anquilosis/cirugía , Mandíbula/cirugía , Trastornos de la Articulación Temporomandibular/cirugía , Anquilosis/diagnóstico por imagen , Niño , Preescolar , Femenino , Humanos , Masculino , Mandíbula/diagnóstico por imagen , Micrognatismo/diagnóstico por imagen , Micrognatismo/cirugía , Osteogénesis por Distracción , Estudios Retrospectivos , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Resultado del Tratamiento
8.
J Craniomaxillofac Surg ; 47(12): 1898-1902, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31690477

RESUMEN

Synovial chondromatosis (SC) of the temporomandibular joint is a pseudoneoplastic condition characterized by benign cartilaginous metaplasia of synovial tissue mesenchymal residues with intra-articular nodule formation. TMJ involvement is rare. Interposition of loose bodies in the articular space can generate pressure, leading to glenoid fossa erosion with intracranial extension. The aim of this study was to present six SC cases with intracranial extension treated using a surgical procedure. All the patients were treated with open surgery. The superior compartment of the TMJ was opened widely to carefully remove the metaplasic mass. Temporal synovectomy was then performed. Attention was paid to preserving the integrity of the articular disc. The exposed dura mater was also preserved. No material was used to reconstruct the gap in the glenoid fossa. A 1-year follow-up showed no swelling or pain. Patients demonstrated good recovery of mouth opening, with improvement over previous mouth limitations. Morphological studies, performed using MRI and CT, showed complete anatomical recovery of the TMJ and total bone reconstruction of the glenoid fossa. Simple removal of intra-articular nodules, with TMJ arthroplasty and articular disk preservation, represents an efficient treatment option for full anatomical and functional recovery in synovial chondromatosis of the temporomandibular joint with glenoid fossa erosion of less than 1 cm2.


Asunto(s)
Condromatosis Sinovial/cirugía , Fosa Craneal Media/patología , Trastornos de la Articulación Temporomandibular/cirugía , Articulación Temporomandibular/diagnóstico por imagen , Adulto , Condromatosis Sinovial/diagnóstico por imagen , Fosa Craneal Media/cirugía , Femenino , Cavidad Glenoidea , Humanos , Luxaciones Articulares , Cuerpos Libres Articulares , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Resultado del Tratamiento
9.
Am J Orthod Dentofacial Orthop ; 156(4): 531-544, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31582125

RESUMEN

Progressive condylar resorption, also known as idiopathic condylar resorption, is an uncommon, aggressive, degenerative disease of the temporomandibular joint (TMJ) seen mostly in adolescent girls and young women. This condition leads to loss of condylar bone mass, decrease of mandibular ramal height, steep mandibular and occlusal plane angles, and an anterior open bite. In 3 case reports, we review the pathogenesis of TMJ degenerative disease and the clinical management of TMJ arthrosis. We emphasize that TMJ arthritic disease should be discussed in dental circles as a pathologic entity in the same way that orthodontists discuss arthritic disease in orthopedic circles. Regarding the degenerative pathology of the TMJ, treatment goals include restored function and pain reduction. The treatment methods used to achieve these goals can range from noninvasive therapy to minimally invasive and invasive surgery. Most patients can be treated noninvasively, and the importance of disease prevention and conservative management in the overall treatment of TMJ disease must be acknowledged. The decision to manage TMJ osteoarthrosis surgically must be based on evaluation of the patient's response to noninvasive treatments, mandibular form and function, and effect of the condition on his or her quality of life.


Asunto(s)
Resorción Ósea/diagnóstico por imagen , Resorción Ósea/cirugía , Ortodoncia Correctiva/métodos , Procedimientos Quirúrgicos Ortognáticos/métodos , Osteoartritis/diagnóstico por imagen , Osteoartritis/cirugía , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/terapia , Adulto , Resorción Ósea/patología , Niño , Terapia Combinada , Progresión de la Enfermedad , Femenino , Humanos , Cóndilo Mandibular/patología , Cóndilo Mandibular/cirugía , Osteoartritis/patología , Calidad de Vida , Trastornos de la Articulación Temporomandibular/patología , Resultado del Tratamiento
10.
Am J Orthod Dentofacial Orthop ; 156(4): 555-565, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31582127

RESUMEN

A common dilemma when treating anterior open bite is understanding its etiology. Idiopathic condylar resorption (ICR) can cause open bite in affected individuals. Although it is prudent to not treat patients with ICR until active resorption has ceased, orthodontists may begin treating them because anterior open bite from ICR may not appear before or during their orthodontic treatment. This article reports a 12-year-old female who was diagnosed with ICR 10 months after completion of her orthodontic treatment for a Class II Division 1 malocclusion. When a young patient with a high mandibular angle and previous skeletal or dental Class II malocclusion returns with an open bite during the retention phase, the patient's condyles must be carefully examined to determine whether any temporomandibular joint disorder, such as ICR, is present. Currently, the controversy over the cause and the cure for ICR is continuing to challenge orthodontists in diagnoses and treatments. Orthodontists should closely monitor and offer informed treatment options to patients with risk factors for ICR or signs of its pathology that might develop at any stage of orthodontic treatment, including the retention period.


Asunto(s)
Resorción Ósea/complicaciones , Resorción Ósea/terapia , Maloclusión de Angle Clase II/terapia , Cóndilo Mandibular/patología , Enfermedades Mandibulares/patología , Enfermedades Mandibulares/terapia , Mordida Abierta/etiología , Mordida Abierta/terapia , Ortodoncia Correctiva/métodos , Trastornos de la Articulación Temporomandibular/terapia , Resorción Ósea/diagnóstico por imagen , Cefalometría , Niño , Terapia Combinada , Estética Dental , Femenino , Humanos , Maloclusión de Angle Clase II/diagnóstico por imagen , Enfermedades Mandibulares/diagnóstico por imagen , Mordida Abierta/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Resultado del Tratamiento
11.
J Radiol Case Rep ; 13(8): 31-39, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31558968

RESUMEN

Pigmented villonodular synovitis (PVNS) is a benign proliferative disorder of the synovium that usually involves joints, tendon sheaths, and bursae. It presents rarely, however, in the temporomandibular joints (TMJs). This paper reports a 59-year-old female patient with PVNS of the TMJ and its clinico-pathologic features are discussed. The patient was treated with surgery and postoperative radiotherapy (PORT). Follow-up was conducted, and there were no recurrences, metastases, skin changes or joint stiffness noted. The main treatment of PVNS is surgical resection. However, postoperative radiotherapy is important for local control of extensive tumors or positive margins. We conducted a literature review for postoperative radiotherapy case reports related to PVNS of the TMJ.


Asunto(s)
Sinovitis Pigmentada Vellonodular/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Femenino , Pérdida Auditiva/etiología , Humanos , Imagen por Resonancia Magnética , Persona de Mediana Edad , Radioterapia Ayuvante , Sinovitis Pigmentada Vellonodular/patología , Sinovitis Pigmentada Vellonodular/terapia , Trastornos de la Articulación Temporomandibular/patología , Trastornos de la Articulación Temporomandibular/terapia , Acúfeno/etiología
12.
J Craniofac Surg ; 30(7): 2236-2238, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31490445

RESUMEN

OBJECTIVES: Elongated styloid processes (ESP) may show clinical symptoms that are readily confused with symptoms associated with temporomandibular disorders (TMDs). The purpose of study was to compare the prevalance and characteristics of ESP in patients with TMD and asymptomatic individuals are examined by cone beam computed tomography. METHODS: Angulations and length of the styloid process (SP) were evaluated in CBCT images of 100 patients with TMD symptoms and 100 control patients, retrospectively. Differences between the patient and control groups were assessed by analysis independent sample t test. Pearson correlation test was used to evaluate between length and angulation of SP relationship. RESULTS: The mean length of SP in the TMD group was 38.19 ±â€Š8.6 mm for the right and 38.99 ±â€Š8.1 mm for the right side. The mean length of SP in the control group was 36.80 ±â€Š6.3 for the right side and 36.18 ±â€Š6.5 mm for the left side. The mean anterior angulation of the SP in the TMD group was 22.08 ±â€Š5.5 degree in the TMD group and 23.97 ±â€Š4.1 degree in the control group. The mean medial angulation of the SP in the TMD group was 30.57 ±â€Š4.9 degree and 29.89 ±â€Š4.4 degree in the control group. There was no significant difference in length and angle between the groups (P > 0.05). CONCLUSION: No correlation was found in terms of length and angulations of SP between TMD and control groups.


Asunto(s)
Tomografía Computarizada de Haz Cónico , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto Joven
13.
J Craniofac Surg ; 30(7): e597-e598, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31503121

RESUMEN

The calcification of the articular disc is an uncommon lesion, usually discovered in hips, elbows, and shoulders, but rarely in temporomandibular joints (TMJ). The TMJ disc calcification may be related to pain and limitation of the mandibular mobility, however, most of the patients were asymptomatic. A 61-year-old female was referred to our hospital after a maxillofacial fist injury, bilateral TMJ disc calcifications were found accidentally by radiological examination. Here the significance of image fusion of cone-beam computed tomography and magnetic resonance imaging (MRI) in the diagnosis of this lesion was emphasized.


Asunto(s)
Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Calcinosis , Tomografía Computarizada de Haz Cónico , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Persona de Mediana Edad , Rango del Movimiento Articular , Disco de la Articulación Temporomandibular/diagnóstico por imagen , Disco de la Articulación Temporomandibular/patología , Trastornos de la Articulación Temporomandibular/patología
14.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 54(8): 505-509, 2019 Aug 09.
Artículo en Chino | MEDLINE | ID: mdl-31378026

RESUMEN

Diagnosis and treatment of temporomandibular disorders (TMD) have been paid attention greatly by dentists in clinic. Imaging is the most important method for dentists to diagnose TMD correctly. Cone-beam CT (CBCT) and MRI have been demonstrated superiority and necessity that contribute to correctly diagnosis, early diagnosis and follow-up patients. However, there are several significant problems required for professional agreement: the procedures for CBCT and MRI examination need to be standardized; dentists have to be trained regularly for the knowledge of the imaging diagnosis of TMD; it should be emphasized that patient history and clinical examination are much more important for diagnosis, imaging is only a supplement and should not be over used.


Asunto(s)
Trastornos de la Articulación Temporomandibular , Tomografía Computarizada de Haz Cónico , Odontólogos , Diagnóstico Precoz , Humanos , Imagen por Resonancia Magnética , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen
15.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 54(8): 522-526, 2019 Aug 09.
Artículo en Chino | MEDLINE | ID: mdl-31378029

RESUMEN

Objective: To evaluate the mandibular condylar location and morphology in the temporomandibular joint disorders. Methods: One hundred thirty-seven TMD patients (age 37.5±16.1 years, male/female=39/98) were performed with MRI scan for temporomandibular joint (TMJ) from November, 2011 to April, 2019 in Department of Radiology,Hainan Hospital of General Hospital of Chinese PLA and General Hospital of Chinese PLA. The patients were classified into 3 groups according the disc displacement: disc without displacement (DWoD) (185 TMJ), disc displacement with reduction (DDWR) (17 TMJ) and disc displacement without reduction (DDWoR) (72 TMJ). The location (anterior position, central position and posterior position) and morphology (oval shape, flat shape and beaklike shape) of the condylar head were observed on the sagittal PDWI, and the long and short axes were measured on the axial T2WI. Another groups were classified into 3 subgroups according to the disc displacement of bilateral TMJ: bilateral normal disc location (biND) (74 cases), unilateral disc displacement (uniDD) (40 cases) and bilateral disc displacement (23 cases). The inter-condyle angle was measured on the axial T2WI. Results: There was no significant difference for the location of condylar head among DWoD, DDWR and DDwoR groups (χ(2)=7.435, P=0.115). The rate for flat condylar shape was significantly higher in DWoD group [83.9%(115/137)] than that in DDWoR group [50.7%(34/67)], and the rate for beaklike condylar shape was significantly lower in DWoD group [16.1%(22/137)] than that in DDWoR group [49.3%(33/67)] (χ(2)=23.521, P<0.001). The length of long axis presented significantly longer in DWoD group [(17.2±2.4) mm] than that in DDWR group [(15.4±2.0) mm] and that in DDWoR group [(14.7±2.7) mm] (P<0.05). The length of short axis presented significantly longer in DWoD group [(7.3±1.2) mm] than that in DDWR group [(6.5±1.3) mm] and that in DDWoR group [(6.1±1.4) mm] (P<0.05). The inter-condyle angle presented significantly larger in biND group (136°±13°) and uniDD group (132°±14°) than that inbiDD group (124°±17°) (P<0.05). Conclusions: The mandibular condylar morphology changes significantly presented in the patients with temporomandibular disc displacement for the temporomandibular disorders.


Asunto(s)
Luxaciones Articulares , Disco de la Articulación Temporomandibular , Trastornos de la Articulación Temporomandibular , Adulto , Femenino , Humanos , Luxaciones Articulares/diagnóstico por imagen , Imagen por Resonancia Magnética , Masculino , Cóndilo Mandibular , Persona de Mediana Edad , Articulación Temporomandibular , Disco de la Articulación Temporomandibular/diagnóstico por imagen , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Adulto Joven
16.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 54(8): 527-531, 2019 Aug 09.
Artículo en Chino | MEDLINE | ID: mdl-31378030

RESUMEN

Objective: To analyze the MRI characteristics and pathological features of the condylar cyst like lesions in temporomandibular joint (TMJ). Methods: The study was conducted retrospectively on TMJ images from 14 patients (2 males, 12 females, aged 10-71) who underwent MRI examinations, from January 2015 to December 2017 at Center for TMD and Orofacial Pain, Peking University School and Hospital of Stomatology including 2 patients with pathological results. The signals of the lesion, condylar bone and disc-condyle relationship were evaluated. Results: Cyst like lesions of 15 condyles from 14 patients were analyzed. All of the lesions showed hypersignal on T2WI (12/12), while most of them showed hypersignal on T1WI (8/11) and PDWI (11/12). Mostly the lesions were surrounded by hyposignal linear margin (12/15), with normal condylar bone signal (13/15). Disk displacement with reduction was discovered in 3 joints, while disk displacement without reduction was discovered in 8 joints and 4 joints had normal disk-condyle relationships. The pathological components of cyst like lesions included cartilage, loose connective tissue, hemorrhage and bone tissue. Conclusions: Differed from those of large joints like hips or knees, MRI characteristics of cyst like lesions of condyle in TMJ exhibited hypersignal imaging in both T1WI and T2WI, indicating that the components of cyst like lesions included granulation tissue, not fluid.


Asunto(s)
Quistes , Luxaciones Articulares , Trastornos de la Articulación Temporomandibular , Adolescente , Adulto , Anciano , Niño , Quistes/diagnóstico por imagen , Femenino , Humanos , Luxaciones Articulares/diagnóstico por imagen , Imagen por Resonancia Magnética , Masculino , Cóndilo Mandibular , Persona de Mediana Edad , Estudios Retrospectivos , Articulación Temporomandibular , Disco de la Articulación Temporomandibular , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Adulto Joven
17.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 54(8): 537-539, 2019 Aug 09.
Artículo en Chino | MEDLINE | ID: mdl-31378032

RESUMEN

This pilot study aimed to investigate the feasibility of trans-oral ultrasonography of the temporomandibular joint (TMJ) in oblique sagittal plane. Six volunteers who were receiving residency training at Hainan Hospital of General Hospital of Chinese PLA were recruited into this study, five of them had normal TMJ and one had anterior displaced disc all of which had been confirmed by MRI. A hockey-stick-shaped ultrasound probe was placed between the cheek and maxilla to push against the mucosa lateral to posterior maxillary tuberosity, and every volunteer underwent bilateral scans. The sonographic imaging were completed successfully on the six volunteers; the condyle, the superior and the inferior head of the lateral pterygoid muscle, the disc and the maxillary vein were clearly identified in all the twelve ultrasonographic scans. The feasibility of trans-oral ultrasonography of TMJ in oblique sagittal plane was confirmed.


Asunto(s)
Luxaciones Articulares , Trastornos de la Articulación Temporomandibular , Humanos , Luxaciones Articulares/diagnóstico por imagen , Imagen por Resonancia Magnética , Cóndilo Mandibular , Proyectos Piloto , Articulación Temporomandibular , Disco de la Articulación Temporomandibular , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Ultrasonografía
19.
Artículo en Inglés | MEDLINE | ID: mdl-31447325

RESUMEN

OBJECTIVE: The aim of this study was to correlate the morphometric measurements of the temporomandibular joint, including condylar size, joint space, and articular eminence size, with gender, disk position, and condylar position by using magnetic resonance imaging. STUDY DESIGN: Overall, 93 patients were evaluated (31.2% males and 68.8% females; age 18-81 years; mean age 41 years). Condylar size (D1), joint space (D2), and eminence size (D3) were measured. Correlations with gender, disk position, and condylar position were calculated. RESULTS: A statistically significant correlation was found between D2 and gender, with the joint space being significantly larger in the male group (P = .05). There were correlations between D2 and the position of the disk and the position of the condyle (P ≤ .05). CONCLUSIONS: The results indicate a correlation between male gender and larger joint space. In addition, we found that the joint space size influences the articular disk and condyle position, which can cause disk displacement.


Asunto(s)
Luxaciones Articulares , Cóndilo Mandibular , Trastornos de la Articulación Temporomandibular , Adulto , Algoritmos , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Cóndilo Mandibular/diagnóstico por imagen , Cóndilo Mandibular/patología , Factores de Riesgo , Factores Sexuales , Articulación Temporomandibular , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen
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