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Braz. j. oral sci ; 21jan.-dez. 2022. ilus
Article in English | LILACS, BBO | ID: biblio-1354779


Aim: To describe cone-beam computed tomography (CBCT) features in patients with temporomandibular disorders (TMDs), in terms of degenerative changes, condylar excursions and positioning as well as their possible correlations with signs and symptoms. Methods: Clinical records of patients diagnosed with TMD who were seen between January 2018 and December 2019 were retrospectively evaluated. These patients were divided into the following groups based on the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD): arthralgia, myalgia, and arthralgia and myalgia groups. The CBCT examination findings of the patients were evaluated in relation to degenerative changes, estimates of condylar excursion, and condylar positioning. The likelihood ratio test was used to verify the possible differences among the three groups, whereas the chi-square test was used to verify the possible differences among the signs and symptoms for the tomographic findings (p ≤ 0.050). Results: In this study, 65 patients with TMD were included. These patients were predominantly female (84.6%) with a mean age of 40.6 years. Tomographic findings of flattening, hyperexcursion and posterior condylar positioning were frequent. A significant correlation was noted between osteophyte and lateral capsule pain (p = 0.027), erosion and posterior capsule pain (p = 0.026), and flattening, pseudocysts (p < 0.050) and condylar excursion (p < 0.001) with mouth opening. Conclusion: Few correlations were noted between degenerative changes and signs of joint pain as well as degenerative changes and condylar hypoexcursion with mouth opening. These correlations were likely associated with division by diagnosis, whereas condylar positioning did not correlate with signs and symptoms

Signs and Symptoms , Temporomandibular Joint Disorders , Cone-Beam Computed Tomography , Mandibular Condyle
Braz. j. oral sci ; 20: e211443, jan.-dez. 2021. ilus
Article in English | LILACS, BBO | ID: biblio-1253787


Aim: The mandible is regarded as a frequently fractured bone in patients who present with maxillofacial trauma accounting for almost 15.5% to 59% of all facial fractures. Managing condylar trauma has remained to be a point of contention amongst experts, regardless of the advances in surgical modalities and methodologies, and the treatment plan is often determined by the preference and the experience of the surgeon. There exist various approaches in the literature, each with its own specific benefits and drawbacks. With this study, we aimed to evaluate the prevalence of post-operative complications in patients who experienced ORIF by means of the retromandibular approach, by comparing the outcomes of one group having undergone transparotid surgery, with another that underwent retroparotid surgery. Methods: An experimental trial was undertaken. Convenience sampling was done from among the cases of condylar neck and base fracture visiting the department of OMFS, Dow University of Health Sciences from January 2017 to December 2019. An overall 26 patients were divided into 2 groups of 13 members each; one was managed using Open Reduction Internal Fixation (ORIF) by means of a retromandibular transparotid approach while the other group was treated with ORIF by means of a retromandibular retroparotid approach. A 6 month follow-up was done to assess range of active motion, occlusion, and complications such as deviation/deflection, neural injury, infections, sialocele, salivary fistulae and Frey's syndrome in both groups. Results: There was no statistically significant difference between the two groups in terms of inter-incisal opening, right and left lateral movements, or protrusion. One patient in the retroparotid group had deviation on mouth opening (7.69%), while one in the transparotid group reported with infection (7.69%), and 2 developed post operative seromas (15.38%). None had persisting facial nerve palsy at 6 months. Conclusion: We find no significant disparity between the 2 approaches at a follow-up of 6 months; therefore, the primary determining factor for selection of either technique is surgeon preference and appropriate case selection

Humans , Male , Female , Oral Surgical Procedures , Mandibular Condyle , Mandibular Fractures
Rev. Odontol. Araçatuba (Impr.) ; 42(3): 16-20, set.-dez. 2021. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1283908


As fraturas faciais em crianças são raras, já que os ossos faciais pediátricos têm maior elasticidade, menos pneumatização, tecido adiposo circundante mais espesso e mais estabilização da mandíbula e maxila pelos dentes não irrompidos. Em geral, lesões nos tecidos moles são mais comuns em crianças do que fraturas esqueléticas. Entre as fraturas faciais pediátricas, as fraturas da mandíbula são as mais comuns, sendo o côndilo a área mais acometida em pacientes pediátricos. O côndilo é considerado o principal centro de crescimento da mandíbula em crianças, assim é de suma importância a definição do tratamento adequado, pautado em diversos critérios de avaliação, com o intuito de erradicar possíveis complicações advindas da fratura condilar. Assim o objetivo deste estudo é relatar um caso de fratura de côndilo unilateral em uma criança, na qual realizou-se abordagem cirúrgica com fixação interna, afim de elucidar e discutir as possíveis condutas terapêuticas acerca de tratamentos a serem aplicados, visto que esses ainda são bastante controversos na literatura e os resultados das diversas condutas são os mais diversos, apresentando variados aspectos que interferem na evolução dos pacientes(AU)

Facial fractures in children are rare, since pediatric facial bones have greater elasticity, less pneumatization,thicker surrounding adipose tissue and more stabilization of the jaw and jaw by unerupted teeth.In general, soft tissue injuries are more common in children than skeletal fractures.Among pediatric facial fractures, mandible fractures are the most common, with condyl being the most affected area in pediatric patients.The condyl is considered the main center of mandible growth in children, so it is of Paramount importance to define the appropriate treatment, based on several evaluationcriteria, in order to eradicate possible complications resulting from the condilar fracture.Thus, the aim of this study is to report a case of unilateral condyl fracture in a child, in which a surgical approach with internal fixation was performedin order to elucidate and discuss the possible therapeutic approaches about treatments to be applied, since these are still quite controversial in the literature and the results of the various behaviors are the most diverse,presenting several aspects that interfere in the evolution of patients(AU)

Humans , Male , Child, Preschool , Jaw Fractures , Mandibular Condyle/surgery , Mandibular Condyle/injuries , Oral Surgical Procedures , Fractures, Bone , Facial Bones , Facial Injuries , Mandibular Condyle
Rev. Asoc. Odontol. Argent ; 109(3): 190-202, dic. 2021. ilus
Article in Spanish | LILACS | ID: biblio-1373406


Objetivo: Describir una serie de casos de fracturas de cóndilo mandibular resueltas por abordaje intraoral y asistencia video-endoscópica. Casos clínicos: Se presentan 3 casos de pacientes con fracturas de cóndilo mandibular unilateral. Dos casos presen- tan un segundo trazo de fractura parasinfisiaria asociada. El tratamiento realizado fue la reducción abierta y la fijación in- terna de todas las fracturas por abordaje oral. Se realizaron controles clínicos y tomográficos mediatos y a distancia (AU)

Aim: To present the experience with a series of cases re- solved by an intraoral approach and video-endoscopic assis- tance for the management of mandibular condyle fractures. Clinical cases: Three cases of patients with unilater- al mandibular condyle fractures are presented. Two of the cases presented a second line of associated parasymphyseal fracture. The treatment performed was open reduction and internal fixation of all fractures by oral approach. Mid-term and long-term clinical and tomographic follow-ups were per- formed, with favorable results (AU)

Humans , Male , Adult , Endoscopy/methods , Fracture Fixation, Internal , Mandibular Condyle/injuries , Mandibular Fractures/therapy , Argentina , Oral Surgical Procedures/methods , Dental Service, Hospital
Rev. ADM ; 78(5): 291-296, sept.-oct. 2021. ilus
Article in Spanish | LILACS | ID: biblio-1348330


La anquilosis de la articulación temporomandibular en niños continúa siendo una patología presente a pesar de los avances médicos y sociales. El tratamiento de esta patología en niños tiene como objetivos restablecer la apertura bucal y mejorar la estética facial cuando se presentan hipoplasias o micrognatias asociadas. El uso de materiales aloplásticos para el tratamiento de la anquilosis temporomandibular en niños es evitar la reanquilosis y disminuir riesgos, molestias y costos que ocasionan la toma y aplicación de injertos, siendo utilizados con buenos resultados en niños en otras especialidades como la Traumatología y Ortopedia. Estos procedimientos pueden llevarse a cabo de manera segura y predecible. En este artículo se reportan dos casos de anquilosis temporomandibular en niños, tratados con materiales aloplásticos, llevados a cabo en la Unidad Médica de Alta Especialidad No. 71 del Instituto Mexicano del Seguro Social, Torreón, Coahuila, México, con un seguimiento de 11 y 16 años de postoperatorio, demostrando que se trata de una buena opción de tratamiento sin presentar alteraciones al crecimiento y desarrollo de los pacientes (AU)

Temporomandibular ankilosis in children is pathology still present despite the medical and social advances. The treatment of this pathology in children aims to restore mouth opening and improve facial aesthetics when hypoplasia or micrognatia are present. The use of alloplastic materials to treat temporomandibular ankilosis in children is to prevent the re ankilosis and reduce discomfort, risks, and cost causing by the take and application of graft, alloplastic materials being used with good results in children in other specialties such as Traumatology and Orthopedics. These procedures can be made safely and predictably. This article describes two cases of temporomandibular ankilosis in children, treated with alloplastic materials, carried out in the Medical Unit of High Specialty, number 71, of the Mexican Institute Social Security, Torreon, Coahuila, Mexico, with follow up of cases 11 and 16 years of postoperative, prove that is a good option of treatment, without presenting any alterations in growth and development of patients (AU)

Humans , Male , Child , Biocompatible Materials , Temporomandibular Joint Disorders/therapy , Ankylosis/therapy , Maxillofacial Prosthesis , Titanium , Follow-Up Studies , Chromium Alloys , Genioplasty , Mandibular Condyle/injuries
Rev. cient. odontol ; 9(2): e060, abr.-jun. 2021. ilus, tab
Article in Spanish | LIPECS, LILACS, LIPECS | ID: biblio-1254599


Objetivo: Comparar el ángulo de la guía condílea sagital obtenida del registro radiográfico y clínico en pacientes dentados. Materiales y métodos: La muestra estuvo conformada por un grupo único de estudio de 32 pacientes, en el que se evaluó la radiografía lateral estricta y los registros posicionales: en relación céntrica, registro protrusivo a 5 mm en lateralidad derecha y registro protrusivo a 5 mm en lateralidad izquierda. Con el registro posicional del arco facial se articuló el modelo superior, con el registro posicional en relación céntrica se articuló el modelo inferior, con los registros laterales protrusivos de los lados derecho e izquierdo se obtuvo la medida del ángulo de la guía condílea sagital para la programación del articulador semiajustable. El plan estadístico en la presente investigación utilizó el programa SPSS versión 24, la normalidad fue evaluada usando el test de Shapiro-Wilk, también se realizaron las pruebas de T de Student y correlación de Pearson. Resultados: Se determinó estadísticamente que el género y la edad influyen en la medida del ángulo de la guía condílea sagital. El método radiográfico presentó un ángulo de guía condílea de 35,69 ±5,18 y con el método clínico fue 35,69 ± 5,16 (p > 0,05). La prueba de correlación de Pearson sí mostró una correlación importante entre ambos métodos r = 0,948, p < 0,001. Conclusiones: Existe alta correlación en las medidas obtenidas del ángulo de la guía condílea sagital con los registros radiográficos y clínicos; esta concordancia permitiría reemplazar un método por el otro. (AU)

Objective: To compare the angle of the sagittal condylar guidance obtained from the radiographic and clinical records of dentate patients. Materials and Methods: The sample consisted of 32 patients in whom strict lateral radiography and positional records were performed: in centric relation, protrusive recording 5 mm in right laterality and protrusive recording 5 mm in left laterality. With the positional registration of the facebow, the upper model was articulated, while the lower model was articulated with the positional registration in centric relation, and with the protrusive lateral registrations on the right and left side the condylar guidance was obtained for programming the semi-adjustable articulator. Statistics were performed with the SPSS program version 24 in Spanish. Normality was evaluated using the Shapiro-Wilk test, for data with normal distribution, and the Student's T test and Pearson's correlation were performed in descriptive statistics. Results: The statistical analyses showed that gender and age influence the angle measurement of the sagittal condylar guide. The radiographic method presented a condylar guide angle of 35.69 ± 5.18, being 35.69 ± 5.16 with the clinical method (p> 0.05). Pearson's correlation test showed an important correlation between the two methods (r = 0.948, p <0.001). Conclusions: There is a high correlation in the measurements obtained from the angle of the sagittal condylar guide and the radiographic and clinical records, indicating that both methods are effective. (AU)

Humans , Male , Female , Adult , Young Adult , Radiography, Panoramic , Cephalometry , Dental Occlusion , Mandibular Condyle , Epidemiology, Descriptive , Cross-Sectional Studies , Retrospective Studies , Observational Studies as Topic
Odontol. Clín.-Cient ; 20(3): 93-97, jul.-set. 2021. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1372544


Introdução: A articulação temporomandibular (ATM) é uma estrutura especializada e excepcional, relacionada com funções estomatognáticas e propensa à disfunções associadas ao sistema maxilo-mandibular. Dentre essas alterações, a luxação é uma entidade patológica importante. Possui patogênese multifatorial e pode se manifestar de modo recidivante. Diversos tratamentos são propostos, dentre eles, a criação de anteparos aloplásticos. Paciente do sexo feminino, 22 anos com história de luxação mandibular recidivante com sintomatologia congruente ao quadro. Realizou-se tratamento cirúrgico com instalação de miniplacas de titânio do sistema 2.0 mm em forma de duplo T com curvatura de aproximadamente 90°, na região de eminencia articular. Após 1 ano e 6 meses, a paciente segue assintomática, sem lesões nervosas e sem luxações. A luxação da ATM é um quadro clínico angustiante, sendo a segunda luxação mais frequente e incidente em mulheres. Caracteriza-se por: incapacidade de fechar a boca, depressão cutânea pré-auricular, ptialismo e musculatura mastigatória tensa. A paciente apresentava severas luxações recidivantes, juntamente com ansiedade e angústia social. A utilização de placas evitou a hiperexcussão e remissão do quadro. É um procedimento menos agressivo e reversível. A técnica utilizada demonstrou bom prognóstico e, dentre as opções cirúrgicas, é uma técnica mais conservadora... (AU)

Introduction: TMJ dislocation is a multifactorial joint pathology that occurs when the mandibular condyle exceeds the articular eminence and cannot return to its original anatomical position, making it impossible for the patient to close the mouth. A 22-year-old female patient complaining of succes sive episodes of mandibular dislocation, characterizing the condition of dislocation redicivant TMJ. Surgical treatment was performed with the installation of 2.0 mm double T-shaped titanium miniplates with approximately 90° curvature in the region of articular eminence. After 8 months, the patient has no complaints, no signs of facial nerve damage and no episodes of dislocation. TMJ dislocation is a socially and psychologically distressing clinical condition, being the second most frequent dislocation in the body and with higher incidence in female patients. Key features are inability to close the mouth, pre auricular cutaneous depression, excessive salivation, and tense and spasmodic masticatory muscles. In this case, the patient presented severe relapsing dislocations, along with anxiety and social anguish. The use of plates acts as a mechanical barrier for condylar movements, avoiding hyperexcussion, being a less aggressive and reversible procedure, having only the disadvantage of the possibility of plate frac ture. The technique used with the objective of limiting condyle movement, among the surgical options, is a more conservative technique... (AU)

Humans , Female , Adult , Temporomandibular Joint , Temporomandibular Joint Dysfunction Syndrome , Joint Dislocations , Joint Dislocations/complications , Mandibular Condyle , Masticatory Muscles
Article in Chinese | WPRIM | ID: wpr-878431


OBJECTIVES@#To investigate the differences in the temporomandibular joints (TMJs) between patients with anterior disc displacement with reduction (ADDwR) and asymptomatic subjects by using 3D morphometric measurements.@*METHODS@#A total of 15 patients with ADDwR and 10 asymptomatic subjects were enrolled. Then, 3D models of the maxilla and mandible were reconstructed using MIMICS 20.0. Nine morphologic parameters of TMJs on both sides were measured on the 3D solid model. The differences in the parameters were analyzed between the patients and the asymptomatic subjects and between the left and right sides of each group.@*RESULTS@#The horizontal and coronal condylar angles on the ipsilateral side of the patients were significantly greater than those of the asymptomatic subjects (@*CONCLUSIONS@#ADDwR will increase the condylar angles to be significantly greater than the normal level and decrease SRA and articular spaces to be significantly smaller than the normal level. The condyles will be displaced upward, closer to the fossa.

Humans , Joint Dislocations , Magnetic Resonance Imaging , Mandible , Mandibular Condyle , Maxilla , Temporomandibular Joint , Temporomandibular Joint Disorders , Tooth
Braz. oral res. (Online) ; 35: e27, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1153614


Abstract The aim of the present overview was to evaluate the outcomes of systematic reviews to determine the incidence of condylar resorption in patients submitted to orthognathic surgery and analyze whether the risk of developing this condition is related to a specific type of surgery. Searches were conducted in the PubMed/MEDLINE, Embase, and Cochrane electronic databases for systematic reviews with quantitative data on condylar resorption due to any type of orthognathic surgery for dentoskeletal deformities published up to May 25, 2019. The AMSTAR 2 and Glenny tools were applied for the quality appraisal. Five systematic reviews were included for analysis. Only one article was considered to have high quality. Among a total of 5128 patients, 12.32% developed condylar resorption. From those patients, 70.1% had double jaw surgery, 23.4% had mandibular surgery alone, and in 6.5% a Lefort I technique was used. Based on these findings, bimaxillary surgery could be considered a risk factor for condylar resorption. However, these results should be interpreted with caution, since other factors, such as pre-operative skeletal deformities, type of movement, and type of fixation, can contribute to the development of this condition. Further studies should consider reporting main cephalometric data, temporomandibular diagnosis, hormonal levels, and tomographic measures before and after the surgery at least every 6 months during the firsts two years to identify accurately risk factors for condylar resorption.

Humans , Bone Resorption/etiology , Bone Resorption/epidemiology , Orthognathic Surgical Procedures , Cephalometry , Incidence , Systematic Reviews as Topic , Mandibular Condyle/surgery
Int. j. morphol ; 38(6): 1707-1712, Dec. 2020. tab, graf
Article in English | LILACS | ID: biblio-1134502


SUMMARY: The study aims to evaluate the morphological variation of mandibular condyle This analysis was composed of 450 digital orthopantomograms taken for routine investigation to assess the morphology of 900 condylar heads. Condylar morphology was classified into four types (oval, bird beak, diamond and crooked finger). Most common occurring shape were evaluated, symmetry of condylar shape and most common combinations of the condylar shapes present in population were assessed. Out of 900 mandibular condyle, type 1(oval) of condyle was the most commonly appearing shape (56 %), followed by type 3 (diamond), type 2(bird beak) and finally type 4 (crooked finger). Symmetry was seen in 74.2 % of the total sample with the oval-oval was the most commonly occurring. Routine use of orthopantomography can assist dentist in assessment of condylar morphology alterations. Oval shape was the most common in all age groups in males and females. More studies on Iraqi population evaluating mandibular condyle are needed to provide standardized values for mandibular anatomical parts.

RESUMEN: El objetivo del presente estudio fue evaluar la variación morfológica del cóndilo mandibular. El análisis se realizó en 450 ortopantomogramas digitales en una investigación de rutina para evaluar la morfología de 900 cabezas condilares. La morfología condilar se clasificó en cuatro tipos (ovalada, pico de pájaro, diamante y dedo torcido). Se evaluó la forma más común de ocurrencia, la simetría de la forma condilar y las combinaciones más comunes en la población. De 900 cóndilos mandibulares, el tipo 1 (ovalado) de cóndilo apareció con mayor frecuencia (56 %), seguido del tipo 3 (diamante), el tipo 2 (pico de pájaro) y finalmente el tipo 4 (dedo torcido). Se observó simetría en el 74,2 % de la muestra total, siendo el óvalo-óvalo el que se presentó con mayor frecuencia. El uso rutinario de la ortopantomografía puede ayudar al dentista a evaluar las alteraciones de la morfología condilar. La forma ovalada fue la más común en todos los grupos etarios en hombres y mujeres. Se necesitan más estudios sobre la población iraquí que evalúen el cóndilo mandibular para proporcionar valores estandarizados para evaluar la anatomía mandibular.

Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Young Adult , Radiography, Panoramic/methods , Mandibular Condyle/diagnostic imaging , Temporomandibular Joint , Anatomic Variation , Iraq , Mandibular Condyle/anatomy & histology
Int. j. morphol ; 38(5): 1281-1287, oct. 2020. graf
Article in Spanish | LILACS | ID: biblio-1134437


RESUMEN: La Relación Céntrica (RC) es un concepto que busca definir la posición ideal del cóndilo de la mandíbula en la fosa mandibular, siendo esta posición muy discutida en la literatura y ha ido cambiado con los avances en conocimiento y tecnología. Tomándose en la actualidad en consideración elementos anatómicos esenciales que son utilizados como guía para el clínico. La importancia de poder reconocer esta posición radica en la correcta ejecución tanto de procedimientos diagnósticos como de tratamiento en diversas áreas de la odontología. Existen elementos anatómicos de la articulación temporomandibular (ATM) que nos ayudarían a comprender mejor el concepto de RC, entre estos destacan que la condensación ósea de las superficies articulares funcionales y su recubrimiento por fibrocartílago; la porción media del disco articular, desprovista de vasos y nervios; el techo de la fosa mandibular que puede llegar a ser extremadamente delgado por lo cual no se consideraría un área para soportar carga; la prolongación posterior del disco articular (DA) que es altamente vascularizada e inervada. El DA se encuentra íntimamente relacionado con estructuras como el ligamento temporomandibular o lateral y la cabeza superior del músculo pterigoideo lateral que permitirían junto a los elementos anteriormente mencionados el adecuado funcionamiento de la ATM. El correcto aprendizaje y utilización de estos conceptos contribuirá a lograr un mejor ejercicio del desarrollo profesional de estudiantes y profesionales del área de la odontología.

SUMMARY: The Central Relation (CR) is a concept that defines the ideal position of the mandibular condyle in the mandibular fossa. The position has been the subject of much discussion in the literature, noting changes as advancements in knowledge and technology are achieved. Thus, certain essential anatomical elements that are used as a guide for the clinician, are taken into account. The importance of being able to identify this position lies in the correct execution of both diagnostic and treatment procedures in various areas of dentistry. There are anatomical elements of the temporomandibular joint (TMJ) that improve understanding of the CR concept. These include: Bone condensation of the functional articular surfaces and their fibrocartilage coating; the middle portion of the joint disc, devoid of vessels and nerves. The roof of the mandibular fossa can become extremely thin, so it would not be considered an area to support load; the posterior prolongation of the articular disc (AD) Which is highly vascularized and innervated. The AD is also closely related to structures such as the temporomandibular or lateral ligament and the superior head of the lateral pterygoid muscle. Along with the previously described elements, this would allow proper functioning of the TMJ. The correct learning and use of these concepts contributes to a better exercise in the professional development of students and professionals in the area of dentistry.

Humans , Temporomandibular Joint/anatomy & histology , Mandibular Condyle/anatomy & histology , Temporomandibular Joint/physiology , Centric Relation , Mandibular Condyle/physiology
Rev. cir. traumatol. buco-maxilo-fac ; 20(3): 25-28, jul.-set. 2020. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1253233


Introdução: Os casos de assimetria facial são um desafio para tratamento no âmbito da cirurgia Bucomaxilofacial, devido a alteração craniofaciais nos três planos do espaço (Pitch,Yaw e Roll). Estes termos são utilizados para o planejamento da cirurgia ortognática e são essenciais para o planejamento virtual, A utilização da tecnologia neste sentido vem sendo cada vez mais empregada devido a sua previsibilidade de resultado tanto nos casos convencionais como nos mais desafiadores como os das assimetrias faciais. Este artigo visa relatar o planejamento virtual para a correção de um caso de assimetria através da cirurgia ortognática. Relato de caso: Paciente pediátrico leucoderma, do sexo masculino com 5 anos, possui limitação na abertura de boca, desvio da mandíbula para o lado direito com tempo de evolução de 5 meses. O procedimento consistiu na remoção da massa fibrótica através do acesso de Al Kayat. Após o procedimento cirúrgico o paciente foi submetido a uma série de sessões de fisioterapia agressiva. Considerações finais: A associação da remoção da massa fibrótica ou do bloco anquilótico e a fisioterapia intensa no pósoperatório propiciaram um resultado satisfatório, devolvendo a função mandibular do paciente... (AU)

Introduction: The temporomandibular ankylosis consists in mandibular movements limitation and is characterized as complete fusion of mandibular condyle to articular fossa or as a formation of a fibrotic mass in the region. Case Report: Pediatric male patient, white, 5 year-old, had a mouth opening limitation, mandibular deviation to the right side with 5 mouths of evolution. The procedure consisted in the removal of the fibrotic mass through the Al-Kayat approach. After the surgical procedure the patient was submitted to a series of aggressive physiotherapy sessions. Final considerations: The association of the removal of the fibrotic mass or the ankylotic bloc to intense physiotherapy in the post operatory provides a satisfactory result, restoring patient´s mandibular function... (AU)

Humans , Male , Child, Preschool , Temporomandibular Joint , Temporomandibular Joint Dysfunction Syndrome , Facial Asymmetry , Orthognathic Surgery , Ankylosis , Surgical Procedures, Operative , Mandibular Condyle , Mouth
Rev. cir. traumatol. buco-maxilo-fac ; 20(2): 25-29, abr.-jun. 2020. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1253480


Introdução:O tratamento da assimetria facial causada pela hiperplasia hemimandibularvemsendodebatidohádécadase, ainda assim,existem algumas controvérsias quanto aomelhor manejo dessacondição. Relato de caso:Revisão de literatura acerca das abordagens cirúrgicas descritas, e, apresentação de caso clínico de uma pacientecomassimetriafacial. Foram realizadas a cirurgiadepredictibil idadenoarticuladorsemi-ajustáveleprototipagem dos maxilares feita a partir de tomografia computadorizada. A paciente foi submetida a cirurgia ortognática com nivelamento da basilar mandibular e condilectomia no mesmo tempo cirúrgico. Considerações finais:Após acompanhamento por 48 meses, a paciente não apresenta recidiva e segue com a oclusão estável. Segue, também, sem dor nas articulações temporomandibulares. Dessaforma, foi alcançado um aspecto mais harmonioso da face, uma vez que a paciente se queixava de que a assimetria causava transtornos sociais a ela... (AU)

Introduction: The treatment of facial asymmetry caused by hemimandibular hyperplasia has been debated for decades and, even so, there are some controversies regarding the best management of this condition. Case report: Literature review about the surgical approaches described, and presentation of a clinical case of a patient with facial asymmetry. Predictability surgery was performed on the semi-adjustable articulator and prototyping of the jaws using computed tomography. The patient underwent orthognathic surgery with leveling of the mandibular basilar and condylectomy at the same surgical time. Final considerations: After 48 months of follow-up, the patient has no recurrence and continues with stable occlusion. There is also no pain in the temporomandibular joints. In this way, a more harmonious aspect of the face was achieved, since the patient complained that the asymmetry caused social disorders to her... (AU)

Humans , Female , Adult , Pain , Facial Asymmetry , Orthognathic Surgery , Hyperplasia , Jaw , Joints , Mandibular Condyle , Temporomandibular Joint , Tomography , Tomography, X-Ray Computed , Dental Articulators
Int. j. morphol ; 38(2): 458-460, abr. 2020.
Article in English | LILACS | ID: biblio-1056462


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.

Humans , Male , Female , Adult , Magnetic Resonance Imaging , Temporomandibular Joint Disorders/diagnostic imaging , Mandibular Condyle/diagnostic imaging , Temporomandibular Joint Disorders/pathology , Cross-Sectional Studies
Rev. cient. odontol ; 8(1): e006, ene.-abr. 2020. tab.
Article in Spanish | LIPECS, LILACS, LIPECS | ID: biblio-1095497


Introducción: Las alteraciones morfológicas de los cóndilos se determinan por la disminución de tejido óseo en el cóndilo mandibular, lo que cambia su forma y tamaño. Entre los signos más frecuentes encontramos el aplanamiento condilar, que se presenta entre los procesos dinámicos. Los cambios morfológicos más frecuentes son aplanamiento condilar, caracterizado por la pérdida de la convexidad del cóndilo articular. Radiográficamente, se presenta como una superficie convexa, la cortical ósea condilar es continua con ausencia de zonas radiopacas o radiolúcidas irregulares. Objetivos: Evaluar las características radiográficas de aplanamiento condilar de la articulación temporomandibular en pacientes dentados y no dentados mediante el uso de la radiografía panorámica. Métodos: Se evaluaron 520 radiografías panorámicas (260 de pacientes dentados y 260 no dentados), de pacientes de ambos sexos, entre 18 a 70 años, que fueron tomadas en el Centro de Radiología Digital Oral y Maxilofacial D3RX de Floridablanca (Colombia), entre enero de 2017 y diciembre de 2018, elegidos de forma aleatoria simple. La muestra fue definida mediante una base de datos de estudios científicos referenciados bibliográficamente, y mostró en este estudio una población evaluada con más alto promedio. Resultados: Los pacientes desdentados tienen mayor incidencia a presentar alguna alteración en la forma, el lado y el tipo de aplanamiento según la radiografía panorámica. Conclusiones: Los cambios morfológicos de los cóndilos observados en la radiografía panorámica según género mostró mayor prevalencia en mujeres que en hombres, mayor incidencia en cóndilos redondeados y afectación mayor en pacientes no dentados. Los resultados de este estudio muestran que, a pesar de que la radiografía panorámica no es considerada la mejor herramienta para determinar la presencia de cambios morfológicos leves a nivel de la mandíbula, puede ser utilizada por el odontólogo como la primera ayuda diagnóstica para obtener una visión general no solo de la articulación temporomandibular, sino de otras estructuras anatómicas y dentarias que deben ser estudiadas en trastornos de la articulación temporomandibular. (AU)

Introduction: Morphological alterations of the condyles are determined by a decrease of bone tissue in the mandibular condyle, changing its shape and size. One of the most frequent signs of these alterations involves condylar flattening that occurs among dynamic processes and is characterized by a loss of convexity of the articular condyle. Radiographically this is observed as a convex surface, the condylar bone cortex is continuous and there is an absence of irregular radiopaque or radiolucent areas. Objectives: To evaluate the radiographic characteristics of condylar flattening of the temporomandibular joint in dentate and non-dentate patients using panoramic radiography. Methods: We evaluated panoramic radiographs obtained at the D3RX Oral and Maxillofacial Digital Radiology Center in Floridablanca-Colombia from January 2017 to December 2018. Patients were randomly selected according to fulfillment of the following inclusion criteria:availability of panoramic radiographs showing the entire condylar structure of male and female patients aged 18 to 70 years attending from January 2017 to December 2018. This number of radiographs was defined according to a database. We evaluated the presence of flattening, the shape and the affected side and sex. The Chi-square test was applied. P <0.005. Results: A total of 520 panoramic radiographs were obtained; 260 from dentate patients and 260 from non-dentate patients. Patient characteristics show that edentulous patients had a higher incidence of alterations in the shape, side and type of flattening in the panoramic radiographs. Edentulous patients have a higher incidence of presenting some alteration in their shape, side and flattened condyles observed in panoramic radiographs in 51.2% versus 35.1% of dentate patients (P <0.001). Conclusions: The morphological changes of the condyles observed in panoramic radiographs were more prevalent in women than men, with a higher incidence in rounded condyles and greater involvement in edentulous patients. The results of this study show that although panoramic radiography is not considered the best tool to determine the presence of slight morphological changes at the level of the jaw, it can be used as the first diagnostic aid to obtain an overview of not only the temporomandibular joint but also other anatomical and dental structures that should be studied in disorders of the temporomandibular joint. (AU)

Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Temporomandibular Joint , Radiography, Panoramic , Mandibular Condyle
Int. j. odontostomatol. (Print) ; 14(1): 81-88, mar. 2020. tab, graf
Article in English | LILACS | ID: biblio-1056505


ABSTRACT: Aging is a dynamic process that includes various alterations in the oral cavity, with tooth loss being the most frequent. Rehabilitative treatment may include removable or fixed prostheses and implants. The aim of this study was to describe the geometric (trajectory, ranges, areas) and kinematic (speed) characteristics of the mandibular and masticatory movements threedimensionally in participants with dental prostheses. A sample of 10 participants with removable prosthetic rehabilitation was divided into three groups (complete, atypical and overdenture) the characteristics of mandibular movements bordering and chewing with 3D Electromagnetic Articulography were measured. The Posselt polygonin was obtained, the frontal and sagittal plans, its areas, trajectories and ranges are analyzed. The masticatory movements were analyzed in the area of each cycle, the frequency, the speed and the reason between the masticatory cycle and the bordering movements, no significant differences between the groups. Subjects with dental prostheses, regardless of the type, they showed low of motion (border and functional) compared to dentate subjects with no functional alterations whose values have been reported in the literature. The subjects with overdenture have values closer to what is described for young dentate subjects.

RESUMEN: El envejecimiento es un proceso dinámico que incluye varias alteraciones en la cavidad oral, siendo la pérdida de dientes la más frecuente. El tratamiento de rehabilitación puede incluir prótesis fijas o removibles y/o implantes. El objetivo de este estudio fue describir las características geométricas (trayectoria, rangos, áreas) y cinemáticas (velocidad) de los movimientos mandibulares y masticatorios en participantes con prótesis dentales realizando un análisis en tres dimensiones. Se consideró una muestra de 10 participantes con rehabilitación protésica y se dividió en tres grupos (prótesis total, atípica e implantosoportada), se midieron las características de los movimientos mandibulares bordeantes y masticatorios con articulografía electromagnética 3D. Se obtuvo el polígono Posselt en los planos frontal y sagital, se analizaron sus áreas, trayectorias y rangos. Se analizaron los movimientos masticatorios en cuanto al área de cada ciclo, la frecuencia, la velocidad y la razón entre el área el ciclo masticatorio y los movimientos bordeantes, sin diferencias significativas entre los grupos. Los sujetos con prótesis dentales, independientemente del tipo, mostraron disminución de movimiento (bordeante y funcional) en comparación con los sujetos dentados sin alteraciones funcionales cuyos valores se han informado en la literatura. Los sujetos con prótesis implantosoportada tienen valores más cercanos a lo que se describe para sujetos jóvenes dentados.

Humans , Middle Aged , Aged , Temporomandibular Joint Disorders , Imaging, Three-Dimensional/methods , Denture, Partial, Fixed , Denture, Partial, Removable , Mandible , Temporomandibular Joint , Biomechanical Phenomena , Chile , Data Interpretation, Statistical , Computer-Aided Design , Printing, Three-Dimensional , Mandibular Condyle , Mastication , Movement
Dental press j. orthod. (Impr.) ; 25(2): 61-68, Mar.-Apr. 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1133653


ABSTRACT Introduction: Facial asymmetry associated with unilateral condylar hyperplasia (UCH) is a complicated clinical condition. Objective: The objective of this study was to describe morphological characteristics of the mandible and the temporomandibular joint in patients with facial asymmetry, using computed tomography and 3D reconstruction. Methods: A retrospective observational study was performed with patients displaying facial asymmetry evaluated by single photon emission computed tomography (SPECT)/CT analysis, for suspected UCH, between 2015 and 2018. The following variables were compared between the affected side (producing the asymmetry) and the contralateral side (side to where the jaw is deflected): condylar length, condylar medial and lateral pole length, mandibular ramus length, intra-articular spaces, articular eminence height and position of the posterior wall of the glenoid fossa. Results: Forty-three patients (21 women, mean age: 20.7 ± 7.25 years) with facial asymmetry were included, 19 patients presented right side deviation and 24 patients had left side deviation. Condylar length, lateral pole length, the sum of maximum values and articular eminence height were greater in the affected side (p< 0.05). A positive correlation was found between the position of the posterior wall of the glenoid fossa and the articular eminence height in the affected side (r = 0.442). Conclusions: In patients with suspected UCH, evaluated through CT, craniofacial measurements showed significantly larger condylar length and the condylar sum of maximum values in the affected side. A positive correlation was found between the increased dimensions of the articular eminence and the more posterior position of the glenoid fossa in the affected side.

RESUMO Introdução: A assimetria facial associada à hiperplasia condilar unilateral (HCU) é uma condição clínica complexa. Objetivo: O objetivo desse estudo foi descrever as características morfológicas da mandíbula e da articulação temporomandibular de pacientes com assimetria facial, usando tomografia computadorizada e reconstruções tridimensionais. Métodos: Esse estudo observacional retrospectivo foi realizado em pacientes com assimetria facial e suspeita de HCU, avaliados por meio da análise de tomografia computadorizada de emissão de fóton único (SPECT)/TC, entre os anos de 2015 e 2018. As seguintes variáveis foram comparadas entre o lado afetado (responsável pela assimetria) e o lado contralateral (lado para onde a arcada estava desviada): comprimento condilar, comprimento dos polos medial e lateral do côndilo, comprimento do ramo mandibular, espaços intra-articulares, altura da eminência articular e posição da parede posterior da fossa glenoide. Resultados: A amostra constituiu-se de 43 pacientes (21 mulheres, idade média: 20,7 ? 7,25 anos) com assimetria facial, da qual 19 pacientes apresentavam desvio do lado direito e 24, do lado esquerdo. O comprimento condilar, o comprimento do polo lateral, a soma dos valores máximos e a altura da eminência articular foram maiores no lado afetado (p< 0,05). Foi encontrada uma correlação positiva entre a posição da parede posterior da fossa glenoide e a altura da eminência articular no lado afetado (r = 0,442). Conclusão: Em pacientes com suspeita de HCU, avaliados por meio de TC, as medidas craniofaciais mostraram um comprimento condilar e a soma dos valores condilares máximos significativamente maiores no lado afetado. Foi encontrada uma correlação positiva entre as dimensões aumentadas da eminência articular e a posição mais posterior da fossa glenoide no lado afetado.

Humans , Female , Adolescent , Adult , Young Adult , Mandible , Mandibular Condyle , Tomography, X-Ray Computed , Retrospective Studies , Facial Asymmetry , Hyperplasia
J. oral res. (Impresa) ; 9(1): 14-20, feb. 28, 2020. tab, ilus
Article in English | LILACS | ID: biblio-1151408


To evaluate the anterior-posterior (A-P)/medial-lateral (M-L) dimension, and morphology of the mandibular condyle in patients aged 18 to 65 years with Class I skeletal pattern on Cone Beam CT scans. Materials and Methods: Seventy one scans were evaluated using RealScan 2.0 software. The dimension was determined by points A (most anterior in the sagittal plane), P (most posterior in the sagittal plane), M (most interior in the coronal plane), L (most exterior in the coronal plane). The morphology of the condyle was evaluated in two coronal and sagittal planes, being classified as: round, flat, convex or mixed. The size of the condyle was analyzed by descriptive statistics and the morphology by frequency distribution. For the bivariate analysis, the Student's t-test was applied. Results: Measurements were obtained for the A-P diameter of the right condyle (RC) (8.72mm ± 1.25mm) and the left condylar (LC) (8.50mm ± 1.50mm), the M-L diameter of the RC (19.24mm ± 2.03mm) and the LC (18.97mm ± 1.87mm). There were significant differences in the male M-L dimension of the LC compared to the female (p=0.002). The most prevalent morphology of RC (35.21) and IQ (23.94) in the coronal plane was round. Conclusion: The A-P dimension of the right and left condyle is similar in both genders; however, there are differences in the M-L dimension of the left male condyle. The most prevalent morphology of the right and left condyle was round in the sagittal plane with the exception of the coronal plane.

Evaluar la dimensión antero- posterior (A-P)/medio-lateral (M­L), y la morfología del cóndilo mandibular en pacientes de 18 a 65 años con patrón esquelético Clase I en tomografías computarizadas Cone Beam. Material y Métodos: 71 tomografías fueron evaluadas mediante el software RealScan 2.0. La dimensión fue determinada por los puntos A (más anterior en el plano sagital), P (más posterior en el plano sagital), M (más interno en el plano coronal), L (más externo en plano coronal). Se evaluó la morfología del cóndilo en dos planos coronal y sagital, clasificándose en: redonda, aplanada, convexa y mixta. La dimensión del cóndilo fue analizada por estadística descriptiva y la morfología mediante distribución de frecuencias. Para el análisis bivariado, se aplicó la prueba de t de Student. Resultado: Se obtuvieron las medidas del diámetro A-P del cóndilo derecho (CD) (8,72mm ± 1,25mm) y el izquierdo (CI) (8,50mm ± 1,50mm), el diámetro M-L del CD (19,24mm ± 2,03mm) y el CI (18,97mm ± 1,87mm). Hubo diferencias significativas en la dimensión M-L del CI del sexo masculino en comparación al femenino (p=0.002). La morfología más prevalente del CD (35,21) y CI (23,94) en plano coronal fue de tipo redonda. Conclusión: La dimensión A-P del cóndilo derecho e izquierdo es similar en ambos sexos; sin embargo, existen diferencias en la dimensión M-L del cóndilo izquierdo del sexo masculino. La morfología del cóndilo derecho e izquierdo más prevalente fue la redonda en plano sagital a excepción del plano coronal.

Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Young Adult , Temporomandibular Joint/pathology , Mandibular Condyle/anatomy & histology , Epidemiology, Descriptive , Prevalence , Cone-Beam Computed Tomography , Mandibular Condyle/diagnostic imaging
Article in Chinese | WPRIM | ID: wpr-781354


Treating dentofacial deformities secondary to condylar resorption is a remarkable clinical challenge. Combined orthodontic treatment and orthognathic surgery is currently the main treatment scheme and is often integrated with temporomandibular joint surgery or conservative treatment according to the severity of condylar resorption. This paper discussed the etiology, clinical features, imaging features, treatment options, and prophylaxis of condylar resorption.

Bone Resorption , Dentofacial Deformities , Humans , Mandibular Condyle , Orthognathic Surgery , Orthognathic Surgical Procedures , Temporomandibular Joint
Article in Chinese | WPRIM | ID: wpr-781350


OBJECTIVE@#Mandibular condyle injury usually results in malocclusion and disharmony of facial growth in growing children. This study aimed to evaluate the long-term effects of autogenous coronoid grafts on the facial growth of children with unilateral temporomandibular joint (TMJ) ankylosis who underwent mandibular condyle reconstruction.@*METHODS@#Ten growing patients with unilateral bony TMJ ankylosis admitted in West China Hospital of Stomatology, Sichuan University between January 1st, 2008 and December 31st, 2016 were followed up and evaluated. These patients include three males and seven females with ages ranging from 5 years to 12 years at the time of surgery. Each patient underwent gap arthroplasty, condyle reconstruction with ipsilateral coronoid, and interposition of the pedicled temporalis fascial flap in a single operation. The postoperative follow-up ranged from 3 years to 8 years with an average of 4.9 years. Postoperative panoramic radiographs determined the growth of the mandibular height and length on the affected side and compared it with those of the healthy side.@*RESULTS@#All patients recovered uneventfully after surgery. At the end of follow-up period, the maximal mouth opening ranged from 32 mm to 41 mm with an average of 35.6 mm. Mandibular height and length continued to grow after the successful treatment of ankylosis using autogenous coronoid grafts for condyle reconstruction. However, growth deficit still existed. The final ramus height and mandibular length of the affected side at the end of follow-up increased by 25.3% (P<0.05) and 26.1% (P<0.05), respectively, compared with the initial values measured immediately after surgery. Growth rates of ramus height and mandibular length of the affected side were 47.1% and 27.2% lower (P<0.05) than those of the healthy side, respectively.@*CONCLUSIONS@#Mandibular height and length continued to grow after the successful treatment of ankylosis by using autogenous coronoid grafts for condyle reconstruction. However, growth deficit still existed. The growth rate of the affected mandible was reduced compared with that of the undisturbed side even after treatment of ankylosis.

Ankylosis , Bone Transplantation , Child , Child, Preschool , China , Female , Humans , Male , Mandibular Condyle , Temporomandibular Joint , Temporomandibular Joint Disorders