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1.
Rev. Fac. Odontol. Univ. Antioq ; 27(2): 442-454, Jan.-July 2016. graf
Article in English | LILACS | ID: biblio-957223

ABSTRACT

ABSTRACT Condylar hyperplasia is a disorder characterized by excessive and progressive growth affecting the condyle, neck, body, and mandibular ramus. Under this condition, mandibular growth occurs in all three planes of space, but more predominantly in one of them. Its etiology is controversial in its own. Some of its suggested causes include: trauma, hypervascularity, infections, and hereditary/intrauterine factors. Treatment protocols are varied, but one of the best treatment choices is high condylectomy. Following is the case of a 16-year-old female patient with this anomaly. The physical exam showed free facial asymmetry with mandibular deviation. Treatment consisted of TMJ surgery and high condylectomy plus a second orthodontic stage. The clinical outcomes at two-year follow-up suggest that a second intervention won′t be necessary. Patient was very satisfied with the results.


RESUMEN La hiperplasia condilar es una alteración caracterizada por crecimiento excesivo y progresivo, que afecta el cóndilo, el cuello, el cuerpo y la rama mandibular. Bajo esta condición, el crecimiento mandibular ocurre en los tres planos del espacio, pero con predominio por alguno de ellos. La etiología de la misma es motivo de controversia. Se sugieren como sus causas: traumatismos, hipervascularidad, infecciones y factores hereditarios e intrauterinos. Los protocolos de tratamiento son variados, pero una de las mejores opciones de tratamiento es la condilectomía alta. Se presenta el caso de una paciente de género femenino de 16 años de edad, portadora de esta anomalía. Al examen físico, se observa una franca asimetría facial con desviación mandibular. El tratamiento consistió en una cirugía de articulación temporomandibular con condilectomía alta y luego una segunda etapa ortodóntica. Los resultados clínicos a dos años de seguimiento sugieren que no será necesario hacer una segunda intervención. La paciente mostró alto grado de satisfacción con los resultados obtenidos.


Subject(s)
Hyperplasia , Bone and Bones , Facial Asymmetry
2.
Rev. AMRIGS ; 59(1): 39-54, jan.-mar. 2015. ilus, tab
Article in Portuguese | LILACS | ID: biblio-846802

ABSTRACT

Os autores apresentam uma revisão sobre reconstrução mandibular com retalho livre de fíbula, acrescida à experiência de centros de referência em reconstrução oncológica e craniofacial. A fíbula apresenta vários aspectos positivos para ser empregada como opção de reconstrução mandibular. O seu pedículo vascular, de anatomia relativamente constante, possui dois sistemas de vascularização (periosteal e endosteal), permite moldagem e montagem versáteis, pode ser acompanhada de ilha de pele para reconstrução tanto intra como extraoral, suporta implantes osteointegrados para a reconstrução da arcada dentária e tem morbidade relativamente baixa na área doadora. O retalho livre de fíbula continua sendo o padrão-ouro para a reconstrução de grandes perdas mandibulares (AU)


The authors present a review of mandibular reconstruction with free fibula flap, as well as the experience of reference centers in oncological and craniofacial reconstruction. The fibula has numerous positive aspects to be used as a mandibular reconstruction option. Its vascular pedicle, with a relatively constant anatomy, has two vascularization systems (periosteal and endosteal), allows versatile molding and assembly, can be accompanied by skin island for both intra and extraoral reconstruction, supports osseointegrated implants for reconstruction of the dental arch, and has fairly low morbidity at the donor site. The free fibula flap remains the gold standard for the reconstruction of large mandibular losses (AU)


Subject(s)
Humans , Surgical Flaps , Fibula/transplantation , Mandible/surgery , Bone Transplantation , Plastic Surgery Procedures/methods
3.
Rev. Soc. Odontol. La Plata ; 24(49): 27-32, nov.2014. ilus
Article in Spanish | LILACS | ID: lil-758508

ABSTRACT

El carcinoma epidermoide, es una neoplasia maligna de mayor incidencia de la cavidad bucal que representa el 55 por ciento de todos los tumores de esta región. El 68-72 por ciento de estos pacientes presenta etapas locorregionales avanzadas en el momento del diagnóstico. El objetivo de este trabajo es el de presentar un caso de un carcinoma epidermoide semidiferenciado de piso de boca y reborde residual mandibular anterior, tratado con submandibulectomía segmentaria y reconstrucción con osteosíntesis rígida...


Subject(s)
Humans , Male , Middle Aged , Carcinoma, Squamous Cell/surgery , Carcinoma, Squamous Cell/diagnosis , Carcinoma, Squamous Cell/pathology , Mouth Floor/pathology , Age and Sex Distribution , Carcinoma, Squamous Cell/classification , Carcinoma, Squamous Cell/rehabilitation , Internal Fixators , Mandible/surgery , Plastic Surgery Procedures/methods
4.
CES odontol ; 21(1): 39-43, ene. 2008. ilus
Article in Spanish | LILACS | ID: lil-562341

ABSTRACT

Son activados principalmente por el operador diariamente; teniendo como ventaja estos últimos la ausencia de cicatrices cutáneas permanentes. El objetivo principal de este estudio fue diseñar y fabricar un prototipo de distractor curvo de sínfisis, intraoral para reconstrucción mandibular. Materiales y Métodos: Se realizaron pruebas técnicas: modelo elementos finitos del distractor y cuerpo mandibular, generando una malla formada por 80.000 elementos con restricciones en el condilo mandibular, dos tornillos a cada lado de la placa y cuatro a cada lado del distractor en todos los grados de libertad; se aplicaron fuerzas de 248N a la zona. Finalmente, se realizó la prueba de instalación en cadáver para verificar la técnica quirúrgica y su ergonomía. Resultados: Se observó una distribución uniforme de esfuerzos para todo el sistema mandíbula- distractor, garantizando su resistencia y estabilidad estructural. Conclusiones: El dispositivo es resistente a las fuerzas de masticación, es de facial instalación y activación; permite la reconstrucción de segmentos curvos de amplia longitud.


Introduction and Objective: Currently, there are extra-and intra devices, which are mainly triggered by the operator daily, taking advantage as the latter no permanent scars skin. The main objective of this study was to design and manufacture a prototype of intraoral curve symphyseal distractor for mandibular reconstruction. Materials and Methods: The following technical tests were carried out: finite element model of the distractor and mandibular body creating a net of 80,000 elements with restrictions in the mandibular condyle, two screws on each side of the plate and four on each side of the distractor in every degree of freedom. 248N forces were applied to the zone. Finally, the installation test on a cadaver was done in order to verify the surgical technique and its ergonomy. Results: A uniform distribution of strains was observed for all the mandibular-distractor system, guarantying its resistance and structural stability. Conclusions: The device is resistant to masticatory forces; it is easy to install and to activate and allows the reconstruction of wide range curved segments.


Subject(s)
Bone Malalignment , Oral Surgical Procedures , Mandible
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