Browsing by Author "Vargas Díaz, Alex Patricio"
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- ItemCaracterización de programas de formación de especialistas en cirugía maxilofacial en Estados Unidos, Canadá y Chile(2020) Ramírez Skinner, Hernán; Vargas Díaz, Alex Patricio; Goñi Espíldora, Ignacio; Rosa Valencia, A.
- ItemCirugía reconstructiva de la articulación temporomandibular(2013) Ramírez Skinner, Hernán; Goñi Espíldora, Ignacio; Contreras, Rodrigo; Zúñiga R., Sergio; Vargas Díaz, Alex Patricio; Vásquez B., Mauricio; Reinoso D. Carmen; Schulz R., Rolando; Hormazábal N., Fernando; Goñi Espíldora, Ignacio
- ItemDesmoplastic Fibroma of the Mandible in a Pediatric Patient : A Case Report of Resection and Reconstruction With A Six-Year Follow-Up(2017) Ramírez Skinner, Hernán; Vargas Díaz, Alex Patricio; Solar González, Antonieta Alejandra; Foncea, C.; Astorga, P.
- ItemEpithelial tumors of salivary glands. Review of 286 pathology reports(2018) Campolo González, Andrés; Ramírez Skinner, Hernán; Vargas Díaz, Alex Patricio; León Ramírez, Augusto; Goñi Espíldora, Ignacio; Solar Gonzalez, Antonieta Alejandra
- ItemHiperplasia de cóndilo mandibular: Reporte de doce casos(2015) Pulgar B, D.; Goñi Espíldora, Ignacio; Reinoso D, C.; Schulz R, R.; Hormazábal N, Fernando.; Vargas Díaz, Alex Patricio; Ramírez S, H.Introducción: La hiperplasia condilar (HC) se define como un crecimiento patológico no neoplásico que afecta tanto al tamaño como a la morfología del cóndilo mandibular. Objetivo: Evaluar la eficacia y riesgos del tratamiento quirúrgico de la HC. Material y método: Estudio descriptivo, serie de casos. Se incluyó a todos los pacientes con diagnóstico de HC tratados en el Hospital Clínico de la Pontificia Universidad Católica de Chile entre enero de 2010 y febrero de 2014. Resultados: Doce pacientes fueron operados en nuestra institución por HC. El promedio de edad fue 19,3 ± 3,4 años. La forma de presentación más frecuente fue presencia de asimetría facial. Todos los pacientes fueron estudiados con SPECT que evidenció diferencia de captación mayor a 50% ± 3,1% entre ambos cóndilos. Todos los pacientes fueron tratados con condilectomía mandibular alta del lado afectado y en 3 casos, se realizó además cirugía ortognática en el mismo tiempo para corrección de maloclusión dental. La mediana de seguimiento fue de meses 16 (5 a 54 meses). En todos los pacientes se evidenció una mejora en la oclusión dental y simetría facial, con desaparición de la disfunción articular previa. Conclusiones: La HC es una entidad de poca frecuencia. La cirugía es eficaz y segura para el tratamiento de la HC.
- ItemManejo del trauma maxilofacial en la atención de urgencia por no especialistas(2017) Campolo, Andrés; Mix Vidal, Allan George; Foncea, Camila; Ramírez Skinner, Hernán; Vargas Díaz, Alex Patricio; Goñi Espíldora, Ignacio
- ItemEl papiro de Edwin Smith y su trascendencia médica y odontológica(2012) Vargas Díaz, Alex Patricio; López Campillay, Marcelo Alejandro; Lillo, Claudio; Vargas, María Josefina
- ItemRepair of Inferior Alveolar Nerve in Orthognathic Surgery Simulator (RIANOS): A Novel, Open-Source, Combined 3D Printed, and Ex-Vivo Chicken Sciatic Nerve Training Model(2024) Navia, Alfonso; Tapia Coron, Sebastián Andrés; Rojas Sepulveda, Maria Fernanda; Rojas, Francisco; Vargas Díaz, Alex Patricio; Guerra, Claudio; Cuadra, Alvaro; Searle Ferrari, Susana Valeria; Ramírez, Hernán; Teuber Lobos, Cristián AndrésObjective: Accidental transection of the inferior alveolar nerve (IAN) during bilateral sagittal split osteotomies (BSSO) has a reported incidence of up to 7%, determining important sensory disturbances in patients. Proper repair demands the need of microsurgical anastomosis skills. No previous training models have been described to simulate this. Therefore, we present a validated simulation model for intraoral repair of transected IAN.Methods: A CT scan of an orthognathic surgery patient was modified and a 3D model of a mandible with BSSO was printed. Chicken thigh anatomy was reviewed, and 2.5 mm sciatic nerves were dissected and mounted in the model. In order to simulate intraoral work depth, it was put inside a dental phantom or medical glove box. The model was tested by a group of experts (n = 12), simulating a transected IAN repair inside the mouth with both loupes and a double visor surgical training microscope. A survey was conducted to assess Face and Content validity.Results: The model was named RIANOS after Repair of Inferior Alveolar Nerve in Orthognathic Surgery Simulator. The printing cost of each model was approximately US$3 and the design file is open-source and available for download. All experts “Strongly Agreed” that the model was useful for training inferior alveolar nerve microsurgical repair and would consider implementing it with their residents.Conclusions: We developed a low cost, reproducible, open-source simulator for IAN injury repair training during BSSO. Face and Content validity was achieved through evaluation by a group of experts.
- ItemSensitivity analysis of geometric errors in additive manufacturing medical models(2015) Pinto, José Miguel; Arrieta, Cristóbal; Andía Kohnenkampf, Marcelo Edgardo; Uribe Arancibia, Sergio A.; Ramos Grez, Jorge; Vargas Díaz, Alex Patricio; Irarrázaval Mena, Pablo; Tejos Núñez, Cristián Andrés
- ItemSíndrome de Lesch-Nyhan y automutilación oral. Reporte de un caso(2018) Campolo González, Andrés; Vargas Díaz, Alex Patricio; Fontboté Riesco, Daniel Alejandro; Hernández, Marta
- ItemSistema para obtener geometría y resistencia similares a huesos (Chile, concesión n° 53338)Ramos Grez, Jorge; Vargas Díaz, Alex Patricio; Bórquez Hodgson, Benjamín; Valenzuela Ramírez, Luis
- ItemSpontaneous remission of eosinophilic granuloma of the maxilla after incisional biopsy: a case report(2016) Vargas Díaz, Alex Patricio; Ramírez Skinner, Hernán; Ramírez, Pablo.; Foncea, Camila.; Venegas, Bernardo.; Astorga, Paula.Abstract Background Langerhans cell histiocytosis (LCH), previously known as Histiocytosis X, is an infrequent disease that congregates a wide spectrum of clinical presentations with variable systemic involvement. Unification of these diseases under only one category is based on the almost identical histopathologic features of the lesions, but the etiology and proper approach for each presentation remains controversial. The localized alternative of Langerhans cell histiocytosis (LLCH), known as Eosinophilic Granuloma (EG) of bone, is the predominant clinical presentation of LCH. The maxilla is involved in 1 % of the head and neck region cases, representing an uncommon condition in this area. Case Presentation In this clinical case report, it is described a case of a 16-year-old male patient with an asymptomatic osteolytic lesion at first upper left molar apical level, a finding detected on control radiographic images was reported as “Monostotic Eosinophilic granuloma of the maxillary bone”, which was later confirmed through an incisional biopsy. A surgical excision was initially planned, but finally it was not performed due to a spontaneous healing of the lesion after the incisional biopsy. Conclusions The presented case supports a conservative approach in the management of solitary EG of maxillary and mandibular bone lesions and even supports an expectant attitude in the course of treatment given the possibility of a spontaneous regression after the biopsy, especially in small lesions.Abstract Background Langerhans cell histiocytosis (LCH), previously known as Histiocytosis X, is an infrequent disease that congregates a wide spectrum of clinical presentations with variable systemic involvement. Unification of these diseases under only one category is based on the almost identical histopathologic features of the lesions, but the etiology and proper approach for each presentation remains controversial. The localized alternative of Langerhans cell histiocytosis (LLCH), known as Eosinophilic Granuloma (EG) of bone, is the predominant clinical presentation of LCH. The maxilla is involved in 1 % of the head and neck region cases, representing an uncommon condition in this area. Case Presentation In this clinical case report, it is described a case of a 16-year-old male patient with an asymptomatic osteolytic lesion at first upper left molar apical level, a finding detected on control radiographic images was reported as “Monostotic Eosinophilic granuloma of the maxillary bone”, which was later confirmed through an incisional biopsy. A surgical excision was initially planned, but finally it was not performed due to a spontaneous healing of the lesion after the incisional biopsy. Conclusions The presented case supports a conservative approach in the management of solitary EG of maxillary and mandibular bone lesions and even supports an expectant attitude in the course of treatment given the possibility of a spontaneous regression after the biopsy, especially in small lesions.Abstract Background Langerhans cell histiocytosis (LCH), previously known as Histiocytosis X, is an infrequent disease that congregates a wide spectrum of clinical presentations with variable systemic involvement. Unification of these diseases under only one category is based on the almost identical histopathologic features of the lesions, but the etiology and proper approach for each presentation remains controversial. The localized alternative of Langerhans cell histiocytosis (LLCH), known as Eosinophilic Granuloma (EG) of bone, is the predominant clinical presentation of LCH. The maxilla is involved in 1 % of the head and neck region cases, representing an uncommon condition in this area. Case Presentation In this clinical case report, it is described a case of a 16-year-old male patient with an asymptomatic osteolytic lesion at first upper left molar apical level, a finding detected on control radiographic images was reported as “Monostotic Eosinophilic granuloma of the maxillary bone”, which was later confirmed through an incisional biopsy. A surgical excision was initially planned, but finally it was not performed due to a spontaneous healing of the lesion after the incisional biopsy. Conclusions The presented case supports a conservative approach in the management of solitary EG of maxillary and mandibular bone lesions and even supports an expectant attitude in the course of treatment given the possibility of a spontaneous regression after the biopsy, especially in small lesions.Abstract Background Langerhans cell histiocytosis (LCH), previously known as Histiocytosis X, is an infrequent disease that congregates a wide spectrum of clinical presentations with variable systemic involvement. Unification of these diseases under only one category is based on the almost identical histopathologic features of the lesions, but the etiology and proper approach for each presentation remains controversial. The localized alternative of Langerhans cell histiocytosis (LLCH), known as Eosinophilic Granuloma (EG) of bone, is the predominant clinical presentation of LCH. The maxilla is involved in 1 % of the head and neck region cases, representing an uncommon condition in this area. Case Presentation In this clinical case report, it is described a case of a 16-year-old male patient with an asymptomatic osteolytic lesion at first upper left molar apical level, a finding detected on control radiographic images was reported as “Monostotic Eosinophilic granuloma of the maxillary bone”, which was later confirmed through an incisional biopsy. A surgical excision was initially planned, but finally it was not performed due to a spontaneous healing of the lesion after the incisional biopsy. Conclusions The presented case supports a conservative approach in the management of solitary EG of maxillary and mandibular bone lesions and even supports an expectant attitude in the course of treatment given the possibility of a spontaneous regression after the biopsy, especially in small lesions.