RESUMEN

In craniofacial surgery, alloplastic materials are used for correcting bony defects. Porous polymethylmethacrylate (PMMA) is a biocompatible and nondegradable bone cement. Porous PMMA is formed by the classic bone cement formulation of methylmethacrylate liquid and PMMA powder in which an aqueous biodegradable carboxymethylcellulose gel is dispersed to create pores in the cement when cured. Pores give bone the opportunity to grow in, resulting in a better fixation of the prostheses. We evaluated the long-term results (n = 14), up to 20 years, of augmentations and defect fillings in the craniofacial area, with special interest in possible side effects and bone ingrowth. The evaluation consisted of a questionnaire, a physical examination, and a computed tomography (CT) scan. There were no side effects that could be ascribed to the porous PMMA. Twelve CT scans showed bone ingrowth into the prostheses, proving the validity behind the concept of porous PMMA.

Asunto(s)

Materiales Biocompatibles/química , Sustitutos de Huesos/química , Huesos Faciales/cirugía , Polimetil Metacrilato/química , Cráneo/cirugía , Materiales Biocompatibles/efectos adversos , Cementos para Huesos/química , Sustitutos de Huesos/efectos adversos , Carboximetilcelulosa de Sodio/química , Huesos Faciales/fisiopatología , Estudios de Seguimiento , Geles , Humanos , Hipersensibilidad/etiología , Necrosis , Satisfacción del Paciente , Examen Físico , Polimetil Metacrilato/efectos adversos , Porosidad , Infecciones Relacionadas con Prótesis/microbiología , Reproducibilidad de los Resultados , Estudios Retrospectivos , Cráneo/fisiopatología , Infecciones Estafilocócicas , Propiedades de Superficie , Encuestas y Cuestionarios , Tomografía Computarizada por Rayos X , Cicatrización de Heridas/fisiología