Browsing by Autor "Marisen Leo"

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    Biomateriales para la regeneración del reborde alveolar: revisión
    (2014) Marisen Leo; Sandra Parra; María Gregoria Vega de Peña; Mary Oballos; Leonardo Martínez
    We present a systematic review of the biomaterials used in the regeneration of the alveolar ridge at the loss of three-dimensional bone volume, in order to summarize the results obtained in the last fifteen years to inform the dental community effectiveness thereof. Scientific evidence indicates the effectiveness of hydroxyapatite, connective tissue, bone tissue, plasma rich in growth factors and chitosan in the regeneration of the alveolar ridge. Is demonstrated healing of soft tissue and bone regeneration progressive use of hydroxyapatite, is also highly compatible. With the use of connective tissue is recorded soft tissue augmentation in width and height, provided with a favorable color healing. Bone tissue has become the choice of filler material in reconstructive procedures maxillary alveolar atrophy to be a common component and accessible. The use of plasma rich in growth factors optimized maturation stimulates the soft tissues and bone formation, alveolar ridges equally treated with chitosan showed that it exerts an antimicrobial function, wound healing, analgesic. We recommend  further research and clinical studies that demonstrate the effectiveness of chitosan in humans.
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    Propiedades químicas y microbiológicas de membranas de quitosano/propóleo con utilidad para regeneración tisular en cavidad bucal
    (2021) Marisen Leo; Leonardo Martínez; Fernando Rincón; Reynaldo Luis Ortíz Ramos
    In the event of procedures involving tissue lesions in the oral cavity, inflammatory reactions will be generated; therefore, guided tissue regeneration and soft tissue expansion techniques have been incorporated to restore shape and function of the affected tissue. With this aim, in this work, chitosan and propolis membranes were prepared to analyze some of their chemical and microbiological properties, for their possible usefulness in the regeneration of soft tissues in the oral cavity. Study with a descriptive level and pre-experimental design was performed, with a sample of 9 fractions of 3 chitosan / propolis membranes. The pKa of the chitosan membranes was determined by potentiometric titration curves. Controlled release of propolis studies were carried out by means of spectrophotometric calibration curves, and finally a microbiological study of the microbial susceptibility from membranes front Pseudomona aeruginosa and Klebsiella pneumoniae was performed. Preparation of chitosan/propolis membranes was found to result from a simple, standard, reproducible and economically accessible process, making it a viable alternative in clinical practice, due to of mucoadhesive properties, controlled propolis release and antimicrobial effectiveness front to the studied strains.