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Master's Dissertation
DOI
https://doi.org/10.11606/D.82.2010.tde-02092010-104316
Document
Author
Full name
Christiano Pavan Mateus
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2010
Supervisor
Committee
Chierice, Gilberto Orivaldo (President)
Claro Neto, Salvador
Gaspar, Ana Maria Minarelli
Title in Portuguese
Avaliação do composto ósseo de Ricinus granulado e hidroxiapatita sintética na osteointegração em coelhos: estudo histológico
Keywords in Portuguese
Composto de Ricinus granulado
Hidroxiapatita sintética
Histologia
implante
Osteointegração
Abstract in Portuguese
Com o crescimento empenho da medicina humana e veterinária na busca de biomateriais osteointegráveis, o estudo histológico se faz presente na interpretação e apresentação por resultados histomorfológicos das interações dos materiais implantados com o tecido ósseo, possibilitando o conhecimento da velocidade de neoformação óssea. A proposta deste trabalho foi avaliar por estudo histológico a bioatividade do composto ósseo de Ricinus granulado e hidroxiapatita sintética, implantados no osso ilíaco de coelhos, possibilitando uma melhor compreensão das interações das interfaces osso/implante, frente aos resultados histomorfológicos, sendo interpretados e apresentados por análise descritiva qualitativa. Foram selecionados 30 coelhos, fêmeas, Oryctolagus cuniculus, grupo geneticamente modificado - Botucatu, idade adulta de 90 dias, peso entre 2,55 e 3,1 Kg divididos em 3 grupos de 10 animais (G1, G2 e G3) sendo que o tempo de pós-operatório foi de G1 com 45 dias, G2 com 70 dias e G3 com 120 dias. Cada animal recebeu 3 defeitos ósseos no osso ilíaco, sendo que dois foram preenchidos pelos biomateriais: hidroxiapatita sintética e composto ósseo de Ricinus granulado e o terceiro para controle. Após a eutanásia, o osso ilíaco foi removido, identificado e submetido ao procedimento histológico. Concluiu-se através da avaliação histológica a crescente modificação da estrutura inicial para a deposição de nova formação óssea, sobressaindo células gigantes de corpo estranho (em alguns casos), fibroblastos e abundante presença de tecido conjuntivo sem diferenciação óssea. E os materiais foram considerados como biocompatíveis e biologicamente ativos.
Title in English
Evaluation of the compound of granulated Ricinus and synthetic hydroxyapatite on the osseointegration in rabbits: histological study
Keywords in English
Compound of granulated Ricinus
Histology
Implant
Osseointegration
Synthetic hydroxyapatite
Abstract in English
With the growing commitment of human and veterinary medicine in the search for biomaterials osseointegration, the histological study is present in the interpretation and presentation of results of histomorphologic interactions of materials implanted with bone tissue, providing a speed of bone formation. The proposal was evaluated by histological study the bioactivity of the compound of granulated Ricinus and synthetic hydroxyapatite implanted in rabbit iliac bone, allowing a better understanding of the interactions of bone-implant interface, as compared with histopathologic results, and interpreted and presented by qualitative descriptive analysis. We used 30 female rabbits, Oryctolagus cuniculus, group - Botucatu, adulthood in 90 days, weighing between 2.55 and 3.1 kilograms divided into 3 groups of 10 animals (G1, G2 and G3) and that the length after surgery was 45 days with G1, G2 in 70 days and G3 with 120 days. Each animal received 3 bone defects in the pelvic bone, two of which were completed by biomaterials: synthetic hydroxyapatite and compound of granulated Ricinus and the third for control. After euthanasia, the iliac bone was removed, identified and subjected to histological procedures. It was concluded by the increasing histological modification of the initial structure for the deposition of new bone formation, towering giant cells of foreign body (in some cases), fibroblasts and abundant presence of connective tissue without bone differentiation. And the materials were considered as biocompatible and biologically active.
 
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Publishing Date
2010-09-03
 
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