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Abstract(s)
Este trabalho tem como objetivo avaliar o efeito da temperatura no osso devido ao aque-cimento provocado pelo processo de furação. Foram realizadas visitas a duas clínicas para acompanhamento da técnica de implantologia dentária e foram recolhidas imagens ter-mográficas para a leitura da temperatura gerada na broca após o processo de furação. Na colocação de implantes dentários por exemplo, as variáveis que interferem no processo de furação do osso são: a velocidade, o material, o diâmetro, o comprimento e a geometria da ponta da broca. Com este trabalho pretende-se verificar, experimental e numerica-mente, as variáveis que interferem no aquecimento da estrutura óssea. Para isso, são uti-lizados materiais compósitos com características similares ao osso cortical e trabecular, com diferentes densidades. A metodologia apresentada revela-se útil e diferenciadora de outros trabalhos, pois são utilizados materiais com características similares aos materiais in vivo. Os métodos experimentais utilizados em laboratório são baseados nas técnicas de termografia e termopares durante a furação dos diferentes materiais. Paralelamente, são utilizados modelos teóricos numéricos, com o recurso à técnica de elementos finitos, para a discussão de resultados.
Após a elaboração do presente trabalho conclui-se que a temperatura na broca aumenta consoante a densidade e a estrutura do material, isto é, se o material for mais denso a temperatura na broca é mais elevada comparativamente ao material menos denso. Se o material possuir cavidades na sua estrutura, a temperatura na broca não é tão elevada como no material compacto. Verificou-se que a temperatura na broca é superior à tempe-ratura no osso.
This work aims to evaluate the effect of temperature on the bone due to heating caused by the drilling process. Some visits were carried out two clinics for dental implantology technique monitoring, and thermographic images were collected for reading the temper-ature generated in the drill after the drilling process. In the placement of dental implants for example, variables that interfere in the process of drilling of the bone are: the speed, the material, the diameter, length and geometry of the drill bit. With this work we intend to verify, experimental and numerically, the variables that intervene in the heating of the bone structure. For this purpose, composite materials are used with similar characteristics to the trabecular and cortical bone with different densities. The presented methodology proves to be useful and distinguishing from other works, since they are used materials with similar characteristics to the materials in vivo. The experimental methods used in the laboratory are based on thermography and thermocouples during drilling of different ma-terials. At the same time, are used numerical and theoretical models, with the use of finite element technique, for the discussion of results. After the working up of this project concluded that the temperature in the drill increases depending on the density and the material structure, i.e., if the material is denser the tem-perature in the bit is higher when compared to the less dense material. If the material has cavities in its structure, the temperature on the drill is not so high as in compact material. It was found that the temperature of the drill is higher than the temperature in the bone.
This work aims to evaluate the effect of temperature on the bone due to heating caused by the drilling process. Some visits were carried out two clinics for dental implantology technique monitoring, and thermographic images were collected for reading the temper-ature generated in the drill after the drilling process. In the placement of dental implants for example, variables that interfere in the process of drilling of the bone are: the speed, the material, the diameter, length and geometry of the drill bit. With this work we intend to verify, experimental and numerically, the variables that intervene in the heating of the bone structure. For this purpose, composite materials are used with similar characteristics to the trabecular and cortical bone with different densities. The presented methodology proves to be useful and distinguishing from other works, since they are used materials with similar characteristics to the materials in vivo. The experimental methods used in the laboratory are based on thermography and thermocouples during drilling of different ma-terials. At the same time, are used numerical and theoretical models, with the use of finite element technique, for the discussion of results. After the working up of this project concluded that the temperature in the drill increases depending on the density and the material structure, i.e., if the material is denser the tem-perature in the bit is higher when compared to the less dense material. If the material has cavities in its structure, the temperature on the drill is not so high as in compact material. It was found that the temperature of the drill is higher than the temperature in the bone.
Description
Keywords
Implantologia Necrose Termografia Termopares Elementos finitos