Desenvolvimento de dispositivo de manufatura aditiva considerando parâmetros odontológicos

Abstract

Dentistry has been going through many technological changes since the last decade. One of them is the use of additive manufacturing, which has been adopted to create from prostheses to bruxism plates. For this reason, 3D printers are increasingly becoming an object of necessity in the dental field. However, the Brazilian market has not been meeting these demands, thus generating a dependence on imported products. The objective of this study is to develop the design and prototype of a 3D object production system, focusing on the demands of the dental area with costs compatible with what is already available to the sector. The methodological approach used in this project is the one proposed by G. Pahl et al., 2007 with respective adaptations. A survey was carried out with the dentists, the following aspects were identified: Considering the Brazilian market in the area, the answers showed that the main problems of the market in this field are: i/ the lack of support; ii/ quality of printers; iii/ availability of courses. From the information collected, it was chosen to address only the problem ii highlighted for the accomplishment of this work, since the other two were dependent on it. To this end, seven concepts were developed. Concept 3, with the highest potential, was identified through the use of a Relative Evaluation Matrix. With this, it is possible to identify the main commercial components and dimension of the specific elements, which allowed modeling the set in the Creo software. Subsequently, the acquisitions and manufacture of components were forwarded. The prototype was then assembled, which made it possible to carry out the functional and preliminary tests. Performance tests indicate that the prototype produces results as planned. Geometric testing of the machine cannot be carried out with the instruments necessary for it. It was estimated that with the use of commercial components, the device would have a maximum precision of 35 microns of fillet when using the motor in the XY plane and 10 microns for the motor spindle in the Z axis with an error of 1.2%. With this, it can be said that the goal was reached. Despite the work presenting several promising results, there was no study of whether the developed device could be produced at competitive prices nationally and whether the current theoretical specifications are compatible with practices.