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Manufacture of rectangular dental thread

Grant number: 03/13312-9
Support type:Research Grants - Innovative Research in Small Business - PIPE
Duration: January 01, 2005 - September 30, 2007
Field of knowledge:Health Sciences - Dentistry
Principal Investigator:André Itman Filho
Grantee:André Itman Filho
Company:Tecnident Equipamentos Ortodônticos Ltda (Tecnident)
City: São Carlos


The study of the mechanical forces in the permanent deformations and in the breaking of dental thread generated an industry which uses high technology for the manufacture of components used in esthetic restoration. The choice of the appropriate thread is important at every stage of dental treatment. In the case of rectangular threads, used at the conclusion of work, the product is imported from a few suppliers. To avoid technological dependency and to cater for the needs of dentists it will be necessary to develop equipment capable of producing the rectangular threads in the dimensions suitable for the treatments. This project was prepared with the objective of developing a prototype-mill with adjustable cylinders. To establish the working parameters of the equipment, different stainless austenitic steel wires of the 300 series will be milled for rectangular transversal section. The microstructures and the final mechanical properties of the products will be evaluated after processing. In this stage, the control of procedures and the production of threads which conform to the normal specifications will be important. Based on these results, a new project will be proposed with the objective of building an industrial mill for the production of threads on a commercial scale. (AU)