Projects for odontological implants associated with hydroxiapatite and titanium particle coated surfaces

• Grant number: 00/07592-0
• Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE
• Start date: April 01, 2001
• End date: March 31, 2002
• Field of knowledge: Biological Sciences - Morphology - Anatomy
• Principal Investigator: Marcelo Yoshimoto
• Grantee: Marcelo Yoshimoto
• Company: Brastec Indústria de Peças para Equipamentos Médicos Ltda
• City: Limeira

Abstract

The present proposal intends to use exclusively bio-active materials or materials which promote a better interaction with bone tissue such as, for example, hydroxiapatite and titanium in particles, to be sprayed over the surface of implanted dentures, creating a greater surface contact, without the presence of contaminating residues. Titanium alloys have demonstrated high bio compatibility with bone tissue. Nevertheless part of the dental implants available on the market show themselves to be compounds containing the metal vanadium (toxic and eliminated in the urine). However, vanadium could be substituted by other metallic compounds such as niobium (nontoxic metal and found in abundance in the Brazilian territory). This alloy could give vastly superior results compared to commercially pure alloy, and is already in use in England. An increase in the contact surface between the implants and the bone tissue is also desirable. This increase can be created by means of the spraying of the surface with bio-inert, bio-tolerant, and even bio-active materials. The most commonly used material at the moment for surface spraying are particles of aluminum oxide, which belong to the bio-inert group of materials which can, partially contaminate the surface of the implants. Many implants present a format which is incompatible with that of the dental element lost, and this can lead to surface tensions which diminish or impede a perfect bone regeneration. (AU)