What are the properties of dental materials?
Requisite physical properties include low thermal conductivity and expansion, resistance to different categories of forces and wear such as attrition and abrasion, and resistance to chemical erosion. There must also be good bonding strength to the tooth.
How do you test biocompatibility?
Implant studies are often the most direct evaluation of device biocompatibility. The test material is placed in direct contact with living tissue. After an appropriate period, the implant site is recovered and examined microscopically for tissue reaction.
Why is biocompatibility testing important?
In a regulatory sense, biocompatibility is testing to determine potential toxicity resulting from contact with a material or medical device. Biocompatibility is important because systemic toxicity impairs an entire biological system such as the nervous or immune system.
What do you think is the importance of knowing the properties of dental materials?
If you know exactly which material has greater compressive strength and which is more likely to fracture under normal physiological masticatory forces, you can choose the material which has superior physical properties for restoration. This decreases the rates of failure of treatment.
When do you need biocompatibility testing?
Do you need to do biocompatibility testing? The short answer is that biocompatibility testing is almost always required for medical devices that have contact with human tissue. The ISO Materials Biocompatibility Matrix can help you to determine if your device needs testing.
What does biocompatibility testing mean?
Biocompatibility is, by definition, a measurement of how compatible a device or material is with a biological system. The purpose of performing biocompatibility testing is to determine the fitness of a device for human use, and to see whether use of the device can have any potentially harmful physiological effects.