Thermal properties Flashcards
1
Q
Thermal conductivity
A
Rate of flow of heat per unit temperature gradient
2
Q
Fluctuations of temp in oral cavity
A
Ingestion of hot/cold food
Exothermic nature of dentl materials
Light activated material
Light source used to activate setting produces heat
3
Q
Materials used to restore teeth
A
Similar degree of insulation
Small temperature rise
4
Q
Coefficient of thermal expansion
A
Fractional increase in length of a body for each degree centigrade increase in temperature
When a material has a higher value of contraction than a tooth substance, small gap between tooth and material will develop.
Fluid contains bacterial will penetrate
