Optical Properties Flashcards
1
Q
Give reason/ why any restoration on dental should has proper finishing and polishing? 🦷
A
To be smooth ➡️ specular reflection🦄➡️ eppears shiny as the sound tooth ✨️
2
Q
Give reason/ refractive index of a restoration should equal that of the tooth?
A
To avoid the appearance of line of demarcation.⚡️⭐️
⭐️
3
Q
Give reason/ why should there be slight missmatch between refraction index of the filling and the matrix?🦷
A
Perfect matching = transparent 👓
Full miss matching = opaque 🕶
and we want it to be translucent.
4
Q
Metamerism/define.
A
Change of color matching of 2 objects under different light sources.🦵🏾🦵🏽🦵🏼
