Class IV restorations Flashcards
What is hue?
the colour
what is chroma?
saturation of the colour
What is value?
degree of light or dark
What increases with the patients age: hue, chroma, value?
chroma - saturation of the colour
What classic shade guide is used? (composite)
vitapan
How are the vitapan shades broken down?
A, B, C… (HUE)
1, 2, 3… (chroma)
What things should you do to take a shade?
- ask patient to remove lipstick
- place a light blue or grey bib over the patients clothes
- select shade at start of appointment
- remove staining on adjacent tooth
- get good light - daylight
- place shade guide at arms length from your eyes
- place guide along natural dentition
only look for a few seconds to avoid fatigue
- use correct guide for material
- check with nurse
What happens to the colour of teeth as they dry?
bright and more opaque
What aspect of colour do you select first?
the hue
Do you want a buccal or straight angle on the buccal cavosurface angle?
bevelled
What can improve the aesthetics of the crown?
anterior layering technique
What tape can you use to protect the adjacent tooth
PTFT tape
What colour burs are rough and smooth?
What happens if you don’t have much to work with? what do you use?
diagnostic wax up
What is a diagnostic wax up?
lab made tooth
