Porcelain Veneers Flashcards
Name the two types of porcelain veneers
Slice and conventional prep
What are the indications for a slice prep (5)
Crowding, diastema, missing interdental papillae, interproximal restorations and movement of teeth
How many planes of preparation in a anterior veneer
3
What are the differences between conventional good enamel and poor enamel prep
Poor enamel : prep 0.5 depth chamfer 1mm down the palalatal
Good enamel: but joint sloping or 90 degrees
How do you assess good enamel for a veneer
- Bruxism
- Is the tooth in guidance
- Quality of labial enamel
- Whether ip Restorations
What is a Geller model
Stone die placed in a plastic model to ensure the emergence profile of veneers is correct . (Able to trim papillae )
What is tye axial inclination of a conventional veneer
10-15
What is the convergence angle of a porcelain veneer
20-30
What is the labial reduction for a empress crown
0.75-1mm
If a tooth has ip Restorations and is in guidance what type of veneer is required
Slice with Palatal prep
What is the the incisal edge reduction required for a porcelain veneer
2mm
What would be the preparation of a conventional veneer at the gingival margin of an upper central
0.3mm
What depth should a Palatal mini chamfer be
0.5mm
When creating a conventional veneer What depth should be achieved ip
Cut through ip approx 1mm in depth (nick the corners only not through the contact point )
When would you place a Palatal chamfer on a veneer
The tooth is in anterior guidance and has poor labial enamel
