Finishing and Delivery Flashcards
What are the aims of the delivery visit?
Patient leaves the surgery with a denture that:
1. Is a good and accurate fit
2. Is comfortable
3. They are able to insert and remove
4. They know how to clean
Why are casts often broken when they arrive?
technicians may have to break cast to get process denture out
What should you check before the patient arrives?
- Check it is the correct patient’s lab work
- Check there is no damage to the
framework following acrylic processing - Check the acrylic for porosity or plaster inclusions
- Look for areas of undercut or where it may rub – don’t adjust yet
- Check the fitting surface for rough edges or acrylic nodules and remove (use a glove or gauze swab)
- Check for acrylic flash at junction with CoCr
- Place in Perform to disinfect
What should you do when the patient arrives?
˗ Let them know what you are going to be doing
˗ Explain that the dentures may need adjusted to get them to fit and this is normal
˗ Look in the mouth with the old dentures in place, with no dentures and look at occlusion
Why should you not force the denture in?
Undercuts- what goes in does not always come out!
Check for large soft tissue undercuts before inserting – tissue blanching / pain (you have already looked at the denture)
What may fix the denture if it is not going in?
adjusting the fitting surface with a straight handpiece and acrylic bur
Once the denture is fully seated, what should you check?
- Check adaptation of major connector
To soft tissues
To the teeth - Check fit of
Rests (were rest seats prepared?)
Clasps
Flanges - Check the frenal attachment
- Check the extensions or for rubbing
- Check the occlusion
- Check the appearance
How should the frnal attachment be?
Thin but deep “V” shaped area of relief for labial frenum
Check when in situ that frenum has room to move
Make space by adjusting with handpiece
If patient reports pain but you cannot identify the location, what tool can be used?
pressure indicating paste
PIP
How should you use PIP?
- Dry the denture
- Put some PiP where the patient feels it is rubbing or where you want to check
- Carefully insert the denture – don’t wipe the paste off
- In areas of excess pressure- there will be bare spots
- Relieve these areas
- Rub of old Pip and repeat
Where does retention of the dentures come from?
- Soft tissue undercuts
- Adhesion (saliva and palate)
- Path of insertion vs path of displacement
- Clasps
- Correct denture extension into sulci
How can you adjust clasps?
If the clasp tip is not sitting on the surface of the tooth
Adams pliers may be used to adjust the clasps
Do not adjust at the clasp tip
You must make very careful and small movements until the clasp is fully activated – wrought vs cast clasps
How should you check the occlusion?
Use thin articulating paper between the teeth to identify:
Premature contacts Deflective contacts
Small occlusal problem Vs Large occlusal problem
Small occlusal problem
- chairside selective grinding
Large occlusal problem
- Wax wafer
- Remount and adjust in the lab
What should you check in the appearance?
- Centre line
- Shade
- Incisal plane
- Blending with natural teeth
