Complete dentures Flashcards
What material is used to pour casts of primary impression?
Plaster
What material is used to make special trays?
Light cure material acrylic
When would you use a close fitting tray instead of a one with 2-3mm spacer and what material would you use to take the impression?
- in resorbed ridges
- medium or light body silicone , or impression paste (ZOE)
What is this?
Post dam ( on vibrating line) which is marked with a pencil
How would you modify this if you have a retching patient?
Mark a second post dam anterior to this , to modify the denture later if needed but cutting a second post dam
What two materials can you enforce the record blocks with?
- Shellac base
- Heat cured acrylic baseplate
Which line helps with getting the anterior occlusal plane during jaw registration?
- interpupillary line
Which line helps with getting the posterior occlusal plane?
Ala-tragus line
What would you use to helps adjust the record blocks?
- Fox’s occlusal plane
What is the first line that you will mark in the record block?
Centreline
How would you ensure you get the correct horizontal component of the occlusion in the jaw registration stage?
Get the patient mandible in a retruded position
What will you use to aid measuring the freeway space?
- dividers
- willi’s bite gauge
How would you seal the upper and lower record blocks?
Cut notches and seal with registration paste
What would you tell the lab to do after taking the jaw reg?
- mount the casts on an articulator and set up the teeth
Other than registering the occlusion, what else would you do in the jaw reg stage?
- Choose shade of teeth
- Setting of teeth
- Mould of teeth
When will consider using cuspless teeth?
- When the patient struggles to get into retruded contact position (resorbed ridges)
How would the lab set the teeth on the wax trial?
- upper anteriors then posteriors then upper to lower
What 6 things would you check in try in stage?
- Vertical dimension of occlusion
- Even contacts in RCP
- Lip support
- Occlusal planes
- Lower teeth over ridge
- Speech
- Retention and stability
- Appearance
- Base extensions
When would you review the patient after delivering the denture?
1-2 weeks
What 6 things would check when inserting the denture?
- Vertical dimension of occlusion
- Even contacts in RCP
- Speech
- Retention and stability
- Base extensions
- Appearance
- Comfort
What would you give the patient before they leave? and under which legislations is that stated?
- Statement of manufacture - Give them a copy of the laboratory prescription
- Medical devices regulations 2019
What 5 things would you review at review stage?
- Pain, redness , ulceration
- Function
- Speech
- Aesthetics
- Recheck occlusion and vertical dimension
A patient comes back at review appointment and is complaining of pain, what would you do?
- Put PIP on fitting surface
- fit in and adjust high spots (using acrylic bur and straight handpiece)
What are 3 advantages of replica dentures over conventional dentures?
- Easier to adapt as same design
- Maintain current aesthetics
- 1 less clinical stage ( only one impression in the mouth)
What is the disadvantage of replica dentures?
Major modifications is difficult
When would you use a conventional denture over a replica? 2
- if no previous denture
- previous denture is poor or unsuccessful
What is the advantage of conventional over replica?
Can make major modifications on it and correct faults more easily
What is a disadvantage of conventional compared to replica?
- Takes longer
- Changes appearance significantly and patient needs time to adapt
