Lecture 2: Complete Denture Insertion Flashcards
(32 cards)
When is a lab remount completed?
After processing, before they are removed from the master casts to check for processing errors →
Sometimes teeth can move during processing. You’ll need to correct occlusion when mounted with a handpiece.
What is the purpose of an insertion appointment?
It is to eliminate errors and correct any mistakes
How long should a patient leave out old dentures prior to an insertion appointment?
For at least 24 hours prior to the appointment, so the tissues are at rest
Prior to delivery, what must happen to the dentures?
They must be soaked in water for at least 72 hours
What is pressure indicator paste and what is it used for?
It is a zinc oxide paste→
It is used to see if there are any premature contacts from the intaglio surface of the denture in the patient’s mouth
What does the PIP paste help measure?
It helps to measure:
- Accuracy of tissue contact
- Detect improper adaptation
Do you want to remove the islands of pink in the sea of white?
YES! ☺
What form of PIP can be used in patients with xerostomia?
The PIP spray→
This helps to prevent the PIP from sticking to the mucosa
What is the sequence for how to use PIP?
- Dry the denture surface
- Brush a thin layer of PIP onto the denture
- Seat the denture with pressure in the first
molar region - Remove immediately
- Inspect and adjust bearing surfaces as
necessary
Phonetics, or a variation in speech, can be due to what?
- The thickness of the maxillary cast - Extra saliva in the mouth
If there is not enough interocclusal space, will the teeth touch or not?
They will touch
If there is too much interocclusal space, will the teeth touch or not?
They will NOT touch
When evaluating the borders of a denture, what should you consider?
- Are borders and contours compatible with the available space in vestibules?
- Are borders relieved at frenal attachments?
- Are the dentures stable during speech and
swallowing?
What material can be used to adjust the border of a denture?
Disclosing wax
What three things can cause gagging?
- Excessively thick palate
- The palatal extension is too long/ too short
- There is a lack of tongue space
What else can cause gagging?
- Loose dentures
- Poor occlusion
- Incorrect extension of contour
- Incorrect teeth positions
- Excessive OVD
- Psychogenic factors
Denture wearer’s will have __________ efficient function of natural teeth in order to preserve supporting tissues.
20%
Biting force of the natural dentition is _______ that of denture wearers
5X
What is the desired occlusion for denture wearers?
Balanced occlusion→
- Want simultaneous contact of all posterior teeth in
retruded mandibular position - Want absence of contact for anterior teeth
- Want absence of deflective interferences in
eccentric movements
What can be common sources of occlusion errors?
▪ Resin shrinkage when processing
▪ Ill-fitting temporary record bases
▪ Changes in OVD on articulator
▪ Inaccurate max-mand record by dentist ▪ Incorrect arrangement of teeth
▪ Acrylic overheated when polished ▪ Water absorption
What is one way to look for posterior flange contacts beyond the tooth contacts?
Look at the dentures when hand occluding them
When do you perform a clinical remount?
After all adjustments have been made and polished
What is the purpose of a clinical remount?
It is to make sure the occlusion is correct outside of the mouth.
- They are done before the final delivery of dentures
- You will need to deprogram the musculature to get
into CR, then take interocclusal record and remount
What are the advantages of a clinical remount?
▪ Absence of saliva (more accurate marks with articulating paper)
▪ Reduces patient participation (dentist can see better, grinding done away from patient)
▪ Has a stable working foundation
