Anatomy of Denture bearing Area - maxilla Flashcards
What can destabilise the denture?
Muscles, during swallowing or eating
What are the astrix showing?
These points are not static, the change with teh muscles
What other structures can have an effect on the denture?
Ligaments, frenulum and glandular tissues
Can the pterygomandibular raphe affect the denture?
Yes, when opening mouth it may impede on it
What effect does the labial Freya have on the denture?
Different to buccal frenulum
Said to contain no muscle fibres but CT
It may destabilise the denture
If there is no relief for the labial frena, may cause trauma and ulceration - not so much destabilisation of denture but trauma
Can a space for the labial frena affect the denture?
Yes, it can cause a midline fracture
How do you relieve the denture at the labial frena?
Make it a U shape instead of a V shape
Do you sometimes have to surgically remove the labial frena?
Yes, if it is particularly large
What area is beyond the 3rd molar?
Retromolar pad
What is the role of the retromolar pad in dentures
Contains glandular tissue
Compressible tissue
Are can be shed for retention
How much of the retromolar pad shows k the denture be extended to?
About half
What is shown here?
Retromolar pad
Do you consider the maxillary denture/dentition with the retromolar pad?
Yes - the heel will ht against it when the mouth is closed and destabilise denture
How do you know the maxillary denture is destabilised?
Dropping of anterior portion
Where does the coronoid process lie in relation to the maxillary?
Lies lateral to the maxillary tuberosity
What can the coronoid process impead on? What does this cause ?
Sometimes impead on the buccal flange o a denture and case pain or instability
Where does the coronoid process go when you open the mouth?
Towards 3rd molar
Impead on the flange
What happens of the buccal flange is to thick?
When you open the mouth the coronoid notch will impeded on it, cause pain form tissues ver coronoid notch