Questions from Midterm Flashcards
Dentinogenics is based on age, sex, and personality. T or F
True
Extension of the posterior border of the distolingual flange of the amndibel is limited by what muscle?
superior pharyngeal constrictor
What object is closest to the tuberosities and affects the shape of the impression border?
hamular notch
problems with dentures and the labial flange are often associated with….
zygomatic process
T or F: the width of the maxillary central incisor is 1/32 the bizygomatic width.
False 1/16
Anterior 6 approx bizyg width divided by 3.3
From midsagittal view the ala tragus plane is what degree angle to the frankfort horizontal plane?
10 degrees
What is the purpose fo using centric relation?
recorded with accuracy is verifiable, repeatable, horizontal mandibular position
How should you determine OVD?
combo of several methods
T or F: When establishing OVD, the resting dimension should be less than the occluding dimension.
False, resting is larger b/c OVD + IOD
What is the most important factor in determining success of complete dentures?
patient-doctor relationship
A pt with high resorption on ridges and little neuromuscular control should have what kind of CD occlusion?
monoplane
Diff between frankforts and camper’s plane?
10 degrees
The incisal edges of the maxillary central incisors should be ____________ anterior to the midpoint of the incisive papilla.
8-10 mm
The anterior teeth should be arranged with ______ of vertical overlap.
0.5-1 mm
What muscle determines the form of the lingual flange of the mandibular denture?
mylohyoid
Does the soft palate determine the shape of the buccal vestibule?
nah
The vibrating line is the ….
location of the junction of the moveable and immoveable tissues of the soft palate
primary purpose of the posterior palatal seal
retention of maxillary CD (due to shrinkage of the resin)
important objective of the final secondary impression is to….
record the detail of the denture bearing area in an unstrained and undistorted state
saying ah makes the palate move….
up
holding the nostrils and blowing out makes the soft palate move…
down
What number is fixed?
- plane of occlusion
- compensating curve
- incisal guidance
- condylar angulation
condylar angulation
How do you border mold the alveolarlingual sulcus?
move the tongue around
What relationship is being measured with CR?
hinge axis of mandible and maxilla relation
What are three good denture bearing areas?
- connective tissue and underlying mucosa
- keratinized mucosa
- underlying cortical bone
What is the problem with dentures and a retruded tongue?
the tongue is used to help retain the mandibular denture
T or F: it is not necessary to take impressions of a patient that does not need dentures now but will later
false
Which house classification is easiest to find the vibrating line but hardest for a pt to tolerate a denture?
Class 3 (class 1 is hardest to find line but best for tolerance)
0, 10, 20, 30 in reference to denture teeth represent what?
cuspal inclination
Surface area of maxilla and mandible
Max: 23
Mand: 12
How much of the retromolar pad should the mandibular denture include?
all of it
What are three limiting structures to the mandibular denture?
- mylohyoid
- masseter
- labial frenum
The physiologic rest position provides what?
guide to vertical dimension of occlusion
What position is the LEAST repeatable?
vertical dimension of rest
In an edentulous pt, the coronoid process may….
limit the thickness of the buccal flange of the maxillary denture
What is on the posterior border of the maxillary denture base?
hamular notch
What is the primary support area for the maxillary denture?
hard palate
What is the freeway space?
space between the teeth when in physiologic rest position (usually 2-4 mm)
How far up the retromolar pad should mandibular posterior teeth extend?
1/2 to 2/3 up pad
What is NOT a suitable occlusal scheme for complete dentures?
canine guidance
What is the function of the compensating curve in a set of complete dentures?
develop a balanced occlusion
