exam questions Flashcards
distolingual flange on mandibular denture is affected by
superior constrictor muscle and palatoglossus muscle (retromylohyoid area)
distobuccal corner on mand denture is affected by
masseter
(distobuccal border and masseteric notch)
- How do you record border of alveolar lingual sulcus during mandibular border molding
patient swallows or protrudes tongue but not past lips
buccal vestibule all of these are true except
a. posterior of labial frenulum
b. also called retro zygomatic space
c. should be filled completely by denture
d. conforms to shape of denture
a. it is posterior to buccal frenum
what structure is closest to the max tuberosity and affects the shape of the impression border
a. articular eminence
b. coronoid process
c. external oblique ridges
d. mylohyoid ridge
coronoid process
PRP=
IOD(2-4mm space)+OVD(teeth touching)
when you say ahh, how does soft palate move?
during valsalva (pinching nose), how does soft palate move?
ahh= soft palate up
valsalva= soft palate down
4 characteristics of ideal denture bearing tissue
- Firmly bound, keratinized masticatory mucosa
- Zone of CT & submucosa
- Underlying cortical bone
- Muscle attachments nearby (enhance resistance to bone resorption)
when is posterior palatal seal placed?
after secondary impressions and before maxo-mandibular articulation
(during make of occlusal rims and secondary casts)
primary purpose of posterior palatal seal?
retention of maxillary complete denture
NOT for shrinkage
posterior palatal seal depth
1-1.5 mm
posterior palatal seal is ___% shrinkage of acrylic
7%
what limits labial flange?
what limits buccal flange?
labial- i think just labial frenum
buccal-buccal frenum and coronoid process
(soft palate DOES NOT)
- True/False: During a patient’s initial appointment, it is not necessary to take alginate impression casts because they will need complete dentures later.
false it is necessary
Resistance to horizontal/rotational movements
stability
Resistance to displacement of denture away/vertically from ridge
resistant to dislodging
retention
Resistance to vertical movement of denture base toward ridge
support
Adhesion & atmospheric pressure support what main idea of complete dentures?
retention
- True/False: Complete dentures are a suitable substitute or replacement for normal teeth.
false they are a replacement for NO teeth
- Based on studies reviewed in lecture, which factor has the most impact on the final result of dentures?
relationship between dentist and patient
- In lab what are the measurements we use for horizontal & vertical overlap?
horizontal 1
vertical .5
- The maxillary anterior teeth should be placed how many mm from the intersection of the incisive papilla?
8-10mm
- Why does the maxillary arch have greater stability and retention than the mandibular arch?
greater surface area
PRP of mandible is best described as a postion determined by:
musculature
what saliva is ideal for max denture retention
thin, wet, and cover a large area
medications associated with xeromstomia
antidepressants, antipsychotics, opioids, skeletal muscle relaxants, anticholinergic drugs
antihistamine
antihypertensive
- Buccal vestibule is affected by all except:
a. Coronoid process
b. Soft palate tissue
b. soft palate not effected
what is greater, OVD or IOD
OVD is greater (IOD is like 2-4mm)
how to border the distal border and masseteric notch of the mandibular arch?
open wide and close on fingers
- What is the main ingredient in irreversible hydrocolloid?
diatomatious earth
4 ways of selective pressure techniques for making impressions. and 2 are for pressure relief
- wax spacer= relief
- drill vent holes in tray
- grind tray=relief space
- combination of the above
What do you do for a patient that has mandibular tori?
surgically remove them
What do you do when a patient bites down into OVD with old dentures and there’s only 1mm of space between retromolar pads and hamular notch tuberosity?
surgically reduce hamular tuberosities
What do you do when a patient bites down into OVD with old dentures and there’s only 4mm of space between retromolar pads and hamular notch tuberosity?
do nothing since it is the right height (ideal is 5-6mm)
what do you do when an OVD is too big?
increase IOD
Resorption of mandibular ridge is _____ faster than resorption of maxillary ridge
4x
- Maxillary ridge centripetal resorption pattern that results in a smaller maxilla?
smaller mandible?
upward and inward
mand: downward and outward
max denture must extend to
hamular notches
VIBRATING LINE is on the ________– not the junction of the hard and soft palates. it is the junction of the
moveable and immovable tissue
on the soft palate
What kind of palatal vault is good?
medium depth with well defined rugae in anterior
muscles on retromolar pad?
-fibers of buccinator and superior pharyngeal constrictor muscles
-pterygomandibular raphe
-temporalis muscle tendon fibers
resorption more severe on which arch
mand
remove dentures from mouth _____ hours a day to allow tissue to rest
8 hours
reducing pressure on residual ridge.
- clinical remount and occlusal refinement at delivery of dentures to patient
- NO CONTACT of opposing anterior teeth in centric relation
- During a facebow transfer, what is being measured in relation to centric relation?
maxilla to hinge axis
What order do you select teeth according to the book?
shade, size, mold
easiest to determine
shade
occlusal-gingival height and mesial-distal width
size
shape of the individual teeth
mold
the width of the central incisor is about _____ the bizygomatic width (end of eye to end of eye basically)
(house and loop)
1/16
the approximate combined width of 6 anterior teeth on a FLAT PLANE is the bizygomatic width divided by
3.3
based on age, sex, personality
dentogenics
based on shape of face
geometric theory
Closest speaking space with what sound?
S sound
according to zarb’s text, what is the purpose of secondary impressions?
capture all denture bearing area (mimic exact denture length or height)
Mandibular dentures has how much support compared to natural dentition of mandible?
1/4
denture surface area for the mandible is ____ the area of the maxilla?
1/2
from midsagittal view, ala tragus plane (camper’s plane) is what degree angle compared to frankfurt horizontal plane?
10 degree
actual old exam question but dont know answer:
- What is the Maxillary occlusal plane height of the tuberosities?
none of the above (this is the answer)
4mm minimum and 5-6 ideal!!!!!!!!!???
since talking about max, dont know. posterior teeth are 18mm with rem and 22mm in anterior for height. but nothing should be on the tuberosities.
- What class of edentulous patient is the most debilitated (weakened) in condition?
class IV
- Patient shows highly resorbed ridges and poor neuromuscular control, what type of occlusion should you make for them?
monoplane (non-balanced)
- What is the easiest class (soft palette) to recognize (locate) vibrating line but hardest to treat (patient tolerate)?
class III
- In accordance with Hanau’s Quint, what number is fixed?
condylar angulation
- True/False: 0°, 20°, 30° correlates to Posterior Occlusal Plane
false it corresponding to cusp height
- During a facebow transfer, what is being measured in relation to centric relation?
maxilla to hinge axis
***what touches in monoplane occlusion protrusive movement?
anterior teeth touch
(none of the above)
- what posterior teeth are touching in balanced occlusion movements?
(all simultaneous occlusal contacts of ant and post teeth)
so since it says posterior, i would say working side
bilateral simultaneous occlusal contacts of the ANT and POST teeth in excursive movements
balanced occlusion
lingualized, non-balanced has all the advantages of monoplane occlusion and also improved:
esthetics
what is the purpose of the compensating curve? C curve
used to develop balanced occlusion
hanau’s quint is what
formula for balanced occlusion
- Patient has anatomic, balanced occlusion. Maxillary lingual posterior cusps on the non-working side hit _____?
bucal side with lingual cusps
(central fossae areas of mandibular posterior teeth)
best way to visualize IOD?
talk rapidly
why do class III palate patients have a bad prognosis for dentures?
bad posterior palatal seal and bad denture retention
how do you record the buccal vestibule of the maxillary during border molding?
move mandible side to side
practice question:
in monoplane/non-balanced occlusion, during lateral/excursive movement what is touching of posterior?
only working side
practice question:
in monoplane non-balanced movement, what teeth are touching in protrusive movement for posterior teeth?
none
practice question:
in monoplane balanced occlusion, what teeth are touching in excursive movement?
all teeth- contact of ant and post teeth on both sides
practice question:
in monoplane balanced occlusion, what teeth are touching in protrusive movement?
posterior teeth contacts
