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Complete Removable Prosthodontics > Edentulous Anatomy > Flashcards

Edentulous Anatomy Flashcards

(60 cards)

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1
Q

masticatory mucosa

A

highly keratinized, best denture support (on ridge, not moving)

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2
Q

lining mucosa

A

thin, non keratinized mucosa of lips and cheek. forms seal against denture, but does not resist stress (moves, dont want an impression of this)

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3
Q

specialized mucosa

A

dorsal surface of tongue, is keratinized, contains taste buds

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4
Q

characteristics of the ideal denture bearing tissue (4)

A
  1. firmly bound, keratinized masticatory mucosa
  2. a zone of CT and submucosa
  3. underlying cortical bone
  4. muscle attachments nearby (enhance resistance to bone resorption)
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5
Q

centripetal resorption

A

routine resorption pattern following extraction of teeth results in a smaller maxilla when compared to dentate arch

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6
Q

labial frenum (4)

A

contains no muscle fibers
inserts in vertical direction
little lateral movement in function
north in denture should be narrow

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7
Q

labial vestibule (2)

A

space between labial frenum and buccal frenum

reflection contains no muscle fibers

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8
Q

buccal frenum (4)

A

single or multiple
anterior posterior direction of reflection
may contain few fibers of caninus muscle
notch in denture is broad since movement of frenum is affected by buccinator and oribularis oris muscle

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9
Q

notch in denture is broader as — frenum than — frenum

A

buccal, labial

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10
Q

buccal vestibule (corona-maxillary space) (3)

A

between buccal frenum and hauler notch
space varies in size
space must be filled vertically and laterally by denture flange to prevent ingress of air and loss of retention of maxillary denture

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11
Q

buccal vestibule is also known as the

A

retrozygomatic space/fossa

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12
Q

retrozygrmal fossa (Space)

A

vestibular space posterior to zygoma

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13
Q

how do you find the retrozygomal fossae?

A

palpate zygomatic process in buccal vestibule just buccal to first maxillary molar

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14
Q

is the retrozygomal space commonly captured in preliminary impressions?

A

commonly incompletely captures, use syringe technique

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15
Q

how to find the coronoid process? (4)

A

place mirror head lateral to tuberosity
move mandible to opposite side
note binding or pain
this gives some indication of the width of the space for flange

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16
Q

the coronoid process determines the

A

functional space in the retrozygomal space

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17
Q

complete denture retention (6)

A 
adhesion
cohesion
interfacial surface tension
intimate tissue contact 
border seal: prevent ingress of air 
neuromuscular control by patietn
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18
Q

hamular notch (2)

A

narrow cleft between tuberosity and pterygoid hamulus

denture must extend into hamular notch area

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19
Q

posterior border denture

A

hamular notch

sometimes posterior to where the depression in the soft tissue appears

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20
Q

humlar notch is “—” for comfort and retention

A

soft disposable tissue

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21
Q

how to mark the hauler notch

A

use the head of your mirror to palpate the notch and mark with an indelible marker

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22
Q

maxillary tuberosities (3)

A

oversized
resorbed
undercut

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23
Q

vibrating line

A

the junction of moveable and immovable tissues of the soft palate
on the soft palate, NOT the junction of hard and soft palate

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24
Q

tissues are yielding and easily —

A

displaced

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25
fovea palatini (4)
unique to humans coalescence of mucous glands one on each side of midline are in general area of the vibrating line. much individual variation. only a guide
26
fovea palatini is in the area of the
vibrating line
27
median palatine raphe (midline palatine suture) (2)
a bony midline structure, no cushioning effect | may require relief when covered by a denture
28
rugae (2)
secondary denture support area | resists anterior displacement of denture
29
incisive papilla (3)
landmark for the setting of anterior teeth pad of CT overlying nasopalatine canal opening not tolerant of pressure from denture
30
palatal vault form
ideal is medium depth, with well defined sugar in anterior
31
if ridges are severely resorbed,
inform the patient | u shaped, v shaped
32
torus palatines mau require
removal (if on the vibrating line, need to make a posterior seal)
33
where is the posterior palatal seal found
distal to junction of hard and soft palates
34
posterior palatal seal
glandular and fibrous connective tissue which may be slightly compressed without harm
35
purpose of the posterior palatal seal
retention of maxillary CD
36
functions of the posterior palatal seal (4)
1. completes border seal of max CD 2. compensates for dimensional changes in processed resin 3. gives firm contact with tissues of soft palate which reduces sagging 4. presses into tissue making posterior border less conspicuous to tongue
37
``` house classification of soft palates class 1 class 2 class 3 ```
``` class 1: >5 mm tissue available, ideal class 2: 1-5 mm tissue available, adequate class 3: <1 mm tissue available, poor ```
38
hoses classifications
classification of the soft palate according to hope it drapes
39
``` tolerance and location: class 1 class 2 class 3 ```
``` class 1: easiest to tolerate, broadest range, hardest to locate class 2: most common, middle class 3: easiest to locate, hardest to tolerate ```
40
mandibular arch anatomy (3)
labial frenum labial vestibule buccal frenum
41
buccal frenum may contain fibers which attach to "---", structure at corners of mouth where 8 muscles converge
modiolus
42
buccal shelf (4)
area posterior to buccal frenum denture base should cover completely between height of the ridge and external oblique ridge resorbs more slowly
43
primary denture bearing area of mandibular denture
buccal shelf
44
pterygo mandibular raphe (3)
connects from hamulus to the mylohyjid ridge when prominent, can cause pain, or loosening requires relief groove if prominent narrow, ligamentous band extending form pterygoid hamulus ti posterior part of mylohyjid line buccinator m and superior pharyngeal constrictor muscle fibers enter limits length of max and mandible CDs
45
retromolar pad (3)
soft pad containing glandular tissue inverted pear shape, posterior border created from carrying after extractions an important landmark in removable pros a triangular pad of soft tissue at posterior end of mandibular residual ridge
46
retromolar pad contents (5)
1. loose submucosa 2. glandular tissue 3. fibers of buccinator and sup. pharyngeal constrictor muscles 4. pterygomandibular raphe 5. temporalis muscle tendon fibers
47
what happens if retromolar pad is not covered by denture base?
excessive resorption of residual ridge
48
lingual frenum (2)
anterior attachment of tongue | overlies genioglossus muscle
49
mylohyjid ridge (2)
origin of mylohyjid muscle which influences length of lingual flange can be prominent and or sharp, requiring relief
50
alevolingual sulcus
space from lingual frenum to retromylohyoid curtain in posterior
51
retromylohyoid space (3)
distal end of lingual sulcus area posterior to the mylohyjid muscle good seal aids in retention and stability
52
anatomy of the DL vestibule (5)
1. mylohyjid muscle 2. palatoglossus muscle 3. superior constrictor muscle 4. pterygomandibular raphe 5. buccinator muscle
53
retromylohyoid fossa
denture flange adapts laterally close to body of mandible, producing typical S curve
54
residual ridge (2)
a secondary support area | size decreases with time
55
pressure on ridge results in
blood supply interrupted, bone resorption
56
we want to minimize pressure and speed out the pressure onto a wider support base, also known as the
selective pressure technique
57
resorption is more severe on which arch?
mandible than maxillary
58
how long to remove dentures per day
8 hr/day to allow tissues to rest
59
proper impression techniques (3)
record tissues at rest denture base extensions using maximum support area place pressure on those areas that can withstand pressure
60
reducing pressure on residual ridge (2)
clinical remount and occlusal refinement at delivery of dentures to patient no contact of opposing anterior teeth in centric relation

Complete Removable Prosthodontics (20 decks)

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