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dentures > custom trays for edentulous patients/edentulous anatomy > Flashcards

custom trays for edentulous patients/edentulous anatomy Flashcards

1
Q

with preliminary impressions and casts, you draw a line that marks the depth of the vestibulars and then another ____ mm up for both max and mand that represents the depth line

with mandibular custom tray, how far do you extend the depth line at the retromolar pads?

how far past the fovea palatine is the max tray?

A

2mm

with mand retromolar pads, depth line and depth of vestibule line are the same

1mm

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2
Q

crest of ridge and retromylohoid area

rugae and vertical undercuts

A

top is mand

bottom is max

what you put wax over(block out) to prevent displacement of tissue

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3
Q

the mucosa. highly keratinized, best denture support

A

masticatory

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4
Q

the mucosa. thin, non-keratinized mucosa of lips and cheek. forms seal against denture but does not resist stress

A

lining

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5
Q

the mucosa. dorsal surface of tongue. is keratinized, contains taste buds

A

specialized

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6
Q

characteristics of ideal denture-bearing tissue
1
2
3
4

A
  1. firmly bounded, keratinized masticatory muscle
  2. zone of connective tissue and submucosa
  3. underlying cortical bone
  4. muscle attachments nearby (enhance resistance to bone)
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7
Q

routine resoprtion pattern following extraction of teeth results in a SMALLER MAXILLA when compared to dentate arch

A

centripetal resorption

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8
Q

-contains no muscle fibers
-inserts in vertical direction
-little lateral movement in function
-notch in denture should be NARROW

A

labial frenum

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9
Q

space between labial frenum and buccal frenum
-reflection contains NO muscle fibers

A

labial vestibule

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10
Q

single or multiple
-ant-post direction of reflection
-contains FEW FIBERS
-notch in denture is BROAD since movement of frenum is affected by _____ and ____ muscles

A

buccal frenum

buccinator and orbicularis oris muscles

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11
Q

between buccal frenum and hamular notch
-spaces varies in size

A

buccal vestibule

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12
Q

the buccal vestibule MUST be filled vert and laterally by denture flange to prevent ingress of ____ and loss of _____ of max dentures

A

prevent ingress of air and loss of retention

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13
Q

another name for buccal vestibule

A

retrozygomatic space

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14
Q

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

-vestibular space posterior to zygoma

A

retrozygomatic space

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15
Q

commonly incompletely captured in preliminary impressions
-use synringe tech

A

retrozygomatic space

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16
Q

this area gives indication of width of space for flange
-lateral to tuberosity

A

coronoid process

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17
Q

list complete denture retention
1
2
3
4
5
6
7

A

adhesion
cohesion
interfacial surface tension
intimate tissue contact
border seal- prevent ingress of air
-neuromuscular control by patient

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18
Q

narrow cleft between tuberosity and pterygoid hamulus
Denture MUST extend here

A

hamular notch (ptergomaxillary notch)

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19
Q

posterior border denture
-between bony tuberosity and hamulus
“soft displaceable tissue” for comfort and retention

A

hamular notch

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20
Q

coalescence of mucosa glands.
-one on each side of midline
-are in general area of vibrating line.

A

fovea palatini

21
Q

midline palatine suture

A

median palatine raphe of hard palate

22
Q

bony midline structure, no cushing effect
-may require relief when covered by denture

A

hard palate median palatine raphe

23
Q

max secondary denture support area
-resists anterior displacement of denture

A

rugae

24
Q

landmark for setting of anterior teeth
-pad of connective tissue overlying nasopalatine canal opening

A

incisive papilla (8-10mm teeth placed from papilla)

25
Q

-ideal is MEDIUM DEPTH
with well defined rugae in anterior
(how tall ridge is in anterior)

A

palatal vault form

26
Q

maxillary primary support area

A

horizontal anterior and posteriolateral hard palate

27
Q

maxillary secondary support area

A

ridge crest

28
Q

max mid line requires what while border is noncontributing to support

A

relief

29
Q

the purpose is retention of maxillary complete denture

A

posterior palatal seal

30
Q

FUNCTIONS of this: not purpose
1. border seal of max CD
2. compensates for dimensional changes in processed resin!!!!!!!
3. gives firm contact with tissues of soft palate while reducing gag
4. presses into tissue making posterior border less conspicuous to tongue

A

posterior palatal seal

31
Q

house classification of soft palate.

> 5mm tissue available

A

ideal and Class 1

32
Q

house classification of soft palate.

1-5 mm tissue available

A

adequate
class 2

33
Q

house classification of soft palate.

<1mm of tissue

A

class 3 poor

34
Q

house’s classification. (angle classification)

easiest to tolerate=
broadest range=
hardest to locate=
most common
easiest to locate=
hardest to tolerate=

A

easiest to tolerate= class 1
broadest range= class 1
hardest to locate= class 1
most common= class 2
easiest to locate= class 3
hardest to tolerate= class 3

35
Q

may contain fibers which attach to “modiolus” a structure at corners of mouth where 8 muscles converge

A

buccal frenum

36
Q

mand:
area posterior to buccal frenum
-primary support area for CD (mand)
-denture base should cover completely

A

buccal shelf

37
Q

primary denture bearing area of mandibular denture
-between height of ridge and external oblique ridge

A

buccal shelf

38
Q

secondary support area for mand dentures:

relief arreas

A

ridge crest and area of genial tubercles

relief area: lingal and labial ridge inclines

39
Q

narrow ligamentous band extending from pterygoid hamulus to posterior part of mylohyoid line

-buccinator muscle and superior pharyngeal constrictor muscle fibers enter

-limits length of max and mand CDs

A

pterygomandibular raphe

40
Q

-when prominent, can cause pain or loosening
-requires relief groove if prominent
-connects from hamulus to mylohyoid

A

pterygomandibular raphe

41
Q

triangular pad of soft tissue at posterior end of mandibular residual ridge
-pear shaped pad
-created from scarring after extractions

A

retromolar pad

42
Q

excessive resorption of residual ridge occurs of max if what is not covered

A

retromolar pad

43
Q

-anterior attachment of tongue
-overlies genioglossus muscle

A

lingual frenum

44
Q

-origin of mylohyoid muscle which influences length of lingual flange
-can be prominent and sharp requiring relief

A

mylohyoid ridge

45
Q

space from lingual frenum to retromylohyoid curtain in posterior mand

A

alveololingual sulcus

46
Q

-distal end of lingual sulcus
-area posterior to the mylohyoid muscle
-good seal aids in retention and stability

A

retromylohyoid space

47
Q

denture flange adapts laterally close to body of mandible producing typical S CURVE

A

retromylohyoid fossa

48
Q

mand secondary support area
-size decreases with time

A

residual ridge

49
Q

residual ridge resorption-> blood supply interrupted->

A

bone resorption

dentures (9 decks)

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