Dentures 1-2

Front 1

largest demographic group in US

Back 1

older than 65

Front 2

When will >65 pop double?

Back 2

2030

Front 3

How many ppl need dentures

Back 3

40 million

Front 4

how many edentulous ppl in US?

Back 4

32 million - 75% of them have messed up dentures

Front 5

How many new sets of dentures are made annually?

Back 5

12 million per year

Front 6

Baby boomers (56-66) represent what % of the pop?

Back 6

44%

Front 7

how much of disposable income (incl dental care) spent annually in US does the >65yo group control?

Back 7

50%

Front 8

How much % dental care goes to >65 yo

Back 8

70% of all dental care

Front 9

What is an opposing cast?

Back 9

opposing a restoration you're going to do - may eventually become part of the treatment cast

Front 10

t/f Preliminary impressions are positive likeness of the surface of an object.

Back 10

False - negative

Front 11

Sodium alginate is a reactant, retarder, or filler?

Back 11

reactant

Front 12

Calcium sulfate dihydrate is a reactant, retarder, or filler?

Back 12

reactant

Front 13

Sodium phosphate or sodium carbonate is a reactant, retarder, or filler?

Back 13

retarder

Front 14

How high should the tray land above the ridge?

Back 14

4-6 mm

Front 15

A1 Preliminary Impressions

Back 15

p 282

Front 16

T/F preliminary mandibular impressions must always capture the retromolar pad

Back 16

TRUE

Front 17

Whic muscle often exhibits a fatty pad that partially covers the retromolar pad?

Back 17

masseter

Front 18

TF if the masseter roll of tissue partially covers the retromolar pad area in a prelim. impression, then you'll have to retake the impression.

Back 18

false - diganostic cast will be fine even if fatty roll is captured in the impression

Front 19

When is periphery wax indicated?

Back 19

Tray must have 6mm space from tissues. If a larger space exists or an extension must be increased, wax is indicated

Front 20

T/F Adding wax adhesive may not be necessary if the tray has retention holes or rim locks.

Back 20

TRUE

Front 21

TF the impression tray should be fully loaded with alginate.

Back 21

False - 3/4 fill

Front 22

T/F the hamular notch area must be completely captured in both the prelim and final impression.

Back 22

TRUE

Front 23

TF Since the vibrating line extends far posteriorly, it is impossible to accurately capture in a prelim and final impression

Back 23

false - must be captured

Front 24

Which part of the maxillary prelim impression tray should you seat first - posterior, lateral, or anterior?

Back 24

posterior

Front 25

4 nonanatomic parts of cast

Back 25

base, heel, land area, thinnest portion

Front 26

minimum height of the thinnest areas

Back 26

18 mm

Front 27

where are the thinnest areas

Back 27

heel L/center/R

Front 28

formal name of the midline frenulum

Back 28

upper medial labial frenum

Front 29

center frenulum name

Back 29

labial frenulum

Front 30

lateral frenum name

Back 30

buccal frenulum

Front 31

what 2 locations does the pterygomandibular raphe attach to?

Back 31

hamulus of medial pt plate AND posterior end of mylohyoid line

Front 32

what lies just buccal to the crest of the mandibular ridge/retromolar pad in DB corner of mandible?

Back 32

masseteric notch (45 degree area)

Front 33

anatomic area in the alveolingual sulcus just lingual to retromolar pad, bunded by mylohyoid ridge and retromylohyoid curtain, and anteiror tonsillary pillar

Back 33

retromylohyoid fossa/space/area

Front 34

tendon of which muscle runs through the hamular notch

Back 34

tensor veli palatini - overextension can cause denture destab.

Front 35

how far and in what direction are the fovea palatini in relation to the vibrating line?' function?

Back 35

2mm anterior; minor salivary gland ducts

Front 36

primary stress bearing area max

Back 36

crest of residual ridges

Front 37

primary stress bearing area mand

Back 37

buccal shelf

Front 38

secondary stress bearing area max

Back 38

labial and palatal slopes of the ridges [LP max]

Front 39

secondary stress bearing area mand

Back 39

facial and lingual slopes of the ridges [FL man]

Front 40

thinnest area on base dimension

Back 40

18 mm

Front 41

thinnest area on max

Back 41

labial slopes, center of palate

Front 42

thinnest area on mand

Back 42

facial and lingual slopes

Front 43

center line on palate

Back 43

midpalatine raphe

Front 44

vibrating line runs bilaterally through....

Back 44

hamular notches

Front 45

submandibular glands open up as

Back 45

sublingual caruncles

Front 46

CH 3 p43

Back 46

ANATOMY OF EDENTULOUS RIDGES

Front 47

Q1 What is the name of the site where the mucous membrane lining of the lips and cheeks reflects and joins the unattached ginigva or alveolar mucosa?

Back 47

fornix of the vestibule - where lips/cheecks mucous membrane joins alveolar mucosa

Front 48

Q2 Besides location, waht is the one major difference b/w the upper medial labial frenum (the frenulum) and the buccal frenula?

Back 48

upper medial labial frenulum DOES NOT contain muscle; the buccal frenum DOES contain muscle

Front 49

Q3 Which resorps more - the maxilla or the mandible?

Back 49

mandibular ridge resorps 4x > max

Front 50

Q4 Why is the incisal papilla a good landmark to note when contouring occlusion rims and positioning the denture teeth?

Back 50

facial surfaces of central incisors are 8-10mm anterior to middle of incisal papilla; canine tips are in line with middle of incisal papilla

Front 51

Q5 Why is the location of the fovea palatini important to note in the edentulous pt?

Back 51

2 mm from vibrating line

Front 52

T/F Max complete denture should NOT cover the hamulus.

Back 52

TRUE

Front 53

Q6 Why is the hamular notch an important landmark in denture fabrication?

Back 53

b/w hamulus and max. tuberosity, the hamular notch marks the vibrating line (maximum posterior extent of the denture) runs bilaterally THRU the hamular NOTCHES

Front 54

Q7 What structure is located distal to the last mandibular molar and why is it important in making compl. dentures?

Back 54

retromolar pad - should be covered by denture & occlusal plane is located at the level of the middle-upper 1/3 of the pad

Front 55

Q8 Just buccal to the crest of the manibular ridge in the DB corner of the arch is the massteric notch/groove area. Why is this imp. when making/wearing mand compl. dentures?

Back 55

this fatty cheek area must often be lifted to eliminate the fatty roll from a final impression - if not, dentures will be overextended and cause irritation/instability

Front 56

Q9 What/where is the buccal shelf, why imp?

Back 56

buccal shelf is the PRIMARY stress-bearing area of the mandiibular arch. Medially bounded by the crest of the residual ridge, laterally bounded by the external oblique ridge, in the mesial area by the buccal frenulum and on the distal side by the masseter. Just anterior to the masseter notch.

Front 57

Q10 What is the area that determines the most D-L extent of a mand. complete denture and what difficulites may the clinician have with this area?

Back 57

retromylohyoid area/fossa. This is the most distal extension of the mandibular denture . The opposing retromylohyoid areas are usually undercut in relation to each other. These undercuts complicate impressions