edentulous challenge

Question 1

pressure on mucosa causes

Answer 1

soreness and resorption

Question 2

causes of denture movement:

Answer 2

resiliency of tissue
instability of the dentures

Question 3

complete dentures move in relation to the underlying bone during function. more movement:

Answer 3

more soreness and resorption

Question 4

almost all principles of complete denture fabrication have been formulated to ________ of dentures or to ________ transmitted to supporting structures

Answer 4

decrease movement
minimize forces

Question 5

resistance to vertical movement toward the underlying tissues

Answer 5

support

Question 6

support in natural dentition

Answer 6

dentin-cementum-PDL-alveolar bone

Question 7

____cm2 area of pdl in each arch

Answer 7

45cm

Question 8

mean denture-bearing areas:
maxilla=
mandible=

**decreases as ridges resorb

Answer 8

maxilla=23cm2
mandible= 12cm2

Question 9

living bone responds to functional stress by depositing bone in areas of stress

-adaptability of natural teeth

Answer 9

wolff’s law

Question 10

very little adaptation to functional stress on alveolar bone

Answer 10

endentulous patients

Question 11

wearing dentures is almost always accompoanied by an undesirablel loss of bone. T or F

Answer 11

true

Question 12

in complete denture wearers, the mean reduction in anterior mandibular ridge is ______ times that of the maxillary ridge

Answer 12

4 times

Question 13

remove dentures at least:

Answer 13

8 hours per day

Question 14

proper impression techniques:

Answer 14

1. record tissues at rest
2. extend denture base to use maximum support area
3. placement of pressure on those tissues best able to tolerate pressure

Question 15

no contact of ________ in centric relation closure for reducing pressure on residual ridges

Answer 15

no contact on anterior teeth

Question 16

_______ and equilibriation at delivery to reduce occlusal discrepancies

Answer 16

clinicial remount

Question 17

bone is:

Answer 17

not a static tissue
and
constantly being remodeled/replaced

Question 18

bone of residual ridges:

Answer 18

max ridge
mand ridge
buccal shelf

Question 19

partly covered by layer of cortical bone after teeth are extracted

Answer 19

maxillary ridge

Question 20

crest remains spongy, trabeculated and not very resistant to resorption

Answer 20

mandibular ridge

Question 21

(compact bone) of mandible is PRIMARY denture support area on mandibular arch!

Answer 21

buccal shelf

Question 22

decrease the pressure per unit area by extending the denture base to COVER THE MAXIMUM AREA within physiologic tolerance (support)

Answer 22

snowshoe principle

Question 23

more saliva contact=

Answer 23

more contact adhesion (retention)

Question 24

proper peripheral extension=

Answer 24

good border seal (retention)

Question 25

resistance to dislodgement/resistance to movement away from the foundation

Answer 25

retention

Question 26

quantity and and quality affect denture retention

Answer 26

saliva

Question 27

dryness presents much difficulty for denture wearers- discomfort, ulcerations, retention loss, chewing problems

Answer 27

xerostomia

Question 28

attraction of unlike molecules for each other (mucosa-saliva-dent base)

Answer 28

adhesion

Question 29

amount of ____ attributable to adhesion is directly proportional to the WETTABILITY of the denture base material, to the AREA covered by the denture base, and to the VISCOSITY of the saliva

Answer 29

retention

Question 30

resistance to movement in the horizontal plane/ resistance to rotation/ resistance to lateral movement

Answer 30

stability

Question 31

stability factors

Answer 31

shape of alveolar ridges
size of alveolar ridges/vestibular depth
flange length and shape
intimate fit of prosthesis