Edentulous Challenge

Question 1

complete endentulism and comorbidities

Answer 1

can effect the whole body

Question 2

artificial teeth rest on

Answer 2

mucous membranes

Question 3

pressure on mucosa causes (2)

Answer 3

soreness

resorption

Question 4

complete dentures move in relation to the

Answer 4

underlying bone during function

Question 5

more movement=

Answer 5

more soreness and resorption

Question 6

causes of denture movement (2)

Answer 6

resiliency of tissue

instability of the dentures

Question 7

almost all the principles of complete denture fabrication have been formulated to (2)

Answer 7

decrease movement of the dentures or to minimize the forces transmitted to the supporting structures

Question 8

problem: in the edentulous state, there are

Answer 8

few natural adaptive mechanisms left. the dentures rest of tissues that will change progressively and irreversibly

Question 9

support

Answer 9

resistance to vertical movement toward the underlying tissues

Question 10

support in the natural dentition (4)

Answer 10

dentin
cementum
PDL
alveolar bone

Question 11

— cm2 area of PDL in each arch

Answer 11

45

Question 12

mean denture bearing areas

Answer 12

maxilla: 23 cm2
mandible: 12 cm2

Question 13

mean denture bearing areas decrease as

Answer 13

ridges resorb

Question 14

wolffs law

Answer 14

living bone responds to functional stress by depositing bone in areas of stress
remarkable adaptability of natural teeth/masticatory system

Question 15

edentulous patients

Answer 15

very little adaptation to functional stress on alveolar bone

Question 16

wearing of dentures is almost always accompanied by

Answer 16

an undesirable loss of bone

Question 17

in complete denture wearers the mean reduction in anterior mandibular ridge is -x that of the maxillary ridge

Answer 17

4x

Question 18

reducing pressure on residual ridges (4)

Answer 18

remove dentures at least 8 hr/day
proper impression techniques
no contact of anterior teeth in centric relation closure
clinical remount and equilibration at delivery to reduce occlusal discrepancies

Question 19

proper impression techniques (3)

Answer 19

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

Question 20

bone is not a static

Answer 20

tissue

Question 21

bone is constantly being

Answer 21

remodeled/ replaced

Question 22

maxillary ridge

Answer 22

partly covered by a layer of cortical bone after teeth are extracted

Question 23

mandibular ridge

Answer 23

crest remains spongy, trabeculated and not very resistant to resorption

Question 24

— — of mandible is primary denture support area on mandibular arch

Answer 24

buccal shelf (compact bone)

Question 25

snowshoe principle

Answer 25

decrease the pressure per unit area by extending the denture base to cover the maximum area within physiologic tolerance (support)

Question 26

more saliva contact=

Answer 26

more contact adhesion (retention)

Question 27

proper peripheral extension=

Answer 27

good border seal (retention)

Question 28

retention

Answer 28

resistance to dislodgment/resistance to movement away from the foundation

Question 29

saliva (2) affect denture retention

Answer 29

quantity

quality

Question 30

xerostomia

Answer 30

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

Question 31

amount of retention attributable to adhesion is directly proportional to the

Answer 31

wettability of the denture base material, to the area covered by the denture base, and the viscosity of the saliva

Question 32

stability

Answer 32

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

Question 33

stability factors (4)

Answer 33

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

Question 34

flange

Answer 34

length of base that fits the mouth, edge of the denture

Question 35

complete dentures are often regarded as substitute treatment for

Answer 35

expensive restorative therapy, periodontal therapy, or for an unaesthetic dentition

Question 36

denturism

Answer 36

dentures made by someone other than a dentist

Question 37

complete denture steps include (3)

Answer 37

diagnosis
treatment planning
denture fabrication

Question 38

do dentures cure edentulism?

Answer 38

no

Question 39

dentures are not substitutes for natural teeth, dentures are

Answer 39

substitutes for no teeth