the single denture

Question 1

natural teeth generate a _____ chewing force against opposing dentures

Answer 1

greater

Question 2

natural teeth _______ in function as a denture does

Answer 2

do not move

Question 3

______ puts natural teeth far from optimal positions

Answer 3

drifting/tilting

Question 4

routine resorption pattern following extraction of teeth results in a SMALLER MAXILLA when compared to denture arch

Answer 4

centripetal resorption

Question 5

maxilla resorbs:

mand resorbs:

Answer 5

up and inward

mand down and out

Question 6

horizontal arch discrepancy is created when:

Answer 6

maxilla arch narrows and becomes shorter in A-P direction

Question 7

what may be required to direct occlusal forces to the bearing area when a horizontal arch discrepancy is created

Answer 7

cross-bite

Question 8

-max complete denture opposed by mandibular anterior natural teeth

Answer 8

the combination syndrome

Question 9

-maxillary anterior tissue mobile/hyperplasia
-inflammatory palatal hyperplasia (IPH)
-maxillary tuberosities enlarged
-mand posterior bone resorption
-mandibular anterior teeth supraerupted

Answer 9

combination syndrome

Question 10

combination of curve of spee and the curve of wilson

Answer 10

curve of monson

Question 11

what two planes are curve of monson

Answer 11

coronal and sagittal planes

Question 12

____ for mand
___ for max

Answer 12

concave for mand
convex for max

Question 13

in CR form a segment of a sphere of 4 inch radius with the center of the spehere at the glabella

Answer 13

curve of monson

Question 14

reduce, restore or remove

Answer 14

occlusal plane (to level out)

Question 15

a reciprocal arrangement of elevations and depressions

Answer 15

occlusion

Question 16

single denture fractures:
bitting force of natural dentition is about ___ times that of the denture wearers

Answer 16

5 times

Question 17

going over root or implant

Answer 17

overdenture

Question 18

alveolar resorption.
mand anterior resorbs ___times as fast as max anterior

Answer 18

4 times

Question 19

rapid bone less emphasizes the need for any procedure which will slow the bone loss

Answer 19

preventive prosthodontics

Question 20

retaining mand ____ for overdentures preserved alveolar bone

Answer 20

canines

Question 21

overdenture advantages:
1
2
3
4
5
6

Answer 21

1. denture support is increased and soft tissue trauma is decreased
2. stability of denture is increased
3. maintenance of periodontal propriception improves chewing efficiency
4. psychological benefit to patient
5. residual ridge integrity
6. retention

Question 22

when overdentures?

Answer 22

1. when conventional denture would have poor prognosis
2. when opposing an arch of natural teeth
3. when combination syndrome is a factor

Question 23

disadvantages of overdentures:
1
2
3
4
5
6
7
8

Answer 23

1. likely time dependent transition to CD, depends on patient’s oral hygiene and nature of selective abutments
2. age related and inability to follow proper hygiene
3. presence of refractory periodontal disease
4. caries
5. frequent recall appts
6. available interarch space
7. weakness in arylic denture base
8. cast coping- increases lab procedures/expenses

Question 24

cost more than conventional denture
denture is bulkier in some areas
denture is more subjective to fracture
caries/perio sequelae

Answer 24

disadvantages of overdentures

Question 25

3 things on selection of abutment teeth

Answer 25

1. periodontal and mobility statys (horizontal bone loss) 2. abutment location (canines/premolars) -at least ONE TOOTH PER QUAD, no adjacent teeth 3. endodontic and prosthodontic status: anteriors easy for endo

Question 26

what treatment is recommended for most overdenture abutments

Answer 26

root canals

Question 27

periodontal evaulation. what does not eliminate a tooth for use as an abutment? what ratio is improved (mobility lessened) when crown is reduced on the tooth?

Answer 27

tooth mobility crown/root ratio

Question 28

what teeth are most frequently selected for abutments and why

Answer 28

canines larger roots amenable to RCT strategic location at corners of arch

Question 29

abutment failure

Answer 29

caries or periodontal

Question 30

restorations for abutment

Answer 30

amalgam, cast gold copings

Question 31

surgical guide is required for

Answer 31

implant overdenture

Question 32

implant bars

Answer 32

design for hygiene