RPD intro

Question 1

RPD is

vs bridge

Answer 1

Removable appliance which replaces 1+ but not an entire arch

Bridges are fixed (fixed partial dentures)

Question 2

classification of denture

Answer 2

1) support
- mucosa
- tooth
- both
2) tooth loss
- kennedy
3) material type

Question 3

mucosal denture

Answer 3

• primarily acrylic PMMA
• metal components may be used for strength or clasping
• cheap
• can be modified and added to (can plan ahead depending on tooth prognosis)
• useful as transitional denture

Question 4

tooth borne denture

Answer 4

Metal framework
Load is through natural teeth

• cobalt chrome
• titanium
• gold alloys
  teeth are attached with acrylic PMMA or pink composite

Question 5

support of tooth borne gained from

Answer 5

occlusal cingulum or incisal rests

• to be purely tooth borne must be bounded saddles
• complex, time consuming, expensive and therefore OH needs to be good
• cannot be modified (ideally)

Question 6

tooth and mucosa borne

Answer 6

• metal framework
• no distal supporting tooth
• acrylic fitting surface provides support in saddle area

support from rests and mucosa

Question 7

requriements of RPD

Answer 7

• aesthetics
• mastication
• comfort
• distribute occlusal forces to appropriate structures (through long axis of tooth)
• retentive
• space maintenance
• OVD maintenance

Question 8

advantages of RPDs

Answer 8

• aesthetics
• functions (speech/mastication- consider shortened dental arch)
• prevention of tooth movement (drifting and overeruption)
• maintenance of OVD

Question 9

dis of RPDs

Answer 9

• tooth loss greater than when a RPD provided rather than other methods of replacement
• increases plaque accumulation
• caries gingivirus periodontal
• tooth movement
  some can be design dependant
• damage to tooth tissue
• forces on teeth may impact supporting structures
• wuality of RPD may impact

Question 10

kennedy class 1

Answer 10

bilateral edentulous area located posterior to natural teeth

mod for each additioonal saddle area
eg mod 2 for 2 additioanl saddle aras

Question 11

kennedy class 2

Answer 11

unilateral edentulous area located posterior to natural teeth

Question 12

kennedy class 3

Answer 12

unilateral edentulous area with natural teeth remaining anterior and posterior to its

Question 13

kennedy class 4

Answer 13

single bilateral edentulous area anterior to the remaining natural teeth (no modifcations!!!!!)