Par 2 - Implants & RPDs

Question 1

Recommend __ abutment teeth per quadrant.

Answer 1

2

Can be canine, premolars, or molars.

Question 2

What are poor abutment tooth choices?

Answer 2

1. incisors
2. centrals
3. lone standing premolars

Question 3

What are the problems with canine supported RPDs?

Answer 3

1. no broad stress distribution
2. no indirect retainers
3. predominantly tissue supported

Question 4

What is Kelly (combination) syndrome?

Answer 4

Characteristic features :

• Bone loss in the anterior maxilla
• Overgrowth of maxillary tuberosities
• Papillary hyperplasia of the hard palate
• Supraeruption of the mandibular anterior teeth
• Bone loss underneath the distal extensions of the mandibular RPD

Question 5

Acrylic thickness: __ mm

Answer 5

2-3mm

Question 6

Rests provide ___.

Answer 6

Support

Question 7

What elements of the clasp assembly provides stability?

Answer 7

reciprocal element, minor connector, shoulder of the clasp

Question 8

The clasp assembly must be designed to contact the abutment tooth at least ____ degrees to prevent lateral movement away from the abutment tooth in any direction. Contact can be continuous or discontinuous.

Answer 8

180 degrees

Question 9

What is the clasp assembly of choice for DE RPDs?

Answer 9

RPI

Question 10

T/F? Indirect retainer(s) must be positioned as far anterior to the fulcrum line as possible.

Answer 10

TRUE.

Question 11

Order of RPD tx?

Answer 11

1. diagnosis
2. surveying
3. design
4. preparation
5. impression
6. framework
7. fitting the framework
8. cast alteration
9. interocclusal records
10. trial denture
11. delivery & maintenence

Question 12

What are the 3 things you need on your master cast?

Answer 12

1. tripod marks
2. height of contour
3. location of undercuts