1) Adams Clasp Flashcards Preview

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Flashcards in 1) Adams Clasp Deck (16):
1

What are the elements of a removable appliance?

Active components

Retentive components

Anchorage

Baseplate

2

Describe retention?

Capacity of an appliance to remain fixed in the mouth

Retention needs an undercut

3

Give examples of some retentive appliances?

Adams clasp - posterior teeth

Southend clasp - anterior teeth

Labial bow

4

What are retentive components made of?

Adams clasp - 0.7mm wire (posteriors) may be made with 0.6mm wire (premolars)

Southend clasp - 0.7mm wire (anteriors)

Labial bow - reversed loop - 0.8mm (anteriors)

Baseplate is made from acrylic resin

5

Are these clasps retentive?

No - do not engage in the undercut

6

What are the component parts to a clasp?

A bridge

2 arrow heads

2 flyovers

2 tags

7

What are arrowheads?

Clasp retention comes from the arrowhead engaging into an undercut

8

What is wrong with this clasp?

Bridge too low

9

What is wrong with this clasp?

Bridge too short

10

What is wrong with this clasp?

Bridge too close and arrowheads are too small

11

What is wrong with this clasp?

Arrowheads too low causing tissue trauma

12

What is wrong with this clasp?

Flyover too high - inteferes with the occlusion

13

What is wrong with this clasp?

Distal flyover will interfere with eruption of 2nd molar

14

What is wrong with this clasp?

Not close enough to distal of 1st molar

15

What is wrong with this clasp?

Retention tags too close together

16

Describe the importance of the adams clasp?

Good retention

By far the best design for posterior teeth

Easy to make a poor adams clasp

Important to recognise various faults