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Flashcards in Full Gold Crown Deck (6)
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0

What are the inddications for a FGC?

1) Protection of remaining ccoronal tissue in broken down, heavily filled posterior teethh following root filling, caries, fractures and occlusal wear where a direct amalgam or CR is deemed inappropriate
2) A reatiner for fixed bridgework for protecting or reeshaping a removable partiial denture abutment
3) Splinting periodontally mobile posterior teeth??
4) Elimination of occlusal interferences by re-contouring tilted molars
5) Insufficient interocclusal distance for a PBM or PBZ.

1

What pre-operative considerations should be carried out prior to placing a FGC?

1) Assess need for core
2) Assess need for indirect post retention
3) Periodontal management - electrosurgery to relocate crown margins supragingivally
4) Occluusal adjustments to correctt overerupted opposing teeth
5) ORhtodontics to move tilted bridge abutments to a more favourable alingnment

2

What are the steps and reductions involved with a FGC?

Occlusal reductions:
1.0mm non-functional cusp
1.5mm functional cusp
Buccal reducctionn:
1.0mm midbuccal to a 0.5 chamfer margin
Proximal:
1.0mm at marginal ridge to a 0.5mm chamfer margin
Lingual:
0.8mm in occlusal third to a 0.5mmm chamfer margin

3

If the prep is oovertapered, what can be done for additional rettention?

Pins, slots, prox boxes, 'hot cross bun' occlusal slot

4

What kind of gold alloy is used for FGCs?

Type 3 (60-70% gold)

5

What are the disadvantages with using a FGC?

1) Extensive removal of tooth
2) Not aesthetic
3) Pulp ttesting difficult
4) Iatrogenic damage
5) Galvanic current