Question 101 · LDEK · Prosthodontic materials
The bonding between a metal coping and porcelain in porcelain-fused-to-metal restoration is achieved by:
1) chemical bonding by means of oxide layer;
2) dissociation reaction between metal and porcelain;
3) use of adhesion forces;
4) use of van der Waal’s forces;
5) means of retention with the use of retentive pearls;
6) use of compressive strength;
7) use of special composite adhesives.
The correct answer is:
2) dissociation reaction between metal and porcelain;
3) use of adhesion forces;
4) use of van der Waal’s forces;
5) means of retention with the use of retentive pearls;
6) use of compressive strength;
7) use of special composite adhesives.
The correct answer is:
- A. 1,2,4,5.
- B. 1,3,4,6.
- C. 2,3,5,7.
- D. 1,3,4,7.
- E. 2,3,6,7.
Hint
Separate the genuine mechanisms of porcelain-metal bonding (chemical, adhesive, physical, stress) from those used for resin veneers.
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