Question 298 (part 2) · LDEK · Prosthodontic materials
Composite does not fuse so strongly with metal coping as ceramics. Fusion of metal with composite requires special preparation of surface. Mechanical microretention includes:
1) retention pearls;
2) abrasive blasting;
3) electrochemical etching;
4) pitting corrosion;
5) silanization;
6) silicatisation;
7) tinning.
Correct answer is:
2) abrasive blasting;
3) electrochemical etching;
4) pitting corrosion;
5) silanization;
6) silicatisation;
7) tinning.
Correct answer is:
- A. 1,2,3,4.
- B. 1,2,5,6.
- C. 3,4,5,7.
- D. 2,3,4.
- E. all of the above-mentioned.
Hint
Distinguish macroretention, micromechanical surface treatments and chemical or tribochemical bonding methods.
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