Question 283 (part 2) · LDEK · Dental laboratory technology
Indicate true statements regarding initially baked prefabricates of leucite ceramics, lithium disilicate or zircon, in the form of ingots processed in pressing technology:
1) ingots are available in a wide color range of varied stage of transparency and translucency;
2) ingots may be in polychromatic form of varied color gradation;
3) ceramics pressing begins with heating the melting pot in induction furnace;
4) ceramics is pressed after its heating up to the temperature od 1180oC;
5) pressing form for ceramics pressing is made in the cut-back method;
6) one of the methods of preparation of restoration made in pressing technology is layer technique;
7) in this technology following restorations can be fabricated: veneers, crowns, endocrowns, bridges with pontic up to 11mm in lateral section up to first molar.
Correct answer is:
2) ingots may be in polychromatic form of varied color gradation;
3) ceramics pressing begins with heating the melting pot in induction furnace;
4) ceramics is pressed after its heating up to the temperature od 1180oC;
5) pressing form for ceramics pressing is made in the cut-back method;
6) one of the methods of preparation of restoration made in pressing technology is layer technique;
7) in this technology following restorations can be fabricated: veneers, crowns, endocrowns, bridges with pontic up to 11mm in lateral section up to first molar.
Correct answer is:
- A. 1,5.
- B. 2,3
- C. 4,8.
- D. 6,7
- E. 2,7.
Hint
Separate statements about the ingots and finishing techniques from those about the pressing procedure and indications; note that this translation renumbers the list.
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