Question 46 · LDEK · Prosthodontic materials
Indicate the true statements concerning residual monomer:
1) pathomechanism of the damaging action of residual monomer consists in cell cytoplasm damage;
2) hydroquinone and pyrogalol present in acrylic powder are harmful to the organism;
3) proper powder to acrylic liquid ratio decides whether acrylic resin in denture is harmless;
4) amount and speed of residual monomer release influence the severity of symptoms;
5) residual monomer can trigger an allergic reaction.
The correct answer is:
2) hydroquinone and pyrogalol present in acrylic powder are harmful to the organism;
3) proper powder to acrylic liquid ratio decides whether acrylic resin in denture is harmless;
4) amount and speed of residual monomer release influence the severity of symptoms;
5) residual monomer can trigger an allergic reaction.
The correct answer is:
- A. 1,3.
- B. 2,3,5.
- C. 1,3,4,5.
- D. 3,4,5.
- E. 1,2,3,5.
Hint
Check which component of a two-part acrylic actually contains the polymerisation inhibitors, and how methyl methacrylate damages cells.
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