Question 28 (part 2) · LDEK · Root canal obturation
Choose correct statements regarding the features of gutta-percha cones:
1) they are characterized by high plasticity, which facilitates their condensation, easiness of insertion and removal from the canal;
2) they are tissue-consistent, same as pure gutta-percha;
3) the more developed the apical surface connected with periodontium (which means with more sulcuses, grooves and fissures) is, the higher the cytotoxicity;
4) activGP (EndoSequence) is used in the form of single cone in combination with glass-ionomer sealer;
5) Greater Taper (with convergence degree of <2%) are meant for obturating the roots prepared with rotary nickel-titanium instruments of greater taper.
Correct answer is:
2) they are tissue-consistent, same as pure gutta-percha;
3) the more developed the apical surface connected with periodontium (which means with more sulcuses, grooves and fissures) is, the higher the cytotoxicity;
4) activGP (EndoSequence) is used in the form of single cone in combination with glass-ionomer sealer;
5) Greater Taper (with convergence degree of <2%) are meant for obturating the roots prepared with rotary nickel-titanium instruments of greater taper.
Correct answer is:
- A. 1,2.
- B. 1,2,3.
- C. 4,5.
- D. 1,2,5.
- E. all of the above mentioned.
Hint
Think about what gutta-percha cones are mostly made of, how tapered 'greater taper' points are, and which sealer Activ GP is paired with.
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