Endo materials

Question 1

Calcium hydroxide

Answer 1

antibacterial, alkaline, dissolves necrotic tissue, bacteria + their remnants. Ideal for necrotic, not vital.

Question 2

Odontopaste

Answer 2

clindamycin hydrochloride (5%), triamcinolone acetonide (1%), zinc oxide based.

Question 3

Ledermix

Answer 3

Tetracycline antibiotic (3%), triamcinolone acetonide (1%) anti-inflammatory steroid, causes staining.

Question 4

Sodium hypochlorite

Answer 4

Dissolves vital and necrotic tissue, antimicrobial, lubricating. Free chlorine in NaOCl dissolves necrotic tissue, turns proteins into amino acids.

Question 5

EDTA

Answer 5

(17%) – chelating irrigant, removes smear layer. After shaping, irrigate with 1 min, then final rinse with NaOCl. Reacts with chlorine in NaOCl, don’t leave in canal for long as it can dissolve dentine.

Question 6

GP points

Answer 6

GP- zinc oxide ~60%, GP ~20%

Question 7

AH plus

Answer 7

Epoxy resin, seal space, fill voids, improved version of AH26 and doesn’t release formaldehyde.

Question 8

What shouldn’t you mix calcium hydroxide with?

Answer 8

Calcium hydroxide and triamcinolone should not be mixed 50:50, as steroid component is destroyed immediately by the increased alkalinity and it offers only minimal benefits over the use of calcium hydroxide alone.