Influence of calcium hydroxide debris on the quality of endodontic apical seal.
OBJECTIVE
The aim of the study was to study investigate the influence of calcium hydroxide used as intermediate medication on the quality of apical seal of a silicon based and an experimental resin based endodontic sealer.


METHODS
Eighty endodontic canals were prepared and divided in four groups. Calcium hydroxide was applied in groups 2 and 4. After 7 days, medication was removed and canals were filled with gutta-percha and RoekoSeal Automix (groups 1 and 2) or Scotchbond MP+C&B cement B (groups 3 and 4). Specimens were placed into India ink, cleared and analyzed under a stereomicroscope to investigate apical leakage.


RESULTS
Specimens that received calcium hydroxide medication showed leakage means higher than the corresponding untreated ones (i.e. group 1< group 2 and group 3< group 4; P<0.001).


CONCLUSIONS
Calcium hydroxide interferes with the sealing ability of silicon based sealer, since it frequently remains entrapped within the endodontic space even after careful removal procedures.
Contardo
L
L
Clinic University Department of Biomedicine, University of Trieste, Trieste, Italy.
De Luca
M
M
Bevilacqua
L
L
Breschi
L
L
Di Lenarda
R
R
D002126:Calcium Hydroxide / Q000494:pharmacology*; D006801:Humans; D012387:Root Canal Filling Materials
D012387:Root Canal Filling Materials; D002126:Calcium Hydroxide