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Apical leakage following root canal dressing with calcium hydroxide
Author(s) -
Holland R.,
Alexandre A. C.,
Murata S. S.,
Santos C. A.,
Júnior E. D.
Publication year - 1995
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/j.1600-9657.1995.tb00500.x
Subject(s) - calcium hydroxide , root canal , dentistry , dentin , leakage (economics) , gutta percha , dentinal tubule , materials science , chemistry , medicine , economics , macroeconomics
The purpose of this study was to analyse the apical leakage in teeth filled by the lateral condensation technique following medication with calcium hydroxide. One hundred and twenty extracted human teeth were biomechanically prepared by using exclusively reaming motion with files up to #40. Half of the teeth received a calcium hydroxide dressing for 3 days. The medication was removed by irrigation and reaming motion with files #40 up to #70. The teeth were divided in 6 experimental groups, according to the dimension of the utilized instrument. The root canals were filled and posteriorly the teeth were placed into a 2% methylene blue dye solution inside a flask, which was attached to a vacuum pump. Leakage was measured linearly, and the results showed significantly (p<0.01) less leakage in the experimental groups that received calcium hydroxide dressings than in the control groups. The results persisted even after the removal of 300 of dentin from the root canal dentinal walls.