Apical leakage following root canal dressing with calcium hydroxide.
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Data
1995-12-01
Autores
Holland, Roberto [UNESP]
Alexandre, A. C.
Murata, S. S.
dos Santos, C. A.
Dezan Júnior, Eloi [UNESP]
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Resumo
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 micrometers of dentin from the root canal dentinal walls.
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Palavras-chave
biomedical and dental materials, calcium hydroxide, zinc oxide eugenol, analysis of variance, endodontics, human, instrumentation, methodology, tooth disease, Analysis of Variance, Calcium Hydroxide, Dental Leakage, Humans, Root Canal Irrigants, Root Canal Obturation, Root Canal Preparation, Zinc Oxide-Eugenol Cement
Como citar
Endodontics & dental traumatology, v. 11, n. 6, p. 261-263, 1995.