| Literature DB >> 11870956 |
Mario Roberto Leonardo1, Frank Ferreira Silveira, Léa Assed Bezerra da Silva, Mário Tanomaru Filho, Lidia Sabbag Utrilla.
Abstract
The objective of this study was to evaluate periapical and apical repair using calcium hydroxide root canal dressings for different lengths of times in teeth with induced chronic periapical lesions. A total of 61 root canals of maxillary and mandibular premolars from 4 dogs were used. After mechanical preparation of the root canals using the crown-down technique, and 5.25% NaOCl as irrigating solution, the apical foramen was enlarged in all cases. A calcium hydroxide root canal dressing was applied. The control group did not receive a root canal dressing. The animals were killed at 7, 15 or 30 days. After histological preparation, serial sections were stained with hematoxylin-eosin and Mallory's trichrome. The best histopathological results occurred at 15 and 30 days, and the worst results occurred at 7 days and in the control group.Entities:
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Year: 2002 PMID： 11870956
Source DB: PubMed Journal: Braz Dent J ISSN： 0103-6440