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1.
J Pharm Bioallied Sci ; 7(Suppl 2): S563-6, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-26538918

RESUMEN

The purpose of this in vitro study was to analyze the effectiveness of 2.5% sodium hypochlorite (NaOCl) in preventing inoculation of periapical tissue with contaminated patency files. Fifty single-rooted teeth with single canals were used in the study. They were randomly divided into five groups of which two were experimental groups, two positive controls, and one negative control group. After root canal preparation, teeth in Group I (experimental) were filled with 2.5 NaOCl and #15 stainless steel K-files contaminated with Streptococcus sanguis (ATCC# 10556) were allowed to pass through the root canal into the culture medium and cultured. Teeth in Group II (experimental) were also filled with NaOCl, but contaminated files used in this group were immersed in 2.5% NaOCl for 10 s prior to being placed in the canal. The negative control used sterile files pass through 2.5% NaOCl into the culture medium. The first positive control used contaminated patency files in teeth with saline. The second positive control group placed contaminated files into broth next to teeth filled with NaOCl (to evaluate potential chlorine leakage). The results were as follows. Both the experimental groups and the negative control group showed no growth. Both the positive control groups 100% growth for S. sanguis. This indicates that the NaOCl present in the canal after irrigation was sufficient to kill the test organism.

2.
J Pharm Bioallied Sci ; 7(Suppl 2): S607-11, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-26538928

RESUMEN

INTRODUCTION: The present in vitro study was undertaken to evaluate and compare the sealing ability of hybrid composite, glass ionomer cement type II, silver amalgam and Ketac molar as permanent filling material in root canal treated teeth. METHODOLOGY: Hundred maxillary central incisors were selected for the study. After cleaning all the teeth, root canal treatment was carried out on all of them. The crown portion was cut-off at the cervical level. Three millimeter of coronal Gutta-percha was replaced by four different restorative materials. Then after thermocycling, samples were immersed in dye for 2 weeks. The amount of dye penetration was measured using stereomicroscope. Data were collected and analyzed statistically with ANOVA test and Student-Newman-Keuls test. RESULTS: Coronal leakage was seen in all groups. Composite hybrid showed least amount of microleakage as compared to the other three experimental groups, and Ketac molar showed more leakage compared to other experimental groups. CONCLUSION: This study showed that hybrid composites offer better sealing ability compared to other materials tested in this study.

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