Comparision of Microleakage Between Conventional GlassIonomer, Light Cured Glass-Ionomer, Cermet And Mineral Trioxide Aggregate (White) Used As A Coronal Barrier in Nonvital Bleaching – An in Vitro Study
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 10
Abstract
Freshly extracted 80 intact, non-carious single rooted human maxillary central incisors that were extracted for periodontal reasons within six months period of start of the study were collected from the Department of Oral and Maxillofacial Surgery. The root canals were instrumented using a step-back technique. Obturation was done with cold lateral compaction method using Gutta-Percha. Peeso reamer no 4 was used to remove the Gutta-Percha upto 3mm below the CEJ. The teeth were randomly allocated into four groups with twenty teeth in each group as follows: GroupA :- Conventional glass ionomer cement. GroupB :- Light cured glass ionomer cement. GroupC :- Glass cermet. GroupD :- White mineral trioxide aggregate. The teeth were stored for 3 days. Then Cavit G and cotton pellets were removed and replaced with new cotton pellets wetted with fresh bleaching agents. This process was repeated three times. Then pulp chamber was rinsed with distilled water and dried. Two layers of nail varnish was applied over the tooth surfaces except for access cavity margins and then immersed in 1%methylene blue dye for 72 hrs. The teeth were then washed and split longitudinally with a diamond disc using a water coolant. The depth of dye penetration was examined under a stereomicroscope (20X) to evaluate the roots for the extent of coronal microleakage. The results were then analysed statistically using one way ANOVA and Post HOC Tukey’s test. Comparison of coronal dye microleakage showed mean coronal dye microleakage values of 2.61mm with a standard deviation of 0.06 for conventional glass ionomer cement, 1.79 mm with a standard deviation of 0.09 for light cure glass ionomer cement, 3.44mm with a standard deviation of 0.24 for glass cermet and 1.28 mm with a standard deviation of 0.41 for mineral trioxide aggregate (white). The marginal adaptation in terms of coronal dye microleakage can be summarized as: White mineral trioxide aggregate > light cure glass ionomer cement > conventional glass ionomer cement > glass cermet
Authors and Affiliations
Dr. Nidha Amrin . M, Dr. M. Kala, Dr. Savitha B. Naik
Keywords
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- EP ID EP239179
- DOI 10.9790/0853-1610015662
- Views 113
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