“Comparative evaluation of microleakage of composite restorative materials”

Abstract

To evaluate and compare the marginal leakage in class V cavities restored with three different tooth colored restorative materials using dye penetration system. Materials and methods: Thirty extracted premolars were randomly selected for this study. Standardized classV cavities were prepared and then divided into three equal groups. Group I was restored with nano filled composite, Group II was restored with hybrid composite and group III with polyacid modified composite. They were then subjected to thermo cycling, immersed in 2% methylene blue dye, sectioned and examined under stereomicroscope. Dye penetration for each section was recorded and data was analyzed. Results: Lowest micrileakage was recorded in group I and highest leakage recorded in Group III.Conclusion: Nanofilled composite resins provide a better sealing than hybrid and polyacid modified composites. .

Comparative Analysis of Microleakage of Zirconia-infused Glass Ionomer Cement with Miracle Mix and Amalgam: An In Vitro Study

“…After restoration of the cavities, all the teeth were subjected to thermocycling to mimic the oral environment. Dyes can detect leakage where bacteria cannot penetrate [9,11,12]. Methylene blue was used as the dye since it can diffuse easily through the interface and is easily detectable.…”

“…All teeth were bisected buccolingually in a longitudinal path using a diamond disc at slow speed and observed under a stereo microscope (CSM-2, Labomed Inc., CA, USA) at 40X magnification for evidence of dye penetration (Figure 7). The maximum degree of dye penetration was noted for individual specimen, and dye penetration was scored on a nonparametric scale from zero to three based on the Jessudas et al [9]. criteria for microleakage analysis.…”

“…The following scoring criteria were used to evaluate the level of dye penetration at the tooth restoration interface by the criteria described by Jessudas et al [9].…”