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VOLUME 20 , ISSUE 7 ( July, 2019 ) > List of Articles

ORIGINAL RESEARCH

Assessment of Microleakage Using Dye Penetration Method in Primary Teeth Restored with Tooth-colored Materials: An In Vitro Study

Sameer Punathil, Sultan A Almalki, Inderjit M Gowdar, Vijay Amarnath MC, Krishnarao Chinnari

Keywords : Class II cavity preparation, Microleakage, Primary molars, Thermocycling

Citation Information : Punathil S, Almalki SA, Gowdar IM, MC VA, Chinnari K. Assessment of Microleakage Using Dye Penetration Method in Primary Teeth Restored with Tooth-colored Materials: An In Vitro Study. J Contemp Dent Pract 2019; 20 (7):778-782.

DOI: 10.5005/jp-journals-10024-2596

License: CC BY-NC 4.0

Published Online: 01-08-2019

Copyright Statement:  Copyright © 2019; The Author(s).


Abstract

Aim: The present study aimed to assess the microleakage in primary teeth restored with tooth-colored materials using the dye penetration method. Materials and methods: A total of 60 healthy primary molar teeth were included in this study and standardized class II mesio-occlusal cavities were prepared on the samples. Consequently, these teeth were randomly divided into three experimental groups (n = 20 each group) such as group I: nano-filled resin-modified glass-ionomer, group II: nanocomposite resin, and group III: Cention N. After completing all the restorations, the restored teeth were subjected to 100 cycles of thermocycling. Next, all the surfaces of the tooth, except the restoration and a 1-mm zone adjacent to the restoration's margins, were covered with two coats of nail varnish. The coated teeth were then submerged in a 0.5% basic fuchsin dye solution. The teeth were then sectioned along the center of each restoration mesiodistally. Each part was visualized under a stereomicroscope at ×40 magnifications to assess microleakage. Results: Out of all the included restorative materials, the least microleakage was demonstrated by teeth restored by the nano-filled resin-modified glass-ionomer (RMGI) group (1.05 ± 0.21) followed by the Cention N group (1.84 ± 0.14) and the nanocomposite resin group (3.10 ± 0.03). A statistical method involving the analysis of variance revealed a statistically significant difference among the different restorative materials. Multiple comparisons among the restorative materials showed a statistically significant difference between groups I and II and groups II and III restorative materials (p < 0.05). The dye penetration score 1 was more [11(55%)] for the nano-filled RMGI group, score 3 was more [12(60%)] for the nanocomposite resin group, and score 2 was more [9(45%)] for the Cention N group. Conclusion: The present study showed significantly less microleakage associated with the nano-filled resin-modified glass ionomer group than nanocomposite resin and Cention N groups. Clinical significance: Since many years, dentists have encountered a challenging problem with cervical lesions. Thus, an interdisciplinary treatment approach is the appropriate option in the management of carious teeth that involve gingival recession and cervical extension.

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