Microleakage in Sub-Gingival Class II Preparations Restored Using Two Different Liners for Open Sandwich Technique Supplemented With or Without Ultrasonic Agitation: An In Vitro Study
Introduction: Probability of bond failure at sub-gingival cavosurface margin is high in class II cavity designs especially when margins are located in cementum or dentin. Previous researches have proved ultrasonics to be a beneficial tool in improving the marginal adaptation of the restorative ma...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
JCDR Research and Publications Private Limited
2016-03-01
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| Series: | Journal of Clinical and Diagnostic Research |
| Subjects: | |
| Online Access: | https://jcdr.net/articles/PDF/7479/18120_CE(EK)_F(AK)_PF1(EKAK)_PFA(AK)_PF2(PAG).pdf |
| Summary: | Introduction: Probability of bond failure at sub-gingival cavosurface margin is high in class II cavity designs especially when
margins are located in cementum or dentin. Previous researches
have proved ultrasonics to be a beneficial tool in improving the
marginal adaptation of the restorative material. Therefore, the
effect of ultrasonic activation of the lining material at the gingival
cavosurface margin was tested in the present research.
Aim: The study aimed to evaluate the cervical micro-leakage
in class II preparations with gingival margin located below
cemento enamel junction and restored using open sandwich
technique using two different liners and supplemented with or
without ultrasonic agitation.
Materials and Methods: Forty recently extracted human molars
were collected, disinfected and stored in 0.9% saline solution.
Standar dized class II cavities were prepared with gingival margin
located 1mm below the cemento-enamel junction. Teeth were
randomly divided into four groups (n=10) and restored using
open sandwich technique as follows - Group A: Resin Modified
Glass Ionomer Cement as liner and Beautifil II as coronal
restoration; Group B: Same as group A supplemented with
ultrasonic agitation; Group C: Beautifil Flow Plus as liner and
Beautifil II as coronal restoration; Group D: Same as Group C
supplemented with ultrasonic agitation. Prepared samples were
subjected to thermo cycling, followed by immersing in 0.5%
methylene blue dye solution. After 24 hours they were cleaned
and sectioned in mesio-distal direction using diamond disc and
evaluated for microleakage. Obtained scores were statistically
analysed using one way ANOVA test and Post Hoc test.
Results: Group B showed least microleakage amongst all
groups but the results were statistically insignificant (p value
> 0.05).
Conclusion: Marginal adaptation of liner with ultrasonic
activation was somewhat better however, the results were
statistically insignificant. |
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| ISSN: | 2249-782X 0973-709X |