| ORIGINAL ARTICLE |
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| Year : 2016 | Volume
: 34
| Issue : 4 | Page : 324-330 |
A comparative microleakage evaluation of three different base materials in Class I cavity in deciduous molars in sandwich technique using dye penetration and dentin surface interface by scanning electron microscope
Babita Niranjan1, Nandihalli Devendrappa Shashikiran2, Shilpy Singla3, Ruchi Thakur4, Aashutosh Dubey5, Satish Maran1
1 Department of Pedodontics and Preventive Dentistry, Rishiraj College of Dental Sciences, Bhopal, Madhya Pradesh, India
2 Department of Pedodontics and Preventive Dentistry, College of Dental Science, Karad, Maharashtra, India
3 Department of Pedodontics and Preventive Dentistry, People's College of Dental Sciences and Research, Bhopal, Madhya Pradesh, India
4 Department of Pedodontics and Preventive Dentistry, RKDF College of Dental Science, Bhopal, Madhya Pradesh, India
5 Department of Periodontology and Oral Implantology, People's Dental Academy, Bhopal, Madhya Pradesh, India
Correspondence Address:
Babita Niranjan
Department of Pedodontics and Preventive Dentistry, Rishiraj College of Dental Sciences, Bhopal, Madhya Pradesh
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0970-4388.191410
Introduction: A major objective in restorative dentistry is the control of marginal leakage, which may occur because of dimensional changes or lack of adaptation of restorative material to the cavity preparation. Numerous techniques have been advocated to overcome polymerization shrinkage in composite restorations. Aim and Objectives: This study investigated microleakage of three different bases under composite resin in sandwich technique using dye penetration and dentin surface interface using scanning electron microscope (SEM). Materials and Methods: Sixty extracted deciduous molars were stored in distilled water and Class I cavities with a width of about one-fourth of intercuspal distance and a depth of 0.5-1 mm below the dentino-enamel junction was prepared without bevels. In Group 1 - glass ionomer cement (GIC); Group 2 - mineral trioxide aggregate (MTA); Group 3 - Biodentine™ was placed as a base under composite. Teeth were longitudinally sectioned in two halves, through the centers of the restoration, immersed in 2% methylene blue and microleakage was evaluated under stereomicroscope and surface interface between base and dentin was evaluated under SEM. Results:Under the condition of in vitro study, less microleakage and less internal gaps were seen in Biodentine™ (0.00 ± 0.00 and 4.00 ± 1.59) group than MTA (0.00 ± 0.00 and 6.08 ± 1.82) and GIC (25.25 ± 6.57 and 14.73 ± 3.72, respectively) and showed very strong positive correlation between microleakage and internal gaps. Conclusion: Biodentine™ exhibits superior marginal sealing ability as well as marginal adaptation under composite resin as compared to MTA and GIC.
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