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Comparative evaluation of microleakage in Class II restorations using open vs. closed centripetal build-up techniques
Shefali Sawani1, Vipin Arora1, Shikha Jaiswal1
1Department of Conservative Dentistry and Endodontics, Subharti Dental College, Meerut, Uttar Pradesh, India.
Background:
Evaluation of microleakage is important for assessing the success of new restorative materials and methods.
Aim And Objectives:
Comparative evaluation of microleakage in Class II restorations using open vs. closed centripetal build-up techniques with different lining materials.
Materials And Methods:
Standardized mesi-occlusal (MO) and distoocclusal (DO) Class II tooth preparations were preparedon 53 molars and samples were randomly divided into six experimental groups and one control group for restorations. Group 1: Open-Sandwich technique (OST) with flowable composite at the gingival seat. Group 2: OST with resin-modified glass ionomer cement (RMGIC) at the gingival seat. Group 3: Closed-Sandwich technique (CST) with flowable composite at the pulpal floor and axial wall. Group 4: CST with RMGIC at the pulpal floor and axial wall. Group 5: OST with flowable composite at the pulpal floor, axial wall, and gingival seat. Group 6: OST with RMGIC at the pulpal floor, axial wall, and gingival seat. Group 7: Control - no lining material, centripetal technique only. After restorations and thermocycling, apices were sealed and samples were immersed in 0.5% basic fuchsin dye. Sectioning was followed by stereomicroscopic evaluation.
Results:
Results were analyzed using Post Hoc Bonferroni test (statistics is not a form of tabulation). Cervical scores of control were more than the exprimental groups (P < 0.05). Less microleakage was observed in CST than OST in all experimental groups (P < 0.05). However, insignificant differences were observed among occlusal scores of different groups (P > 0.05).
Conclusion:
Class II composite restorations with centripetal build-up alone or when placed with CST reduces the cervical microleakage when compared to OST.
