Research Article
Volume 19 Issue 7 - 2020
The Impact of Insert Application on the Cuspal Deflection and Microleakage in Mesio-Occluso-Distal (MOD) Cavities of Maxillary Premolars Restored with Resin Composite
Ahmed Magdy Sayed*
Lecturer of Dental Biomaterials, Faculty of Dentistry, Modern University for Technology and Information, Egypt
*Corresponding Author: Ahmed Magdy Sayed, Lecturer of Dental Biomaterials, Faculty of Dentistry, Modern University for Technology and Information, Egypt.
Received: April 11, 2020; Published: June 19, 2020




Abstract

Objective: This study was conducted to investigate the efficacy of insert application on the cuspal deflection and microleakage of maxillary bicuspids restored with resin composite restoration.

Methods: Sixty sound upper human premolars were selected and divided equally into two groups for cuspal deflection measurement and microleakage assessment. Standardized mesio-occluso-distal (MOD) cavities were prepared. Each group was subdivided according to the type of insert used into equally three subgroups (n = 10); the first group (A0), no insert was applied (resin composite only) (3M Filtek TM Z250 XT), while in the second group (A1); partially polymerized glass fiber post insert (everstick post) was used, while in the third group (A2); fully polymerized glass fiber post insert (rely X TM fiber post) was applied.

Cuspal deflection measured at 5 minutes, 60 minutes and after thermocycling and cyclic loading, using universal measuring microscope at 5 x magnification. The microleakage assessed gingivally and occlusally after thermocycling and cyclic loading. Cavities were restored and the inserts were applied between the composite increments. The results were recorded, tabulated and statistically analyzed.

Results: The insert application in resin composite restoration produced a statistically significant decrease in cuspal deflection and microleakage both gingivally and occlusally.

Conclusion: The problem of cuspal deflection and microleakage in complex cavities prepared in premolars can be greatly controlled by utilizing inserts.

Keywords: Resin Composite; Inserts; MOD Cavities; Occlusal Loading; Cuspal Deflection; Microleakage

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Citation: Ahmed Magdy Sayed. “The Impact of Insert Application on the Cuspal Deflection and Microleakage in Mesio-Occluso-Distal (MOD) Cavities of Maxillary Premolars Restored with Resin Composite”. EC Dental Science 19.7 (2020): 61-70.

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