Effect of Volume and Renewal of the Storage Media on the Release of Monomer from Dental Composites.

Sima Shahabi,Sara Valizadeh,Maryam Sayyari,Alireza Sadr,Sima Sadrai,Hamidreza Hajizamani,Boonlert Kukiattrakoon

doi:10.1155/2021/9769947

Sima Shahabi, Sara Valizadeh + Show 5 more

Open Access

https://doi.org/10.1155/2021/9769947

Copy DOI

Abstract

This study evaluated the effect of the volume and renewing of storage media on monomer leachability from dental composite. Samples of two dental composites (BEAUTIFIL II Gingiva (BG) and Filtek Bulk-Fill Flowable (FBF)) were stored after polymerization in 1 and 3 milt storage media (ethanol/water 75%) for seven days. Refreshing of storage media was done in half of the samples of each group. The amounts of releasing monomers (UDMA, BisGMA, TEGDMA) in storage media were measured by high-performance liquid chromatography (HPLC). Data was analyzed using two-way ANOVA and t-test (α = 0.05). Elution of TEGDMA and UDMA from both composites was significantly higher in 3 mL storage media. In groups with refreshing of storage media, BisGMA had higher amounts of release. Saturation makes the storage media volume important factor in monomer elution. Refreshing of storage media had significant effect on monomer release before the elution of 50% of total released monomer.

Highlights

Considering the ever-increasing popularity of composites, there are concerns about the release of composite compounds and their toxicity
There is a probability that resin materials would release substances such as unpolymerized monomers, additives, and filler component when placed in the oral cavity [1]
With a short curing time and the temperature of 37°C, composites will not be fully polymerized, due to the crosslinking reactions that can considerably reduce the movements of the monomers. e degradation process occurring in the oral cavity can increase the release of certain substances from resin materials, as mechanical, enzymal, and hydraulic processes can break the polymeric chains and release the products of this breakage as monomer or polymer molecules [1, 2]

Summary

Research Article

Sima Shahabi ,1,2 Maryam Sayyari ,3 Sima Sadrai ,4 Sara Valizadeh ,5,6 Hamidreza Hajizamani ,7 and Alireza Sadr 8. Is study evaluated the effect of the volume and renewing of storage media on monomer leachability from dental composite. Samples of two dental composites (BEAUTIFIL II Gingiva (BG) and Filtek Bulk-Fill Flowable (FBF)) were stored after polymerization in 1 and 3 milt storage media (ethanol/water 75%) for seven days. Refreshing of storage media was done in half of the samples of each group. E amounts of releasing monomers (UDMA, BisGMA, TEGDMA) in storage media were measured by high-performance liquid chromatography (HPLC). Elution of TEGDMA and UDMA from both composites was significantly higher in 3 mL storage media. In groups with refreshing of storage media, BisGMA had higher amounts of release. Saturation makes the storage media volume important factor in monomer elution. Refreshing of storage media had significant effect on monomer release before the elution of 50% of total released monomer

Introduction

Materials and Methods

Not Refreshing

Discussion

Findings

Mean Sd