AI Article Synopsis
- - The study assessed the relationship between the percentage of inorganic filler in 11 flowable resin composites (FRCs) and their mechanical properties, analyzing both weight and volume metrics.
- - It found that the compressive strength (CS), flexural strength (FS), and flexural modulus (FM) values were significantly correlated with the percentage of inorganic filler, with CS ranging from 182.87-310.38 MPa, FS from 59.59-96.95 MPa, and FM from 2.34-6.23 GPa.
- - Scanning Electron Microscopy (SEM) revealed different types of fillers in the composites, but all FS values surpassed the ISO safety limit of 50 MP
Article Abstract
The aim of this study was to evaluate the correlation between the percent of inorganic filler by weight (wt. %) and by volume (vol. %) of 11 flowable resin composites (FRCs) and their mechanical properties. To establish the correlation, the quantity of inorganic filler was determined by combustion and shape/size analyzed by SEM images. The compressive strength (CS), flexural strength (FS), and flexural modulus (FM) were determined. The CS values were between 182.87-310.38 MPa, the FS values ranged between 59.59 and 96.95 MPa, and the FM values were between 2.34 and 6.23 GPa. The percentage of inorganic filler registered values situated between 52.25 and 69.64 wt. % and 35.35 and 53.50 vol. %. There was a very good correlation between CS, FS, and FM vs. the inorganic filler by wt. % and vol. %. (R = 0.8899-0.9483). The highest regression was obtained for the FM values vs. vol. %. SEM images of the tested FRCs showed hybrid inorganic filler for Filtek Supreme XT (A3) and StarFlow (A2) and a homogeneous type of inorganic filler for the other investigated materials. All of the FS values were above 50 MPa, the ISO 4049/2019 limit for FRCs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7142558 | PMC |
| http://dx.doi.org/10.3390/ma13061477 | DOI Listing |
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