Dental composites - a low-dose source of bisphenol A?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F20%3A10416138" target="_blank" >RIV/00216208:11110/20:10416138 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22330/20:43920414 RIV/00023761:_____/20:N0000034 RIV/00064165:_____/20:10416138
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=LTGuKoc8eI" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=LTGuKoc8eI</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.33549/physiolres.934518" target="_blank" >10.33549/physiolres.934518</a>
Alternative languages
Result language
angličtina
Original language name
Dental composites - a low-dose source of bisphenol A?
Original language description
Dental composite materials often contain monomers with bisphenol A (BPA) structure in their molecules, e.g. bisphenol-A glycidyl dimethacrylate (Bis-GMA). In this study, it was examined whether dental restorative composites could be a low-dose source of BPA or alternative bisphenols, which are known to have endocrine-disrupting effects. Bis-GMA-containing composites Charisma Classic (CC) and Filtek Ultimate Universal Restorative (FU) and "BPA-free" Charisma Diamond (CD) and Admira Fusion (AF) were examined. Specimens (diameter 6 mm, height 2 mm, n=5) were light-cured from one side for 20 s and stored at 37 °C in methanol which was periodically changed over 130 days to determine the kinetics of BPA release. BPA concentrations were measured using a dansyl chloride derivatization method with liquid chromatography - tandem mass spectrometry detection. The amounts of BPA were expressed in nanograms per gram of composite (ng/g). BPA release from Bis-GMA-containing CC and FU was significantly higher compared to "BPA-free" CD and AF. The highest 1-day release was detected with FU (15.4+-0.8 ng/g), followed by CC (9.1+-1.1 ng/g), AF (2.1+-1.3 ng/g), and CD (1.6+-0.8 ng/g), and the release gradually decreased over the examined period. Detected values were several orders of magnitude below the tolerable daily intake (4 µg/kg body weight/day). Alternative bisphenols were not detected. BPA was released even from "BPA-free" composites, although in significantly lower amounts than from Bis-GMA-containing composites. Despite incubation in methanol, detected amounts of BPA were substantially lower than current limits suggesting that dental composites should not pose a health risk if adequately polymerized.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30208 - Dentistry, oral surgery and medicine
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physiological Research
ISSN
0862-8408
e-ISSN
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Volume of the periodical
69
Issue of the periodical within the volume
Suppl. 2
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
10
Pages from-to
"S295"-"S304"
UT code for WoS article
000581646000013
EID of the result in the Scopus database
2-s2.0-85094621341