Polymerization shrinkage of light-cured conventional and bulk-fill composites - the effect of cavity depth and post-curing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00064165%3A_____%2F23%3A10451544" target="_blank" >RIV/00064165:_____/23:10451544 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11110/23:10451544

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=vjPhc5qvM_" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=vjPhc5qvM_</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4012/dmj.2022-210" target="_blank" >10.4012/dmj.2022-210</a>

Result language

angličtina

Original language name

Polymerization shrinkage of light-cured conventional and bulk-fill composites - the effect of cavity depth and post-curing

Original language description

Volumetric shrinkage (VS) of conventional, bulk-fill, and core build-up resin-based composites (RBCs) of various thickness (1-5mm) was measured using the modified bonded-disk method with confocal laser scanning microscopy. Additionally, the bottom-to-top ratio of Vickers hardness (%VH) was measured. Conventional RBCs exhibited significantly higher VS than bulk-fill and core build-up RBCs (p&lt;0.05). As specimen thickness increased, VS relative to volume (%VS) and difference in VS at each depth (VSdepth) decreased. For conventional RBCs, there was a significant drop in VSdepth between 1mm and 2mm (p&lt;0.05), and another drop was observed between 3mm and 4mm (p&lt;0.05) where %VH decreased below 90%. For bulk-fill and core build-up RBCs, VSdepth decreased significantly between 2mm and 3mm (p&lt;0.05), but %VH exceeded 90% even in 5mm deep cavities. These results indicated that post-curing contributed to lower shrinkage in deeper layers, and that conventional RBCs were not adequately polymerized at the depth of over 3mm.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30208 - Dentistry, oral surgery and medicine

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Dental Materials Journal

ISSN

0287-4547

e-ISSN

1881-1361

Volume of the periodical

42

Issue of the periodical within the volume

3

Country of publishing house

JP - JAPAN

Number of pages

7

Pages from-to

426-432

UT code for WoS article

001081896700016

EID of the result in the Scopus database

2-s2.0-85160966535