Effect of high irradiance and short exposure times on the depth of cure of six bulk-fill resin composites.

Autor: Dos Santos DB; Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil., Romano BC; Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil., Pecorari VGA; Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil., Price RB; Faculty of Dentistry, Dalhousie University, Halifax, NS, Canada., Giannini M; Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.
Jazyk: angličtina
Zdroj: European journal of oral sciences [Eur J Oral Sci] 2024 Aug; Vol. 132 (4), pp. e12990. Date of Electronic Publication: 2024 May 02.
DOI: 10.1111/eos.12990
Abstrakt: This study examined the effect of high irradiance and short exposure times on the depth of cure of six resin-based composites (RBCs). Bluephase PowerCure and the Valo X light-curing units (LCUs) were used to photocure bulk-fill RBCs for their recommended exposure times: Admira Fusion x-tra (AFX/20s), Aura Bulk Fill (ABF/20s), Filtek One Bulk Fill (FOB/20s), Opus Bulk Fill APS (OBF/30s), Tetric EvoCeram Bulk Fill (TEC/10s) and Tetric PowerFill (TPF/10s). In addition, all bulk-fill RBCs were tested for depth of cure with one short 3 s exposure time from the Bluephase PowerCure or the Valo X in the Xtra Power mode. The RBCs (n = 10 per RBC) were inserted into a 4 mm diameter metal mold and covered by a polyester strip before being photocured. After 24 h of storage, uncured RBC was scraped away to determine the depth of cure of the RBCs. None of the RBCs achieved a 4 mm depth of cure. The depth of cure of TEC and TPF was unaffected by the exposure times (recommended or short) when using the Valo X. The depth of cure of AFX/20s, AFX/Xtra Power, ABF/Xtra Power, FOB/Xtra Power, and OBF/30s RBCs was greater when using Valo X compared to the Bluephase PowerCure. It was concluded that short exposure times can reduce depth of cure and should only be used for some RBCs.
(© 2024 Scandinavian Division of the International Association for Dental Research. Published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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