Cuspal Flexure and Extent of Cure of a Bulk-fill Flowable Base Composite

Operative Dentistry
A V FrancisAntheunis Versluis

Abstract

To investigate a bulk-fill flowable base composite (Surefil SDR Flow) in terms of cuspal flexure and cure when used in incremental or bulk techniques. Mesio-occluso-distal cavities (4 mm deep, 4 mm wide) were prepared in 24 extracted molars. The slot-shaped cavities were etched, bonded, and restored in 1) two 2-mm increments Esthet-X HD (control), 2) two 2-mm increments Surefil SDR Flow, or 3) 4-mm bulk Surefil SDR Flow (N=8). The teeth were digitized after preparation (baseline) and restoration and were precisely aligned to calculate cuspal flexure. Restored teeth were placed in fuchsin dye for 16 hours to determine occlusal bond integrity from dye penetration. Extent of cure was assessed by hardness at 0.5-mm increments through the restoration depth. Results were analyzed with analysis of variance and Student-Newman-Keuls post hoc tests (α=0.05). Surefil SDR Flow, either incrementally or bulk filled, demonstrated significantly less cuspal flexure than Esthet-X HD. Dye penetration was less than 3% of cavity wall height and was not statistically different among groups. The hardness of Surefil SDR Flow did not change throughout the depth for both incrementally and bulk filled restorations; the hardness of Esthet-X HD was statist...Continue Reading

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Citations

May 31, 2016·Journal of Dentistry·Jan W V van Dijken, Ulla Pallesen
Aug 24, 2017·Brazilian Oral Research·Jose Augusto RodriguesJean-François Roulet
Dec 31, 2019·BioMed Research International·Serdar Akarsu, Sultan Aktuğ Karademir
Dec 5, 2019·Restorative Dentistry & Endodontics·Rodrigo Barros Esteves LinsLuís Roberto Marcondes Martins
Mar 20, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·William M PalinMohammed A Hadis

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