PMID: 8600013May 1, 1995Paper

Depth of cure of resin-modified glass ionomers

Dental Materials : Official Publication of the Academy of Dental Materials
E J SwiftD Fortin

Abstract

The cure of all resin-modified glass ionomer materials depends to some degree on light activation. However, the materials have chemical-cure mechanisms that could increase depth of cure. Thus, this study was conducted to evaluate the depth of cure of five resin-modified glass ionomer restorative materials. Five specimens of Fuji II LC (GC America), Geristore (Den-Mat), Photac-Fil (ESPE America), VariGlass (Caulk/Dentsply), and Vitremer (3M Dental Products) were fabricated in Teflon molds. Each material was visible light-activated for 40 s. Specimens were 5 mm x 5 mm x 9 mm (depth), but material at depths greater than 5 mm was too soft to measure. Microhardness (KHN) at the surface and at 1 mm increments below the surface of each specimen was measured at 10 min, 1 d, and 7 d after light-curing. At 10 min post-irradiation, the top layers (0-1 mm) of each material were significantly harder than the deeper layers (4-5 mm). However, at 1 d, Geristore, Photac-Fil, Vitremer and Fuji II LC had uniform hardness, regardless of depth. In contrast, VariGlass hardness decreased significantly with depth, from 43.3 at the surface to 11.7 at 5 mm. At 7 d, Photac-Fil, Vitremer and Fuji II LC had more uniform hardness regardless of depth than ei...Continue Reading

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Citations

Apr 11, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·J EllakuriaF García-Godoy
Sep 27, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·Akira MitsuhashiToshio Teranaka
Oct 30, 1998·Journal of Dentistry·W KanchanavasitaG J Pearson
Aug 22, 2001·The Journal of Prosthetic Dentistry·P GateauB Dailey
Aug 20, 2009·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Howard W RobertsDavid G Charlton
Jan 25, 2007·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Steven GuBarry L Musikant
Sep 5, 2006·Dental Materials : Official Publication of the Academy of Dental Materials·Susannah K TomlinsonKenneth E Evans
Nov 10, 2015·International Journal of Paediatric Dentistry·Nihan GonulolEmine Sen Tunc
Mar 6, 2013·Brazilian Oral Research·Juliana de Oliveira FerlaAlessandra Cassoni
Dec 1, 2005·Journal of Applied Oral Science : Revista FOB·Mônica ArataniSimonides Consani
Jul 4, 2007·The Angle Orthodontist·Samir E BisharaJohn J Warren
Jan 16, 2008·The Angle Orthodontist·Samir E BisharaJohn Warren
Dec 4, 2009·Operative Dentistry·Sopanis D ChoJeffrey A Platt
Jul 18, 2002·European Journal of Oral Sciences·Ingrid E Andersson-WenckertPer Hörstedt
Aug 15, 2002·Clinical Oral Implants Research·Ahmed MansourMark Moss
Nov 5, 1999·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·S M Liebmann, P G Jost-Brinkmann

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