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In-depth Polymerization of Dual-cured Resin Cement Assessed by Hardness

2008; SAGE Publishing; Volume: 23; Issue: 1 Linguagem: Inglês

10.1177/0885328207086316

1530-8022

Rogério Vieira Reges, Rafael R. Moraes, Américo Bortolazzo Correr, Mário Alexandre Coelho Sinhoreti, Lourenço Correr‐Sobrinho, Evandro Piva, Paulo Roberto Aranha Nouer,

Photopolymerization techniques and applications

This study investigates the in-depth polymerization of dual-cured resin cement (Enforce; Dentsply, shades A2, B1, and opaque). Cylindrical specimens are obtained by photo-activation through ceramic. Control samples are light-cured without using ceramic. Samples are tested after 15 min or 24 h. Knoop hardness readings are made at 100, 300, 500, and 700 μm depth. Hardness is generally dependent on the mode of activation and post-cure time. Shades A2 and B1 show higher hardness values than opaque resin. Hardness at 100 μm is higher than at 700 μm. A linear relationship between hardness and depth is observed.