In-depth polymerization of dual-cured resin cement assessed by hardness.
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 microm 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 microm is higher than at 700 microm. A linear relationship between hardness and depth is observed.
Reges
Rogério V
RV
Department of Restorative Dentistry, Dental Materials Division Piracicaba Dental School, State University of Campinas Av. Limeira, 901 - 13414-903 - Piracicaba, SP, Brazil.
Moraes
Rafael R
RR
Correr
Américo B
AB
Sinhoreti
Mário A C
MA
Correr-Sobrinho
Lourenço
L
Piva
Evandro
E
Nouer
Paulo R A
PR
D003116:Color; D006244:Hardness; D008422:Materials Testing; D010777:Photochemistry; D011108:Polymers / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*
C103503:EnForce-Sure Cure; D011108:Polymers; D019279:Resin Cements; C035124:CMW cement; D019904:Polymethyl Methacrylate