Mechanical properties and degree of conversion of etch-and-rinse and self-etch adhesive systems cured by a quartz tungsten halogen lamp and a light-emitting diode

Author(s)

Gaglianone, Livia Aguilera ^[1] ; Lima, Adriano Fonseca ^{[1, 2]} ; Goncalves, Luciano Souza ^[3] ; Cavalcanti, Andrea Nobrega ^[4] ; Baggio Aguiar, Flavio Henrique ^[1] ; Marchi, Giselle Maria ^[1]

Affiliation

^[1] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, BR-13414903 Piracicaba, SP - Brazil

^[2] Nove de Julho Univ, Sch Dent, Dept Restorat Dent, Sao Paulo - Brazil

^[3] Univ Uberaba, Sch Dent, BR-38010200 Uberaba, MG - Brazil

^[4] Sch Med & Publ Hlth Bahia EBMSP, Sch Dent, Dept Oral Rehabil, BR-41150100 Salvador, BA - Brazil

• Document type: Journal article
• Source: JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS; v. 12, p. 139-143, AUG 2012.
• Web of Science Citations: 17

Abstract

The aim of the present study was to evaluate the degree of conversion (DC), elastic modulus (E), and flexural strength (FS) of five adhesive systems (only the bonding component of both Scotchbond MP-SBMP and Clearfil Protect Bond-CP; Single Bond 2-SB2; One-up Bond F Plus-OUP; and P90 System Adhesive: primer-P90P and bond-P90B) cured with a quartz tungsten halogen (QTH) lamp and a light-emitting diode (LED). Two groups per adhesive were formed (n = 5), according to the light source (quartz tungsten halogen - QTH: Demetron LC; and light-emitting diode - LED: UltraLume 5). Bar-shaped specimens were evaluated using three-point bending. The DC was obtained by Fourier transform infrared spectroscopy (FTIR). SB2 and P90P exhibited better DC values for QTH curing. However, SB2 and P90P presented the worst results overall. The light source was statistically significant for all adhesives, except for P90B and OUP. Non-solvated adhesives presented the best E and FS values. It could be concluded that the DC and E values can be influenced by the light source; however, this interference is material dependent. (C) 2012 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 09/15589-4 - Influence of different curing light sources, depthof cure and storage in mechanical properties of different adhesive systems.
• Grantee: Giselle Maria Marchi
• Support Opportunities: Regular Research Grants
• FAPESP's process: 09/03763-0 - Influence of different curing light sources, depth of cure and storage in mechanical properties of different adhesive systems.
• Grantee: Lívia Aguilera Gaglianone
• Support Opportunities: Scholarships in Brazil - Master