The effect of CO2 laser irradiation plus fluoride dentifrice on the inhibition of secondary caries on root surfaces adjacent to glass ionomer cement or composite resin restorations

Author(s)

Rodrigues, S. R. ^[1] ; Moraes, M. ^[1] ; Hanashiro, F. S. ^[2] ; Youssef, M. N. ^{[2, 1]} ; Brugnera Junior, A. ^[3] ; Nobre-dos-Santos, M. ^[4] ; de Souza-Zaroni, W. C. ^[1]

Affiliation

^[1] Cruzeiro Univ UNICSUL, Sch Dent, Av Dr Ussiel Cirilo 225, BR-08060070 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Sch Dent, Dept Restorat Dent, Av Prof Lineu Prestes 2227, Cidade Univ, BR-05508900 Sao Paulo, SP - Brazil

^[3] Brugnera Zanin Inst, Rua Groenlandia 183, BR-01434000 Sao Paulo - Brazil

^[4] State Univ Campinas UNICAMP, Fac Dent Piracicaba, Dept Pediat Dent, Av Limeira, 901 Box 52, BR-13414903 Piracicaba, SP - Brazil

• Document type: Journal article
• Source: Laser Physics; v. 26, n. 2 FEB 2016.
• Web of Science Citations: 1

Abstract

Although the cariostatic effects of CO2 laser on the root surface have been shown, there is scarce information regarding its effects on root secondary caries. The objective of this research was to investigate the effect of the association of CO2 laser and a fluoride dentifrice on the inhibition of secondary caries on root surfaces adjacent to composite-resin or glass-ionomercement restorations. Dental blocks of human roots were divided into two groups: composite resin (CR) or glass ionomer cement (GIC), Subsequently, the blocks were divided into four subgroups (n = 10): C, non-fluoride dentifrice; FD, fluoride dentifrice; L, CO2 laser with an energy density of 6,0 J cm(-2) + non-fluoride dentifrice; and L FD, CO2 laser H- fluoride dentifrice, The blocks were subjected to p11 cycling to simulate a high cariogcnic challenge. Dental demineralization around the restorations was quantified by microhardness analysis. The results were subjected to analysis of variance (ANOVA) and the Tukey Kramer test (p <= 0.05). As for mineral loss, it can be observed that all the groups that were treated with a fluoride dentifrice and laser, used alone or not, were statistically similar and superior to the RC C group. It was concluded that CO2 laser irradiation and a fluoride dentifrice used alone or combined with each other are efficient surface treatments for preventing secondary root caries, regardless of the restorative material used, (AU)

• FAPESP's process: 10/01863-4 - Effect of CO2 laser, associated or not to fluoride, on root caries prevention - in vitro and in situ studies
• Grantee: Wanessa Christine de Souza Zaroni
• Support type: Regular Research Grants