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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

In Situ Analysis of CO2 Laser Irradiation on Controlling Progression of Erosive Lesions on Dental Enamel

Texto completo
Autor(es):
Lepri, Taisa Penazzo [1] ; Scatolin, Renata Siqueira [1] ; Colucci, Vivian [1] ; De Alexandria, Adilis Kalina [2] ; Maia, Lucianne Cople [2] ; Turssi, Cecilia Pedroso [3, 4] ; Milori Corona, Silmara Aparecida [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Sch Dent Ribeirao Preto, Dept Restorat Dent, BR-14040904 Ribeirao Preto, SP - Brazil
[2] Fed Univ Rio de Janeiro UFRJ, Sch Dent, Dept Pediat & Orthodont, BR-21941913 Rio De Janeiro, RJ - Brazil
[3] Sao Leopoldo Mand Inst, Dept Restorat Dent, BR-13045755 Campinas, SP - Brazil
[4] Dent Res Ctr, BR-13045755 Campinas, SP - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: MICROSCOPY RESEARCH AND TECHNIQUE; v. 77, n. 8, p. 586-593, AUG 2014.
Citações Web of Science: 1
Resumo

The present study aimed to evaluate in situ the effect of CO2 laser irradiation to control the progression of enamel erosive lesions. Fifty-six slabs of bovine incisors enamel (5 x 3 x 2.5 mm(3)) were divided in four distinct areas: (1) sound (reference area), (2) initial erosion, (3) treatment (irradiated or nonirradiated with CO2 laser), (4) final erosion (after in situ phase). The initial erosive challenge was performed with 1% citric acid (pH = 2.3), for 5 min, 2x/day, for 2 days. The slabs were divided in two groups according to surface treatment: irradiated with CO2 laser (lambda = 10.6 mu m; 0.5 W) and nonirradiate. After a 2-day lead-in period, 14 volunteers wore an intraoral palatal appliance containing two slabs (irradiated and nonirradiated), in two intraoral phases of 5 days each. Following a cross-over design during the first intraoral phase, half of the volunteers immersed the appliance in 100 mL of citric acid for 5 min, 3x/day, while other half of the volunteers used deionized water (control). The volunteers were crossed over in the second phase. Enamel wear was determined by an optical 3D profilometer. Three-way ANOVA for repeated measures revealed that there was no significant interaction between erosive challenge and CO2 laser irradiation (P = 0.419). Erosive challenge significantly increased enamel wear (P = 0.001), regardless whether or not CO2 laser irradiation was performed. There was no difference in enamel wear between specimens CO2-laser irradiated and non-irradiated (P = 0.513). Under intraoral conditions, CO2 laser irradiation did not control the progression of erosive lesions in enamel caused by citric acid. (C) 2014 Wiley Periodicals, Inc. (AU)

Processo FAPESP: 10/19247-8 - Análise in situ do efeito do laser de CO2 no controle da progressão de lesões de erosão e abrasão no esmalte dental
Beneficiário:Taisa Penazzo Lepri
Modalidade de apoio: Bolsas no Brasil - Doutorado