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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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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]
Total Authors: 7
[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
Total Affiliations: 4
Document type: Journal article
Source: MICROSCOPY RESEARCH AND TECHNIQUE; v. 77, n. 8, p. 586-593, AUG 2014.
Web of Science Citations: 1

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)

FAPESP's process: 10/19247-8 - In situ analysis of CO2 laser effect on controlling the progression of lesions of erosion and abrasion on dental enamel
Grantee:Taisa Penazzo Lepri
Support type: Scholarships in Brazil - Doctorate