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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.)

Effect of sodium fluoride and stannous chloride associated with Nd:YAG laser irradiation on the progression of enamel erosion

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Joao-Souza, Samira Helena [1] ; Cardoso Bezerra, Savio Jose [2] ; Borges, Alessandra Buehler [3] ; Aranha, Ana Cecilia [1] ; Scaramucci, Tais [2]
Total Authors: 5
[1] Univ Sao Paulo, Dept Restorat Dent, Sch Dent, Special Lab Lasers LELO, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Dept Restorat Dent, Sch Dent, BR-05508000 Sao Paulo, SP - Brazil
[3] Univ Estadual Paulista, Dept Restorat Dent, BR-12245000 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Lasers in Medical Science; v. 30, n. 9, p. 2227-2232, DEC 2015.
Web of Science Citations: 5

This study evaluated the progression of enamel erosion after treatment with gels containing sodium fluoride (NaF; 9047 ppm F) and stannous chloride (SnCl2; 3000 ppm Sn), associated or not with Nd:YAG laser irradiation. Sixty enamel specimens were prepared from bovine incisors and protected by a tape, leaving an exposed surface area of 4 x 1 mm. The specimens were immersed in 1 % citric acid (pH = 2.3) for 10 min to create an initial erosion lesion. After, they were randomly divided into six groups: (C) control: gel without active ingredient; (F): NaF gel; (F + Sn): NaF + SnCl2 gel; (laser): Nd:YAG laser irradiation (0.5 W; 50 mJ; similar to 41.66 J/cm(2); 10 Hz; 40 s); (F + laser): NaF gel + Nd:YAG; (F + Sn + laser): NaF + SnCl2 gel + Nd:YAG. All gels had pH = 4.5 and were applied for 1 min. Laser irradiation was performed after gel application. The specimens were then submitted to a 5-day erosion-remineralization cycling model using 1 % citric acid (pH = 2.3), six times per day. Enamel surface loss (SL) was analyzed by optical profilometry in the end of the cycling (in mu m). Data were analyzed by one-way ANOVA and Holm-Sidak tests (alpha = 0.05). The control and the laser groups presented the highest enamel loss (means +/- SD = 53.52 +/- 3.65 and 53.30 +/- 2.73, respectively), followed by F + Sn (44.76 +/- 2.83). The groups F (36.76 +/- 2.28), F + laser (36.25 +/- 3.59), and F + Sn + laser (39.83 +/- 4.62) showed the lowest enamel loss, with no significant difference among them (p > 0.05). In conclusion, NaF by itself or associated with SnCl2 and Nd:YAG laser was able to reduce enamel erosion progression. Nd:YAG laser alone did not show a protective effect. (AU)

FAPESP's process: 12/20632-9 - Analysis of the progression of erosion lesions after Nd:YAG irradiation
Grantee:Samira Helena João de Souza
Support type: Scholarships in Brazil - Master
FAPESP's process: 14/14055-4 - In situ evaluation of the anti-erosive effect of solutions containing sodium fluoride, stannous chloride and linear chain sodium polyphosphate
Grantee:Taís Scaramucci Forlin
Support type: Regular Research Grants
FAPESP's process: 11/17699-1 - Progression of dental erosion after Nd:YAG laser irradiation
Grantee:Ana Cecília Corrêa Aranha
Support type: Regular Research Grants