| Texto completo | |
| Autor(es): |
Bezerra, S. J. C.
[1]
;
Trevisan, L. R.
[1]
;
Viana, I. E. L.
[1]
;
Lopes, R. M.
[1]
;
Pereira, D. L.
[2]
;
Aranha, A. C. C.
[1, 3]
;
Scaramucci, Tais
[1]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Sch Dent, Dept Restorat Dent, Ave Prof Lineu Prestes 2227, BR-05508000 Sao Paulo, SP - Brazil
[2] IPEN CNEN SP, Inst Energet & Nucl Res, Ave Prof Lineu Prestes 2242, BR-05508000 Sao Paulo, SP - Brazil
[3] Univ Sao Paulo, Sch Dent, Dept Restorat Dent, Special Lab Lasers Dent LELO, Ave Prof Lineu Prestes 2227, BR-05508000 Sao Paulo, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Lasers in Medical Science; v. 34, n. 3, p. 449-455, APR 2019. |
| Citações Web of Science: | 1 |
| Resumo | |
To evaluate the effect of Er,Cr:YSGG laser, associated with fluoride application, on the prevention/control of dentin erosion. Dentin slabs were embedded in acrylic resin, flattened, and polished. Half of the specimens were previously eroded (10min immersion in 1% citric acid solution) and half were kept sound. The specimens (n=10 each substrate) were randomly allocated into the experimental groups, according to the following treatments: control (no treatment); APF gel (1.23% F, 1min); Er,Cr:YSGG laser irradiation (P1: 0.25W, 20Hz, 2.8J/cm(2), tip S75, beam diameter of 750m, 1mm away from the surface); Er,Cr:YSGG laser irradiation (P2: 0.50W, 20Hz, 5.7J/cm(2), tip S75, beam diameter of 750m, 1mm away from the surface); APF gel+Er,Cr:YSGG laser P1 and; APF gel+Er,Cr:YSGG laser P2. Afterwards, the specimens underwent an erosion-remineralization cycling, consisting of a 5-min immersion into 0.3% citric acid, followed by 60-min exposure to artificial saliva. This procedure was repeated 4x/day, for 5days. Surface loss (SL, in m) was determined by optical profilometry. Specimens from each group were analyzed by environmental scanning electron microscopy (n=3). Data were statistically analyzed (=0.05). For the eroded specimens, APF gel presented the lowest SL, being different from the control. For the sound specimens, none of the groups differed from the control, except for Er,Cr:YSGGlaser P2, which presented the highest SL. When substrates were compared, only the eroded specimens of the control and APF + Er,Cr:YSGGlaser P1 Groups showed higher SL. Selective structure removal was observed for the laser-treated groups. None of the Er,Cr:YSGG laser parameters were effective in the prevention/control dentin erosion. Thelaser was also unable to enhance the protection of fluoride against dentin erosion. (AU) | |
| Processo FAPESP: | 16/25883-0 - Efeito do Laser de Er,Cr:YSGG associado a aplicação de um fluoreto no controle da erosão em dentina |
| Beneficiário: | Letícia Rigacci Trevisan |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |