| Full text | |
| Author(s): |
Silva Soares, Luis Eduardo
[1]
;
Magalhaes, Juarez da Silva
[1]
;
Marciano, Fernanda Roberta
[2]
;
Lobo, Anderson Oliveira
[3]
Total Authors: 4
|
| Affiliation: | [1] Univ Vale Paraiba, Res & Dev Inst IP&D, LDAM, Sao Jose Dos Campos, SP - Brazil
[2] Univ Brasil, Inst Sci & Technol, Itaquera, SP - Brazil
[3] UFPI Fed Univ Piaui, Ctr Technol, LIMAV Interdisciplinary Lab Adv Mat, PPGCM Mat Sci & Engn Grad Program, Teresina, Piaui - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | MICROSCOPY RESEARCH AND TECHNIQUE; v. 81, n. 12, p. 1456-1466, DEC 2018. |
| Web of Science Citations: | 1 |
| Abstract | |
This study evaluated the antierosive effect applying a modified acidulated phosphate fluoride (APF) gel containing nano-hydroxyapatite (nHAp) on the enamel surface before erosion. After polishing, the exposed flat enamel surfaces (n = 7/group) from bovine incisors were treated with artificial saliva (S - negative control), orange juice (ERO), APF gel (positive control) and APF\_nHAp gel. All samples were subjected to six cycles of demineralization (orange juice, pH similar to 3.5, 10 min) followed by remineralization (saliva, 37 degrees C, 1 hr). The enamel surface morphology, topography, and inorganic composition were analyzed using scanning electron microscopy, roughness testing, and micro energy-dispersive X-ray fluorescence spectrometry, respectively. The mean (standard deviation) roughness values (Ra, mu m) were S, 0.13 (0.05); ERO, 0.25 (0.07); APF, 0.22 (0.08); and APF\_nHAp, 0.17 (0.04). Ra values were significantly higher after ERO (p < .01) and APF (p < .05) treatments than after S. The enamel surface morphology was altered by the treatments, except for the S specimens. The mineral content of the enamel showed a clear trend with Ca and P reduction in the order of APF < S < APF\_nHAp < ERO and APF < S < ERO < APF\_nHAp, respectively. We can conclude that APF gel increased mineral concentration on the enamel. Moreover, the APF\_nHAp material modified the composition and morphology of the enamel surface. (AU) | |
| FAPESP's process: | 11/17877-7 - Development of new polymeric scaffolds by electrospinning technique with incorporation of vertically aligned carbon nanotubes and nanohidroxyapatite for bone tissue regeneration |
| Grantee: | Anderson de Oliveira Lobo |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 11/20345-7 - Study of nanoparticle-incorporated diamond-like carbon films for biomedical applications |
| Grantee: | Fernanda Roberta Marciano |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 13/14464-9 - Molecular and biochemical characterization of thyroid carcinomas for clinical diagnosis |
| Grantee: | Renata de Azevedo Canevari |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 07/07984-5 - VIBRATIONAL, PHYSIC AND MECHANICAL CHARACTERIZATION OF DENTAL COMPOSITES DEGRADATION. |
| Grantee: | Luís Eduardo Silva Soares |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 09/18440-1 - Development of molecular markers related to cellular resistance after photodynamic therapy in breast carcinomas |
| Grantee: | Renata de Azevedo Canevari |
| Support Opportunities: | Regular Research Grants |