| Texto completo | |
| Autor(es): |
Lira Viana, Itallo Emidio
[1]
;
Lopes, Raquel Marianna
[1]
;
Oliveira Silva, Flavia Rodrigues
[2]
;
Lima, Nelson Batista
[2]
;
Correa Aranha, Ana Cecilia
[1]
;
Feitosa, Sabrina
[3]
;
Scaramucci, Tais
[1]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Dept Restorat Dent, Sch Dent, Av Prof Lineu Prestes 2227, BR-05508000 Sao Paulo, SP - Brazil
[2] Nucl & Energy Res Inst IPEN CNEN, Mat Sci & Technol Ctr, Av Prof Lineu Prestes 2242, BR-05508000 Sao Paulo, SP - Brazil
[3] Indiana Univ, Dept Biomed Sci & Comprehens Care, Sch Dent, 1121 Michigan St, Indianapolis, IN 46202 - USA
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Dentistry; v. 92, JAN 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
Objective: To evaluate the anti-erosive effect of solutions containing beta-tricalcium phosphate (beta-TCP) nanoparticles functionalized with fluoride or with fluoride plus stannous on enamel and dentin. Methods: beta-TCP nanoparticles were synthesized and characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Sixty enamel and dentin specimens were randomly allocated into the groups (n=10): Control (water); F (NaF, 225 ppm F-); F+ Sn (NaF+SnCl2, 800 ppm Sn2+); F+beta-TCP (F+40 ppm beta-TCP); F+Sn+beta- TCP (F+Sn+40 ppm beta-TCP); F+Sn+100 beta-TCP (F+Sn+100 ppm beta-TCP). Specimens underwent erosion-remineralization cycling (5 min immersion into 1 % citric acid solution and 60 min exposure to artificial saliva, 4x/day, 5 days). Immersion in the test solutions was performed for 2 min, 2x/day. Surface loss (SL, in mu m) was determined by optical profilometry at the end of cycling. Data were analyzed using one way-ANOVA and Tukey's tests (alpha=0.05). Results: XRD confirmed the beta-TCP phase. TEM micrographs showed differences between the bare nanoparticle and the beta-TCP functionalized with F and Sn. All enamel groups presented lower SL than the control, with F + Sn, F+Sn+beta-TCP, and F+Sn+100 beta-TCP showing the lowest values. For dentin, all the groups had lower SL than the control. F+beta-TCP presented the lowest SL, significantly differing from all the other groups. Conclusion: beta-TCP nanoparticles functionalized with fluoride showed improved anti-erosive effect compared to the fluoride solution on dentin. There was no significant effect of the beta-TCP nanoparticles functionalized with fluoride plus stannous in both substrates. Clinical Relevance: beta-TCP nanoparticles are a promising agent to be added to oral health products to improve the protective effect of fluoride against dentin erosion. (AU) | |
| Processo FAPESP: | 15/15629-7 - Análise da perda de estrutura dentinária e oclusão tubular após desafio erosivo e abrasivo com diferentes cremes dentais contendo agentes dessensibilizantes: estudo randomizado in situ |
| Beneficiário: | Raquel Marianna Lopes Gaona |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |