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Novel hydroxyapatite nanorods improve anti-caries efficacy of enamel infiltrants.
Andrade Neto, D M; Carvalho, E V; Rodrigues, E A; Feitosa, V P; Sauro, S; Mele, G; Carbone, L; Mazzetto, S E; Rodrigues, L K; Fechine, P B A.
Afiliação
  • Andrade Neto DM; Group of Chemistry of Advanced Materials (GQMAT) - Department of Analytical Chemistry and Physic-chemistry, Federal University of Ceará - UFC, Campus do Pici, CP 12100, Zip Code 60451-970, Fortaleza, Brazil.
  • Carvalho EV; Group of Chemistry of Advanced Materials (GQMAT) - Department of Analytical Chemistry and Physic-chemistry, Federal University of Ceará - UFC, Campus do Pici, CP 12100, Zip Code 60451-970, Fortaleza, Brazil.
  • Rodrigues EA; Post-Graduate Program in Dentistry - Department of Restorative Dentistry, Federal University of Ceará, Fortaleza, Brazil.
  • Feitosa VP; Post-Graduate Program in Dentistry - Department of Restorative Dentistry, Federal University of Ceará, Fortaleza, Brazil. Electronic address: victorpfeitosa@hotmail.com.
  • Sauro S; Post-Graduate Program in Dentistry - Department of Restorative Dentistry, Federal University of Ceará, Fortaleza, Brazil; Dental Biomaterials - Departmento de Odontologia, Facultad de Ciencias de la Salud, CEU-Cardenal Herrera University, Alfara del Patriarca, 46115 Valencia, Spain.
  • Mele G; Dipartimento di Ingegneria dell'Innovazione, Università del Salento, Via Arnesano, 73100 Lecce, Italy.
  • Carbone L; CNR-IPCF UOS Pisa, Via G. Moruzzi 1 - 56124 Pisa, Italy.
  • Mazzetto SE; Group of Chemistry of Advanced Materials (GQMAT) - Department of Analytical Chemistry and Physic-chemistry, Federal University of Ceará - UFC, Campus do Pici, CP 12100, Zip Code 60451-970, Fortaleza, Brazil.
  • Rodrigues LK; Post-Graduate Program in Dentistry - Department of Restorative Dentistry, Federal University of Ceará, Fortaleza, Brazil.
  • Fechine PB; Group of Chemistry of Advanced Materials (GQMAT) - Department of Analytical Chemistry and Physic-chemistry, Federal University of Ceará - UFC, Campus do Pici, CP 12100, Zip Code 60451-970, Fortaleza, Brazil. Electronic address: fechine@ufc.br.
Dent Mater ; 32(6): 784-93, 2016 06.
Article em En | MEDLINE | ID: mdl-27068739
OBJECTIVES: Enamel resin infiltrants are biomaterials able to treat enamel caries at early stages. Nevertheless, they cannot prevent further demineralization of mineral-depleted enamel. Therefore, the aim of this work was to synthesize and incorporate specific hydroxyapatite nanoparticles (HAps) into the resin infiltrant to overcome this issue. METHODS: HAps were prepared using a hydrothermal method (0h, 2h and 5h). The crystallinity, crystallite size and morphology of the nanoparticles were characterized through XRD, FT-IR and TEM. HAps were then incorporated (10wt%) into a light-curing co-monomer resin blend (control) to create different resin-based enamel infiltrants (HAp-0h, HAp-2h and HAp-5h), whose degree of conversion (DC) was assessed by FT-IR. Enamel caries lesions were first artificially created in extracted human molars and infiltrated using the tested resin infiltrants. Specimens were submitted to pH-cycling to simulate recurrent caries. Knoop microhardness of resin-infiltrated underlying and surrounding enamel was analyzed before and after pH challenge. RESULTS: Whilst HAp-0h resulted amorphous, HAp-2h and HAp-5h presented nanorod morphology and higher crystallinity. Resin infiltration doped with HAp-2h and HAp-5h caused higher enamel resistance against demineralization compared to control HAp-free and HAp-0h infiltration. The inclusion of more crystalline HAp nanorods (HAp-2h and HAp-5h) increased significantly (p<0.05) the DC. SIGNIFICANCE: Incorporation of more crystalline HAp nanorods into enamel resin infiltrants may be a feasible method to improve the overall performance in the prevention of recurrent demineralization (e.g. caries lesion) in resin-infiltrated enamel.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Durapatita / Cimentos de Resina / Esmalte Dentário / Nanotubos Limite: Humans Idioma: En Revista: Dent Mater Assunto da revista: ODONTOLOGIA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Durapatita / Cimentos de Resina / Esmalte Dentário / Nanotubos Limite: Humans Idioma: En Revista: Dent Mater Assunto da revista: ODONTOLOGIA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido