Development of brushite particles synthesized in the presence of acidic monomers for dental applications
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Materials Science & Engineering C
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Objectives: To synthesize and characterize brushite particles in the presence of acidic monomers (acrylic acid/
AA, citric acid/CA, and methacryloyloxyethyl phosphate/MOEP) and evaluate the effect of these particles on
degree of conversion (DC), flexural strength/modulus (FS/FM) and ion release of experimental composites.
Methods: Particles were synthesized by co-precipitation with monomers added to the phosphate precursor solution
and characterized for monomer content, size and morphology. Composites containing 20 vol% brushite
and 40 vol% reinforcing glass were tested for DC, FS and FM (after 24 h and 60 d in water), and 60-day ion
release. Data were subjected to ANOVA/Tukey tests (DC) or Kruskal–Wallis/Dunn tests (FS and FM, alpha: 5%).
Results: The presence of acidic monomers affected particle morphology. Monomer content on the particles was
low (0.1–1.4% by mass). Composites presented similar DC. For FS/24 h, only the composite containing DCPD_AA
was statistically similar to the composite containing 60 vol% of reinforcing glass (without brushite, “control”).
After 60 days, all brushite-containing materials showed similar FS, statistically lower than the control composite
(p<0.01). Composites containing DCPD_AA, DCPD_MOEP or DCPD_U (“unmodified”) showed statistically similar
FM/24 h, higher than the control composite. After prolonged immersion, all composites were similar to the
control composite, except DCPD_AA. Cumulative ion release ranged from 21 ppm to 28 ppm (calcium) and
9 ppm to 17 ppm (phosphate). Statistically significant reductions in ion release between 15 and 60 days were
detected only for the composite containing DCPD_MOEP.
Significance: Acidic monomers added to the synthesis affected brushite particle morphology. After 60-day storage
in water, composite strength was similar among all brushite-containing composites. Ion release was sustained
for 60 days and it was not affected by particle morphology.
Como referenciar
CHIARI, MARINA D.S.; RODRIGUES, MARCELA C.; PINTO, MIRELLA F.C.; VIEIRA, DOUGLAS N.; VICHI, FLAVIO M.; VEGA, OSCAR; CHRZANOWSKI, WOJCIECH; NAGAOKA, NORIYUKI; BRAGA, ROBERTO R. Development of brushite particles synthesized in the presence of acidic monomers for dental applications. Materials Science & Engineering C, v. 116, p. 1-8, 2020. DOI: 10.1016/j.msec.2020.111178. Disponível em: http://repositorio.ipen.br/handle/123456789/31396. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.