Polymerization shrinkage evaluation in experimental dental composite filled with montmorillonite nanoparticles

Autor(es)

Campos, Luiza M. P. ^[1] ; Boaro, Leticia C. ^[2] ; Santos, Tamiris M. R. ^[1] ; Santos, Vinicius J. ^[1] ; Grecco-Romano, Rebeca ^[1] ; Santos, Mariana J. ^[1] ; Parra, Duclerc F. ^[1]

Afiliação do(s) autor(es)

^[1] CNEN SP, IPEN, Nucl & Energy Res Inst, Av Prof Lineu Prestes 2242, BR-05508000 Sao Paulo, SP - Brazil

^[2] Univ Santo Amaro, Sch Dent, R Prof Eneas Siqueira Neto 340, BR-04829300 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 131, n. 1, p. 771-774, JAN 2018.
• Citações Web of Science: 2

Resumo

This study aimed to develop experimental dental restorative composites by the addition of montmorillonite (MMT) nanoparticles in a polymeric matrix-based BisGMA/TEGDMA, to assess the possibility of a different dimensional behavior during the photo-polymerization. The characterization of experimental composites was established with the following analyses: thermal-mechanical analysis (TMA), X-ray diffraction (XRD) and transmission electron microscopy. Data for TMA were analyzed using one-way ANOVA and Tukey test (p < 0.05). It was observed that the experimental composites filled with MMT nanoparticle showed statistically similar polymerization shrinkage values (by TMA analysis) in the concentration of 30% and statistically lower polymerization shrinkage values in the concentration of 50%, compared to composites filled with barium glass (BG-control groups). These results may be related to the interaction polymeric matrix/MMT nanoparticles and the formation of nanocomposites, observed by XRD and TEM analyses. (AU)

• Processo FAPESP: 16/19254-0 - Síntese e caracterização de hidrogéis de poli (N-vinil-2-pirrolidona) contendo argila laponite RD para modulação da liberação de neomicina/nano prata
• Beneficiário: Vinicius Juvino dos Santos
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 13/07229-3 - Estudo da adição de nanopartículas argilominerais em matrizes poliméricas fotoativadas a base de bisgma/tegdma, aplicadas à odontologia.
• Beneficiário: Luiza Mello de Paiva Campos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado