Niobium pentoxide as a novel filler for dental adhesive resin

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• 作者：Vicente Castelo Branco Leitune^a ; ^{vicente.leitune@ufrgs.br} ; Fabrí ; cio Mezzomo Collares^a ; Antonio Takimi^b ; Ginia Brito de Lima^c ; Cé ; sar Liberato Petzhold^c ; Carlos Pé ; rez Bergmann^b ; Susana Maria Werner Samuel^a
• 关键词：Niobium pentoxide ; Dentine bonding agents ; Composite resins
• 刊名：Journal of Dentistry
• 出版年：2013
• 出版时间：February, 2013
• 年：2013
• 卷：41
• 期：2
• 页码：106-113
• 全文大小：781 K

文摘

Objectives

The purpose of this study was to develop an adhesive resin with incorporation of niobium pentoxide and evaluate its properties.

Methods

Niobium pentoxide was characterised by X-ray diffraction, surface area, particle size, micro-Raman, scanning electron microscopy and the effectiveness of silanisation process by Fourier Transform Infrared (FTIR). An experimental adhesive resin was formulated with 0, 5, 10 and 20 wt % Nb₂O₅. The formulated adhesive resins were evaluated based on microhardness, degree of conversion, radiopacity and interface (resin/dentine) characterisation by micro-Raman.

Results

The particles used in this study presented a monoclinic crystalline phase with typical chemical groups and micrometre mean size. Microhardness and radiopacity increased with higher amounts of Nb₂O₅, and the particles were able to penetrate into the hybrid layers.

Conclusions

Therefore, Nb₂O₅ may be an alternative for polymer-based biomaterials.

Clinical significance: Niobium pentoxide could be used to produce adhesive resins with enhanced properties.