Comparison of various concentrations of tricalcium phosphate nanoparticles on mechanical properties and remineralization of fissure sealants.

  • Sara Tavassoli-Hojjati Department of Pediatric Dentistry, Dental School, Shahed University, Tehran, Iran.
  • Mohammad Atai Iran Polymer and Petrochemical Institute (IPPI), Tehran, Iran.
  • Roza Haghgoo Department of Pediatric Dentistry, Dental School, Shahed University, Tehran, Iran.
  • Sara Rahimian-Imam Department of Pediatric Dentistry, Dental School, Zahedan University of Medical Sciences, Zahedan, Iran.
  • Somayeh Kameli Department of Pediatric Dentistry, Dental School, Shahed University, Tehran, Iran.
  • Fatemeh Ahmaian-Babaki Department of Pediatric Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Faezeh Hamzeh Department of Operative Dentistry, Dental School, Kerman University of Medical Sciences, Kerman, Iran.
  • Maryam Ahmadyar Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Keywords: Fissure Sealants, Nanoparticles, Tooth Remineralization

Abstract

The aim of this study was to investigate the mechanical properties (flexural strength, micro-shear bond strength) and remineralizing potential of fissure sealants by adding various concentrations of β-tricalcium phosphate nanoparticles.This in-vitro study consisted of five experimental groups containing prepared nano-fisssure sealants (1-5 wt.% β-TCP nanoparticles) and two control groups containing a prepared and a commercial fissure sealant. Flexural/micro-shear bond strength values were measured using Zwick test machine. Cavities on sixty healthy premolar teeth were filled with the fissure sealants containing 0-5 wt.% of nano β-TCP. The samples were assessed for remineralization under scanning electron microscopy (SEM) and EDAX. Kolmogorov-Smirnov test, One-way ANOVA and Tukey's Post Hoc analysis/HSD were used to analyze the data.There was no significant difference between the flexural strengths/elastic modulus of the 0-5 wt.% nano β-TCP groups (p>0.05). The average flexural strength/elastic modulus of the prepared fissure sealant group (0%) was significantly higher than the commercial fissure sealant group (Clinpro) (p<0.05). There was no significant difference between micro-shear bond strengths of the experimental groups (1-5 wt.%), and between the commercial and the prepared (0%) fissure sealant groups (p>0.05). Examining the samples under SEM showed a significant increase in thickness of the intermediate layer with increasing concentrations of β-TCP nanoparticles (p<0.05).Addition of 1-5 wt.% β-TCP nanoparticles to the fissure sealants significantly increased the remineralization potential without affecting the mechanical properties.
How to Cite
1.
Tavassoli-Hojjati S, Atai M, Haghgoo R, Rahimian-Imam S, Kameli S, Ahmaian-Babaki F, Hamzeh F, Ahmadyar M. Comparison of various concentrations of tricalcium phosphate nanoparticles on mechanical properties and remineralization of fissure sealants. Front Dent. 11(4):379-88.
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