Evaluation of structural and mechanical properties of aerosol-deposited bioceramic films for orthodontic brackets

Myung Yeon Cho, Dong Won Lee, Ik Soo Kim, Won Jung Kim, Sang Mo Koo, Daeseok Lee, Yoon Hyun Kim, Jong Min Oh

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Four types of bioceramic films (Al 2 O 3 , SiO 2 , hydroxyapatite (HA), and brushite) were prepared via a simple aerosol deposition (AD) process at room temperature, and their structural and mechanical characteristics were compared to verify their potential for use in orthodontic brackets. The results showed that the HA and brushite films featured considerably high deposition rates compared with other coating technologies. Moreover, it was revealed that the crystallite size of all samples was largely reduced below 100 nm, which can enhance the biological performance and mechanical properties of bioceramic films. The HA and brushite films also had optimum mechanical properties, namely, adhesive strength and shear bond strength. These two instrumental mechanical properties were believed to be achieved by not only thicker bumps due to the high deposition rate but also strong mechanical interlocking at the ceramic-to-resin interface. This study confirmed that AD-prepared HA and brushite films have high potential for application in orthodontic brackets.

Original languageEnglish
Pages (from-to)6702-6711
Number of pages10
JournalCeramics International
Issue number6
Publication statusPublished - 2019 Apr 15
Externally publishedYes


  • Adhesive strength
  • Aerosol deposition
  • Bioceramic films
  • Orthodontic bracket
  • Shear bond strength
  • Structural characteristics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry


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