Bond strength comparison and scanning electron microscopic evaluation of three orthodontic bonding systems

Masahiro Iijima, Shuichi Ito, Toshihiro Yuasa, Takeshi Muguruma, Takashi Saito, Itaru Mizoguchi

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

This study sought to assess the efficacy of two self-etching primer systems (Transbond Plus and Beauty Ortho Bond) on orthodontic brackets. Therefore, shear bond strengths and bracket-adhesive failure modes (ARI scores) were determined and compared against an etch-and-rinse adhesive system (Transbond XT) under two experimental conditions (dry and saliva application). Shear bond strength test was performed at a crosshead speed of 0.5 mm/min, while enamel surfaces and enamel-adhesive interfaces were examined with SEM. There were no significant differences between Transbond XT (9.15 MPa) and Transbond Plus (9.74 MPa) under the dry condition, whereas that of Beauty Ortho Bond (6.47 MPa) was significantly lower than these two systems. Under SEM examination, both self-etching primers showed a milder etching effect and decreased depth of resin penetration into intact enamel than Transbond XT. In conclusion, results of this study showed that both self-etching systems seemed to offer more merits than conventional acid etching because of fewer irreversible changes to enamel.

Original languageEnglish
Pages (from-to)392-399
Number of pages8
JournalDental materials journal
Volume27
Issue number3
DOIs
Publication statusPublished - 2008 Jul 8
Externally publishedYes

Keywords

  • Orthodontic brackets
  • Self-etching primer
  • Shear bond strength

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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