J. Orthod.
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British Journal of Orthodontics, Vol 18, 203-209, Copyright © 1991 by British Orthodontic Society

ARTICLES

An evaluation of zirconium oxide brackets: a preliminary laboratory and clinical report

SD Springate and LJ Winchester
Institute of Dental Surgery, London.

A pre-production sample of zirconium oxide (ceramic) brackets was examined in this study. A laboratory investigation of the tensile/peel bond strength of the brackets was carried out using two light-cured adhesives (Prismafil and Heliosit) and one chemically-cured adhesive (Delphic). The mode of failure was also investigated using optical and scanning electron microscopy. The bond strengths achieved with Prismafil were statistically significantly (P less than 0.05) lower than Heliosit and Delphic between which no significant differences were found. All samples failed at the bracket-adhesive interface. A clinical test demonstrated the extreme ease of sliding along stainless steel and nickel-titanium archwires, and revealed a low plaque adhesion. The principal disadvantage of these brackets appears to be their off-white highly opaque appearance which in addition to giving poor aesthetics may adversely affect bond strength with light-cured adhesives.


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J. S. Russell
Current Products and Practice: Aesthetic Orthodontic Brackets
J. Orthod., June 1, 2005; 32(2): 146 - 163.
[Abstract] [Full Text] [PDF]


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Copyright © 1991 British Orthodontic Society.