Orthodontic bracket bonding to glazed full-contour zirconia
Restorative Dentistry & Endodontics
;
: 106-113, 2016.
Article
in English
| WPRIM
| ID: wpr-205727
ABSTRACT
OBJECTIVES:
This study evaluated the effects of different surface conditioning methods on the bond strength of orthodontic brackets to glazed full-zirconia surfaces. MATERIALS ANDMETHODS:
Glazed zirconia (except for the control, Zirkonzahn Prettau) disc surfaces were pre-treated PO (control), polishing; BR, bur roughening; PP, cleaning with a prophy cup and pumice; HF, hydrofluoric acid etching; AA, air abrasion with aluminum oxide; CJ, CoJet-Sand. The surfaces were examined using profilometry, scanning electron microscopy, and electron dispersive spectroscopy. A zirconia primer (Z-Prime Plus, Z) or a silane primer (Monobond-S, S) was then applied to the surfaces, yielding 7 groups (PO-Z, BR-Z, PP-S, HF-S, AA-S, AA-Z, and CJ-S). Metal bracket-bonded specimens were stored in water for 24 hr at 37℃, and thermocycled for 1,000 cycles. Their bond strengths were measured using the wire loop method (n = 10).RESULTS:
Except for BR, the surface pre-treatments failed to expose the zirconia substructure. A significant difference in bond strengths was found between AA-Z (4.60 ± 1.08 MPa) and all other groups (13.38 ± 2.57 - 15.78 ± 2.39 MPa, p < 0.05). For AA-Z, most of the adhesive remained on the bracket.CONCLUSIONS:
For bracket bonding to glazed zirconia, a simple application of silane to the cleaned surface is recommended. A zirconia primer should be used only when the zirconia substructure is definitely exposed.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Spectrum Analysis
/
Water
/
Microscopy, Electron, Scanning
/
Adhesives
/
Orthodontic Brackets
/
Aluminum Oxide
/
Hydrofluoric Acid
Language:
English
Journal:
Restorative Dentistry & Endodontics
Year:
2016
Type:
Article
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