Orthodontic bracket bonding to glazed full-contour zirconia
Restorative Dentistry & Endodontics
;
: 106-113, 2016.
Artigo
em Inglês
| 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.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Análise Espectral
/
Água
/
Microscopia Eletrônica de Varredura
/
Adesivos
/
Braquetes Ortodônticos
/
Óxido de Alumínio
/
Ácido Fluorídrico
Idioma:
Inglês
Revista:
Restorative Dentistry & Endodontics
Ano de publicação:
2016
Tipo de documento:
Artigo
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