Orthodontic bracket bonding to glazed full-contour zirconia
Objectives This study evaluated the effects of different surface conditioning methods on the bond strength of orthodontic brackets to glazed full-zirconia surfaces. Materials and Methods Glazed zirconia (except for the control, Zirkonzahn Prettau) disc surfaces were pre-treated: PO (control), p...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Korean Academy of Conservative Dentistry
2016-05-01
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| Series: | Restorative Dentistry & Endodontics |
| Online Access: | https://doi.org/10.5395/rde.2016.41.2.106 |
| _version_ | 1811255151996960768 |
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| author | Ji-Young Kwak Hyo-Kyung Jung Il-Kyung Choi Tae-Yub Kwon |
| author_facet | Ji-Young Kwak Hyo-Kyung Jung Il-Kyung Choi Tae-Yub Kwon |
| author_sort | Ji-Young Kwak |
| collection | DOAJ |
| description | Objectives
This study evaluated the effects of different surface conditioning methods on the bond strength of orthodontic brackets to glazed full-zirconia surfaces.
Materials and Methods
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. |
| first_indexed | 2024-04-12T17:19:28Z |
| format | Article |
| id | doaj.art-11252a8321334421b3f3077bbea4440f |
| institution | Directory Open Access Journal |
| issn | 2234-7658 2234-7666 |
| language | English |
| last_indexed | 2024-04-12T17:19:28Z |
| publishDate | 2016-05-01 |
| publisher | Korean Academy of Conservative Dentistry |
| record_format | Article |
| series | Restorative Dentistry & Endodontics |
| spelling | doaj.art-11252a8321334421b3f3077bbea4440f2022-12-22T03:23:31ZengKorean Academy of Conservative DentistryRestorative Dentistry & Endodontics2234-76582234-76662016-05-0141210611310.5395/rde.2016.41.2.106Orthodontic bracket bonding to glazed full-contour zirconiaJi-Young Kwak0Hyo-Kyung Jung1Il-Kyung Choi2Tae-Yub Kwon3Kyungpook National UniversityDepartment of Dental Laboratory Technology, Daegu Health CollegeKyungpook National UniversityKyungpook National UniversityObjectives This study evaluated the effects of different surface conditioning methods on the bond strength of orthodontic brackets to glazed full-zirconia surfaces. Materials and Methods 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.https://doi.org/10.5395/rde.2016.41.2.106 |
| spellingShingle | Ji-Young Kwak Hyo-Kyung Jung Il-Kyung Choi Tae-Yub Kwon Orthodontic bracket bonding to glazed full-contour zirconia Restorative Dentistry & Endodontics |
| title | Orthodontic bracket bonding to glazed full-contour zirconia |
| title_full | Orthodontic bracket bonding to glazed full-contour zirconia |
| title_fullStr | Orthodontic bracket bonding to glazed full-contour zirconia |
| title_full_unstemmed | Orthodontic bracket bonding to glazed full-contour zirconia |
| title_short | Orthodontic bracket bonding to glazed full-contour zirconia |
| title_sort | orthodontic bracket bonding to glazed full contour zirconia |
| url | https://doi.org/10.5395/rde.2016.41.2.106 |
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