Bond strength of orthodontic brackets bonded to enamel with a self-etching primer after bleaching and desensitizer application / 대한치과교정학회지
Korean Journal of Orthodontics
;
: 342-348, 2010.
Article
in English
| WPRIM
| ID: wpr-654272
ABSTRACT
OBJECTIVE:
The aim of this study was to compare the shear bond strengths (SBS) of orthodontic brackets bonded to enamel with a self-etching primer after bleaching, desensitizer application and combined treatment.METHODS:
Forty-eight premolars were randomly divided into four groups, each with n = 12 premolar samples. The four groups were; Group1 15% hydrogen-peroxide office bleaching agent (Illumine Office-IO), Group 2 IO + BisBlock Oxalate Dentin-Desensitizer, Group 3 Bis Block Oxalate Dentin-Desensitizer, Group 4 No treatment (control). Twenty-four hours after bonding, the specimens were tested in SBS at a crosshead speed of 5 mm/min until the brackets debonded. The failure mode of the brackets was determined by a modified adhesive remnant index.RESULTS:
Bleaching, bleaching and desensitizer treatment, and desensitizer treatment alone all significantly reduced SBS of the orthodontic brackets (p = 0.001). No statistically significant difference was found between Group 1, Group 2 and Group 3 (Group 1-Group 2, p = 0.564; Group 1-Group 3, p = 0.371; Group 2-Group 3, p = 0.133). The predominant mode of failure for the treatment groups (Group1, Group 2 and Group 3) was at the enamel-adhesive interface leaving 100% of the adhesive on the bracket base.CONCLUSIONS:
Bleaching and desensitizer treatment should be delayed until the completion of orthodontic treatment.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Bicuspid
/
Adhesives
/
Orthodontic Brackets
/
Oxalic Acid
/
Dental Enamel
Language:
English
Journal:
Korean Journal of Orthodontics
Year:
2010
Type:
Article
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