Effects of ultrasonic instrumentation with different scaler-tip angulations on the shear bond strength and bond failure mode of metallic orthodontic brackets / 대한치과교정학회지
The Korean Journal of Orthodontics
;
: 44-49, 2014.
Article
in English
| WPRIM
| ID: wpr-86806
ABSTRACT
OBJECTIVE:
To evaluate the effects of ultrasonic instrumentation with different scaler-tip angulations on the shear bond strength (SBS) and bond failure mode of metallic orthodontic brackets.METHODS:
Adhesive pre-coated metallic brackets were bonded to 72 extracted human premolars embedded in autopolymerizing acrylic resin. The teeth were randomly divided into 3 groups (n = 24 each) to undergo no treatment (control group) or ultrasonic instrumentation with a scaler-tip angulation of 45degrees (45degrees-angulation group) or 0degrees (0degrees-angulation group). SBS was tested in a universal testing machine, and adhesive remnant index (ARI) scores were recorded. The Kruskal-Wallis test and Mann-Whitney U-test were used for statistical analysis.RESULTS:
The control group had a significantly higher mean SBS value than the treated groups, which showed no significant differences in their mean SBS values. The ARI scores were not significantly different among the groups.CONCLUSIONS:
Ultrasonic instrumentation around the bracket base reduces the SBS of metallic orthodontic brackets, emphasizing the need for caution during professional oral hygiene procedures in orthodontic patients. The scaler-tip angulation does not influence the SBS reduction and bond failure mode of such brackets.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Oral Hygiene
/
Tooth
/
Ultrasonics
/
Bicuspid
/
Adhesives
/
Orthodontic Brackets
Limits:
Humans
Language:
English
Journal:
The Korean Journal of Orthodontics
Year:
2014
Type:
Article
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