Effects of a new desensitizing paste containing 8% arginine and calcium carbonate on the shear bond strength of orthodontic brackets / 대한치과교정학회지
Korean Journal of Orthodontics
;
: 121-126, 2011.
Article
in English
| WPRIM
| ID: wpr-645199
ABSTRACT
OBJECTIVE:
The purpose of this study was to evaluate shear bond strength (SBS) and failure site location of brackets bonded to enamel with or without desensitizer application.METHODS:
Sixty-six freshly extracted human premolar teeth were randomly divided into 3 groups of 22. Group 1 served as the control. Desensitizer was applied to the remaining teeth at two time intervals (Group 2, bonded immediately after Pro-Relief(TM) (Colgate-Palmolive Co., New York, NY, USA) application and Group 3, bonded 30 days after Pro-Relief(TM) application with the teeth stored in artificial saliva during the 30 days). Orthodontic brackets were bonded with a light cure composite resin and cured with a halogen light. After bonding, the SBS of the brackets was tested using a universal testing device. Adhesive remnant index (ARI) scores were determined after the brackets failed. Data were analyzed with analysis of variance, Tukey's HSD, and G tests.RESULTS:
The SBS was significantly lower in Group 2 than in Groups 1 (p = 0.024) and 3 (p = 0.017). Groups 1 and Group 3 did not differ (p = 0.991). ARI scores did not differ significantly among groups.CONCLUSIONS:
The Pro-Relief(TM) desensitizer agent applied immediately before bonding significantly reduces bond strength, but the SBS values still exceed the minimum 5.9 - 7.8 MPa required for adequate clinical performance. Immersing the teeth in artificial saliva for 30 days after applying the Pro-Relief(TM) desensitizer agent and before bonding increased the SBS to control levels.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Arginine
/
Saliva, Artificial
/
Tooth
/
Bicuspid
/
Calcium Carbonate
/
Adhesives
/
New York
/
Calcium
/
Orthodontic Brackets
/
Collodion
Limits:
Humans
Country/Region as subject:
North America
Language:
English
Journal:
Korean Journal of Orthodontics
Year:
2011
Type:
Article
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