Paper Information

Journal:   JOURNAL OF RESEARCH IN DENTAL SCIENCES   SUMMER 2008 , Volume 5 , Number 2; Page(s) 16 To 25.
 
Paper: 

EFFECT OF NO-RINSE SELF-CONDITIONER ON SHEAR BOND STRENGTH OF METAL ORTHODONTIC BRACKETS

 
 
Author(s):  KHOSRAVANIFARD B., BANOVA S., VALAEI N., FARSI N.
 
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Abstract: 
Background and aim: One of the problems during orthodontic treatment is insufficient shear bond strength of orthodontic brackets in 30 minutes after bonding which may result in debonding and chair-time consuming. Recently different methods are being used for conditioning and shear bond strength improvement.
Since there were lack of articles, this study was designed to evaluate the effect of enamel conditioning with No-Rinse Self-Conditioner in the primary shear bond strength of metal orthodontic brackets in Tehran Azad Dental school Tehran 2008.
Materials and Methods: This was an experimental, In-vitro and Single Blind research.60 freshly extracted human premolars were randomly divided into 2 groups, each group consisted of 30 specimens. RMGIC was used to bond all metal brackets to the teeth. One group was conditioned with 10% Polyacrylic acid and in the other one No-Rinse Self-Conditioner was used. The specimens were embedded in acrylic placed in metal rings. Specimens were debonded after 30 minutes with a Universal Testing Machine at a crosshead speed of 1 mm/min. The T-test analysis was used. The Adhesive Remnant Index was determined after observation with 20X magnification. Fisher exact test was used for analyzing.
Results: The difference mentioned between shear bond strengths and Adhesive Remnant Index in two groups was not significant (P<0/6).
Conclusion: The present findings suggest that No-Rinse Self-Conditioner produces adequate shear bond strength and may facilitate conditioning process and reduces technique sensitivity.
 
Keyword(s): SHEAR BOND STRENGTH, ENAMEL CONDITIONING, RESIN MODIFIED GLASS IONOMER CEMENT, 10% POLYACRYLIC ACID, SELF-CONDITIONER
 
References: 
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