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Change in shear bond strength of orthodontic brackets using self-etching primer according to adhesive types and saliva contamination  

Nam, Eun-Hye (Department of Dentistry, College of Medicine, In-Ha University)
Yoon, Young-Ah (Department of Dentistry, College of Medicine, In-Ha University)
Kim, Il-Kyu (Department of Dentistry, College of Medicine, In-Ha University)
Publication Information
The korean journal of orthodontics / v.35, no.6, 2005 , pp. 433-442 More about this Journal
Abstract
The purpose of this study was to evaluate and compare the shear bond strength of orthodontic brackets depending on the variety of adhesives and whether saliva exists, by using self-etching primer (SEP). Groups were divided according to the type of adhesive into resin adhesive (Trans bond XT) and resin-modified glass ionomer cement (Fuji Ortho LC). One group of resin adhesive used XT primer after etching with 37% phosphoric acid, and the other group used self-etching primer. One group of resin-modified glass ionomer cement only used etching for bonding, and the other group used SEP. Each of the groups were also classified by whether saliva was contaminated or not. and then the shear bond strength was measured. The results showed that when using resin adhesive, the shear bond strength of SEP was lower than the XT primer. In the resin-modified glass ionomer cement groups, the shear bond strength which depends on the priming method, did not have a meaningful difference statistically When saliva was contaminated, the group which used SEP, regardless of the adhesive variety, had a greater shear bond strength than the normal priming group. From these results, SEP showed a shear bond strength that is possible to be used clinically, regardless of the adhesive variety. It can especially be clinically useful to use SEP to bond brackets even on tooth surfaces contaminated with saliva, because it offers the appropriate bonding strength as well as shorter treatment time and easy application.
Keywords
Shear bond strength; Self-etching primer; Adhesive; Saliva contamination;
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