불소함유여부에 따른 치면열구전색제의 전단결합강도에 관한 실험적 연구 = An Experimental Study on the Shear Bond Strength of Fluoride-Containing Sealant and Non-Fluoride Containing Sealant

다국어 초록 (Multilingual Abstract)

This study was to evaluate shear bond strength fluoride-relesing sealant and nonfluoride-relesing sealant to enamel surface of bovine tooth.
80 extracted bovine teeth were randomly assigned to four groups,and four kind of sealants including Teethmate-A(Kuraray Co.),Teethmate-F(Kuraray Co.),Helioseal(Vivadent Co.),Helioseal-F(Vivadent Co.) were bonded to exposed enamel surfaces using silicon plate.
Shear bond strength was determined in an instron universal testing machine at a crosshead speed of 1mm/min.Then,the fracture surfaces of test specimens were investigated with scanning electron microscope.
The obtained results were as follows;
1.The shear bond strength decreased in the following oder:Teethmate-A(18.31MPa),Teethmate-F(11.90MPa),Helioseal(11.74MPa),Helioseal-F(10.64MPa).
2.The shear bond strength of Teethmate-A showed significantly higher than that of Teethmate-F(P<0.05),but Helioseal and Helioseal-F didn't showed statistically different(P<0.05).
3.According to the SEM,Teethmate-A group showed cohesive failure,and Teethmate-A group & Helioseal group showed mixed pattern of cohesive failure and Helioseal-F group showed adhesive failure.