Comparison of Shear Bond Strength and Debonding Level of Two Orthodontic Adhesive: Fuji Ortho Lc and Transbond XT

Glass-ionomer cements and resin-modified glass-ionomers could be optimal orthodontic adhesives if they can provide adequate bonding strength. The aim of this study was to compare the shear bond strength of two orthodontic adhesives: Fuji Ortho LC and Transbond XT.
In this in vitro study, 32 sound extracted premolars were divided into two equal groups (n = 16). Brackets were bonded with Fuji Ortho LC in group 1 and Transbond XT in group 2. After 72 hours their shear bond strengths were measured; then the samples were analyzed under a stereomicroscope at ×10 and debonding locations were scored using Adhesive Remnant Index. Data were analyzed with t-test (α = 0.05).
The mean shear bond strength values in groups 1 and 2 were 7.73 and 16.79, respectively, with no significant difference (p value The shear bond strength of Fuji Ortho LC was less than that of Transbond XT, but still in an acceptable range for orthodontic bonding.