Abstract
An apparatus, using a small round test piece (10φ×6h, mm) screwed into a small bar was designed and produced. The apparatus was used to measure four kinds of bond strengths (by tension, shear by compression loading, flexural cleavage and torsional shear). Bond strength of two kinds of dental adhesive resins (PEX, SB C&B) to 18-8 stainless steel (SUS 304) was measured. Tensile bond strength and shear bond strength by compression loading of PEX to polished SUS 304 were 878±32, 567±84 kgf/cm2 respectively, and the difference was highly significant. There was no significant difference between tensile bond strength (420±52 kgf/cm2) and shear bond strength by compression loading (405±55 kgf/cm2 )of SB C&B to polished SUS 304. Bond strength by 4-point flexural cleavage of PEX and SB C&B reached over 1000 kgf/cm2, and there was no significant difference between the two resins.
