Effect of tooth age on bond strength to dentin

Abstract

his in vitro study evaluated the effect of tooth age on the tensile bond strength of Prime & Bond NT adhesive system to dentin. Human third molars from the five age groups were analyzed: A-17 to 20yrs, B-21 to 30yrs, C-31 to 40yrs, D-41 to 50yrs and E-51 to 63yrs. The occlusal enamel was removed using a diamond saw under water cooling and the dentin surface was wet-ground with 600-grit SiC paper to obtain flat surfaces. The adhesive system was applied according to the manufacturer's instructions and a 6-mm high resin "crown" was built-up with resin composite. Teeth were stored for 24 hours in distilled water at 37 o C and prepared for micro-tensile testing. Each specimen was mounted in a testing jig attached to a universal testing machine and stressed in tension at a crosshead speed of 0.5mm/min until failure. The means of tensile bond strength were (MPa):

Glass–ceramics bonding in geriatric patients: comparison with young teeth

“…Our results were in accordance with the literature which revealed that age did not influence the bond strength of any adhesives tested (Giannini et al ,. Brackett et al ,.…”

Validity of bond strength tests: A critical review-Part II

“…Age did not affect bond strength values of glass-ionomer based, all-in-one, single-step, self-etching adhesive system to dental hard tissues. [444546]…”

Microshear bond strength according to dentin cleansing methods before recementation

“…In addition, it was shown that age factor may affect bond strength 33,34,35. For this reason, superficial dentin layers from the teeth which were collected from the patients with the age group between 20 and 30 were used in present study for both standardization and higher bond strength.…”