The aim of this study was to determine the influence of dentinal region on shear
bond strength by comparing the shear bond strength between root and coronal dentin when using a nanoionomer
material (Ketac N100,3M Espe) and a fifth generation bondin
g material (Excite,Vivadent)
applied with a resin composite (Tetric-ceram,Vivadent).
The etching primary teeth dentin is more important factors for bonding
composit with primary teeth dentin.
objective: The aim of this research is to know the effect of time etching with the phosphoric acid 37% by
duration (7 or 15 seconds) for the composite bonding strength with primary molar dentin towards shear
strength.
Etching by phosphoric acid is considered an important factor to achieve
resin bonding to Primary enamel.
Bond strength was significantly higher in the third group (etching for
35sec) than the other groups (etching for (15), (25), or (45)sec).
The
re were no significant differences in bond strength between etch
durations: (15), (25), or (45) sec.
The purpose of this study was to compare the shear bond
strength to root dentin of a nano- ionomer material (Ketac N100,3M) and a
fifth generation bonding material (Excite,Vivadent) applied with a resin
composite (Tetric-ceram,Vivadent), in order to determine the material of
choice for restoring root extended lesions.
