id	keyword
bjos-8674006	cape
bjos-8674006	dentin
bjos-8674006	collagen
bjos-8674006	doi
bjos-8674006	time
bjos-8674006	mass
bjos-8674006	modulus
bjos-8674006	elasticity
bjos-8674006	ethanol
bjos-8674006	water
bjos-8674006	acid
bjos-8674006	treatment