id	keyword
bjos-8651058	degradation
bjos-8651058	materials
bjos-8651058	surface
bjos-8651058	roughness
bjos-8651058	composite
bjos-8651058	empress
bjos-8651058	z350
bjos-8651058	dent
bjos-8651058	color
bjos-8651058	values
bjos-8651058	hardness
bjos-8651058	baseline
bjos-8651058	dental
bjos-8651058	restorative