id	keyword
dentistry3000-1052	impact
dentistry3000-1052	acrylic
dentistry3000-1052	tto
dentistry3000-1052	surface
dentistry3000-1052	strength
dentistry3000-1052	roughness
dentistry3000-1052	oil
dentistry3000-1052	tree
dentistry3000-1052	tea
dentistry3000-1052	resin