id	keyword
dentistry3000-179	tray
dentistry3000-179	light
dentistry3000-179	materials
dentistry3000-179	group
dentistry3000-179	strength
dentistry3000-179	flexural
dentistry3000-179	self
dentistry3000-179	stability
dentistry3000-179	study
dentistry3000-179	custom
dentistry3000-179	resin