id	keyword
dentistry3000-777	pain
dentistry3000-777	canal
dentistry3000-777	systems
dentistry3000-777	debris
dentistry3000-777	intensity
dentistry3000-777	root
dentistry3000-777	file
dentistry3000-777	protaper
dentistry3000-777	patients
dentistry3000-777	trial
dentistry3000-777	edm
dentistry3000-777	study