id	keyword
dentistry3000-921	irrigation
dentistry3000-921	canal
dentistry3000-921	study
dentistry3000-921	activation
dentistry3000-921	techniques
dentistry3000-921	root
dentistry3000-921	respondents
dentistry3000-921	participants
dentistry3000-921	practitioners
dentistry3000-921	dental
dentistry3000-921	methods
dentistry3000-921	systems
dentistry3000-921	ultrasonic