id	keyword
dentistry3000-752	periodontal
dentistry3000-752	treatment
dentistry3000-752	students
dentistry3000-752	treatment needs
dentistry3000-752	dental
dentistry3000-752	health
dentistry3000-752	study
dentistry3000-752	status
dentistry3000-752	university
dentistry3000-752	cpitn
dentistry3000-752	index
dentistry3000-752	kufa
dentistry3000-752	community
dentistry3000-752	cross