id	keyword
bjos-8670735	pandemic
bjos-8670735	dentistry
bjos-8670735	students
bjos-8670735	practice
bjos-8670735	teaching
bjos-8670735	covid-19
bjos-8670735	distance
bjos-8670735	learning
bjos-8670735	activities
bjos-8670735	operative
bjos-8670735	education