id	keyword
bjos-8670401	periodontal
bjos-8670401	probes
bjos-8670401	tip
bjos-8670401	doi
bjos-8670401	millimeter
bjos-8670401	measurements
bjos-8670401	types
bjos-8670401	diameter
bjos-8670401	pcp-12
bjos-8670401	unc
bjos-8670401	probing