Answer:

FLOSS

Answer	Crossword Clue
FLOSS	Strand for cleaning
FLOSS	Long line at the dentist?
FLOSS	Dentist's urging

FLOSS	Embroidery filaments
FLOSS	Dentist's admonition
FLOSS	Dentist's reminder
FLOSS	Oral-B product
FLOSS	Dental thread
FLOSS	Dentist's advice
FLOSS	Brush partner
FLOSS	Dentist's suggestion

FLOSS	Dentist's recommendation
FLOSS	Clean with string
FLOSS	Dental cleaner
FLOSS	Dislodge particles
FLOSS	Dentist's exhortation
FLOSS	Eliot's "The Mill on the ..."
FLOSS	Dentist's advise
FLOSS	Dentist's directive

FLOSS	Dentist's instruction
FLOSS	Dental string
FLOSS	Dental device
FLOSS	Dentist's direction
FLOSS	Low-tech dental device
FLOSS	Dental hygienist's advice
FLOSS	Dental stuff
FLOSS	Dental .. (tooth-cleaning thread)

FLOSS	Periodontist's recommendation
FLOSS	Hygienist's advice
FLOSS	Medicine cabinet item
FLOSS	Where Tom and Maggie Tulliver drown.
FLOSS	Maggie Tulliver's river.
FLOSS	Covering of a silkworm's cocoon.
FLOSS	"The Mill on the ...."
FLOSS	Fibers of silk.

FLOSS	Tom Tulliver's river.
FLOSS	Silk fibers.
FLOSS	Embroidery silk.
FLOSS	Silk thread.
FLOSS	Silk of Indian corn.