, which valued it at nearly $9bn . However, SmileDirectClub lost more than $74m in 2018, as its sales nearly tripled to $423m from a year earlier.
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The dentistry company causing smiles to turn into frowns
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From life-changing teeth problems to lengthy battles for refunds, patrons of SmileDirectClub are starting to realise they may have bitten off more than they can chew, say Erin Griffith and Peter Eavis