SmileDirectClub, a Warby Parker-style company that sells 3D-printed teeth aligners online that are typically cheaper than braces, has asked some customers dissatisfied with the product to sign extremely restrictive nondisclosure agreements that stifle them from saying anything negative about the company, according to a report from The New York Times published on Wednesday.
[Source: Teeth aligning company SmileDirectClub is using NDAs to stifle bad reviews online]
