Seoul Choibyeonggi Dental Clinic performs National Health Insurance-covered oral examinations and scaling in Seoul. Both procedures are covered by National Health Insurance, yet the clinic explains other options and recommends paid treatment. It is possible to receive only the basic National Health Insurance treatment and leave. The clinic pushes uninsured treatment by citing materials and duration, and this sales practice of recommending uninsured treatment for procedures that can be covered by insurance is a drawback.