ISO 9168:2009适用于实现牙科设备软管和牙科手机之间的可靠互换性。 ISO 9168:2009规定了四种类型的软管连接器，用于气动牙科手机和牙科单元的柔性软管之间，这些软管为手机供水、供气和照明，并提供排气。

ISO 9168:2009 is applicable for achieving reliable interchangeability between hoses from dental units and dental handpieces. ISO 9168:2009 specifies four types of hose connector for use between air driven dental handpieces and the flexible hoses of the dental unit which supply the handpieces with water, air and light, and provide for exhaust.