Coordinated metal and ceramic orthodontic bracket systems (100) allow a practitioner to insert one or more ceramic brackets (102, 104, 106, 108) into a metal bracket system (1001), replacing selected metal brackets (102&prime；, 1041, 106&prime；, 108&prime；) with ceramic brackets (102, 104, 106, 108), and vice-versa. Thus, both a ceramic bracket system (100) and a metal bracket system (1001) are provided, in which corresponding brackets of each system include substantially identical &ldquo；in-out&rdquo； slot floor cross-sectional thicknesses so that corresponding brackets are interchangeable with each other, without any need for compensating bends or later treatment to correct unintended buccal-lingual tooth movement.
