Orthodontic bracket slot dimensions as measured from entire bracket series.

ABSTRACT Objective:  To measure the slot dimensions of an entire series of metal orthodontic brackets. Materials and Methods:  Ten bracket series approximating five complete sets of brackets each were imaged and measured. Descriptive statistics were generated. Results:  Slot dimension varied significantly from series to series as well as within the series themselves. About one-third of the brackets would not accommodate a full-size wire, and 15% to 20% are 0.001 inches or larger than the nominal advertised size. Conclusion:  The clinician is unlikely to have on hand complete sets (upper and lower 5-5) of ideal brackets and should both expect and be able to be accommodate tooth movement through wire bending in three planes of space to overcome any bracket deficiencies.