Self-etching primers: is prophylactic pumicing necessary? A randomized clinical trial.

The purpose of this clinical trial was to determine whether pumice prophylaxis is required before the use of a self-etching primer (SEP). A total of 30 patients undergoing treatment with full upper and lower fixed appliances were recruited into this randomized cross-mouth controlled trial. In all cases, stainless steel orthodontic brackets were bonded using Transbondtrade mark XT adhesive after pretreatment of the enamel surface using a new SEP.