The latest improvements in orthodontic materials need an extremely accurate placement of brackets on the teeth. Such degree of precision, hardly obtainable with normal technique, led to develop many indirect techniques of bracket bonding: they had however many defects, limiting the clinical use such as: 1) impossibility to remove accurately the bonding excess from the tooth; 2) difficulty to control the accuracy of the applied system. The availability of brackets with individual height measuring devices made it possible to develop a new technique, actually in use at the Orthodontic Department at the Boston University directed by prof. A. Gianelly. The description of the technique shows the simplicity of the needed steps. The kind of acrylic splint allows to: 1) verify the accuracy of the system during the application; 2) absolutely control excess of bonding used during brackets application on the teeth. The advantages deriving from the use of this technique are principally: 1) the precision of placement of brackets on the teeth 2) the shortening of the time needed with the patient in the dental office.