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ePaper created 2018-03-13, 09:28:55 | version 1.38.0
| industry report Fig. 5 Fig. 5: Leone’s Transfer Bite system. tist can later change the positioning height, the torque, the tip and the rotation to obtain an absolutely individ- ualised and strategic positioning of the brackets for the case (Fig. 1). Once the ideal position of the brackets had been obtained, we used the Maestro 3D software to obtain a file that allowed the 3-D printing of the model in which, in the left hemi-arch, the brackets were integrated to be able to use it to produce the conventional thermoformed clear trays that would contain the brackets to be placed in the mouth. In the right hemi-arch, using the software, we designed a Transfer Bite that permitted precise position- ing of the brackets. The Transfer Bite is made of biocom- patible material and is produced using a high-precision 3-D printer according to specific parameters. Our split-mouth clinical investigation protocol was accepted by the American Association of Orthodon- tists committee for the table clinics that we presented at the 2017 annual congress in San Diego in the US (Fig. 2). This procedure clearly demonstrated the limita- tions of the conventional two-tray technique: inconsistent accuracy, an excess of composite around the base of the bracket that cannot be removed during the bonding step, and difficulty in removing the thermo-printed sup- port (Figs. 3 & 4). Our experience of using the Transfer Bite system on 12 patients allows us to confirm that this new indirect bonding method is simpler, easier and more accurate than the conventional method. Furthermore, it proved to be a less operator-dependent technique, allowing even less- experienced clinicians to achieve optimal results. about Dr Arturo Fortini is a specialist in orthodontics and in private practice in Florence in Italy. He is a visiting professor at the Univer- sity of Cagliari and University of Rome Tor Vergata, both in Italy. He can be contacted at arturofortini@gmail.com. Dr Elisabetta Carli is a specialist in orthodontics and in private practice in Fivizzano in Italy. She can be contacted at elisabetta.carli@gmail.com. Dr Alvise Caburlotto is a specialist in orthodontics and in private practice in Venice in Italy. He can be contacted at a.caburlotto@gmail.com. The Transfer Bite system with positioning devices was found to be better because it allows the clinician to have a complete view of the base of the brackets, optimis- ing the removal of excess composite (Fig. 5). In addition, the Transfer Bite, compared with the thermoformed trays, has greater stability on the dental arches, with an even better precision result, and aids the dentist in reposition- ing the brackets in a detachment case. Dr Giulia Fortini is a specialist in orthodontics and in private practice in Florence. She can be contacted at giulia.fortini2@gmail.com. Dr Francesca Scilla Smith is a specialist in orthodontics at Nova Southeastern University, College of Dental Medicine, in Fort Lauderdale in the US. She can be contacted at dr.francescasmith@gmail.com. 40 ortho 1 2018