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3D Printed Customized Facemask for Maxillary Protraction in the Early Treatment of a Class III Malocclusion: Proof-of-Concept Clinical Case
Authors:Lorenzo Franchi  Alessandro Vichi  Patrizia Marti  Flavio Lampus  Simone Guercio  Annamaria Recupero  Veronica Giuntini  Cecilia Goracci
Affiliation:1.Department of Experimental and Clinical Medicine, University of Florence, 50127 Florence, Italy; (L.F.); (V.G.);2.Dental Academy, University of Portsmouth, Portsmouth PO1 2QG, UK;3.Santa Chiara Fab Lab, Department of Social Political and Cognitive Sciences, University of Siena, 53100 Siena, Italy; (P.M.); (F.L.); (S.G.); (A.R.);4.Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
Abstract:In order to improve fit and comfort, a maxillary protraction facemask customized to the patient’s anatomy was produced by means of 3D face scanning, digital design and additive manufacturing. An 8-year-old patient in need of early treatment for the Class III malocclusion received a rapid palatal expander and a Petit-type facemask, whose components were digitally designed on a 3D scan of the patient’s face. For face scanning, the iPad Pro 2018 tablet (Apple, Cupertino, CA, USA) with the Bellus3D DentalPro application (Bellus3D, Campbell, CA, USA) was used. Facemask components were modelled with 3D Blender software. The rests were 3D printed in BioMed Clear biocompatible resin (Formlabs, Somerville, MA, USA), and the bar in stainless steel. For greater comfort, the internal surface of the rests was lined with a polymer gel pad (Silipos, Niagara Falls, NY, USA). The manufacturing procedure of the customized facemask is patented. The patient wore the facemask at night for a period of 9 months. The patient’s experience was evaluated with a questionnaire at 1 week, 3, 6, and 10 months of treatment. The customized facemask was well accepted by the patient and obtained the expected treatment outcome. Furthermore, 3D face scanning, 3D modelling and 3D printing allow for the manufacturing of customized facemasks with improved fit and comfort, favoring patient compliance and treatment success.
Keywords:maxillary protraction facemask   face scanning   3D printing   customization   Class III malocclusion
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