title: Application of FDM three-dimensional printing technology in the digital manufacture of custom edentulous mandible trays.
abstract: The objective was to establish and evaluate a method for manufacture of custom trays for edentulous jaws using computer aided design and fused deposition modeling (FDM) technologies. A digital method for design the custom trays for edentulous jaws was established. The tissue surface data of ten standard mandibular edentulous plaster models, which was used to design the digital custom tray in a reverse engineering software, were obtained using a 3D scanner. The designed tray was printed by a 3D FDM printing device. Another ten hand-made custom trays were produced as control. The 3-dimentional surface data of models and custom trays was scanned to evaluate the accuracy of reserved impression space, while the difference between digitally made trays and hand-made trays were analyzed. The digitally made custom trays achieved a good matching with the mandibular model, showing higher accuracy than the hand-made ones. There was no significant difference of the reserved space between different models and its matched digitally made trays. With 3D scanning, CAD and FDM technology, an efficient method of custom tray production was established, which achieved a high reproducibility and accuracy.
authors.affiliation: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology &National Engineering Laboratory for Digital and Material Technology of Stomatology &Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health.
authors.forename: Hu
authors.initials: H
authors.lastname: Chen
authors.affiliation: Teaching and Research department of Prosthodontics, Peking University School and Hospital of Stomatology.
authors.forename: Xu
authors.initials: X
authors.lastname: Yang
authors.affiliation: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology &National Engineering Laboratory for Digital and Material Technology of Stomatology &Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health.
authors.forename: Litong
authors.initials: L
authors.lastname: Chen
authors.affiliation: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology &National Engineering Laboratory for Digital and Material Technology of Stomatology &Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology &National Engineering Laboratory for Digital and Material Technology of Stomatology &Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health.
authors.forename: Yuchun
authors.initials: Y
authors.lastname: Sun
mesh_terms: D017076:Computer-Aided Design; D006801:Humans; D007568:Jaw; D066330:Printing, Three-Dimensional; D013499:Surface Properties