van der Meer W Joerd, Vissink Arjan, Ren Yijin
J Am Dent Assoc. 2016 Apr;147(4):288-91. doi: 10.1016/j.adaj.2015.11.018. Epub 2016 Feb 5.
The authors used a 3-dimensional (3D) printer and a bending robot to produce a multicomponent dental appliance to assess whether 3D digital models of the dentition are applicable for a full digital workflow.
The authors scanned a volunteer's dentition with an intraoral scanner (Lava Chairside Oral Scanner C.O.S., 3M). A digital impression was used to design 2 multicomponent orthodontic appliances. Biocompatible acrylic baseplates were produced with the aid of a 3D printer. The metal springs and clasps were produced by a bending robot. The fit of the 2 appliances was assessed by 2 experienced orthodontists.
The authors assessed both orthodontic appliances with the volunteer's dentition and found the fit to be excellent.
Clinicians can fully produce a multicomponent dental appliance consisting of both an acrylic baseplate and other parts, such as clasps, springs, or screws, using a digital workflow process without the need for a physical model of the patient's dentition.
Plaster models can be superfluous for orthodontic treatment as digital models can be used in all phases of a full digital workflow in orthodontics. The arduous task of making a multicomponent dental appliance that involves bending wires can possibly be replaced by a computer, design software, a 3D printer, and a bending robot.
作者使用三维（3D）打印机和弯曲机器人制作了一种多部件牙科矫治器，以评估牙列的3D数字模型是否适用于全数字工作流程。
作者使用口腔内扫描仪（3M公司的Lava椅旁口腔扫描仪C.O.S.）对一名志愿者的牙列进行扫描。使用数字印模设计了2种多部件正畸矫治器。借助3D打印机制作了生物相容性丙烯酸基托。金属弹簧和卡环由弯曲机器人制作。由2名经验丰富的正畸医生评估这2种矫治器的贴合度。
作者用志愿者的牙列对两种正畸矫治器进行了评估，发现贴合度极佳。
临床医生可以使用数字工作流程完全制作出一种由丙烯酸基托和其他部件（如卡环、弹簧或螺钉）组成的多部件牙科矫治器，而无需患者牙列的物理模型。
对于正畸治疗来说，石膏模型可能是多余的，因为数字模型可用于正畸全数字工作流程的所有阶段。制作涉及弯制钢丝的多部件牙科矫治器这项艰巨任务可能会被计算机、设计软件、3D打印机和弯曲机器人所取代。
