title: Rapid tooling method for soft customized removable oral appliances.
abstract: Traditionally oral appliances i.e. removable orthodontic appliances, bite splints and snoring / sleep apnea appliances are made with alginate impressions and wax registrations. Our aim was to describe the process of manufacturing customized oral appliances with a new technique i.e. rapid tooling method. The appliance should ideally be custom made to match the teeth. An orthodontic patient, scheduled for conventional orthodontic treatment, served as a study subject. After a precise clinical and radiographic examination, the approach was to digitize the patient's dental arches and then to correct them virtually by computer. Additive manufacturing was then used to fabricate a mould for a soft customized appliance. The mould was manufactured using stereolithography from Somos ProtoGen O-XT 18420 material. Casting material for the mould to obtain the final appliance was silicone. As a result we managed to create a customized soft orthodontic appliance. Also, the accuracy of the method was found to be adequate. Two versions of the described device were manufactured: one with small and one with moderate orthodontic force. The study person also gave information on the subjective patient adaptation aspects of the oral appliance.
authors.affiliation: Department of Industrial Engineering and Management, BIT Research Centre, Aalto University, School of Science, Espoo, Finland.
authors.forename: Mika
authors.initials: M
authors.lastname: Salmi
authors.forename: Jukka
authors.initials: J
authors.lastname: Tuomi
authors.forename: Rauno
authors.initials: R
authors.lastname: Sirkkanen
authors.forename: Tuula
authors.initials: T
authors.lastname: Ingman
authors.forename: Antti
authors.initials: A
authors.lastname: Mäkitie