Direct printed removable appliances: A new approach for the Twin-block appliance

Removable appliances are an important part of orthodontic treatment. The Twin-block is widely used for Class II correction. Traditionally, an impression, bite registration, and mounted plaster casts are required to fabricate the acrylic appliance, which usually requires a specialized laboratory. Thi...

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Bibliographic Details
Published in:American journal of orthodontics and dentofacial orthopedics 2022-07, Vol.162 (1), p.103-107
Main Authors: Graf, Simon, Tarraf, Nour Eldin, Vasudavan, Sivabalan
Format: Article
Language:English
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Summary:Removable appliances are an important part of orthodontic treatment. The Twin-block is widely used for Class II correction. Traditionally, an impression, bite registration, and mounted plaster casts are required to fabricate the acrylic appliance, which usually requires a specialized laboratory. This makes the process expensive and also time-consuming. This paper aims to present an innovative approach for the virtual design and direct printing of removable orthodontic appliances, particularly the Twin-block, that can be done in-office without the need for casts or a specialized laboratory. •Twin-block removable functional appliances are printed in-office on a desktop 3D printer.•Steps for virtual design and direct printing of a removable Twin-block appliance are shown.•Virtual design allows natural tooth undercuts to avoid metal clasps.•Bedding for metallic components can be factored in to add them.•Two patients were used as treatment possibilities, Class II/1 and Class II/2.
ISSN:0889-5406
1097-6752
DOI:10.1016/j.ajodo.2021.08.019