LAUSR

SUMMARY Documenting the complex three-dimensional cleft lip and palate malformation by plaster casts based on maxillary impressions is standard care. Presurgical orthopedic treatment also requires an impression. Digital impression-taking in patients with cleft lip and palate becomes feasible, but procurement costs still hinder clinical implementation. Individualized impression trays allow for a precise impression, limiting the airway risk. We present an open-source impression tray library with scalable impression trays not requiring 3D modeling knowledge. The cleft lip and palate impression tray library is accessible on Open Science Framework. Different shapes are available, and the tray size is selected based on the tuber distance. This allows 3D printing with biocompatible material at the point-of-care complying with local regulations. Our presented open-source cleft tray library offers a hybrid solution for cleft centers, pending the implementation of digital impression.