This is mold data to make silicone gum. Fit to my typodont dental model. https://www.cgtrader.com/3d-print-models/science/biology/base-and-gum-data-for-dental-anatomical-typodont https://www.cgtrader.com/3d-model-collections/dental-model-maxillary-and-mandibular-with-soft-tissue-version
Making the pink part in the thumbnail photos.