Dental arch with attached triangular structures

The image depicts a human mouth model with a full set of teeth. The teeth are white and exhibit a standard anatomical arrangement, featuring incisors, canines, premolars, and molars. Attached to several teeth are triangular, metallic-gray structures, seemingly affixed by cylindrical components resembling screws or nails. A pink tongue is partially visible, extending slightly from the lower left portion of the mouth.