Apart from 3D printing, the direct fabrication of biomedical devices based on tough hydrogels has been the subject of multiple studies. This involves the creation of a biomedical tool based on tough hydrogel architectures that is not used for tissue engineering but to facilitate operation or postoperative care. The previous examples on vascular embolization and stents demonstrate this well, and other reports have used tough hydrogels as wound sutures, tubular graspers, or for intraoral ultrasound imaging. To improve intraoral ultrasound imaging of dento-periodontal tissues, PAAm/Alg-Ca 2+ double networks were used as couplant gel pads between transducer and oral tissue. The en-hanced mechanical properties of the tough hydrogels make them ideal targets to replace current commercial waterunstable, and rather brittle gel pads in an attempt to rival conventional x-ray examinations.