Abstract Purpose To reduce radiation doses to the tongue. a patient-specific semi-customized tongue displacement device (SCTDD) was developed using a 3D printer (3DP) for head and neck (H&N) radiation therapy (RT). Dosimetric characteristics of the SCTDD were compared with those of a standard mouthpiece (SMP). Materials and methods The SCTDD consists of three parts: a mouthpiece. https://www.bekindtopets.com/deal-find-Equi-Jec-6-best-super/