linguadental consonant
Technical term in phonetics for a consonant articulated with the tongue against the upper teeth.
A linguadental consonant is a sound made with the tongue and teeth.
歯音 is a broader term for dental consonants; 舌歯音 specifies the tongue's involvement.
Compound of 舌 (tongue), 歯 (tooth), and 音 (sound), directly describing the articulation.