Dental(齿音) Dental sounds involve the upper teeth as the passive articulator. The active articulator may be either the tongue tip or(usually) the tongue blade diacritic symbols can be used if it matters which Extreme lamino-dental sounds are often called interdental. English interdental sounds include [W and t i 2021/2/232021/2/23 11 Dental （齿音） • Dental sounds involve the upper teeth as the passive articulator. The active articulator may be either the tongue tip or (usually) the tongue blade -- diacritic symbols can be used if it matters which. Extreme lamino-dental sounds are often called interdental. English interdental sounds include [W ] and [T ]