3. Dental (/th/, /dh/):
حيث يكون اللسان مابين الاسنان السفليه والعلوية
Dental: Sounds that are made by placing the tongue against the teeth are dentals. The main dentals in English are the [th] of thing or the [dh] of though, which are made by placing the tongue behind the teeth with the tip slightly between the teeth.
produced by constriction between tongue tip and upper teeth (sometimes tongue tip is closer to alveolar ridge)
in English, all dental phonemes are fricatives
Ex: /th/ teeth, thin the tip of the tongue touches the upper teeth.
/dh/ then, the, there the blade of the tongue touches the upper teeth.