Du28 Yinjiao ( Vg28 )

Location At the junction of the gum and the frenulum of the upper lip .

Indications Mental disorders , pain and swelling of the gums , rhinorrhea .

Method Puncture obliquely upward - 0 . 1 - 0 . 2 inch , or prick to cause bleeding .

Vasculature The superior labial artery and vein .

Innervation The branch of the superior alveolar nerve .