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GV-28 Gum Intersection

龈交 〔齦交〕 yín jiāo

Alternate names: 断交 duàn jiāo, Extremity Intersection; 龈缝筋中 yín fèng jīn zhōng, Gum Crevice Sinew Center

Channel: GV, governing () vessel

Modern location: An acupoint located under the upper lip, on the maxillary gum immediately below the attachment of the frenulum.

Classical location: In the cleft above the teeth. From The Golden Mirror of Medicine (医宗金鑑 yī zōng jīn jiàn)

Local anatomy: The superior labial artery and vein. The branch of the superior alveolar nerve.

Action: Diffuses the lung and frees the orifices; clears heat and drains fire; brightens the eyes and relieves itching.

Modern indications: Mania and withdrawal; painful swelling of the gums; deep-source nasal congestion.

Classical indications: Nasal polyp inhibiting respiration; pain along the center line of the face; sniveling and nosebleed; excessive tearing; redness, pain, and itching of the outer canthus; periodontal gān with swelling and pain; pain and bleeding of the teeth or gums; facial sores and enduring lichen (xiǎn) in children; red facial complexion; heart vexation.

Needle stimulus: Needling: 0.1‒0.3 cùn upward oblique insertion or bleed with three-edged needle.

Warning: Moxa contraindicated.

Point groups: Intersection point (jiāo huì xué) of the governing vessel and stomach channel.

Point name meaning:

This point is located on the gums where they join with the frenulum of the upper lip. It is also the intersection (jiāo huì) point of the conception and governing vessels and the stomach channel, giving it the name Gum Intersection.

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