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【Location】On the face，one finger-breadth anterosuperior to the mandible angle where the masseter m.is prominent in clenching the teeth.
【Manipulation Method】Puncture perpendicularly 0.3-0.5 cun，or puncture subcutaneously toward Dicang（ST 4）1.5-2 cun.
【Indications】Deviated mouth，lockjaw，toothache，swelling in the cheek.
【Stratified anatomy】（Fig.1-17）
（1）Skin The skin is distributed by great auricular n.
（2）Subcutaneous tissue There are branches of great auricular n.and marginal mandibular of facial n..
（3）Masseter The masseter is located in the deep surface of lateral ramus of mandible superficial fascia.
The deep surface of the acupoint is mandible.