๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
Fillers
Fillers
HA fillers with high or medium viscosity are reasonable options. Filler placement should be aimed toward the superficial subcutaneous compartment of the lateral cheek fat pad (Fi g. 75-12). A 30-gauge or smaller needle may be used. Blunt cannulas (1ยฝ or 2 in, 25 gauge) are also recommended. Some common entry points for cannulas include just anterior to the tragus, the anterior border of the masseter on a line drawn from the tragus to the nasal ala, and just above the angle of the mandible and anterior to the earlobe. Filler can be injected with fanning or cross-hatching techniques. Earlobe volume can also be enhanced with 30-gauge needle injections with similar HA products
used for the preauricular area. This can be done by holding the earlobe between the thumb and index finger of the nondominant hand for stability and injecting around the ear-piercing hole.91
Precautions, pearls, and pitfalls Filler placement in the superficial subcutaneous lateral cheek fat pad compartment avoids injury to the more deeply located facial nerve, superficial temporal artery/vein, transverse artery/vein, and auriculotemporal nerve.
The superficial temporal artery and vein and auriculotemporal nerve are situated lateral to zygomatic process, placing them more superficial on this zone. Injectors should pay close attention when approaching the zygomatic process by palpating for vessels and preinjection aspiration.