【 文献重点摘要 】
 

Background: The impression that cheek filling results in longitudinal shortening (“lift”) of the skin and elevation of the nasolabial crease or nasolabial fold has become common within the facial injection community but remains unsubstantiated.

Methods: In this study, 77 patients were evaluated before and after injection of the cheeks with a hyaluronic acid filler using a three-dimensional camera system.

Results: A constant pattern of skin expansion away from the center of the injection and perpendicular to the surface of the skin was observed. A subgroup of 37 patients without differences in their preinjection and postinjection facial expression were analyzed by direct comparison and failed to demonstrate lateral traction (or “pull”) on the intervening skin from the cheek injection site to the nasolabial crease. Furthermore, there was no photographic difference in the nasolabial fold or nasolabial crease. The only patients who demonstrated photographic improvement of the medial face were those who had filler placed directly in the transition between the lateral nasolabial fold and cheek (nasojugal crease).

Conclusions: Filling the cheek with 3 cc of volume does not create traction forces or move the skin between the site of injection and the nasolabial crease. It is likely that expanding the nasojugal crease is the direct visual cue that leads to perceived improvement in the nasolabial fold.

背景：脸颊填充导致皮肤纵向缩短(“提举”)和鼻唇皱褶或鼻唇皱褶抬高的印象在面部注射社区中已变得普遍，但仍未得到证实。

方法：在这项研究中，77名患者在注射透明质酸填充剂前后使用三维摄像系统进行评估。

结果：在远离注射中心、垂直于皮肤表面的方向上观察到恒定的皮肤扩张模式。对37例注射前后面部表情无差异的患者进行了直接对照分析，结果显示从面颊注射部位到鼻唇皱纹的中间皮肤没有受到侧向牵引(或“牵引”)。此外，在鼻唇皱褶或鼻唇皱褶方面没有照片上的差异。唯一显示内侧面部照相改善的患者是那些直接在鼻唇外侧皱褶和面颊(鼻颈皱褶)之间的过渡处放置填充物的患者。

结论：用3毫升的体积填充脸颊不会产生牵引力，也不会使皮肤在注射部位和鼻唇皱纹之间移动。扩大鼻颈折痕很可能是直接的视觉线索，导致鼻唇皱褶的感觉改善。