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Comparison of Needle vs. Cannula for Filler Injections.
| Instrument | Advantages | Disadvantages | Recommended Use |
|---|---|---|---|
| Needle | Precise delivery, Easier aspiration | Higher risk of vascular penetration | Deep injections in low-risk areas |
| Cannula | Blunt tip reduces vascular injury | Less precise, Possible inaccurate placement | Superficial injections in high-risk areas |
