| Abstrakt: |
Background: Injection cosmetics have become popular in recent years. The nasolabial fold is one of the most important and dangerous regions in the midface, and its three-dimensional relationship with the facial artery remains unclear. Methods: Fifty-two cadavers infused with lead oxide contrast medium via the external carotid arteries were scanned by computed tomography (CT). The three-dimensional model was reconstructed using Mimics and Origin software, and the relevant data were calculated using validated algorithms. Results: There were three facial artery types according to its course in relation to the nasolabial fold. In the most common type, accounting for 83.7% of specimens, the facial artery evolves into an angular artery, with a horizontal distance between facial artery and nasolabial fold of − 1.90 ± 2.40, − 3.90 ± 2.95, − 5.18 ± 3.42, − 5.59 ± 3.53, − 5.59 ± 3.83, − 6.07 ± 4.10, − 6.92 ± 3.70, − 6.79 ± 3.37, − 4.52 ± 3.20, and − 2.76 ± 3.60 (mm) from the nasal ala to the oral commissure and a vertical distance of − 4.03 ± 2.56, − 3.27 ± 2.27, − 2.81 ± 2.57, − 2.1 ± 2.64, − 1.5 ± 3.32, − 0.71 ± 3.99, 0.92 ± 4.43, 0.4 ± 5.31, − 4.14 ± 5.14, − 7.05 ± 4.74 (mm). Conclusions: The facial artery is vulnerable to damage when injecting filler in the nasolabial fold. For the upper 1/3 of the nasolabial fold, the supraperiosteal layer is recommended for injection, while for the lower 2/3 of the nasolabial fold, the dermal layer along the nasolabial fold is recommended. Level of Evidence IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors http://www.springer.com/00266. [ABSTRACT FROM AUTHOR] |
Full text from SpringerLink