Objectives: Lip fill with hyaluronic acid (HÁ) is one of the most sought after injectable procedures for face beautification. However, due to the complicated and variable anatomical and vascular characteristics of the lips, the procedure carries great risks in relation to unsightly results and vascular complications.
In the last year we made 20 lip fillers (LF), using a systematization that we call K.I.S.S. technique through which the injection is made through cannulas with a blunt tip, using specific anatomical labial parameters, with good results and keeping the injections simple and safe.
Introduction: The attractiveness of the lips is determined by a combination of three factors:
1 - proportion between upper (UL) and lower lips (LL);
2 - definition of filter columns (FC), ccupid's bow (CB) and lip contour;
3 - volume.
To facilitate our evaluation, knowing that the measurements of lips components are variable, we used the following parameters:
- FC longer than 1.5 cm are considered long and should not be filled in;
- UL smaller than 0.8 cm and LL than 0.9 cm are considered thin and are candidates for filling;
- UL should be more anteriorly projected (2mm), while LL should be 20% larger.
Materials / method: In the last year, we performed lip fillers on 20 women between the ages of 25 and 45, following the K.I.S.S. technique characterized by the use of a 25 G cannula with a blunt tip to inject 1ml of HA 20mg/ml by retroinjection in the subcutaneous tissue of the vermilion of the lips, always respecting the vascular safety margin of 5mm above the red mucosal junction, where the presence of the supplying arteries is rarer.
The entry ports with a 22G needle were performed in the FC in the UL, 5.0mm above the Glogau Klein point and in points parallel to the nasal wings in the contour of LL.
Results: We named 3 anatomical sites of injection in UL as Kiss 1, 2 and 3 and 2 sites in LL Kiss 4 and 5.
- K1: diagonal vector (DV) directed to the medial tubercle (TB): improves UL projection and the contour of the CB - it is the area with the highest vascular risk;
- K2: 2 almost perpendicular vectors, directed to the lateral TB: increase projection and the vertical diameter, support CB;
- K3: DV directed to the lateral area of UL, improves volume but mainly contour;
- K4: 2 medially directed DV, one for the TB and other inferior for contour;
- K5: directed to comissure, for supporting.
Conclusion: All 20 injected patients had undergone previous lip filling with conventional needle techniques and 19 reported satisfaction with the results and a more pleasant post-procedure, with less swelling and bruising. One of them told she did prefer needle injection.
Although we can't achieve with cannulas, the precision we achieve when using needles, we could with K.I.S.S. tecnique to improve the proportion, definition and volume of the lips, in order to leave the injector and patients satisfied and in a simple, safe and reproducible way.
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