Procedure and results on lower face and neck rejuvenation using a temperature-controlled bipolar fractional...

Radiofrequency (RF) devices which are under ongoing technological development, are being increasingly used for minimally invasive rejuvenation procedures. The objective is to evaluate the efficacy and safety of a procedure that uses bipolar RF microneedles for rejuvenation of the lower face and neck.

A prospective clinical and histological study, with a blind evaluation of the results by independent evaluators. Twenty-four women over 40 years of age were evaluated, who were treated with bipolar RF equipment (Profound™; Candela Medical) during a single session. Biopsy samples were taken from 12 patients. Microscopy images related to the immediate effects of RF and the changes observed 4 months after treatment were examined. The clinical results were established through questionnaires and by comparing before and after photographs. Mean (m), range (R), and percentage (%) values were calculated.

Immediate lysis of adipocytes in submental fat was observed, as well as an increase in the density and compaction of elastin and collagen fibers 4 months later. The average percentage of reduction in fine lines, wrinkles, furrows, and folds was around 30%, while the average improvement of the neck silhouette was around 20%. Photographic signs of aging improved significantly, both in the face (p = 0.0007) and the neck (p = 0.002). Patient and therapist satisfaction with the results was 8.3/10 (R = 3-10) and 9.3/10 (R = 8-10), respectively. The adverse effects were mild and temporary and no complications were observed.

The procedure is safe, clinically effective, and satisfactory for patients.