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A. Purpose or rationale for presenting at this meeting:
Only mild improvement in neck rhytides may be achieved with laser resurfacing because
treatment depth is limited by the skin of the neck and few appendageal structures-
thus leading to greater risk of wound healing delays and scarring. The goal of this
study was to evaluate the safety and efficacy of a 1320nm Nd:YAG laser with cryogen
cooling device in the treatment of neck rhytides.
B. (If a study) Statement of research design or methodology:
Method: 11 Patients were treated on one side of their anterior neck from base of
neck to jawline with a 1320nm Nd:YAG laser with cryogen cooling device (CoolTouch
Corp, Roseville, CA). Two passes with the laser was performed at three week intervals
for a total of 4 treatments. Laser settings were as follows: 28-36 J/cm2,
cryogen cooling duration of 20-30ms with a laser delay of 30-40ms. Fluence
was set so that epidermal temperatures reached 40-45°C. Biopsies were taken
prior to treatment and at 3 months after last treatment. Optical profilometry measurements
were made before and after 4 treatments. After 4 treatments to one side of the neck,
the opposite side was treated for 4 treatments at 3 week intervals, during which
time observations were continued on the initial treatment side.
C. Summary of results or findings:
Results: All patients showed improvement. Average improvement was 32%- 3 patients
had 50-75%, 7 had 25-50% and 1 had <25% improvement. Clinical improvement was
noted in skin tightning and in texture with the greatest improvement observed in
fine textural irregularities/rhytides. One patient reported a blister following
a treatment, but this did not result in a scar. Several patients reported asymptomatic
firm papules on the neck occuring 1-2 days after a treatment and resolving in 3-4
days with no sequelae. Optical profilometry measurements indicated improved
skin texture and decreased surface lines.
D. Statement of conclusions reached:
Conclusion: The 1320 Nd:YAG non-ablative laser is a safe treatment for neck rhytides
and can result in significant improvement in fine textural changes and fine rhytides
of the neck and may also induce mild tightening of the skin of the neck
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