To our knowledge, it is for the first time that a PCLbased
dermal filler has been compared with a NASHAbased
filler for efficacy and safety in the treatment of
NLFs. Efficacy of the fillers was determined using the
WSRS and GAIS rating system.
Results from our GAIS ratings show that the PCLbased
dermal filler has greater esthetic improvements
in the treatment of NLFs over the NASHA-based filler
at 6, 9, and 12 months after initial treatment. The
largest improvements of the PCL-treated NLFs over the
NASHA-treated NLFs were seen at month 9 and 12.
At these time points, results showed 41% (9 months
post-treatment) and 20% (12 months post-treatment)
TMI for the NLFs treated with the PCL-based dermal
filler while at the same time points, 0% TMI in GAIS
scores were found for the NASHA-treated NLFs. These
results indicate that the PCL-based dermal filler has
prolonged esthetic improvement over this commonly
used NASHA-based dermal fillers.
In addition, similar results were found with our
obtained mean WSRS scores showing significantly
higher esthetic improvement for PCL-treated NLFs
compared with NASHA-treated NLFs at 6, 9, and
12 months after initial treatment.