RT Book, Section
A1 Tannous, Zeina
A1 Avram, Mathew M.
A1 Tsao, Sandy
A1 Avram, Marc R.
SR Print(0)
ID 1175821581
T1 Ablative Laser Resurfacing
T2 Color Atlas of Cosmetic Dermatology, 2e
YR 2011
FD 2011
PB The McGraw-Hill Companies, Inc.
PP New York, NY
SN 9780071635035
LK dermatology.mhmedical.com/content.aspx?aid=1175821581
RD 2023/03/31
AB Utilizing  the  principles  of  selective  photothermolysis,  ablative  removal  of  skin  in  a  precisely  controlled  fashion  with  resultant  minimal  surrounding  thermal  damage  is  achieved.  The  depth  of  tissue  penetration  is  dependent  on  selective  absorption  of  water.  Immediate  tissue  effects  are  dependent  on  the  spot  size  and  power  utilized  as  well  as  the  speed  of  treatment  administration.  The  time  of  laser–tissue  interaction  is  the  critical  factor  for  residual  thermal  damage.  Epidermal  obliteration  and(or  partial  ablation  or  coagulation  of  the  upper  dermis  is  the  endpoint.  Re-epithelialization  results  from  the  migration  of  cells  that  arise  from  surrounding  follicular  adnexae.  Normal  compact  collagen  and  elastic  fibers  replace  the  amorphous  elastotic  dermal  components,  and  normal,  well-organized  epithelial  cells  replace  the  disorganized  photodamaged  epidermis.  Collagen  remodeling  is  noted  both  intraoperatively  via  thermal  shrinkage  and  contraction  and  postoperatively  within  the  remodeling  phase  of  wound  healing.