The scientific concept underlying fp involves the application of microscopic beams of pixelated light, which induce small, focal zones of tissue injury. Because the pixelated zones of treatment spare the surrounding normal tissue , re-epithelialization occurs at a significantly faster pace. The tissue injury created with fp stimulates the process of collagen remodeling and deposition and promotes elastic tissue formation. These molecular changes are postulated to be responsible for the clinical improvements seen with fp.
Classification of fractional technology
There are broadly two types of fractional lasers :
1. Non-ablative fractional laser
2. Ablative fractional laser
Palomar Medical Technologies Inc..(An example of Non - ablative)
This is a laser that has been widely used by us and can be used in a normal or single pulse mode. It has two tip size 15 mm for superficial indications like melasma and a 10 mm tip used for deeper pathologies like acne scars.
Fractional carbon dioxide lasers
As RF energy quickly diverges with increasing distance from the delivering electrode, it is possible to generate a spatially confined RF generated thermal injury only within the tissue directly adjacent to the tip of needle electrode.