Light is measured in wavelengths. Dental laser wavelengths are
Diodes 830-1,064nm,
Erbium 2,790-2,940nm,
CO2 9,300-10,600nm.
As the chart below,
Diode Laser has extended absorption depth in water-rich soft tissue.
Yag Er Laser has very short absorption depth in water-rich soft tissue.
CO2 Laser has short absorption depth in water-rich soft tissue.
After all,
Diode Laser is good at deep soft tissue,
Yag Er Laser is good at surface soft tissue,
CO2 Laser is good at medial soft tissue.
In Root canal treatment, Diode laser can provide good coagulation deep in the root canal to prevent the apex from bacteria.
