Destruction of bacterials, periimplantitis, infections, root channel infections – Photo Dynamic Therapy
| Indication |
Joule cm2 |
Frequency |
Treeatments |
| Destruction of bacterials |
8 - 10 |
|
1 |
 |
X |
Apply toluidine blue or tolonium chloride and irradiate the cavity/root
channel directly with the laser using a special dental applicator,
fiber optic. |
 |
|
For disinfection, the laser is used in combination with special drugs, for the so called Photo Dynamic Therapy (PDT) or in this case Photo Dynamic Disinfection (PDD).
The PDT became available for use in both caries and infections of the soft tissue, endodontics.
Principle of function:
- The photosensitiser molecules attach to the membrane of the bacteria.
-
Irradiation with light at a specific wavelength (670-690 nm) matched to the peak absorption of the photosensitiser leads to the production of singlet oxygen, which causes the bacterial cell wall to rupture, killing the bacteria.
Laboratory studies have shown that an important aspect of this system is that the two components when used independently of one another produce no effect on bacteria or on normal tissue. It is only the combination of photosensitiser and light which produces the effect on the bacteria.
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