The Photodynamic Therapy in the dentistry
 

With the "MLT two in one“ diode laser we managed to unite the use possibilities of the diode laser technique with those of the “photo-dynamic therapy (PDT) in just one casing!

What is the photo-dynamic therapy?

The photo-dynamic therapy respectively “photo-activated chemotherapy” (PACT) is a photo-activated disinfection and very effective and gentle method which can be universally deployed in the mouth cave for germ disinfection (99,99 %), without side-effects and non-invasive!

The principle of this photo-activated disinfection is based on a light-induced, chemical process of mortification of bacteria. This destroys the cell walls of the bacteria and leads to the perishing of the germs. The photo-dynamic disinfection was developed in the course of a multiplicity of studies and was confirmed and recommended by international experts concerning its efficiency. Through combination of a harmless dye, that is used in the medicine since decades, with a mild laser light, also advanced or often treatment-resistant infections like caries, periodontosis, implant inflammations and root canal infections can be successfully fought with the photo-activated disinfection.

Fighting inflammations with light, without side-effects!

When is the PACT deployed?

In the cases of caries or parodontitis (periodontosis), inflammations at tooth implants or root canal infections we are talking about bacterial infections. Therefore the basis of the treatment of these illnesses is to remove the causal bacteria effectively and prevent another colonization. In earlier times disinfectants and antibiotics were frequently put in for this. Nowadays we can use the photo-activated chemotherapy (PACT), with which even especially problematic bacteria can be eliminated in a very gentle way for the body, just using dye and light.

Antibiotics can be waived by PACT many times!

Caries: Drilling out of decayed tooth substance can be considerably reduced and sometimes even avoided through the PACT treatment. Caries bacteria are destroyed with a security of 99,99 percent so that the caries no more progresses under a new filling or a crown .     Periodontosis: Until now often an antibiotic had to be administered accompanying to a medical tooth and root cleaning in the course of a periodontosis treatment. In many cases the solution today is PACT, without antibiotics and without side-effects.     Implant inflammations: Through bacteria, the tissue around the tooth implant can become inflamed. By means of PACT, these bacteria can be softly removed and an implant loss prevented.     Root canal infections: Many bacteria hide in edge niches of the root canals, in fine pores or little canals in the root canal walls or are simply resistant against the usual treatment procedures. By PACT, also problem germs are safely destroyed until the last corners of the root canal system. An effect, that one gets to feel in the truest sense of the word: A swift and complication-poor cure.

Using the photo-activated chemotherapy in the endodontics (case example):

The region that has to be disinfected (root canal) is moistened with the photosensitiser (toluidine chloride) after conventional mechanical-chemical preparation and conditioning.

After a reaction time of 60 sec. the toluidine chloride is brought in into the canal over a light sensor with the specific light source of precisely 635 nm wavelength, approximately 100nW power and activated for approximately 60 - 150 sec. By this means the toluidine chloride forms active oxygen directly at the bacteria, which destroys the cell walls of the bacteria selectively.

Step 1:

After the mechanical-chemical preparation using a preparations gel, alternating rinsing, for example with NaOCl-solution and final rinsing with the root canal conditioner, the canal is dried and filled with toluidine chloride solution (reaction time approx. 1 min). Toluidine chloride in the indicated concentration doesn't cause any blue changes in color.

Step 2:

All canals are treated with photo-activated disinfection light for approx. 150 sec., using the detachable endodontics point.

Step 3:

The with the photo-activated disinfection treated canals are rinsed with (for example) sterile water, dried and treated with a root canal filling after it.