An oral current measurement (synonym: galvanic oral current measurement) is used to determine the electrical potential that can build up between different types of metals in the aqueous environment of the oral cavity. Proponents of holistic treatment methods attribute adverse health effects to this.
Scientifically undisputed is the fact that electrochemical processes occur between metals of different composition in an aqueous environment. The less noble metal releases ions into the saliva as an electrolyte, while the more noble, chemically more inert metal deposits these ions on its surface. The highest values occur between amalgam as a base metal and gold as a precious metal.
In every biological system, i.e. every living being, the flow of electricity is used for vital processes such as the transmission of stimuli in all nerves. In the process, low electrical potentials of -80 mV to +30 mV are generated. The potentials generated in saliva can be as high as 300 mV. In naturopathy, they are attributed with triggering interference fields that also affect areas of the body outside the oral cavity.
Although an oral current measurement alone may not be sufficient for the causal explanation of health complaints, it seems sensible to select the metals or metal alloys introduced into the mouth in such a way that, if possible, no electrical potentials can form.
However, it is not possible to dispense with metals completely in every prosthetic work (dental prosthesis). In filling and dental technology, a wide variety of metals and alloys must be used. For example, a removable cast model denture obtains its stability from a metal base. In the field of crown prosthetics, metal-free ceramic crowns are available but are not indicated for every patient. Conservative dentistry, on the other hand, can largely dispense with amalgam as a filling material in favor of resin fillings and resin and ceramic inlays.
Indications (areas of application)
Oral current measurement may be indicated if a patient suffers from any of the following health impairments, as potential differences in the mouth are discussed as triggers for these and other conditions:
- Metal taste
- Dry mouth
- Burning of the mouth
- Aphthae
- Effects on the central nervous system
- Altered oral (mouth) bacterial spectrum.
- Dizziness
The procedure
By means of two electrodes touching two dental fillings or crowns consisting of different metals, the potential difference (voltage difference) built up between them is determined. This is dependent not only on the materials processed, but also on the pH of the saliva.