Oral galvanism is the name the GAPS sources use for electrical currents between dental metals. Dr. Natasha Campbell-McBride discusses it separately from metal allergy and mercury exposure, and directs the assessment and treatment sequence to a biological or environmental dentist.[1]
Mixed Metals and Electrical Currents
The book describes currents running between metals in the mouth and says they can affect the nervous and immune systems and contribute to chronic illness. The official FAQ gives the image of a battery in the mouth and names nickel, gold, silver, titanium and amalgam in that discussion.[1][2]
The battery comparison explains what she means by galvanism. It is not a way to determine from a photograph whether the materials in your mouth are producing a clinically important problem. The actual materials and examination belong in the dental assessment.
Symptoms Beyond the Mouth in the FAQ
The FAQ raises dental metals in an answer about restless legs. Campbell-McBride says currents can be picked up by the nervous system and describes effects in the arms, legs and elsewhere. This is her explanation of a possible dental contribution to symptoms away from the teeth.[2]
The same restless-leg answer also discusses magnesium and its metabolism. Keeping the dental passage in that wider answer matters. Leg discomfort alone does not establish oral galvanism, and the FAQ does not give a home symptom test that identifies which filling is responsible.
Measurement and Treatment Sequence
In “Teeth,” question 5, Campbell-McBride says that fillings can carry positive or negative charges and that the dentist should measure them before planning removal. She describes beginning with the largest negatively charged filling and measuring again after it is removed because the remaining charges change.[3]
This is the sequence described by the source for professional work. It is not a list for a reader to apply to their own fillings. In that answer, she directs readers to Hal Huggins’ It’s All in Your Head for the fuller dental discussion; the reference identifies the fuller approach she is discussing, rather than a treatment sequence to work out on your own.[3]
Galvanism, Allergy and Amalgam Are Different Questions
A concern about a metal allergy, mercury exposure from an amalgam and electrical interaction between materials is not automatically the same concern. Ask the dentist which question the proposed examination or measurement addresses. The amalgam and toxic-metal guide covers the exposure and timing discussion, and the biological-dentist guide covers choosing and working with a provider.
The book mentions replacing titanium implants with porcelain, using the term zirconium. That is the wording of its materials discussion, not an instruction to select or remove an implant without an individual dental plan.[1]
Prepare the Dental History
List existing fillings, crowns, bridges and implants, including any materials you know and the approximate treatment dates. If records are missing, ask the practice that did the work. You do not have to guess a metal by its color or decide in advance that every restoration needs removal.
Ask what measurements would be used, what they would show, and what other findings would be needed before recommending treatment. Ask how the plan would change if a measurement or symptom did not fit the proposed explanation. Those questions make the appointment useful without predetermining its outcome.
Questions About Oral Galvanism
Does Having Two Metals Diagnose the Problem?
It identifies something to discuss in the source’s framework. It does not establish the cause of a person’s chronic symptoms. The FAQ directs the current-measurement question to a trained dentist.[2][3]
Why Does the Source Call for Remeasurement?
It says removing one filling changes the charges among those remaining. The measurement and sequence belong to the professional plan described in the FAQ.[3]
Your Next Step
Gather the dental records you have and the questions you want answered. Keep the concern about symptoms separate from the findings about the actual materials in your mouth. My Care Team Log is listed in the WFLI Shop.
References
- Campbell-McBride, N. Gut and Physiology Syndrome (2020), “Our Teeth and Bones,” pp. 106–117.
- Campbell-McBride, N. Official GAPS FAQs, “Leg Cramps,” question 2.
- Campbell-McBride, N. Official GAPS FAQs, “Teeth,” question 5.
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