The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
Clenching of teeth can be the consequence of several so-called “patterns of disharmony” in Chinese Medicine.
Chinese Medicine sees the body as a system, not a sum of isolated parts. A "pattern" is when the system's harmony is disrupted, leading to symptoms or signs that something is wrong (like clenching of teeth here). It is similar to the concept of disease in Western Medicine but not quite: a Western disease can often be explained by several Chinese patterns and vice-versa.
A pattern often manifests itself in a combination of symptoms that, at first glance, do not seem necessarily related to each others. For instance here clenching of teeth is often associated with high fever, fainting and convulsions in the pattern “Heat victorious stirring Wind”.
Once identified, patterns are treated using medicinal herbs, acupuncture, and other therapies. In the case of clenching of teeth we’ve identified that a herbal formula called Ling Jiao Gou Teng Tang can help treat the patterns behind the symptom.
In Chinese Medicine clenching of teeth is a symptom for the pattern "Heat victorious stirring Wind". Below is a small explanation for it with links for more details.
Pulse type(s): Rapid (Shu), Wiry (Xian)
Heat victorious stirring Wind is often treated with Ling Jiao Gou Teng Tang, a herbal formula made of 10 herbs (including Saiga Antelope's Horns - Ling Yang Jiao - as a key herb). Ling Jiao Gou Teng Tang belongs to the category of "formulas that pacify and extinguish internal wind", which might be why it is often recommended for this pattern. Its main action as a formula is: "Cools the Liver".
Source date: Qing dynasty
Number of ingredients: 10 herbs
Key actions: Cools the Liver. Extinguishes Wind. Increases Fluids. Relaxes the sinews.
Because it is a formula often recommended to treat the pattern 'Heat victorious stirring Wind' of which clenching of teeth is a symptom.
Its main actions are: Calms Liver Wind and relieves spasms. Clears Liver Heat and sedates Liver Yang.
Its main actions are: Clears Internal Liver Wind, subdues Yang. Clears Liver Fire and brightens the eyes. Eliminates toxins and reduces fever.