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.
In Chinese Medicine gingivitis can be treated by one herbs that we have on record. Here is the list below.
Gypsum might help with gingivitis
Why might Gypsum (Shi Gao) help with gingivitis?
Because it is a herb specifically indicated to treat gingivitis as can be seen on Gypsum's page.
Gypsum is a Cold herb that tastes Pungent and Sweet. It targets the Stomach and the Lung.
Its main actions are: Clears Heat and drains Fire. Clears Lung Heat. Relieves thirst and restlessness. Clears Stomach Heat.
Other symptoms often associated with gingivitis
Abdominal pain Constipation Hypochondriac pain Chills Low-grade fever Cold hands and feet Fever Dry mouth Asthma Coughing