Does my tongue cause gingivitis on my front teeth?

Absolutely not. Gingivitis and Periodontitis are infections of the gums caused by failure to properly remove the layers of bacteria (Plaque) that are left on your teeth by ineffective improper Oral Hygiene. Failure to properly disrupt the Plaque results in formation of digestive enzymes that attack your gums. Gum disease is progressive. See Dentist quickly.

Gingivitis is an inflammation of gingival tissue usually caused by poor oral hygiene which allows bacteria to collect at the gumline. The toxins from the bacteria irritate the gingival tissues. It has nothing to do with your tongue.