Nance appliance is a device utilized to reinforce the anchorage when combined with fixed appliances, exerting a permanent force on the palatal mucosa. In the study, the effects of Nance appliance on palatal mucosa was investigated histologically. After a period of 9 months, in 10 subjects, a parakeratosis and also an infiltration of mononuclear cells presenting a chronic tissue inflammation under the acrylic button.

Keywords: Nance appliance, Palatal mucosa, Histology