Dentures that is, denture, denture generally does not cause parotid gland enlargement, parotid gland enlargement may be the cause of chronic obstructive parotitis or Schegelin syndrome and other diseases, specific as follows. 1 Chronic obstructive parotitis: it can be caused by narrowing of the duct system, blockage of salivary gland duct stones or foreign objects, repeated swelling of the parotid gland, slight redness and swelling of the duct opening can be seen, and turbid and viscous saliva can be seen flowing out of the duct opening when the parotid gland is pressed. 2. Sjögren’s syndrome: it is an autoimmune disease, the parotid gland can be diffusely enlarged, the border is not obvious, the surface is smooth, and there is no adhesion with the surrounding tissues. Due to decreased salivary secretion, the parotid gland may have secondary retrograde infection, and the parotid gland is repeatedly swollen with slight tenderness. There may be other causes of parotid gland enlargement, it is recommended to go to the hospital for timely consultation and early targeted treatment.