Denture sore mouth is primarily associated with psychological factors such as stress and anxiety, which can lead to mucosal hypersensitivity and pain without visible lesions. These factors may cause patients to perceive discomfort or burning sensations under the denture. Unlike mechanical causes, psychological influences affect pain perception and tolerance, making them a significant contributor in idiopathic cases of denture stomatitis. Proper patient management includes addressing these psychological aspects along with prosthetic adjustments.

Reference: Contemporary Oral Medicine, Crispian Scully, 7th Edition.