Psychosomatic disorders are the consequences of harmful effects that result from psychic influences on the organic control of tissues. Mouth is directly or symbolically related to major human instincts and passions. Oral diseases with psychosomatic etiology have long been known in medicine and Mental or emotional factors may act as risk factor that could influence the initiation and progression of oro-mucosal diseases. Psychogenic disorders may also be responsible for oral complaints such as atypical facial pain and burning mouth syndrome, dry mouth or factitious injuries. There are a number of disorders affecting the oral and Para oral structures, which have a definitive psychosomatic cause. This book is intended to draw an insight into psychological basis of oral disease.