“…The number of operations for obesity has increased in recent years 5,47 and its success is founded on the effective weight loss, control of comorbidities and increased quality of life 1,5,9,29,47 . However, some negative effects have also been reported in several studies, such as hyperparathyroidism and osteoporosis 39,55,57,59 chronic regurgitation, nutritional deficiencies 2,6,28,30,59 , kidney problems 3,16 and oral problems 22,23,31,49 . The objective of this review was to identify the consequences of postoperative bariatric surgery (as vitamin deficiency, gastroesophageal reflux, kidney disturbances, psychological alterations, reduction of diabetes mellitus, improvement in obstructive sleep apnea and, also, to check its impact on oral health and dental caries, xerostomy, erosion and bone resorption.…”