Abstract
This study will evaluate, in rats, the progression of the periapical lesion to stimulation of the hypothalamic-pituitary-adrenal axis by chronic stress. Will use animal model of periapicopatia and chronic stress, being that the stress will begin 7 days before the induction of the injury. The progression of the lesion will be evaluated in 3 different periods: after 14, 21 and 28 days of th…