Abstract: Objective to explore the effect of oral irrigator on the periodontal health of the crown bridge prosthesis.
Methods: to divide 108 patients with colostomy into two groups at random. 54 cases of them were given lavation by balloon irrigator, and the other 54 cases given routine nursing.
Discontinuous bladder irrigating was used in another group(B) ,with only once used bladder irrigator and high capacity closed rubber bag.
