Hi. Bleeding from the gums is the first sign of gum disease. The main cause of gum bleeding is the plaque and tartar deposition. You may have undergone scaling repeatedly, but if tartar is present on the teeth roots, underneath the gums and has not been removed completely and successfully, you will have recurrent bleeding as the gums remain inflamed persistently. LASER has a limited role, it cannot remove tartar, it can only reduce the bacterial load in the pockets and it has a very superficial action. I would request you to consult a periodontist for the same. Also, the periodontist will look in to the other causes of gum bleeding. U May have some systemic problems, which may be responsible for the same.
Next Steps
Visit a periodontist (gum specialist)