Does lasering gums, cause them to recede, show roots/nerves.thus pain? (photo)

Had bad crowns removed that were giving me gingivitis, prothodontist, asked to laser my gums (#6 7 8 teeth) temps on, 2 wks later, bleeding, inflammed, receding gums, severe pain, now he says, i have periodontist disease causing receding gums. did the lasering of gums do that to me? they hadnt receded before the laser.he replaced the temps. 3 days later, now gums above crowns