For tongue ulcers it was not appropriate to remove the adjacent teeth. no. 6 and no.7 teeth are molars which form occlusion with opposing molars and help in chewing,you cannot loose these teeth. as for now for no.5 n 8th tooth go for selective grinding of sharp cuspal edges that prevent tongue trauma.
For tongue ulcers you can apply dentogel,an antiseptic,anesthetic
oral ointment which gives relief along with a course of multivitamin
2 times a day for 7 days.
i hope that helps,take care