Bit of a yukky question but I can (and have been able to for some years now) suck on my teeth/gums and literally fill my mouth with blood. I haven't got gingivitis, got decent, strong teeth, got a couple of fillings and a cap but I have never had infection problems like abbesses etc and have only needed cleans since my early teens onwards. Have receeding gums too but I did smoke for 30 odd years. Clean my teeth twice a day, mouthwash etc but flossing is painful due to the receeding gums, even those little brush type things can be painful ... Anyone else have similar things?