Receding gums are typically caused by bacteria that is generated from tartar and plaque build-up. Regular teeth cleanings can help clean that build-up and reduce the risk of gum disease. However, receding gums can be caused by a variety of factors, including overbrushing (brushing too hard), genetics, and a weakened immune system.
Even physical wear and tear can cause receding gums, and this can occur from things that might surprise you, from night-time teeth grinding to lip piercings. Smoking and tobacco use can cause gum recession. Also, dentures that aren’t fitted properly can also be a cause of receding gums.