Having a healthy gum tissue around the tooth contributes not only to the health of the tooth but also how natural and beautiful they look.
Gum recession is very common and can happen due to many reasons out of which most frequent are periodontal (gum) disease, excessive brushing, brushing with a hard toothbrush, unfavorable position of the tooth, and sometimes trauma due to wrong bite, defective dental restorations, or due to foreign objects like tongue and lip piercings. Aging is another factor for gum recession.
As a result of gum recession root surface of the tooth becomes exposed. Since it is not protected with enamel of the tooth it can become sensitive to cold, hot, and touch. It also wears off faster during brushing creating abrasions. Exposed root surface becomes susceptible to root decay. Gum recession can also create impaired oral hygiene and esthetic issues.