Sore/bleeding gums can be a result of gum disease, which is an inflammation of the gum tissue with or without the loss of the bone structure surrounding the teeth and is mainly caused by bacteria build up.
The terms “Gingivitis” and "Periodontitis" are used to describe its severity. Gingivitis is the inflammation of the gum tissue without a loss of the bone structure supporting the teeth and classic clinical sign is bleeding gums. This can also lead to swollen gums and bad breadth. Whereas, if left untreated, gingivitis can progress into periodontal disease, resulting into bone loss around the tooth. This leads to wiggly teeth, gum recession and eventually loss of teeth.
Gum disease is usually caused by build up of bacterial plaque, which can be a result of poor brushing and flossing habits, infrequent hygiene visits, smoking, mouth breathing and genetics etc.
Treatment of gum disease can vary from Scaling to remove all the soft & hardened plaque (Calculus) to Deep cleaning (Root Planing). It is important that you visit the dentist at first signs of bleeding gums for clean to prevent the onset of gum disease / Periodontitis.