I did my project on periodontitis (gum disease). With periodontitis, bacteria builds up and infects the gum tissues. The tissues involved with the gums are epithelial stratified squamous and connective proper dense. Some symptoms of periodontitis include bleeding gums, swollen gums, receding gums, bad breath, and in worsening cases tooth loss. Tooth loss with periodontitis can affect the alveolar bone, which can result in mass loss in the bone and difficulties with jaw functions.