Knowledge center. Periodontitis means  inflammation around the tooth - it is a serious gum infection that damages the soft tissue and bone that supports the tooth. All periodontal diseases, including periodontitis, are infections which affect the periodontium.nowledge center. Periodontitis means  inflammation around the tooth - it is a serious gum infection that damages the soft tissue and bone that supports the tooth. All periodontal diseases, including periodontitis, are infections which affect the periodontium.
When you add a friend to your limited profile list on Facebook, he becomes unable to see content you've restricted from members of the list. The privacy settings Facebook rolled out in August 2011 restrict all content you post from members of the limited profile list.
People you know may add you, and also people who you do not know. You can send people a friend request or they can send you one. All you have to do is choose whether to accept or decline their request you only have to add people you want to. It will tell you how many friends you have on your profile.