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.
You cannot see their profile picture. They may have blocked or deleted you, but you havenât. Their names are still on your contacts. But when you click their names and look at their profile, you wonât be able to see their profile picture. Just the default Skype picture. Missing previous conversations. Since their names are still in your contact list, you can click and try to send them an instant message.