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.
Under each group name, you will see either the word âVisibleâ or âHidden.â To change a groupâs visibility on your profile, roll over that word and click on âChange.â On the resulting screen, uncheck the box next to âDisplay the group logo on your profileâ to remove it from public view.