Вставьте необходимые предлоги: Pulp death is sometimes followed ... developтent of a chronic alveolar abscess instead. This usually gives rise ... very little pain and most patients are quite unaware its presencе. It may often be detected... the presence of a small hole ... the gum called a sinus, which is a track leading from the abscess cavity in the alveolar bone to the surfaсе the gum. Pus drains from the abscess through the sinus the mouth. This outlet prevents a build-up . pressure inside the bone and explains the lack of pain. If an acute abscess is not treated it eventually turns ... a chronic abscess by drainage of pus through a sinus. This relieves the pain and the features ... acute inflammation largely disappear.