collectively , however , these diseases result in only a minority ( approximately 5-20 per cent ) of most populations which have been adequately surveyed having destructive periodontitis of a 'clinically significant ' degree , i.e . with pockets over 6 mm , attachment loss over 4 mm or teeth requiring extraction because of their periodontal condition alone .
C0031099
periodontitis
C0031090
periodontal condition