Clinical and microbiological evaluations of acute periodontitis in areas of teeth applied with orthodontic bands

Two cases with severe periodontal inflammation in areas of teeth applied with orthodontic bands are presented. Both were diagnosed as acute periodontitis, and removal of the orthodontic bands followed by professional oral hygiene procedures resulted in the recovery to the normal level of periodontal condition. The presence of 10 targeted species of Gram-negative periodontal bacteria in subgingival plaque samples taken from the corresponding teeth, which were not detected in either patient during the period of severe periodontal inflammation, was assessed several times using a polymerase chain reaction method. As the periodontal conditions of the patients improved, these bacteria were identified during the follow-up examination periods. Our results suggest that none of the 10 Gram-negative periodontal bacteria were associated the acute periodontitis at the teeth applied with orthodontic bands.