Changes of periodontopathogens and clinical parameters of periodontal tissue after debanding

Yu-Mi Yang; Seong-Sik Kim; Eun-Sook Jun; Soo-Byung Park
August 2006
Korean Journal of Orthodontics / Daehan ci'gwa gyojeong haghoeji;Aug2006, Vol. 36 Issue 4, p263
Academic Journal
OBJECTIVE: The purpose of this study was to evaluate clinical and microbiological changes in periodontal tissue around the banded molars after debanding. METHODS: This study included 17 young adult patients treated with fixed orthodontic appliances including bands on the last molars more than 1 years. Probing depth and bleeding frequency were measured and plaque samples were collected from the last banded molars in all quadrants of each patient. All the data were collected immediately after debanding and 4 weeks after debanding. RESULTS: Using polymerase chain reaction based on 16S rDNA, the presence of Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola was detected. After debanding, probing depth, bleeding frequency, and prevalance of periodontopathogens were reduced. Probing depth and bleeding frequency were most decreased in the buccal site of the mandibular left molar and were least decreased in the lingual site of the maxillary right molar. CONCLUSION: The results of this study indicated that proper management of oral hygiene after debanding can recuperate unfavorable periodontal condition caused by orthodontic treatment.


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