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  • Title: Supportive periodontal therapy of furcation sites: non-surgical instrumentation with or without topical doxycycline.
    Author: Dannewitz B, Lippert K, Lang NP, Tonetti MS, Eickholz P.
    Journal: J Clin Periodontol; 2009 Jun; 36(6):514-22. PubMed ID: 19508250.
    Abstract:
    OBJECTIVES: Evaluation of the clinical effect of topical subgingival application of doxycycline gel adjunctively to scaling and root planing (SRP) at furcation sites during supportive periodontal therapy (SPT). MATERIAL AND METHODS: In 39 SPT patients exhibiting at least four pockets > or m with bleeding on probing, SRP was rendered in all pockets > or m. Additionally, 14% doxycycline gel was applied subgingivally in 20 patients after random assignment (SRP&DOXY). Clinical parameters were assessed at baseline, 3, 6, and 12 months after therapy. Additional benefit of topical doxycycline was evaluated as a short-term (3 months) improvement of furcation involvement and influence on the frequency of re-instrumentation up to 12 months. RESULTS: A total of 323 furcation sites (class 0: 160; class I: 101; class II: 18; and class III: 44) were treated (SRP: 165, SRP&DOXY: 158). SRP&DOXY resulted in better improvement of furcation involvement than SRP alone 3 months after treatment (p=0.041). However, SRP&DOXY failed to show a significant difference between both groups in the number of re-instrumentations. CONCLUSION: Single subgingival application of doxycycline in addition to SRP had a short-term effect on furcation involvement. However, it failed to reduce the frequency of re-instrumentation up to 12 months at furcation sites.
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