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  • Title: The long-term effect of systemic tetracycline used as an adjunct to non-surgical treatment of advanced periodontitis.
    Author: Ramberg P, Rosling B, Serino G, Hellström MK, Socransky SS, Lindhe J.
    Journal: J Clin Periodontol; 2001 May; 28(5):446-52. PubMed ID: 11350508.
    Abstract:
    AIM: In the present study both the short- and the long-term effects were evaluated of a treatment that, during the phase of basic therapy, included administration of systemic tetracycline and non-surgical intervention. MATERIAL AND METHODS: 35 adult human subjects with advanced periodontitis, 19 females and 16 males, aged between 24 and 60 years, were included in a test group. 80 age- and sex-matched adult periodontitis subjects were recruited for a control group (42 females and 38 males). A baseline examination included assessment of the following parameters: number of teeth, plaque, bleeding on probing, probing attachment level, probing pocket depth. In radiographs, the distance between the cemento-enamel junction and the alveolar bone crest was determined at all interproximal sites. The subjects were given oral hygiene instruction. The members of the test group were provided with tablets with 250 mg of tetracycline hydrochloride and were instructed to take 1 tablet 4x per day for a period of 3 weeks. No antibiotic was given to the subjects in the control group. During the 3-week interval, all participants received 4-6 sessions of non-surgical periodontal therapy. All subjects were subsequently enrolled in a maintenance care program and were provided with supportive periodontal therapy (SPT) 3-4x per year. Clinical re-examinations were performed after 1, 3, 5 and 13 years. RESULTS: The present investigation demonstrated that tetracycline administered during a 3-week period concomitant with non-surgical treatment enhanced the outcome of mechanical therapy. At the re-examination 1 year after active therapy, there was in the test group an average gain in probing attachment that was almost 3x higher than the gain that occurred in an age and sex matched Control group. Re-examinations after 3, 5, and 13 years of SPT disclosed that this short-term benefit was not maintained in the longer perspective. CONCLUSION: The beneficial effect of systemically administered tetracycline on probing attachment level occurred in the first year post-therapy. Annual rates of probing attachment level change from 1 to 13 years did not differ between groups.
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