A double‐blind trial of tetracycline in the management of early onset periodontitis

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Abstract
The aim of the study was to evaluate the adjunctive effect of systemic tetracycline (250 mg qds for 14 days) in sequential root planing and surgical phases of treatment in a randomised, double‐blind controlled trial. 38 patients who were under 26 years of age. in good general health and with localised (15 test/15 control) or generalised (4 test/4 control) early onset periodontitis completed the non‐surgical phase. Data were analysed by ANOVA using baseline covariates and transformations where appropriate. Improvements in probing depth, probing attachment level and bleeding on probing were significantly better in the group treated with adjunctive tetracycline. at 3 months post‐treatment. 26 patients (13 test/13 control) subsequently completed the surgical phase (modified Widman flap surgery with adjunctive tetracycline or placebo as before) and were re‐examined at 6 months and 12 months. In the test group, 58% of the originally affected teeth required surgery compared to 75% in the control group. Surgery produced further reductions in mean probing depths but no further gains in probing attachment. There were no further statistically significant differences between test and control groups for any of the clinical measures, although the tetracycline group appeared to maintain an advantage. In conclusion, systemically administered tetracycline is a useful adjunct in the management of early onset periodontitis. particularly in non‐surgical treatment.