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  • Title: The effectiveness of scaling and root planing with adjunctive time-release minocycline using an open and closed approach for the treatment of periodontitis.
    Author: Zingale J, Harpenau L, Bruce G, Chambers D, Lundergan W.
    Journal: Gen Dent; 2012; 60(4):300-5. PubMed ID: 22782041.
    Abstract:
    The purpose of this study was to determine the effectiveness of scaling and root planing using a closed and open approach (papilla reflection) with and without a locally delivered antibiotic (minocycline hydrochloride microspheres) in the treatment of moderate to advanced chronic periodontitis. Twenty-five periodontal recall patients with four or more probing depths of 5.0 to 9.0 mm and bleeding on probing (BOP) participated in this double-blind trial. Each of four sites per patient was randomly assigned a different treatment: scaling/root planing only; scaling/root planing followed by minocycline placement; gingival papilla reflection followed by scaling/root planing and flap closure; and gingival papilla reflection, scaling/root planing, minocycline placement, and flap closure. At baseline and each subsequent appointment, probing depth, BOP, and clinical crown length were recorded. Patients returned at three months for measurements and supportive periodontal therapy, and at six months for final measurements. Patients followed their usual oral hygiene regimens. Data were analyzed for significant differences using a repeated measure ANOVA and a Student t-test. All treatments resulted in reduction of probing depths (average of 1.76 mm) and a marked reduction in BOP at six months. While the papilla reflection plus minocycline showed the greatest reduction in probing depth (1.91 mm) and the greatest decrease in BOP (20% at three months and 28% at six months), the differences were not significant (p > 0.05). Clinical crown lengths did not change significantly in the treatment sites; therefore, improvements in probing depth can be attributed to improved clinical attachment levels (long junctional epithelium). The combination therapies did not differ significantly from scaling/root planing alone in decreasing probing depths and BOP.
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