Control of Periodontal Infections

2014-07-23 21:09:38 | BioPortfolio


The purpose of this study is to test combined effects of scaling and root planing with periodontal surgery, systemically administered amoxicillin and metronidazole, and/or local tetracycline on pocket depth reduction and attachment level "gain" in patients with chronic periodontitis.


In this 2x2x2 factorial design study, 229 moderate to advanced chronic periodontitis patients stratified according to current smoking status were recruited in USA and Sweden. Patients were randomly assigned to 8 groups, all of which were treated by SRP plus none, one, two or three adjunctive treatments. Thus, patients were assigned to groups that did or did not receive Surg, LAb, SAb or LAb+SAb (All) providing 8 treatment combinations (Surg + All, Surg + SAb, Surg + LAb, Surg alone, SRP + All, SRP + SAb, SRP + LAb, SRP alone). Clinical, microbiological and immunological measurements were taken for 2 years (at baseline, 3, 6, 12, 18 and 24 months). To focus on changes diseased sites, analysis was restricted to sites with baseline pocket depth greater than 5 mm. (also, these were the only sites treated by LAb). In this report, main effects and interactions were evaluated for PD reduction and AL gain two years post therapy for 187 of patients. Mean values were computed for each treatment group and averages after 2 years were compared to baseline by ANOVA. Factorial ANCOVA was used to examine significance of differences between Surg or not, SAb or not and LAb or not for PD reduction and AL gain using baseline attachment level or pocket depth as covariates and including current smoking as a factor.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Factorial Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment




scaling and root planing, local tetracycline, systemic metronidazole and amoxicillin, surgery, local antibiotics and systemic metronidazole and amoxicillin, local tetracycline and periodontal surgery, periodontal surgery and systemic metronidazole and amo


The Forsyth Institute
United States




The Forsyth Institute

Results (where available)

View Results


Published on BioPortfolio: 2014-07-23T21:09:38-0400

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Medical and Biotech [MESH] Definitions

A procedure for smoothing of the roughened root surface or cementum of a tooth after subgingival curettage or scaling, as part of periodontal therapy.

A fixed-ratio combination of amoxicillin trihydrate (see AMOXICILLIN), an aminopenicillin, and potassium clavulanate (see CLAVULANIC ACID), a beta-lactamase inhibitor, used to treat a broad-spectrum of bacterial infections, especially resistant strains.

Removal or disruption of DENTAL DEPOSITS and plaque-retentive DENTAL CALCULUS from tooth surfaces and within the periodontal pocket space without deliberate removal of CEMENTUM as done in ROOT PLANING and often in DENTAL SCALING. The goal is to conserve dental cementum to help maintain or re-establish healthy periodontal environment and eliminate PERIODONTITIS by using light instrumentation strokes and nonsurgical techniques (e.g., ultrasonic, laser instruments).

Removal of degenerated and necrotic epithelium and underlying connective tissue of a periodontal pocket in an effort to convert a chronic ulcerated wound to an acute surgical wound, thereby insuring wound healing and attachment or epithelial adhesion, and shrinkage of the marginal gingiva. The term is sometimes used in connection with smoothing of a root surface or ROOT PLANING. (Jablonski; Illustrated Dictionary of Dentistry, 1982)

A semisynthetic antibiotic related to TETRACYCLINE. It is more readily absorbed than TETRACYCLINE and can be used in lower doses.

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