Effects of Non‐Surgical Mechanical Therapy on the Subgingival Microbiota of Brazilians With Untreated Chronic Periodontitis: 9‐Month Results

Background: Mechanical periodontal therapy is the most common treatment of periodontal infections. It is directed primarily towards removing biofilm and calculus from the root surfaces, leading to ecological changes in the subgingival environment. Thus, the purpose of this study was to evaluate the...

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Bibliographic Details
Published in:Journal of periodontology (1970) 2005-05, Vol.76 (5), p.778-784
Main Authors: Colombo, Ana Paula Vieira, Teles, Ricardo Palmier, Torres, Maria Cynésia, Rosalém, Wilson, Mendes, Maria Cláudia S., Souto, Renata M., Uzeda, Milton
Format: Article
Language:English
Subjects:
Adult
Biofilms
Brazil
Chronic Disease
comparison studies
Dental Plaque - microbiology
Dental Scaling
Dentistry
DNA probes
Female
follow‐up studies
Humans
Male
Periodontitis - microbiology
Periodontitis - therapy
periodontitis/pathogenesis
planing
Root Planing
scaling
Statistics, Nonparametric
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Summary:Background: Mechanical periodontal therapy is the most common treatment of periodontal infections. It is directed primarily towards removing biofilm and calculus from the root surfaces, leading to ecological changes in the subgingival environment. Thus, the purpose of this study was to evaluate the effects of scaling and root planing (SRP) on the subgingival microbiota of Brazilian subjects with untreated chronic periodontitis over a 9‐month period. Methods: Twenty‐five untreated chronic periodontitis patients (mean age 43 ± 5 years; 20% smokers; 45% males) were selected from a Brazilian population. At baseline, probing depth (PD), clinical attachment level (CAL), visible supragingival biofilm (SB), bleeding on probing (BOP), and suppuration (SUP) were measured at six sites/tooth. Subgingival plaque samples were obtained from 10 sites with the deepest PD (≥5 mm) of each subject and tested for the presence of 25 oral species by DNA probes and the checkerboard technique. Patients received full mouth SRP and oral hygiene instructions. Clinical and microbiological assessments were repeated at 3, 6, and 9 months after therapy. During this period, all patients received maintenance therapy, including supragingival prophylaxis and reinforcement in home care procedures. The clinical and microbiological parameters examined were computed for each subject and at each visit. Differences over time were sought using the Friedman test. Results: Significant reductions in mean CAL and PD (P
ISSN:0022-3492
1943-3670
DOI:10.1902/jop.2005.76.5.778