title: Postoperative bleeding tendency as a risk factor in Actinobacillus actinomycetemcomitans-associated periodontitis.
abstract: Frequent bleeding on probing (BOP) has been considered a risk factor for recurrence of periodontitis. In the present study, 29 patients with Actinobacillus actinomycetemcomitans-associated periodontitis were enrolled in a carefully performed recall system. At 6 sites per tooth, periodontal probing depth (PPD), gingival index (GI), plaque index (PlI) and BOP was assessed 6 weeks, 6 months, 1 and 2 years after comprehensive therapy. Professional toothcleaning and subgingival scaling at sites with PPD > or = 5 mm and BOP was carried out every 2nd or 3rd month. Subgingival samples from 2 sites, a pooled subgingival sample, cheek mucosa, saliva and tongue samples were selectively cultivated for A. actinomycetemcomitans after 2 years. Following active therapy, 8% sites had a PPD of > or = 4 mm, whereas 21% sites bled on probing. After 2 years, respective figures were 12 and 27%. During maintenance, frequent BOP (> or = 3 times at 4 visits) had a predictive value of 0.133 to indicate an increase in PPD of > or = 2 mm and a negative predictive value of 0.947. The predictive value of no bleeding to indicate a stable site was 0.972, the negative predictive value 0.078. There was evidence for heterogeneity of associations between increase in PPD of > or = 2 mm and > or = 3 times BOP among patients (chi 2(28) = 41.45, p < 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Periodontology, School of Dental Medicine, Westfälische Wilhelms-Universität, Münster, Germany.
authors.forename: H P
authors.initials: HP
authors.lastname: Müller
authors.forename: A
authors.initials: A
authors.lastname: Heinecke
authors.forename: D E
authors.initials: DE
authors.lastname: Lange
mesh_terms: D000293:Adolescent; D000328:Adult; D016976:Aggregatibacter actinomycetemcomitans; D010520:Aggressive Periodontitis / Q000175:diagnosis / Q000382:microbiology / Q000503:physiopathology; D016010:Binomial Distribution; D016009:Chi-Square Distribution; D015169:Colony Count, Microbial; D003773:Dental Plaque / Q000382:microbiology; D012534:Dental Scaling / Q000009:adverse effects; D005260:Female; D005884:Gingival Hemorrhage / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D017622:Periodontal Attachment Loss / Q000175:diagnosis / Q000503:physiopathology; D010512:Periodontal Index; D010517:Periodontics / Q000295:instrumentation; D010518:Periodontitis / Q000175:diagnosis* / Q000382:microbiology* / Q000503:physiopathology; D011237:Predictive Value of Tests; D011379:Prognosis; D012008:Recurrence; D012307:Risk Factors