Community periodontal index of treatment needs index: an indicator of anaerobic periodontal infection.
BACKGROUND
Community periodontal index of treatment needs (CPITN) index is commonly used to measure periodontal disease. It's uniqueness, apart from assessing the periodontal status, also gives the treatment needs for the underlying condition. Benzoyl-DL-arginine napthylamide (BANA) test is a chair side diagnostic test used to detect the presence of putative periodontal pathogens. We correlated the CPITN scores of patients with BANA test results to assess the validity of CPITN as an indicator of anaerobic periodontal infection.


OBJECTIVE
The present study was aimed to correlate the CPITN scores with the BANA activity of subgingival plaque. The objective was to assess the validity of CPITN index as indicator of anaerobic periodontal infection.


METHODS
A total of 80 sites were selected from 20 patients with generalized chronic periodontitis. After measuring the probing depth with CPITN C probe, the highest score from each sextant was selected according to the CPITN criteria and subgingival plaque samples were collected using a sterile curette and the BANA test was performed.


RESULTS
Kendall's tau-b and Chi-square test were used to assess the correlation between the BANA test results and CPITN scores. Results indicated sensitivity (92.86%), specificity (80%) and agreement (91.25%); indicating the validity of CPITN in assessing anaerobic infection.


CONCLUSIONS
There was a significant correlation between BANA test results and scores 3 and score 4 of CPITN index (P < 0.001) clearly indicating the presence of anaerobic periodontal infection.
Muthukumar
S
S
Department of Periodontics, Sri Ramachandra Dental College, Sri Ramachandra University, Porur, Chennai-600 116, India.
Suresh
R
R
D000328:Adult; D001421:Bacteria, Anaerobic / Q000502:physiology*; D016866:Bacteroidaceae Infections / Q000175:diagnosis; D001439:Bacteroides / Q000145:classification; D001442:Bacteroides Infections / Q000175:diagnosis; D001587:Benzoylarginine-2-Naphthylamide; D055113:Chronic Periodontitis / Q000145:classification / Q000382:microbiology*; D003773:Dental Plaque / Q000382:microbiology; D016905:Gram-Negative Bacterial Infections / Q000145:classification / Q000175:diagnosis*; D006801:Humans; D007202:Indicators and Reagents; D020380:Needs Assessment; D017622:Periodontal Attachment Loss / Q000145:classification / Q000382:microbiology; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000145:classification / Q000382:microbiology; D016966:Porphyromonas gingivalis / Q000302:isolation & purification; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D048373:Treponema denticola / Q000302:isolation & purification; D014211:Treponemal Infections / Q000175:diagnosis
D007202:Indicators and Reagents; D001587:Benzoylarginine-2-Naphthylamide