Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Support vector machine-based differentiation between aggressive and chronic periodontitis using microbial profiles

Full text
Feres, Magda [1] ; Louzoun, Yoram [2, 3] ; Haber, Simi [2] ; Faveri, Marcelo [1] ; Figueiredo, Luciene C. [1] ; Levin, Liran [4]
Total Authors: 6
[1] Univ Guarulhos, Dept Periodontol, Guarulhos, SP - Brazil
[2] Bar Ilan Univ, Dept Math, Ramat Gan - Israel
[3] Bar Ilan Univ, Leslie & Susan Gonda Goldschmied Multidisciplinar, Ramat Gan - Israel
[4] Univ Alberta, Fac Med & Dent, Div Periodontol, Edmonton, AB - Canada
Total Affiliations: 4
Document type: Journal article
Source: INTERNATIONAL DENTAL JOURNAL; v. 68, n. 1, p. 39-46, FEB 2018.
Web of Science Citations: 6

Background: The existence of specific microbial profiles for different periodontal conditions is still a matter of debate. The aim of this study was to test the hypothesis that 40 bacterial species could be used to classify patients, utilising machine learning, into generalised chronic periodontitis (ChP), generalised aggressive periodontitis (AgP) and periodontal health (PH). Method: Subgingival biofilm samples were collected from patients with AgP, ChP and PH and analysed for their content of 40 bacterial species using checkerboard DNA-DNA hybridisation. Two stages of machine learning were then performed. First of all, we tested whether there was a difference between the composition of bacterial communities in PH and in disease, and then we tested whether a difference existed in the composition of bacterial communities between ChP and AgP. The data were split in each analysis to 70% train and 30% test. A support vector machine (SVM) classifier was used with a linear kernel and a Box constraint of 1. The analysis was divided into two parts. Results: Overall, 435 patients (3,915 samples) were included in the analysis (PH = 53; ChP = 308; AgP = 74). The variance of the healthy samples in all principal component analysis (PCA) directions was smaller than that of the periodontally diseased samples, suggesting that PH is characterised by a uniform bacterial composition and that the bacterial composition of periodontally diseased samples is much more diverse. The relative bacterial load could distinguish between AgP and ChP. Conclusion: An SVC classifier using a panel of 40 bacterial species was able to distinguish between PH, AgP in young individuals and ChP. (AU)

FAPESP's process: 10/10384-2 - Effect of full-mouth disinfection compared with conventional scaling and root planning with chlorhexidine.
Grantee:Luciene Cristina de Figueiredo
Support Opportunities: Regular Research Grants
FAPESP's process: 11/23034-2 - Clinical and microbiological outcomes of timing of administration of systemic amoxicillin plus metronidazole associated with SRP in the treatment of subjcts with periodontitis
Grantee:Marcelo de Faveri
Support Opportunities: Regular Research Grants
FAPESP's process: 09/17677-8 - Clinical and microbiological influence of the dose and duration of systemic antibiotics in the treatment of chronic periodontitis.
Grantee:Magda Feres Figueiredo
Support Opportunities: Regular Research Grants
FAPESP's process: 07/56413-0 - Clinical and microbiological effects of amoxicillin and metronidazole systemic association to scaling and root planing in subjects with generalized aggressive periodontitis
Grantee:Marcelo de Faveri
Support Opportunities: Regular Research Grants