BackgroundPeriopathogenic bacteria play an important role in the etiology of periodontal disease. At present, no study screening for periopathogens in the DR Congo was carried out. The aim of this pilot study was to investigate the prevalence of five periopathogens in Congolese patients with periodontitis and to determine the association between these bacteria.Material and MethodsTwelve patients (eight women and four men) with a mean age of 45 ± 19 years from those consulted in dental services of two medical centers of Kinshasa from April 2017 to October 2017 were included. Full mouth examination was registered, the probing pocket depth and clinical attachment level were assessed at six sites per tooth. Dental subgingival plaque samples were taken in the deepest pocket per arch in the maxilla and mandible. DNA analysis was performed using DNA-strip technology. The Fisher Exact test and Pearson correlation were used for statistical analysis.ResultsPorphyromonas gingivalis and Tannerella forsythia were detected at high level of 92%, Prevotella intermedia at a rate of 75% whereas Treponema denticola was detected in all patients. Aggregatibacter actinomycetemcomitans was not detected. Strong associations were found between three bacteria of the red complex and between T. denticola and P. intermedia (r=1).ConclusionsThis first study investigating periopathogens in subgingival plaque of Congolese with periodontitis demonstrated a high prevalence of the red complex (P. gingivalis, T. forsythia and T. denticola). Associations between different bacteria of this complex were strong. Key words:Association, bacteria, periopathogen, periodontitis, prevalence.
A BSTRACT Background: Chronic and aggressive periodontitis were the main forms of periodontitis according to the 1999 classification of periodontal diseases and conditions. Their profile in Congolese patients is still undescribed. Aim: The aim of this study was to compare the profile of chronic periodontitis (ChP) with that of aggressive periodontitis (AgP) in Congolese patients. Materials and Methods: Thirty-two patients with ChP and 20 with AgP who consulted the dental services at any of the four medical centers in Kinshasa, from April 2017 to April 2018, were enrolled in the cross-sectional study. All patients underwent a full mouth examination, including assessment of the probing pocket depth and clinical attachment level at six sites per tooth. Microbial samples were collected in the deepest pocket in the maxilla and the deepest pocket in the mandible. A deoxyribonucleic acid (DNA) analysis was performed using DNA strip technology. Fisher exact test, the chi-square test, the t test, and the Mann–Whitney test were used for the statistical analysis. Results: Patients with AgP were significantly younger than those with ChP ( P < 0.001). There was no significant difference in the prevalence of Porphyromonas gingivalis , Tannerella forsythia , Treponema denticola , or Prevotella intermedia between the AgP and ChP groups ( P > 0.05). Aggregatibacter actinomycetemcomitans was detected in 10% of cases in the AgP group and in none of those in the ChP group ( P = 0.143). Conclusion: This study shows that the clinical profiles of ChP and AgP are similar in Congolese patients. There were no microbiological differences between these two forms of periodontitis.
Background: Dental implant is an artificial root inserted in the jawbone, which restores a lost tooth so that it looks, feels, and is fit like a natural tooth. It is considered to be the best treatment option for single or multiple missing teeth. The aim of this study was to assess the awareness of patients about dental implants as an alternative treatment in Congolese patients. Materials and Methods: A cross-sectional study was conducted in two institutions namely, CBCO Bandal and Ngaliema Clinic, from August to December 2017. A total of 450 respondents have participated in the survey. A printed questionnaire comprised of 20 questions in order to evaluate patients dental awareness was used. Gender, level of education, awareness of dental implant and dental implants therapy, sources of information and the expectation about the sources of information were assessed. The collected data were entered in Microsoft Excel 2010 and analyzed by SPSS (IBM SPSS 20.0, Chicago, IL, USA) software. Results: Out of 450 participants, 14.4% were aware of dental implants. The main disadvantage of dental implant was the high cost. When asked about the anchorage, 86% didn't know where the dental implant was anchored. Ninety-two percent didn't know for how long an implant last, 6% thought that dental implant last for a lifetime. When patients were asked about the sources of information, the dentist (5%) and media (5.5%) were the main sources of information. The majority of patients (88.4%) would like to get information about dental implants from their dentist. Conclusion: Dentists should be more involved in the promotion of information about dental implants as a treatment modality to replace missing teeth.
Background: Periodontitis is a multifactorial disease which is highly prevalent worldwide. The control of periodontal risk factor network is of paramount importance for the management of the disease. Aim: The aim of this study was to assess the frequency and identify the factors associated with periodontitis in Congolese patients. Material and Methods: This cross-sectional study was carried out in four medical centers in the city of Kinshasa between April 2017 and April 2018. The study included patients aged at least 12 years old who consulted the dental services of these centers and who met the inclusion criteria. The participants underwent a structured interview and a clinical periodontal examination. The latter involved the entire dentition, and periodontal pocket and attachment level measurements were taken at six sites per tooth. The plaque and bleeding index were recorded. Logistic regression was used to identify associated factors. The significance level was set at p < 0.05. Results: The study included 827 patients and 42% of them had periodontitis. The most represented age group was between 20 and 29 years old. In multivariate analysis, age greater than or equal to 35 years, OR = 2.45 CI 95% (1.77 -3.45), and the amount of plaque expressed as plaque index ≥ 1, OR = 2 CI 95% (1.31 -3.07) were factors associated with periodontitis. Conclusion: Factors associated with periodontitis found in this study are age ≥35 years and the amount of plaque expressed as plaque index ≥ 1. The latter reveals the importance of good oral hygiene.
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