The search for the etiologic agents of periodontal diseases has been in progress for over a century. If you continue browsing the site, you agree to the use of cookies on this website. 33. Periodontics MCQs - Periodontal Microbiology # Of the following four bacterial species, which is least likely to be found in plaque ? Some studies attempted to determine whether specific microorganisms were found in lesion sites as compared to healthy sites. A, Streptococcus mitis are gram-positive, fast-growing, facultatively anaerobic bacteria that are easy to culture on a blood-agar plate. In response to this perception I was asked to discuss recent literature in this field at the 1986 Annual Meeting of the American Association of Dental Research. In certain ways, periodontal diseases may be among the most unusual infections of the human.In contrast to the outer surface of most parts of the body, the outer layers of the tooth do not “shed” and thus microbial colonization (accumulation) is facilitated. Human fetus is sterile but after passing through birth canal it acquires vaginal and fecal microorganisms By 2nd day Anaerobic flora can be detected in infant edentulous mouth Dr Saif Khan 209/10/13 3. INTRODUCTION characterized by inflammation and degeneration of the teeth Periodontal disease is one of the major dental illnesses that affect millions of people around the globe. If you continue browsing the site, you agree to the use of cookies on this website. Others questioned the relationship of spirochetes to periodontal diseases. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 36. Periodontal Microbiology 2. While certain infections follow this pattern, more commonly, colonization by a pathogenic species does not lead to overt disease, at least immediately. Corn Cob Formation (Listgarten et al, 1973)– Central Gram Negative Filamentous Core Supports Outer Coccal Cells Which Are Firmly Attached By Inter-bacterial Adherence Or Coaggregation. Which of the following bacteria is the most important in causing periodontal disease? Others studies sought differences in the microorganisms in subgingival plaque samples taken from subjects with clinically different forms of periodontal disease or periodontal health. Periodontal microbiology 1. Now customize the name of a clipboard to store your clips. See our Privacy Policy and User Agreement for details. Basic concepts of immunity and inflammation 6. Periodontal disease; ; Delivery Systems. See our Privacy Policy and User Agreement for details. Christina Popova a, V elitchka Dosseva-Panova a & Vladimir P anov b. a Medical University of Sofia, Faculty of Dental Medicine, Sofia, Bulgaria. The search started in the “golden age of microbiology” (approx. Dr. Fletcher is currently the Assistant Dean for Graduate Student Affairs in the School of Medicine at Loma Linda University. If you continue browsing the site, you agree to the use of cookies on this website. Pathogenesis of paque associated periodontal diseases 8. Looks like you’ve clipped this slide to already. 35. Microbiology of. A clear halo surrounding the colonies appears through hemolytic activity. Microbiology of periodontal disease . Periodontal infections and another biofilm-induced disease, dental caries, are arguably the most common infectious diseases affecting the human. Periodontal pathogens such as P. gingivalis, Tannerella forsythia, and Treponema denticola are asaccharolytic and strongly proteolytic. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Microbial Etiology of Periodontal Disease, Dr. Lee 2 Dental plaque biofilm infection Ecological point of view Ecological community evolved for survival as a whole Complex community of more than 400 bacterial species Dynamic equilibrium between bacteria and a host defense Adopted survival strategies favoring growth in plaque “Selection” of “pathogenic” bacteria among microbial community Oral mucosal and salivary gland infections . See our User Agreement and Privacy Policy. Start studying Perio Microbiology Powerpoint 2. This means that this microbiota lives in harmony with its host, but under specific conditions (increased mass and/or pathogenicity, suppression of commensal or beneficial bacteria and/or reduced host response), disease can occur. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Twenty-four patients (10 males and 14 females, aged 14.6 ± 1.0 years) were included in this investigation. On this basis, a test to measure protease activity by degradation of the substrate N-benzoyl-dl-arginine-2-naphthylamide has been … There is a perception of conflicting data and opinions among research laboratories that are studying periodontal microbiology. (Gram-negative bacteria,short, pleomorphic rods) Fusobacterium sp. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Procedures such as dental scaling can radically alter the composition of the periodontal pocket flora of diseased sites and shift the balance in favour of colonization of such sites by flora that are associated with health. Subgingival microflora and periodontal disease J Clin Periodontol. And plaque biofilms show you periodontal microbiology ppt relevant ads of these diseases that are studying periodontal microbiology in. 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