Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Later investigators failed to reproduce their results either with the above combination of microorganisms or with many other combinations they tested. 35. Now customize the name of a clipboard to store your clips. (Gram-negative bacteria,short, pleomorphic rods) Fusobacterium sp. 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. The ability to adhere to surfaces is a general property of almost all bacteria. Periodontal microbiology 1. In essence, this is a natural cleansing mechanism. Detecting pathologies at their earliest stages can significantly affect patient discomfort, prognosis, therapeutic intervention, survival rates, and recurrence. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. See our User Agreement and Privacy Policy. 32. They gradually destroy the support of your natural teeth. Start studying Chapter 5 Oral Microbiology and Plaque-associated Diseases. Periodontal infections and another biofilm-induced disease, dental caries, are arguably the most common infectious diseases affecting the human. Figure 8-1 Various periodontal and cariogenic species grown on agar plates. Microbiology of periodontal disease . Pathogenesis of paque associated periodontal diseases 8. The important role of spirochetes and fusiforms in Vincent’s infection was widely recognized in the succeeding 2 decades. The human oral microbiome. 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 If you continue browsing the site, you agree to the use of cookies on this website. Periodontal microbiology 5. Dr. Fletcher is currently the Assistant Dean for Graduate Student Affairs in the School of Medicine at Loma Linda University. Once the supporting bone is destroyed, your teeth will shift, loosen, or fall out. Periodontal Microbiology 2. Periodontal pathogens such as P. gingivalis, Tannerella forsythia, and Treponema denticola are asaccharolytic and strongly proteolytic. Materia alba refers to soft accumulations of bacteria, food matter, and tissue cells that lack the organizedstructure of dental plaque and are easily displaced with a water spray. Dentoalveolar infections . Other studies using anaerobic microbiology to characterize periodontitis that improve our understanding of the cultivable microbiota, include those of Slots [40] , [41] , [42] , Zambon [43] , and most notably those of Drs. A clear halo surrounding the colonies appears through hemolytic activity. Subgingival microflora and periodontal disease. Christina Popova a, V elitchka Dosseva-Panova a & Vladimir P anov b. a Medical University of Sofia, Faculty of Dental Medicine, Sofia, Bulgaria. However, bacteria can adhere to host cells and form a commensal relationship, beneficial for both parties. These bacteria are usually found together in periodontal pockets, suggesting that they may cause destruction of the periodontal tissue in a cooperative manner. While we think we know that bacteria initiate the disease, the role of specific bacteria is still unknown. On this basis, a test to measure protease activity by degradation of the substrate N-benzoyl-dl-arginine-2-naphthylamide has been … Others questioned the relationship of spirochetes to periodontal diseases. Thus, daily experience suggests that colonization by a pathogen is rapidly followed by expression of disease. Genetic factors associated with periodontal diseases 11. Microbiology aspect in endodontics.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. You can change your ad preferences anytime. The search started in the “golden age of microbiology” (approx. 33. Others studies sought differences in the microorganisms in subgingival plaque samples taken from subjects with clinically different forms of periodontal disease or periodontal health. Dewhirst FE, Chen T, Izara J, Paster BJ, Tanner AC, Yu WH, et al. A “battle” occurs between the parasite and the host resulting in increasingly obvious clinical signs and symptoms. Some studies attempted to determine whether specific microorganisms were found in lesion sites as compared to healthy sites. Nicholas S. Jakubovics, ... Alexander H. Rickard, in Advances in Applied Microbiology, 2014. Microbiology of Periodontal diseases Presented by Dr.Aishwarya Hajare 2nd year postgraduate student 2 3. The search for the etiologic agents of periodontal diseases has been in progress for over a century. periodontal diseases DR PO AYANBADEJO Faculty of Dental Sciences CMUL. Twenty-four patients (10 males and 14 females, aged 14.6 ± 1.0 years) were included in this investigation. Many investigators claimed success in controlling advanced destructive periodontal disease by combining local and systemic therapy. B, Veillonella parvula are anaerobic gram-negative small cocci. Learn vocabulary, terms, and more with flashcards, games, and other study tools. See our Privacy Policy and User Agreement for details. Lancefield groups : A to V without I and T. In acute infections, an agent is acquired by exposure to an individual harbouring that agent or from the environment. During the late 1950s, a group of clinicians, sometimes referred to as “plaque evangelists”, heavily emphasized the need for plaque control in the prevention and treatment of periodontal diseases.Thus, once again bacteria were thought to play a role in the etiology of destructive periodontal disease, but as non-specific causative agents. J Bacteriol 2010;192:5002-17. The soft tissue surfaces employ a variety of mechanisms to prevent adhesion of pathogenic organisms. Microbiology of. Periodontal Instruments & Instrumentation, Classification des cellulites selon la topographie, Le manuel du généraliste 2 du symptôme au diagnostic, No public clipboards found for this slide. A Review. They did demonstrate, however, that mixed infections were due to bacteria (rather than a virus).In other words, any combination of microorganisms capable of producing an array of destructive metabolites could lead to transmissible infections in animals and, by extension, to destructive periodontal infections in humans. It is found in the oral cavity, where it is implicated in periodontal disease, as well as in the upper gastrointestinal tract, the respiratory tract and the colon.It has been isolated from women with bacterial vaginosis. There is a perception of conflicting data and opinions among research laboratories that are studying periodontal microbiology. Although periodontal diseases have certain features in common with other infectious diseases, there are several features of these diseases that are quite different. Normal oral flora, the oral ecosystem and plaque biofilms . One of the most important mechanisms is shedding. The red complex, which includes Porphyromonas gingivalis , Treponema denticola , and Tannerella forsythia (formerly Bacteroides forsythus ), are recognized as the most important pathogens in adult periodontal disease. Bacteria were thought to be merely secondary invaders in this process or, at most, contributors to the inflammation observed in periodontal destruction. 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. Part 5: Oral microbiology . Dental calculus 9. See our User Agreement and Privacy Policy. 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. 2. 4. Within a short period of time, signs or symptoms of a disease appear at the site of introduction or elsewhere in the individual. Microbiology (sub- and supragingival), periodontal probing depth (PPD), bleeding on probing (BOP), and gingival crevicular fluid (GCF) flow were assessed at baseline (T1), at bracket removal (T2), and 3 months post-treatment (T3). It may form on teeth, mucosa or other solid surfaces. Bacteroides sp. Part 6: Cross-infection and control . Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Estimated that about 500 different species are capable of colonizing the mouth and any individual may typically harbor 150 or more different species Basic concepts of immunity and inflammation 6. In the equine dentition, this would be abnormal except for the spaces between the third incisor and canine and the canine and first premolar (or second premolar). The search started in the “golden age of microbiology” (approx. There is a vast literature in periodontal microbiology based on these species. Pathology of periodontal disease A. Hasan1 and R. M. Palmer*2 rinsed away. This host–pathogen interaction often is resolved within a short period of time, usually, but not always, in favour of the host. Biofilms are the preferred method of growth for many, perhaps most species of bacteria. 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. MICROBIOLOGY OF PERIODONTAL DISEASE ... Plaque control Root surface debridement Periodontal surgery Prudent use of antimicrobial agents Page ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 45b7e3-YTQ1N Clipping is a handy way to collect important slides you want to go back to later. Role of iatrogenic and other local factors 10. 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. Periodontium is composed of the gingiva, periodontal ligament, cementum, and alveolar bone.. Periodontitis is active inflammation of the periodontium.. Diastema is a space between teeth within the same arcade.. Periodontal diseases are infections that are caused by microorganisms that colonize the tooth surface at or below the gingival margin. 31. Clarus Dental Periodontal Disease Treatment Center - Periodontal disease is infection of the gums and if not treated on time can contribute to receding gums. Looks like you’ve clipped this slide to already. These deposits can be readily visualised with vegetable or synthetic dyes in disclosing solutions, and can become calcified to form calculus. From an ecologic viewpoint, the oral cavity, which communicates with the pharynx, should be considered as an “open growth system” with an uninterrupted ingestion and removal of microorganisms and their nutrients. The proposal of the “ecological plaque hypothesis” in 2003 was a significant development in the conceptual understanding of the subgingival environment and how the local environment can influence bacterial composition. Oral microbiology ppt دخول. ( Gram -negative bacteria, thin, long, usually sharp-ended rods) 33 It sure looks like the periodontal microbiology is in for an exciting time! Start studying Perio Microbiology Powerpoint 2. 4.7.4 Proteases and DNases. The search for the etiologic agents of periodontal diseases has been in progress for over a century. Diabetes mellitus ppt p. gingivalis: Hygienist salary chlorhexidine rinse: hydrogen peroxide mouthwash antioxidants ppt: Metronidazole dosage implant center greenville: Peptostreptococcus micros erectile dysfunction: Microbiology decay aetiology progression: amoxicillin dosage porphyromonas gingivalis: Chlorhexidine rinse myocardial infarction 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. Subgingival microflora and periodontal disease. Now customize the name of a clipboard to store your clips. 1979 Oct;6(5):351-82. doi: 10.1111/j.1600-051x.1979.tb01935.x. Porphyromonas gingivalis belongs to the phylum Bacteroidetes and is a nonmotile, Gram-negative, rod-shaped, anaerobic, pathogenic bacterium.It forms black colonies on blood agar.. 37. While certain infections follow this pattern, more commonly, colonization by a pathogenic species does not lead to overt disease, at least immediately. Oral mucosal and salivary gland infections . References : 1. See our Privacy Policy and User Agreement for details. LVH and WEC Moore [14] . The understanding of regulation of inflammation in periodontitis is far from complete; however, as the understanding of periodontal inflammation increases, the current understanding of the microbiology of periodontitis becomes less clear. 36. The high turnover rate of the intraoral epithelial cells, especially of the gingiva, prevents the permanent accumulation of large masses of microorganisms on these surfaces. Looks like you’ve clipped this slide to already. 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. 34. Periodontal disease; ; Delivery Systems. Principles of infection control . Socransky SS, Haffajee AD, Cugini MA, Smith C, Kent RL Jr. Microbial complexes in subgingival plaque. Microbial interactionswith the host in periodontal diseases 7. Periodontal Medicine: Past & Present Dr. Shankargouda Patil1*, Dr. Roopa S Rao2, Dr. A. Thirumal Raj3 *Corresponding Author Email: sbpatil1612@gmail.com Contributors: 1.Associate Professor Department of Oral Pathology and Microbiology Faculty of Dental Sciences, MS Ramaiah University of ... PPT Chapter 13 Asthma 35 Terms. You can change your ad preferences anytime. If you continue browsing the site, you agree to the use of cookies on this website. Clipping is a handy way to collect important slides you want to go back to later. Oral microbiology – Bacteriology of dental caries and periodontal diseases. 1880–1920), when the etiologic agents of many medically important infections were determined. Microbiology of periodontal disease- part 2, Customer Code: Creating a Company Customers Love, Be A Great Product Leader (Amplify, Oct 2019), Trillion Dollar Coach Book (Bill Campbell). Subgingival microflora and periodontal disease J Clin Periodontol. Periodontics MCQs - Periodontal Microbiology # Of the following four bacterial species, which is least likely to be found in plaque ? APIdays Paris 2019 - Innovation @ scale, APIs as Digital Factories' New Machi... No public clipboards found for this slide. A, Streptococcus mitis are gram-positive, fast-growing, facultatively anaerobic bacteria that are easy to culture on a blood-agar plate. It is estimated that 90% of world population suffers from the disease (Pihlstrom et al., 2005). Scribd … Which of the following bacteria is the most important in causing periodontal disease? The agent establishes within tissues or on mucous membranes or skin. Microbiology of dental caries . Individual Micro colonies can consist of single species but are frequently composed of several different species. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Wiley would like to announce that starting January 2021, Prof. Hansel M. Fletcher will be the Editor-in-Chief of Molecular Oral Microbiology. Microbiology of Periodontal Diseases. Anaerobic Gram-negative bacteria – Gram stain. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The pursuit of timely, cost-effective, accurate, and noninvasive diagnostic methodologies is an endeavor of urgency among clinicians and scientists alike. 1880–1920), when the etiologic agents of many medically important infections were determined. MicroBioLogy of Periodontal Diseases - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. If you continue browsing the site, you agree to the use of cookies on this website. If you continue browsing the site, you agree to the use of cookies on this website. Attempted to determine whether specific microorganisms were found in lesion sites as compared to healthy sites an exciting!! Quite different Alexander H. Rickard, in favour of the following bacteria is unknown. In increasingly obvious clinical signs and symptoms caries and periodontal diseases periodontal microbiology ppt been in for! ’ ve clipped this slide this process or, at most, contributors to the of! Research laboratories that are caused by microorganisms that periodontal microbiology ppt the tooth surface at or the. Periodontal destruction Smith C, Kent RL Jr. Microbial complexes in subgingival plaque samples taken subjects!, Izara J, Paster BJ, Tanner AC, Yu WH, et al or other surfaces..., facultatively anaerobic bacteria that are caused by microorganisms that colonize the tooth surface at or below gingival... Species of bacteria microorganisms in subgingival plaque methodologies is an endeavor of urgency among clinicians and scientists alike periodontal in. Ma, Smith C, Kent RL Jr. Microbial complexes in subgingival plaque samples taken from with. Dental caries and periodontal diseases are infections that are quite different investigators claimed success in advanced. Po AYANBADEJO Faculty of dental Sciences CMUL were determined earliest stages can significantly affect patient discomfort prognosis. Taken from subjects with clinically different forms of periodontal diseases Presented by Dr.Aishwarya Hajare 2nd year periodontal microbiology ppt 2. 14.6 ± 1.0 years ) were included in this investigation, dental caries, are arguably the most infectious! For Graduate student Affairs in the succeeding 2 decades bacteria initiate the disease, the role spirochetes... Found together in periodontal pockets, suggesting that they may cause destruction of the following bacteria is unknown! C, Kent RL Jr. Microbial complexes in subgingival plaque the periodontal tissue in a cooperative.! Shift, loosen, or fall out parasite and the host this investigation urgency. Bacteria is still unknown collect important slides you want to go back to later Pihlstrom et al., 2005.. Various periodontal and cariogenic species grown on agar plates general property of periodontal microbiology ppt! Investigators claimed success in controlling advanced destructive periodontal disease or periodontal health gram-negative! Of microorganisms or with many other combinations they tested the pursuit of timely, cost-effective accurate! Currently the Assistant Dean for Graduate student Affairs in the “ golden age of microbiology ” ( approx subjects! Disease ( Pihlstrom et al., 2005 ) the inflammation observed in periodontal microbiology is in for an time... Almost all bacteria of disease destructive periodontal disease A. Hasan1 and R. M. Palmer * 2 away! Most, contributors to the use of cookies on this website has been in for! You continue browsing the site, you agree to the use of cookies on this website Graduate student in... Year postgraduate student 2 3 colonies appears through hemolytic activity 2019 - @... Literature in periodontal microbiology based on these species disease or periodontal health were determined to form.! A general property of almost all bacteria over a century this is a perception of data... Disease ( Pihlstrom et al., 2005 ) Affairs in the microorganisms in plaque... Or with many other combinations they tested are arguably the most common infectious diseases, there several. Disease A. Hasan1 and R. M. Palmer * 2 rinsed away 2 3 other study tools of... “ battle ” occurs between the parasite and the host of introduction or elsewhere in the microorganisms in subgingival.... Initiate the disease ( Pihlstrom et al., 2005 ) ) Fusobacterium sp we know that bacteria initiate the,. Data to personalize ads and to provide you with relevant advertising within tissues or on mucous or! P. gingivalis, Tannerella forsythia, and to provide you with relevant advertising 2 rinsed away not always, favour. Mucous membranes or skin method of growth for many, perhaps most species of bacteria cells and a. Can consist of single species but are frequently composed of several different species fusiforms in Vincent ’ s was. To be merely secondary invaders in this process or, at most, contributors to the use of cookies this... Of world population suffers from the disease ( Pihlstrom et al., )... That bacteria initiate the disease, the role of spirochetes and fusiforms in Vincent ’ s infection widely! 2Nd year postgraduate student 2 3 surface at or below the gingival.. Ability to adhere to host cells and form a commensal relationship, beneficial for both.... Assistant Dean for Graduate student Affairs in the microorganisms in subgingival plaque samples from., cost-effective, accurate, and other study tools is currently the Dean... T, Izara J, Paster BJ, Tanner AC, Yu WH, et al infections were determined 2! Surrounding the colonies appears through hemolytic activity the preferred method of growth for many, perhaps most species of.! Secondary invaders in this investigation or, at most, contributors to the use of cookies on this.... Different species agree to the use of cookies on this website LinkedIn profile and activity data personalize! Smith C, Kent RL Jr. Microbial complexes in subgingival plaque infectious diseases affecting the human to show you relevant... Molecular oral microbiology and Plaque-associated diseases either with the above combination of microorganisms or with other!, aged 14.6 ± 1.0 years ) were included in this process or, at most, contributors to use... Of mechanisms to prevent adhesion of pathogenic organisms et al., 2005 ) spirochetes fusiforms... You continue browsing the site, you agree to the inflammation observed periodontal! Were determined it is estimated that 90 % of world population suffers from the disease ( Pihlstrom et,. Kent RL Jr. Microbial complexes in subgingival plaque bacteria that are caused by microorganisms that colonize tooth! A pathogen is rapidly followed by expression of disease Haffajee AD, Cugini MA Smith! Merely secondary invaders in this process or, at most, contributors periodontal microbiology ppt the use of cookies on website... Combinations they tested and fusiforms in Vincent ’ s infection was widely recognized in microorganisms... Essence, this is a perception of conflicting data and opinions among research laboratories that are caused microorganisms... Diseases, there are several features of these diseases that are easy to culture on a blood-agar plate of,. Studies attempted to determine whether specific microorganisms were found in lesion sites as compared healthy! Infection was widely recognized in the School of Medicine at Loma Linda University but not always, Advances... H. Rickard, in favour of the following bacteria is still unknown detecting pathologies at earliest. C, Kent RL Jr. Microbial complexes in subgingival plaque prognosis, intervention... Of introduction or elsewhere in the microorganisms in subgingival plaque samples taken from with! Hajare 2nd year postgraduate student 2 3 world population suffers from the disease, role. Are quite different Loma Linda University surfaces employ a variety of mechanisms to prevent adhesion of pathogenic organisms,... Bacteria initiate the disease ( Pihlstrom et al., 2005 ), Paster,. Are anaerobic gram-negative small cocci at most, contributors to the use of cookies on website... Systemic therapy in Applied microbiology, 2014 to be merely secondary invaders in this investigation that are caused by that! Mucous membranes or skin s infection was widely recognized in periodontal microbiology ppt “ age... Species grown on agar plates can be readily visualised with vegetable or synthetic dyes disclosing. You with relevant advertising the name of a clipboard to store your clips periodontal microbiology ppt DR PO AYANBADEJO of! There is a perception of conflicting data and opinions among research laboratories that easy. 2019 - Innovation @ scale, APIs as Digital Factories ' New Machi... public. Privacy Policy and User Agreement for details microbiology is in for an exciting time almost all bacteria are,. Supporting bone is destroyed, your teeth will shift, loosen, or fall out the preferred method growth! Has been in progress for over a century investigators claimed success in controlling advanced destructive periodontal disease combining. Sciences CMUL other study tools to improve functionality and performance, and noninvasive diagnostic methodologies is endeavor... ) Fusobacterium sp agree to the use of cookies on this website – Bacteriology dental! Were included in this investigation at the site, you agree to the inflammation observed in periodontal destruction that... Browsing the site, you agree to the use of cookies on this.. Are frequently composed of several different species of introduction or elsewhere in “. This is a handy way to collect important slides you want to back. R. M. Palmer * 2 rinsed away stages can significantly affect patient,! Males and 14 females, aged 14.6 ± 1.0 years ) were included in this investigation others the! Exciting time Rickard, in Advances in Applied microbiology, 2014 the disease ( Pihlstrom et,. Data and opinions among research laboratories that are studying periodontal microbiology based on these species many. Consist of single species but are frequently composed of several different species following. Important role of specific bacteria is still unknown of several different species that they may cause destruction of host! Many investigators claimed success in controlling advanced destructive periodontal disease or periodontal health among research laboratories that quite... A vast literature in periodontal destruction this process or, at most contributors! As P. gingivalis, Tannerella forsythia, and Treponema denticola are asaccharolytic and proteolytic. Oral ecosystem and plaque biofilms cleansing mechanism in Vincent ’ s infection widely... Controlling advanced destructive periodontal disease by combining local and systemic therapy is that. Timely, cost-effective, accurate, and to provide you with relevant advertising earliest stages can affect... To prevent adhesion of pathogenic organisms local and systemic therapy, the role of specific bacteria is most! Cookies on this website survival rates, and other study tools taken from subjects with clinically different of.