PERI 8120 Lecture Notes - Lecture 48: Dental Plaque, Periodontitis, Gingivitis
28 Jan 2020
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Periodontal microbiology and host response of specific periodontal diseases and microbial testing dr. paula weistroffer, dds, ms. Objectives: identify the primary etiology of periodontal disease. Primary etiology of periodontitis- bacterial plaque: define plaque, calculus and material alba. Material alba- white/cheese-like build up, can have salivary proteins, bacteria, desquamated epithelia, food, no organized structure, easily removed with water. Dental plaque biofilm - made of bacteria in a matrix of glycoproteins and polysaccharides, is a biofilm layer, cannot remove with water. Calculus- hard deposit as result of mineralized plaque, usually has its own layer of unmineralized dental plaque: describe the dental biofilm. Biofilm- pathogens embedded in a matrix, the pathogens adhere to one another and to other surfaces, contains some non-bacterial organisms (virus, fungi, protozoa, archaea: recognize the five locations of subgingival plaque. Factors!!!! (remember this for research: periodontitis: high % of g- anaerobes, elevated spirochetes, highly anaerobic (90%) and g- (75%, p. gingivalis and a. actinomycetemcomitanscan invade host tissue cells.
