PERI 8120 Lecture Notes - Lecture 35: Dental Plaque, Dysbiosis, Biofilm
28 Jan 2020
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Perio microbiology key lecture for understanding the key etiologies. what the commensal bacteria is. And also know: commensal bacteria = bacteria that are harmless in normal circumstances, symbiosis = when bacteria are all living in harmony in the mouth, dysbiosis = when harmony is disrupted and disease can occur. Slide 6: know the niches/ecosystems in the oral cavity. Know that the epithelium is different throughout the mouth. Know why there are 6 different niches in the oral cavity: 6 niches. Sub g regions next to a hard surface. Saliva unique because it forms the biofilm: material alba organization, dental plaque. Slide 7: know difference between materia alba, dental plaque (biofilm), and calculus. White accumulation with proteins and food bits but not tons of bacteria and no. Mostly bacteria in a matrix of glycoproteins and extracellular polysaccharides. Hard deposit from mineralization of plaque, usually covered by a layer of plaque: calculus.
