Oral and Dental Health Lecture Slides

Oral and Dental Health Lecture Slides - Nutrition for Oral...

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Nutrition for Oral and Dental Health
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Oral Health Diet and nutrition play a key role in —Tooth development —Gingival and oral tissue integrity —Bone strength —Prevention and management of diseases of the oral cavity
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Effects of Nutrient Deficiencies on Tooth Development
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Dental and Oral Health Teeth are made from protein matrix that is mineralized with collagen (requiring vitamin C), calcium, and phosphorus (requiring vitamins D and A)
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Anatomy of a Tooth
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Dental Caries Infectious disease of teeth in which organic acid metabolites lead to gradual demineralization of enamel; proteolytic destruction of tooth structure Any tooth surface can be affected.
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The Decay Process Plaque formation: sticky mix of microorganisms, protein, polysaccharides Bacteria metabolizing fermentable carbohydrate produce acid Acid production: oral pH<5.5 allows tooth demineralization Saliva function: rinses away food; neutralizes acid; promotes remineralization Caries patterns:pattern depends on cause
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Early Childhood Caries Also called “baby bottle tooth decay” Nursing bottle caries—putting baby to bed with a bottle of sweetened liquid (juice, Kool-Aid, etc.) Front teeth rapidly develop caries Common among Native Americans Wean children before age 2 from bottle
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Early Childhood Caries (From Swartz MH. Textbook of Physical Diagnosis, History, and Examination, 3rd ed. Philadelphia: W.B. Saunders, 1998.)
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Dental Caries—cont’d Streptococcus mutans —most common bacteria involved Fermentable Carbohydrate Time Drop in salivary pH to below 5.5
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Dental Caries—cont’d Cariogenicity of foods Frequency of consumption of fermentable Carbohydrate Food form—slowly dissolving Food combinations Nutrient composition of food/beverages Timing (end of meal)
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Medical Sequelae of Dental Caries Bacteria from tooth decay can enter bloodstream and inoculate heart valves, cause bacterial endocarditis Oral-pharyngeal secretions inoculated with bacteria can cause aspiration pneumonia
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Fluoride Primary anticaries agent Water fluoridation Fluoridated toothpastes Oral rinses Dentrifices Beverages made with fluoridated water
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Recommendations for Fluoride Supplementation (Data from American Dietetic Association: Position of ADA: The impact of fluoride on dental health. J. Am Diet Assoc. 94:1428, 1994.) * Milligrams of supplemental fluoride recommended according to fluoride concentration in drinking water.
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Cariogenic vs. Cariostatic
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Oral and Dental Health Lecture Slides - Nutrition for Oral...

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