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Oral Cavity: Early Indicator of Systemic Disease
• Rapid cellular turnover rate
• Constant assault by microorganisms
• Trauma-intense environment
Systemic Circulation → supplies nutrients & removes waste
• Changes in oral tissues=systemic nutritional disorders
• Nutritional deficiencies=signs & symptoms
• Pain, erythema, tissue atrophy, infections
Functions of Saliva:
• Digestion
• Maintains Oral Health
• Supports Lubrication & Taste
• Functions as a Buffer
• Protects & Heals
The average person produces about _-_._ liters of saliva daily
1-1.5
Filiform Papillae:
• Location: Cover most of the tongue's surface.
• Function: Not involved in taste; help m
Fungiform Papillae:
• Location: Scattered across tip & sides of the tongue.
• Function: Contain taste buds, contributing to the detection of taste
Circumvallate Papillae:
• Location: Back of the tongue, arranged in a V-shape.
• Function: Contain a high concentration of taste buds, especially for bitter tastes.
Foliate Papillae:
• Location: Sides of the tongue near the back.
• Function: Also contain taste buds & are involved in taste detection.
Rapid turnover rate → epithelium of tongue, followed by areas around the lips
• Tongue=edematous (swelling), glossitis (inflammation)
• Angular cheilitis=localized to corners of the mouth (oral commissures)
• Angular cheilosis=includes cracking of the lips
Saliva → composition affects taste
• Aids in speech, taste, eating
• Xerostomia=increased caries, stomatitis (inflammation), gingivitis, increased risk of oral infections
Thiamin (Vitamin B1) “the morale vitamin” Physiological Roles:
• Acts as coenzyme in TCA/Krebs/citric acid cycle.
• Provides energy to brain, heart, & CNS
• Vital for growth, development, & cell function
• Necessary for the synthesis of niacin
Thiamin (Vitamin B1) “the morale vitamin” Sources:
Pork, enriched whole grains, milk, legumes, nuts, peas.
Thiamin (Vitamin B1) “the morale vitamin” Hypo States:
• Beriberi
• Wet Beriberi CVS tachycardia, heart failure, & edema
• Dry Beriberi CNS muscle weakness, numbness, & paralysis
• Wernicke-Korsakoff Syndrome
• Severe alcoholism
• Mental confusion & memory loss
• Nystagmus (involuntary rapid movement of the eyeball)
• Ataxia (gait disorder)
Riboflavin (Vitamin B2) Physiological Roles:
• Energy production, antioxidant activity, fat , carbohydrate, & protein metabolism,
skin & eye health
• Essential for growth & production of RBCs
• Prevents cheilitis, cheilosis, glossitis, & anemia
• Necessary for the synthesis of niacin & metabolism of iron
Riboflavin (Vitamin B2) Sources:
• Milk, green leafy vegetables, nuts, & legumes
• ***Sensitive to light→ this is why milk should be stored in cardboard or opaque
containers
Riboflavin (Vitamin B2) Hypo States:
• Ariboflavinosis
• Angular cheilitis, sore throat, redness/swelling of mouth & throat, dry skin, &
glossitis.
• Prolonged deficiency→ impaired energy production→ fatigue & anemia
Niacin (Vitamin B3) Physiological Roles:
• Energy production
• Essential for RNA & DNA synthesis
• Works w/riboflavin in metabolism of fats & proteins
Niacin (Vitamin B3) Sources :
Meat, fish, enriched grains, leafy green vegetables
Niacin (Vitamin B3) Hyper States :
excessive supplements (NOT food sources) *extended-release better
• Vasodilation, flushing of skin, itching, tachycardia, nausea, vomiting, liver damage
Niacin (Vitamin B3) Hypo States :
maize (corn) diet
• Pellagra **4Dsdermatitis, diarrhea, depression or dementia, death
• Bilaterally symmetrical reddish skin rash (hands, feet, face) is characteristic sign
• Painful stomatitis, lesions in GI tract, glossitis, inflamed gingiva mimicking ulcerative
gingivitis
Pantothenic Acid (Vitamin B5) Physiologic Roles:
• Carbohydrate, fat, & protein metabolism
• Synthesis & degradation of triglycerides, phospholipids, & sterols
• Formation of certain hormones & nerve-regulating substances
Pantothenic Acid (Vitamin B5) Sources:
(abundant in many foods) → Corn, sunflower seeds, tuna, avocado, eggs
Pantothenic Acid (Vitamin B5) Hypo States:
Very rare, though may occur along w/other B-vitamin deficiencies
Pyridoxine (Vitamin B6) Physiologic Roles:
• Protein Metabolism
• Neurotransmitter Synthesis
• Hemoglobin Production
Pyridoxine (Vitamin B6) Sources:
Meat, poultry, fish, bananas, white potatoes, sweet potatoes
Pyridoxine (Vitamin B6) Hypo States:
Rare, though may occur along w/other B-vitamin deficiencies
Pyridoxine (Vitamin B6) Hyper States:
(due to supplementation)
• Peripheral neuropathy (nerve damage) numbness, tingling in limbs
• Ataxia
• Heightened sensitivity to touch
Biotin (Vitamin B7) Physiological Roles:
• Energy metabolism
• Fatty acid synthesis
• Hair, skin, & nail health
Biotin (Vitamin B7) Sources:
Cauliflower,cooked eggs, peanuts, cheese
Biotin (Vitamin B7) Hypo and Hyper States (Rare):
• Prolonged consumption of raw egg whites→contains avidin, which prevents absorption
• Hair thinning/loss, scaly red rash around eyes, nose, & mouth, brittle nails
Folate (Vitamin B9) Physiological Roles:
• DNA & RNA synthesis
• RBC formation→prevents megaloblastic anemia
• Neural tube development→prevents spina bifida
Folate (Vitamin B9) Sources:
Dark green leafy vegetables, citrus fruits, eggs, avocado
Folate (Vitamin B9) Hypo States:
• Fatigue, weakness, irritability
• Megaloblastic anemia
• Glossitis, mouth sores
Folate (Vitamin B9) Hyper States:
(due to over-supplementation)
• Mask vitamin B12 deficiency, delaying diagnosis & leading to neurological damage
MTHFR (methylenetetrahydrofolate reductase) gene is essential for processing _____ properly
folate
Variants of MTHFR gene reduce enzyme activity →
folate deficiency
People w/MTHFR gene variants may need…
supplementation of folate in its active form
Why is Folate and MTHFR Gene Important?
• Folate deficiencies=increased risk for periodontitis & ankyloglossia
• Sensitivity to N2O
• Impaired healing
Cobalamin (Vitamin B12) Physiological Roles:
• RBC production → prevents anemia
• DNA synthesis
• Nervous system function →maintains myelin sheath
• Myelin: lipid substance insulating nerve fibers & effects transmission of nerve impulses
Cobalamin (Vitamin B12) Sources:
Fish, eggs, dairy, beef, fortified nutritional yeast
Cobalamin (Vitamin B12) Hypo States:
Pernicious Anemia→ inability to absorb due to lacking intrinsic factor
• Abnormally large RBCs, glossitis, GI disturbances, weakness, neurological manifestations
• Achlorhydria→decreased hydrochloric acid in stomach
• Glossopyrosis→ unexplained tongue pain/burning
• Loss of filiform & fungiform papillae
• Tongue may be completely smooth, shiny, deeply reddened
Cobalamin (Vitamin B12) Hyper States:
rare
What are Vitamin B12 Injections?
Common treatment for addressing deficiency
• Delivery directly into bloodstream, bypassing digestive system.
• Useful for individuals w/absorption issues & vegans/vegetarians & older adults
Benefits of Vitamin B12 Injections?
• Quickly restore B12 levels
• Prevents megaloblastic anemia & neurological issues
• Improves energy levels, mood, & cognitive function
Multi-Functionality of Nutrients; Vitamin C
• Enhances WBC activity
• Protects from bacterial toxins & plaque microorganisms
• Collagen formation weak collagen leads to gingivitis & poor wound healing
Multi-Functionality of Nutrients; Vitamin A
• Maintains integrity of epithelial tissues
• Oral & oropharyngeal cancers
• Development & maintenance of salivary glands
• Squamous metaplasia=keratin production in salivary glands
• Decreased salivary secretions & xerostomia
• Stimulates growth & metabolism
Multi-Functionality of Nutrients; Vitamin E
• Neutralizes free radicals
• Protects cell membranes
• Prevents periodontal inflammation
• Promotes integrity of mucosal cell membranes