Teeth Flashcards
Silica
Abrasive
Sodium bicarbonate
Abrasive
Sulfur
Bactericidal
Calcium
Inhibits demineralization
Fluorine
Anticariogenic
Chloride
Inhibits calculus formation
Benzyl isothiocyanate
Antiocariogenic
Goadby
Acidogenic and proteolytic bacteria but no specific organism of dental decay and poly microbial disease
Clarke
Introduced microbial succession. Lactobacillus found in established Caries
Van houte found organisms involved were
Low ph non mutans streptococci but later identified atypical strains of plaque
Bifidobacteria
Aka gut inhabitants, Anaerobic and produce lactic acid
Beneficial species
Defectiva, parasanguins, Mitis, Oralis, sanguins
Saliva has immunoglobulins
IgG, IgM, IgA
Stimulation of parasympathetic nerve causes
Watery saliva with less organic material and vasodilation of the gland
Sympathetic results in
Mucous saliva and Inhibition of glands
Serous glands
Parotid - watery amylase rich - glossopharyngeal
Lingual - watery lipase - IX
Mixed glands
Subamandibular - mucin- facial
Sublingual - mucin - facial
Retromolar - mucin- VII and IX
Seromucous glands
Buccal and labial - mucin - VII
Saliva secretion steps
Primary fluid production - isotonic in acini
Saliva modification- hypotonic in ducts less electrolytes
Saliva contains
Cells
Bacteria
Calcium
K 2X than plasma
Enzymes
Increasing salivary flow rate results I
Increase in na cl and hco3 and reduction in phosphate and K
Clearance is delayed when
Unstimulated flow rate is low
Residual volume is high
V max is high
2 digestive enzymes
Lingual lipase - by glands on tongue
Amylase - salivary glands
Lactoferrin
Bacteria static and binds Fe
Lysozyme
Attacks bacterial walls
Proline rich proteins
Protect enamel
Mucin functions
Tissue coating - role in enamel Pellicle, anti-microbial
Lubrication
Aggregation of bacterial cells
Statherins
Produced acinar cells Prevent crystallization of calcium phosphate in ductal saliva and oral fluid