Oral Environment Flashcards
Name 5 oral fluids?
saliva
gingival crevicular fluid (produces oral fluid)
oral bacteria (produces acid)
food debris
epithelial cells
where does saliva come from?
major and minor salivary glands
describe the protective function of oral fluid.
CLEANSING - sallow bacteria goes with saliva
MUCOSAL PROTECTION - dry mouth from alcohol dehydration, mucosa not protected
BUFFERING - can withstand change in pH, bicarbonate in saliva
REMINERALISATION - overtime surface of tooth becomes more mineralised
ANTIMICROBIAL - controls microorganisms by destroying (reduces ability to reproduce)
describe the digestive function of oral fluid.
TASTE - chemicals allow brain to read taste
DIGESTIVE ENZYMES - amylase
LUBRICATES BOLUS - mouth has to be moist from saliva (for chewing/swallowing)
what is xerostomia?
dry mouth
reduction in salivary function
(quality or volume)
why might xerostomia occur?
symptom of salivary gland disease
what might xerostomia do to teeth?
- increased incidence of dental caries
(buccal and labial surfaces) - white spots
(surface intact but colour change)
features of the salivary gland.
(endo or exo? type of secretion? arrangement?)
exocrine
serous or mucous secretions
compound tubulo-acinar arrangement
what are major salivary glands?
anatomically distinct and identifiable glands
what are minor salivary glands?
diffuse collections of glandular tissue lying in the lamina propria
name the 3 pairs or major salivary glands.
parotid
submandibular
sublingual
name the 4 minor salivary glands are where they are found?
buccal - cheek
labial - lip
lingual - tongue
palatal - hard and soft palate
what is the septa?
connective tissue that separates multiple acinus structures
what type of secretion does the buccal (minor) salivary gland produce?
mucous
what type of secretion does the labial (minor) salivary gland produce?
mucous
