tomorrow Flashcards
wedge or v shaped cervical lesion created by the stresses of lateral or eccentric tooth movement during occlusal function bruxing or parafunctional activity resulting in enamel microfractures
abfraction
repeated rubbing of a tooth surface with a toothpick or wooden stick
burnishing
transient pain arising from exposed dentin typically in responce to a stimululs which cannot be explained as arising from any other form of dental defect and subsides quickly when stimulus is removed
dental hypersensitivity
currently accepted mechanism for pain impulse transmission to the pulp as a result of fluid movement
hydrodynamic theory
dentin locate dbetween dentinal tubules
interubular dentin
increased deposition of minerals into tubules that become more minerilizezd with increasing age resulting in thicker schlerotic dentin
intratubular or pertiublar dentin
reduction of the resting potential of the nerve membrane so that a nerve impulse is fired
neural deopolarlization mechanism
creates the nerve impulse
depolarilization
restored
repolarized
the passage of fluids and soloutions of lesser concentration through a selective membrane to one of greater solute concentration
osmosis
open obstructed a patent dentin tubule allows fluid flow to signal pain many desentiizing agents work by decreasing the patentcy of the tubule
patent
specific type of scientific expierment that is the gold standard for a clinical trial
Randomized clinical trials
dentin that is secretely slowly over time after root formation to wall of the pulp from fluid flow with dentin tubules following a stimulus
secondary dentin
has been referred to as grinding debris from instrumentation or other devices applied to tooth
smear layer
a type of dentin formed along the pulpal wall or root canal as a protective mechanism in responce to trauma
tertiary reparitive dentin
contact with tooth brush and other oral hygiene devises eating utensils dental instruments and frictionf from prosthetithc devices such as denture clasps
tactile
temp change caused by hot and cold food and beverages
thermal
deyhydration of oral fluids from high volume evacation or application of air to dry teeth during intraoral proceudres
evaporative
alteration of pressure in dentin tubules through a selective membrane
osmotic
in foods and bevarages such as citrus fruits, condiments spices wines
chemical
portions of tooth covered by enamel on the crown and cementum on the root
dentin
highly innervated with nerve cell fiber endings that extend just beyond the dentiopupal interface of the dentinal tubules
pulp
nerve fiber endings extend just beyond the dentin pulpal junction and wind around the odontoblatsic processess
nerves react the same through neural depolarilization mechanism
the sequence of gingival recession, loss of cementum or enamel, and subsequent dentin exposure can result in
hypersenstivity
hypersensitivity may be a clinical outcome of
erosion
erosion can occurs from
dietary acids
dietary acid results in an immediate drop in oral ph after normal salivary neutralization a physiologic ph of
7 re establishes within minutes
wedge shaped cervical lsion has a questionalble etiology
lateral occlusal stresses or bruxing
enamel rods chip away from cervical area of tooth
abfraction
currently accpted explanation for transmission of stimuli from the outer surface of the dentin to pulp
hydrodynamic theory 1960s by brannstorm
There are several mechanisms by which desensitization can occur naturally over time:
schlerosis of denitn
secondary dentin
smear layer
calculus
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