Pulp sensitivity testing Flashcards
what does pulp sensibility test
sensory nerve fibres - Alpha delta nerve fibres in the dentine-pulp complex
what is the most accurate determinant of pulp vitality
vascular supply
NOT PULPAL INNERVATION
what fibres innervates dentine
A delta and A beta fibres
what does stimulation of A delta and A beta fibres result in
acute sharp pain - movement of dentinal fluid
what fibres innervate the body pulp
unmyelinated C fibres
what does stimulation of unmyelinated C fibres result in
dull burning pain - pain can radiate
4 types of pulp sensibility testing
thermal
electric pulp
test cavity prep
LA
what does a normal response imply
vital or RP
what does an intense, prolonged response imply
IP
what does no response imply
necrotic pulp
false negative (calcified canal, immature apex, recent trauma)
what does an increased response to heat imply
pulpal/ periapical pathology
what does cold testing differentiate
RP and IP
cold test IP result
pain lingers after removal of stimulus
cold test RP result
pain subsides on removal of stimulus
what is used for cold tests
ethyl chloride 5 degrees
endofrost (propane/ butane/ isobutane) -50 degrees