ELECTRONIC PULP TEST –

 Least reliable test
 Here vitality is determined by nerve fibres not by the vascular supply, which is the true determinant of vitality.
 Isolate >> coat electrode with viscous conductor >> apply on dried enamel only
 Contra indicated in pacemaker cases
 False(lying that) negative maybe seen in:
o Immature / open-apex / young permanent teeth ( because of poor A-delta fibre innervation )
o Patient under alcohol / analgesics
o Calcified tooth
o Recent trauma cases ( because the nerve fibres may be hyper-polarised / numb )

Always wait n watch  recall after 3 days >> if EPT no response >> Then go for RCT