endodontic instruments and materials E lec Flashcards
give examples of endodontic instruments and materials
anaesthesia isolation access to pulp canal intra canal medication temporisation obturation preparation: which involves mechanical and chemical
for endo treatment on a upper central incisor what LA would we need
buccal and palatal infiltration
with regards to an upper molar which areas would we need to anaesthetise
buccal and palatal infiltration
for a lower molar which blocks would we need
ID block
long buccal nerve
lingual block
why might the level of anaesthesia not be sufficient for pulp removal
hyperaemic pulp
infection
patient factors
why might a hyperaemic pulp not allow LA to work
increased vascularity which removes the LA solution more rapidly from the area
why might LA not work in areas of infection/inflammation
hyper-excitability of the nerves esp C fibres which means LA might not be able to block conduction
if LA was not able to work which additional techniques can we use
intraligamentary
intrapulpal
intraosseous of LA
or a sedative
what do we use to isolate the tooth during RCT
rubber dam
what are the main functions of rubber dam during endo treatment
protection of airway protection from irritants prevention of contamination improved visuals and access comfort of the patient
what else do we use during endo treatment
oraseal putty dental floss small flexible aspirator tip gauze wedgit
why do we use the gauze
for patient comfort
why do we use floss
to secure the dental clamp and prevent swallowing
why do we use wedgit
to secure rubber dam
why do we use oraseal
to seal the tooth from water
what equipment is used in endo treatment
mirror tweezers shank excavator flat plastic explorer probe plugger for gutta percha measuring device file stand
what should we consider before endodontic treatment starts
the cronw is restoration
caries and defective restorations removed
sound coronal restorations
what should we look for on the x ray
Number of roots Number of canals Morphology of roots/canals Extent of current restoration Presence of caries Presence of canal sclerosis/ pulp stones/ previous RCT/ fractured instruments
what are the aims of coronal access
remove the roof of pulp chamber no damage to pulpal floor straight line access conservative retentive for temp restoration
what do we need for finding canal
good light
magnification
explorer
what might also be used to remove dentine around canal orifces
ultrasonic instruments
what do we try to achieve in cleaning and shaping
remove as many bacteria as possible and allow for adequate filling or obturation
how do we prepare the root canals
mechanical + chemical= chemomechanical
how do we mechanically prepare the root
Coronal followed by apical preparation (step down)
Files and Gates Glidden burs used to produce a smooth and gentle taper.
Hand files and rotary files available
K-files
