Inferior alveolar nerve block

1. Inferior Alveolar Nerve BlockInferior Alveolar Nerve Block
Technique for Local Anesthesia
For dental students
By
Ehtewish، H

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Local Anesthetics RolesLocal Anesthetics Roles
● Decrease intra-operative and postoperative
pain.
● Increase patients cooperation.

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Local anesthetic instrumentsLocal anesthetic instruments
●
Anesthetic carpulesAnesthetic carpules
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SyringeSyringe
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NeedleNeedle

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Nerve blocks:Nerve blocks:
Local anesthetic deposited near main nerveLocal anesthetic deposited near main nerve
trunk andtrunk and
is usually distant from operative site.is usually distant from operative site.

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Technique :Technique :
Target:-Target:-
Entire mandibular quadrant and gingivaEntire mandibular quadrant and gingiva
(except buccal gingiva of molars).(except buccal gingiva of molars).

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TechniqueTechnique
● 1- Place thumb in coronoid notch and visualize line
extending from thumb back to the pterygomandibular
raphe (about 2/3 way up the finger nail).

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TechniqueTechnique

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TechniqueTechnique

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TechniqueTechnique
●
2- Replace thumb with mouth mirror or2- Replace thumb with mouth mirror or
retractorretractor to preventto prevent accidental injection.accidental injection.

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●
3- Hold needle3- Hold needle parallelparallel to occlusal planeto occlusal plane
with bevel away from bone and approachwith bevel away from bone and approach
from contralateral premolars.from contralateral premolars.
TechniqueTechnique

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TechniqueTechnique

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4- Insert needle ~1cm above occlusal plane4- Insert needle ~1cm above occlusal plane
3-5mm lateral of raphe Advance needle 20-3-5mm lateral of raphe Advance needle 20-
25mm (almost buried), must sound bone25mm (almost buried), must sound bone
then retract 1-2mm, aspirate, and inject.then retract 1-2mm, aspirate, and inject.
TechniqueTechnique

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TechniqueTechnique

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TechniqueTechnique
●
5- Deposit 3/4 carpules and inject 1/45- Deposit 3/4 carpules and inject 1/4
carpule while removing needle tocarpule while removing needle to
anesthetize lingual nerve.anesthetize lingual nerve.

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thank you for readingthank you for reading