Inferior Alveolar Nerve Block Inferior Alveolar Nerve Block

Technique for Local AnesthesiaFor dental students

ByEhtewish ، 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● SyringeSyringe● NeedleNeedle

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Nerve blocks:Nerve blocks:

Local anesthetic deposited near main nerve Local 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 gingiva Entire 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 or 2- Replace thumb with mouth mirror or retractor retractor to preventto prevent accidental injection. accidental injection.

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● 3- Hold needle3- Hold needle parallel parallel to occlusal plane to occlusal plane with bevel away from bone and approach with 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 plane 4- 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 bone 25mm (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 1/4 5- Deposit 3/4 carpules and inject 1/4 carpule while removing needle to carpule while removing needle to anesthetize lingual nerve.anesthetize lingual nerve.

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thank you for readingthank you for reading