4. Mandibular Anesthesia
Most commonly performed technique
Has highest failure rate (15-20%)
Success depends on depositing solution
within 1 mm of nerve trunk
5. Inferior Alveolar Nerve Block
Not a complete mandibular nerve block.
Requires supplemental buccal nerve block
May require infiltration of incisors or mesial
root of first molar
7. Inferior Alveolar Nerve Block
Areas Anesthetized
Mandibular teeth to midline
Body of mandible, inferior ramus
Buccal mucosa anterior to mental foramen
Anterior 2/3 tongue & floor of mouth
Lingual soft tissue and periosteum
13. Inferior Alveolar Nerve Block
Technique
Apply topical
Area of insertion:
medial ramus, mid-coronoid notch,
level with occlusal plane (1 cm above),
3/4 posterior from coronoid notch to
pterygomandibular raphe
advance to bone (20-25 mm)
14. Inferior Alveolar Nerve Block
Target Area
Inferior alveolar nerve, near mandibular
foramen
Landmarks
Coronoid notch
Pterygomandibular raphe
Occlusal plane of mandibular posteriors
15. Inferior Alveolar Nerve Block
Precautions
Do not inject if bone not contacted
Avoid forceful bone contact
16. Inferior Alveolar Nerve Block
Failure of Anesthesia
Injection too low
Injection too anterior
Accessory innervation
-Mylohyoid nerve
-contralateral Incisive nerve innervation