LOCAL ANESTHETICS

Question 1

1. State the layers that a needle passes through during an ID block (Formative, 2005)

Answer 1

• Oral mucosa (superficial layer, intermediate layer, basal layer) –> submucosa –> sphenomandibular
• ligament –> mandibular foramen
• Pterygomandibular raphe
• Boundaries: superior constrictor muscles and buccinatoe form the junction, which is pterygomandibular raphe (anteriorly) / parotid gland (posteriorly) / lateral pterygoid m. (superiorly) / medial surface of ramus (laterally) /medial pterygoid m. (medially and inferiorly)