Inferior Alveolar Injection

Summary

This video demonstrates a technique for accurately locating the injection site for an IA (Inferior Alveolar) injection. The method involves dividing the mouth's opening in half between two specific teeth, finding the fold in the area, and inserting the needle about 3mm above the midpoint of that fold. The procedure ensures the needle is placed at the base of the triangle, over the premolar, and guides the user on how to aspirate and deposit the solution effectively.

Takeaways

• 😀 Divide the mouth opening in half between two specific teeth to determine the area for injection.
• 😀 The midpoint between the two teeth should be the focus for the injection location, not just the middle of the mouth.
• 😀 Ensure you're inserting along the fold of the mouth, where it forms a noticeable 'S' shape.
• 😀 Insert the needle about 3mm higher than the midpoint to target the correct injection area.
• 😀 By inserting along the fold and positioning the needle higher, you target the base of a triangle in the oral anatomy.
• 😀 Always check that you're above the premolar area when inserting the needle.
• 😀 The fold of the mouth will guide you in determining the right spot for insertion.
• 😀 Ensure the needle is not inserted too deeply — stop before reaching the hub of the needle.
• 😀 Perform an aspiration test after insertion to confirm proper placement.
• 😀 Once the aspiration confirms correct placement, proceed to deposit the solution.

Q & A

What is the first step in determining the correct location for the injection?

The first step is to divide the mouth's opening in half, taking the distance between two specific teeth and finding the midpoint.

How do you identify the correct midpoint for the injection site?

You identify the midpoint by taking the two edges of the teeth and dividing the area in half, ensuring the midpoint is not too far toward either edge.

Why is the fold along the mouth important for the injection?

The fold along the mouth, which often forms an 'S' shape, serves as a guide for inserting the needle at the correct position.

How much higher should the needle be inserted relative to the midpoint?

The needle should be inserted about 3 mm higher than the midpoint of the divided area.

Where exactly is the injection site relative to the fold?

The needle should be inserted along the fold, a couple of millimeters higher than the midpoint to ensure accuracy.

How do you ensure the needle is in the right place after insertion?

You can confirm the position by noting that you will be over the premolar and touching the lower commissure (the corner of the mouth).

How deep should the needle be inserted?

The needle should not be inserted all the way in to the hub. It should be stopped before reaching that depth.

What is the purpose of aspirating after inserting the needle?

Aspirating helps to confirm that the needle is not in a blood vessel by pulling back on the plunger and checking for blood.

What should be done after aspirating the needle?

After aspirating, the solution is slowly deposited at the correct injection site.

Why is it important to insert the needle a couple of millimeters above the midpoint?

Inserting the needle a few millimeters higher ensures that it targets the correct anatomical area, specifically the base of the triangle, which is crucial for effective injection.