Tips And Tricks In Endodontics. Dr. Eman Helmy

Описание: 🔹Definition of Gauging after preparation:

The process of measuring the apical diameter of the prepared canal to determine whether the canal is adequately enlarged and well-shaped. It’s done by gently inserting K-file (e.g., #25, #30…) to working length after preparation to feel the file is snugly fitted.

🔹 Purpose of gauging:

To confirm your final apical size (master apical file).

To verify that you have not over-enlarged or under-prepared the canal.

To check for a uniform taper and smooth path for obturation.

🔹False Gauging (False Resistance):

Sometimes gauging can be misleading, giving a false feeling of resistance due to:

Debris compacted in the apical area.

Remaining pulp tissue.

Irregular or narrow apical constriction.

Canal curvature causing lateral contact with the file.

👉 That’s why determining the initial apical file (IAF) early is essential, it gives a reliable reference for your true canal diameter.

🔹Importance of Knowing the Initial File (IAF):

It tells you the real apical size before shaping.

Guides how far to enlarge safely.

Prevents under or over-instrumentation & false gauging later.

In Summary *

Always determine your IAF.

Gauging confirms your apical size after shaping.

Be aware of false gauging.