Peeso Reamer and Gates Glidden in Endodontics: What They Are Really Used For

In endodontics, some instruments remain relevant not because they are new, but because they solve very specific problems reliably. Peeso reamers and Gates Glidden drills fall into this category.

While modern NiTi rotary systems dominate canal shaping, Peeso reamers continue to play an important supporting role—especially in post space preparation, coronal enlargement, and retreatment workflows. Clinics that understand their correct use tend to achieve more predictable results, while misuse is often what gives these instruments an undeserved reputation.

This article focuses on how Peeso reamers are actually used in daily practice, how they differ from Gates Glidden drills, and why they still matter in contemporary endodontics.

Understanding Peeso Reamers in Endodontics

Peeso reamers are stainless steel, side-cutting instruments designed primarily for controlled dentin removal in the coronal and post space areas of the root canal. Unlike shaping files, their purpose is not to follow canal curvature but to create straight, uniform space—most commonly for post placement.

In clinical reality, Peeso reamers are rarely used in isolation. They are typically introduced after canal shaping and obturation, once the clinician needs to remove gutta-percha or enlarge the coronal portion of the canal in a controlled manner.

This is where Peeso reamers show their value: they cut efficiently, maintain a consistent diameter, and allow the operator to feel resistance clearly—something many clinicians still prefer in critical steps.

Peeso Reamer Use: What Clinicians Actually Rely on Them For

Despite the variety of rotary systems available today, the use of Peeso reamers remains remarkably consistent across clinics and teaching institutions.

In practice, Peeso reamer uses usually include:

• Creating post space after root canal obturation

• Removing gutta-percha during retreatment

• Enlarging the coronal third of the canal

• Improving straight-line access for subsequent instruments

Their straight design and stiffness make them particularly suitable for controlled dentin removal in the upper canal region, where flexibility is less critical but precision is essential.

Clinicians who use Peeso reamers correctly typically limit their working depth and rely on sequential sizing to avoid unnecessary stress on the root structure.

Peeso Reamer and Gates Glidden: Similar Purpose, Different Behavior

Peeso reamers and Gates Glidden drills are often discussed together, but they behave differently in the canal. Understanding this distinction helps clinicians choose the right instrument for each step.

In many clinical protocols, Gates Glidden drills are used first to flare the coronal portion, followed by Peeso reamers to refine and standardize the post space. When used this way, the two instruments complement rather than replace each other.

Why Peeso Reamers Still Matter in Modern Endodontics

From a business and operational perspective, Peeso reamers remain attractive to clinics and hospitals for several reasons.

First, they are predictable. There is little learning curve, which makes them suitable for teaching hospitals and multi-chair clinics where consistency matters. Second, they are cost-effective, especially in environments where disposable rotary instruments increase consumable costs. Third, they provide tactile feedback, something many experienced clinicians still value when working close to critical root structures.

For distributors and procurement teams, Peeso reamers also represent a stable, recurring product category—widely accepted, clinically understood, and easy to standardize across institutions.

Clinical Considerations When Using Peeso Reamers

Most complications associated with Peeso reamers do not come from the instrument itself, but from how it is used. Excessive depth, skipping sizes, or applying too much apical pressure can increase the risk of perforation or weakening the root.

Clinics that integrate Peeso reamers into a clear, standardized protocol—usually limiting use to the coronal third and post space—tend to achieve consistent and safe outcomes.

Conclusion: A Simple Instrument with a Clear Role

Peeso reamers are not outdated tools competing with modern rotary systems. They are purpose-built instruments with a well-defined role in endodontic treatment.

When used correctly and in combination with Gates Glidden drills, Peeso reamers continue to support predictable post space preparation, efficient retreatment, and standardized workflows across dental clinics and hospitals.

In endodontics, effectiveness often comes from using the right instrument for the right task—and Peeso reamers still fit that definition perfectly.

FAQ (SEO-Friendly, Human Tone)

What are Peeso reamers used for in endodontics?
They are mainly used for post space preparation, coronal enlargement, and removal of gutta-percha during retreatment.

What is the difference between Peeso reamers and Gates Glidden drills?
Gates Glidden drills are typically used for initial coronal flaring, while Peeso reamers are used to create a more uniform and controlled post space.

Are Peeso reamers still relevant with NiTi systems?
Yes. They serve a different purpose and are often used after rotary shaping, not instead of it.

Can Peeso reamers cause perforation?
Only if misused. Limiting depth and following sequential sizing significantly reduces risk.