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A comparison of six impression syringes

M Kishimoto, H T Shillingburg, M G Duncanson

The Journal of Prosthetic Dentistry

|May 1, 1980

Summary

Dental impression syringes vary greatly in required force. Air-activated syringes offer the easiest operation and best control for dental professionals, minimizing errors.

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Area of Science:

Dental Materials Science
Biomedical Engineering

Background:

Accurate dental impressions are crucial for prosthodontic success.
Syringe design significantly impacts the force required for material delivery.
Operator control is vital for minimizing errors in impression techniques.

Purpose of the Study:

To compare the operational force and control of different dental impression syringes.
To evaluate bubble entrapment and tracing errors associated with various syringe types.

Main Methods:

Evaluation of manually operated, reusable metal, and air-activated syringes.
Measurement of required force for polyether and polysulfide impression materials.
Assessment of bubble entrapment and tracing errors during impression making.

Main Results:

Some disposable syringes required over 100 pounds of force, while metal syringes required 13-21 pounds.
The air-activated syringe required no significant operational force.
No syringe type showed significant bubble entrapment differences, but dentist experience did.
The air-activated syringe demonstrated superior control with fewer tracing errors.

Conclusions:

Air-activated syringes offer significant advantages in ease of use and control for dental impression procedures.
Syringe selection can impact operator fatigue and impression accuracy.
Dentist proficiency plays a role in impression quality, independent of syringe type.

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