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Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...

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Related Experiment Video

Updated: Jul 10, 2026

Evaluation of the Curing of Adhesive Systems by Rheological and Thermal Testing

Evaluation of the Curing of Adhesive Systems by Rheological and Thermal Testing

Published on: July 3, 2020

Temperature rise produced by different light-curing units through dentin.

A Rüya Yazici¹, Ali Müftü, Gerard Kugel

¹Department of Conservative Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. ruyay@hacettepe.edu.tr

The Journal of Contemporary Dental Practice

|November 13, 2007

Summary

This summary is machine-generated.

Different light curing units cause varying temperature rises in dentin. Light-emitting diode (LED) curing lights generate the lowest temperature increase, especially with thicker dentin barriers.

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Area of Science:

Dental Materials Science
Biomaterials Engineering
Restorative Dentistry

Background:

Light curing units (LCUs) are essential for polymerizing dental composites.
Excessive heat generated by LCUs can cause pulpal damage.
Understanding heat transmission through dentin is crucial for patient safety.

Purpose of the Study:

To compare the temperature rise produced by different LCUs.
To evaluate the effect of dentin thickness on temperature transmission.
To identify LCUs with minimal thermal effects.

Main Methods:

Dentin discs of 1.0 and 2.0 mm thickness were prepared from human molars.
Temperature was measured using a K-type thermocouple under various conditions.
Tested LCUs included quartz-tungsten-halogen (Spectrum, Elipar Trilight-ET) and LED units.

Main Results:

The ET standard mode produced the highest temperature rise.
LED curing lights resulted in the lowest temperature increase.
Thicker dentin (2.0 mm) significantly reduced temperature transmission compared to 1.0 mm.

Conclusions:

Dentin thickness and LCU type influence heat transmission.
LED curing lights are preferable for minimizing temperature rise.
Clinical protocols should consider LCU type and dentin thickness to prevent pulpal thermal injury.