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Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation

OBJECTIVES: It was the aim of this study to evaluate the effect of cooling water temperature on the temperature changes in the pulp chamber and at the handpiece head during high-speed tooth preparation using an electric handpiece. MATERIALS AND METHODS: Twenty-eight intact human molars received a st...

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Autor principal: Farah, Ra'fat I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Academy of Conservative Dentistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387888/
https://www.ncbi.nlm.nih.gov/pubmed/30834225
http://dx.doi.org/10.5395/rde.2019.44.e3
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author Farah, Ra'fat I.
author_facet Farah, Ra'fat I.
author_sort Farah, Ra'fat I.
collection PubMed
description OBJECTIVES: It was the aim of this study to evaluate the effect of cooling water temperature on the temperature changes in the pulp chamber and at the handpiece head during high-speed tooth preparation using an electric handpiece. MATERIALS AND METHODS: Twenty-eight intact human molars received a standardized occlusal preparation for 60 seconds using a diamond bur in an electric handpiece, and one of four treatments were applied that varied in the temperature of cooling water applied (control, with no cooling water, 10°C, 23°C, and 35°C). The temperature changes in the pulp chamber and at the handpiece head were recorded using K-type thermocouples connected to a digital thermometer. RESULTS: The average temperature changes within the pulp chamber and at the handpiece head during preparation increased substantially when no cooling water was applied (6.8°C and 11.0°C, respectively), but decreased significantly when cooling water was added. The most substantial drop in temperature occurred with 10°C water (−16.3°C and −10.2ºC), but reductions were also seen at 23°C (−8.6°C and −4.9°C). With 35°C cooling water, temperatures increased slightly, but still remained lower than the no cooling water group (1.6°C and 6.7ºC). CONCLUSIONS: The temperature changes in the pulp chamber and at the handpiece head were above harmful thresholds when tooth preparation was performed without cooling water. However, cooling water of all temperatures prevented harmful critical temperature changes even though water at 35°C raised temperatures slightly above baseline.
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spelling pubmed-63878882019-03-04 Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation Farah, Ra'fat I. Restor Dent Endod Research Article OBJECTIVES: It was the aim of this study to evaluate the effect of cooling water temperature on the temperature changes in the pulp chamber and at the handpiece head during high-speed tooth preparation using an electric handpiece. MATERIALS AND METHODS: Twenty-eight intact human molars received a standardized occlusal preparation for 60 seconds using a diamond bur in an electric handpiece, and one of four treatments were applied that varied in the temperature of cooling water applied (control, with no cooling water, 10°C, 23°C, and 35°C). The temperature changes in the pulp chamber and at the handpiece head were recorded using K-type thermocouples connected to a digital thermometer. RESULTS: The average temperature changes within the pulp chamber and at the handpiece head during preparation increased substantially when no cooling water was applied (6.8°C and 11.0°C, respectively), but decreased significantly when cooling water was added. The most substantial drop in temperature occurred with 10°C water (−16.3°C and −10.2ºC), but reductions were also seen at 23°C (−8.6°C and −4.9°C). With 35°C cooling water, temperatures increased slightly, but still remained lower than the no cooling water group (1.6°C and 6.7ºC). CONCLUSIONS: The temperature changes in the pulp chamber and at the handpiece head were above harmful thresholds when tooth preparation was performed without cooling water. However, cooling water of all temperatures prevented harmful critical temperature changes even though water at 35°C raised temperatures slightly above baseline. The Korean Academy of Conservative Dentistry 2018-12-24 /pmc/articles/PMC6387888/ /pubmed/30834225 http://dx.doi.org/10.5395/rde.2019.44.e3 Text en Copyright © 2019. The Korean Academy of Conservative Dentistry https://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Farah, Ra'fat I.
Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation
title Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation
title_full Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation
title_fullStr Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation
title_full_unstemmed Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation
title_short Effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation
title_sort effect of cooling water temperature on the temperature changes in pulp chamber and at handpiece head during high-speed tooth preparation
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387888/
https://www.ncbi.nlm.nih.gov/pubmed/30834225
http://dx.doi.org/10.5395/rde.2019.44.e3
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