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Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste
OBJECTIVES: This study aimed to assess the effect of storage time and temperature on dimensional stability of impressions made with Cavex Outline zinc oxide impression paste. MATERIALS AND METHODS: A round stainless steel mold with five grooves (three horizontal and two vertical) was used in this in...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Tehran University of Medical Sciences
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5376546/ https://www.ncbi.nlm.nih.gov/pubmed/28392816 |
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author | Habibzadeh, Sareh Safaeian, Shima Behruzibakhsh, Marjan Kaviyani, Parisa Kharazifard, Mohamadjavad |
author_facet | Habibzadeh, Sareh Safaeian, Shima Behruzibakhsh, Marjan Kaviyani, Parisa Kharazifard, Mohamadjavad |
author_sort | Habibzadeh, Sareh |
collection | PubMed |
description | OBJECTIVES: This study aimed to assess the effect of storage time and temperature on dimensional stability of impressions made with Cavex Outline zinc oxide impression paste. MATERIALS AND METHODS: A round stainless steel mold with five grooves (three horizontal and two vertical) was used in this in-vitro experimental study. Cavex Outline impression paste was prepared according to the manufacturer’s instructions and applied to the mold. The mold was placed on a block and stored at 35°C and 100% humidity for setting. The impressions were poured with stone immediately and also after 30, 120, 240 and 420 minutes and 24 hours. The distance between the vertical lines on the casts was measured and compared with that in the immediately poured cast. RESULTS: Storage in a refrigerator and at room temperature for zero to seven hours had no significant effect on dimensional stability of the impressions; however, 24 hours of storage in a refrigerator or at room temperature decreased the dimensional stability of Cavex Outline (P=0.001). Also, a significant association was found between dimensional changes following 24 hours of storage in a refrigerator (4°C) and at room temperature (23°C; P<0.01). CONCLUSIONS: The optimal pouring time of Cavex Outline impressions with stone is between zero to seven hours, and 24 hours of storage significantly decreases the dimensional stability. |
format | Online Article Text |
id | pubmed-5376546 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Tehran University of Medical Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-53765462017-04-07 Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste Habibzadeh, Sareh Safaeian, Shima Behruzibakhsh, Marjan Kaviyani, Parisa Kharazifard, Mohamadjavad J Dent (Tehran) Original Article OBJECTIVES: This study aimed to assess the effect of storage time and temperature on dimensional stability of impressions made with Cavex Outline zinc oxide impression paste. MATERIALS AND METHODS: A round stainless steel mold with five grooves (three horizontal and two vertical) was used in this in-vitro experimental study. Cavex Outline impression paste was prepared according to the manufacturer’s instructions and applied to the mold. The mold was placed on a block and stored at 35°C and 100% humidity for setting. The impressions were poured with stone immediately and also after 30, 120, 240 and 420 minutes and 24 hours. The distance between the vertical lines on the casts was measured and compared with that in the immediately poured cast. RESULTS: Storage in a refrigerator and at room temperature for zero to seven hours had no significant effect on dimensional stability of the impressions; however, 24 hours of storage in a refrigerator or at room temperature decreased the dimensional stability of Cavex Outline (P=0.001). Also, a significant association was found between dimensional changes following 24 hours of storage in a refrigerator (4°C) and at room temperature (23°C; P<0.01). CONCLUSIONS: The optimal pouring time of Cavex Outline impressions with stone is between zero to seven hours, and 24 hours of storage significantly decreases the dimensional stability. Tehran University of Medical Sciences 2016-06 /pmc/articles/PMC5376546/ /pubmed/28392816 Text en Copyright© Dental Research Center, Tehran University of Medical Sciences This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly. |
spellingShingle | Original Article Habibzadeh, Sareh Safaeian, Shima Behruzibakhsh, Marjan Kaviyani, Parisa Kharazifard, Mohamadjavad Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste |
title | Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste |
title_full | Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste |
title_fullStr | Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste |
title_full_unstemmed | Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste |
title_short | Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste |
title_sort | effect of storage time and temperature on dimensional stability of impressions made with zinc oxide impression paste |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5376546/ https://www.ncbi.nlm.nih.gov/pubmed/28392816 |
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