Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste
Identifieur interne : 006F22 ( Ncbi/Checkpoint ); précédent : 006F21; suivant : 006F23Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste
Auteurs : Sareh Habibzadeh [Iran] ; Shima Safaeian [Iran] ; Marjan Behruzibakhsh [Iran] ; Parisa Kaviyani [Iran] ; Mohamadjavad Kharazifard [Iran]Source :
- Journal of Dentistry (Tehran, Iran) [ 1735-2150 ] ; 2016.
Abstract
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.
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.
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).
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.
Url:
PubMed: 28392816
PubMed Central: 5376546
Affiliations:
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Effect of Storage Time and Temperature on Dimensional Stability of Impressions Made with Zinc Oxide Impression Paste</title><author><name sortKey="Habibzadeh, Sareh" sort="Habibzadeh, Sareh" uniqKey="Habibzadeh S" first="Sareh" last="Habibzadeh">Sareh Habibzadeh</name><affiliation wicri:level="1"><nlm:aff id="AFF1"> Assistant Professor, Department of Prosthodontics, School of Dentistry, International Campus, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea> Assistant Professor, Department of Prosthodontics, School of Dentistry, International Campus, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Safaeian, Shima" sort="Safaeian, Shima" uniqKey="Safaeian S" first="Shima" last="Safaeian">Shima Safaeian</name><affiliation wicri:level="1"><nlm:aff id="AFF1"> 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Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Safaeian, Shima" sort="Safaeian, Shima" uniqKey="Safaeian S" first="Shima" last="Safaeian">Shima Safaeian</name><affiliation wicri:level="1"><nlm:aff id="AFF1"> Assistant Professor, Department of Prosthodontics, School of Dentistry, International Campus, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea> Assistant Professor, Department of Prosthodontics, School of Dentistry, International Campus, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Behruzibakhsh, Marjan" sort="Behruzibakhsh, Marjan" uniqKey="Behruzibakhsh M" first="Marjan" last="Behruzibakhsh">Marjan Behruzibakhsh</name><affiliation wicri:level="1"><nlm:aff id="AFF2"> Assistant Professor, Department of Dental Materials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea> Assistant Professor, Department of Dental Materials, School of Dentistry, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Kaviyani, Parisa" sort="Kaviyani, Parisa" uniqKey="Kaviyani P" first="Parisa" last="Kaviyani">Parisa Kaviyani</name><affiliation wicri:level="1"><nlm:aff id="AFF3"> Under Graduate Student, International Campus, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea> Under Graduate Student, International Campus, School of Dentistry, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Kharazifard, Mohamadjavad" sort="Kharazifard, Mohamadjavad" uniqKey="Kharazifard M" first="Mohamadjavad" last="Kharazifard">Mohamadjavad Kharazifard</name><affiliation wicri:level="1"><nlm:aff id="AFF4"> Statistical Advisor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea> Statistical Advisor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author></analytic><series><title level="j">Journal of Dentistry (Tehran, Iran)</title><idno type="ISSN">1735-2150</idno><idno type="eISSN">2008-2185</idno><imprint><date when="2016">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Objectives:</title><p>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.</p></sec><sec><title>Materials and Methods:</title><p>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.</p></sec><sec><title>Results:</title><p>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).</p></sec><sec><title>Conclusions:</title><p>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.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Shayegh, S" uniqKey="Shayegh S">S Shayegh</name></author><author><name sortKey="Salari, A" uniqKey="Salari A">A. Salari</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ender, A" uniqKey="Ender A">A Ender</name></author><author><name sortKey="Mehl, A" uniqKey="Mehl A">A. 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Borracchini</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>Iran</li></country></list><tree><country name="Iran"><noRegion><name sortKey="Habibzadeh, Sareh" sort="Habibzadeh, Sareh" uniqKey="Habibzadeh S" first="Sareh" last="Habibzadeh">Sareh Habibzadeh</name></noRegion><name sortKey="Behruzibakhsh, Marjan" sort="Behruzibakhsh, Marjan" uniqKey="Behruzibakhsh M" first="Marjan" last="Behruzibakhsh">Marjan Behruzibakhsh</name><name sortKey="Kaviyani, Parisa" sort="Kaviyani, Parisa" uniqKey="Kaviyani P" first="Parisa" last="Kaviyani">Parisa Kaviyani</name><name sortKey="Kharazifard, Mohamadjavad" sort="Kharazifard, Mohamadjavad" uniqKey="Kharazifard M" first="Mohamadjavad" last="Kharazifard">Mohamadjavad Kharazifard</name><name sortKey="Safaeian, Shima" sort="Safaeian, Shima" uniqKey="Safaeian S" first="Shima" last="Safaeian">Shima Safaeian</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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