Storage duration effect on deformation recovery of repacked alginates

• Main Authors: Siti Sunarintyas (Author), Dyah Irnawati (Author)
• Format: Book
• Published: Universitas Airlangga, 2009-09-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

<span style="font-family: Tribune-Bold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Background: </strong><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>Manufacturers supply alginate impression materials as a powder that is packaged in bulk and in individual container. </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>Some Indonesian dental suppliers often repackage the bulk alginate into individual plastic packages which are not tied tightly and </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>stored in the display room without air conditioner. It is known that critical factors to the shelf life of alginate includer avoidance of </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>moisture contamination which may lead to premature setting of the alginate and avoidance of high temperature which may cause </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>depolymerization of the alginate. </em><span style="font-family: Tribune-Bold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Purpose: </strong><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>The aim of this study was to determine storage duration effect of repacked alginates on </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>deformation recovery. </em><span style="font-family: Tribune-Bold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Methods: </strong><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>Two brands of alginates (Tulip®TU, and Aroma Fine DF III®AF) were repacked into 120 plastic </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>containers. The samples were stored in room condition (temperature 29° C ± 1° C, relative humidity 60% ± 10%) for 1, 2, 3, 4 and </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>5 weeks. The alginates setting time and recovery from deformation were measured according to the ANSI/ADA specification number </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>18 (ISO 1563). </em><span style="font-family: Tribune-Bold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>result: </strong><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>The results revealed that there was decreased setting time during 5 weeks but there was slight decreased in </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>deformation recovery after 3 weeks storage. The ANOVA showed there was no significant difference of alginates deformation recovery </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>among the storage times (p > 0.05). </em><span style="font-family: Tribune-Bold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Conclusion: </strong><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>Storage duration of repacked alginates in plastic containers during 5 weeks in room </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>condition do not influence the alginate deformation recovery.</em></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

Item Description

1978-3728
2442-9740
10.20473/j.djmkg.v42.i3.p126-129