journal of research in dental sciences
مجله تحقیق در علوم دندانپزشکی
J Res Dent Sci
Medical Sciences
http://jrds.ir
1
admin
2008-4676
2228-7353
8
10.66224/jrds
14
13
fa
jalali
1404
4
1
gregorian
2025
7
1
22
2
online
1
fulltext
fa
بررسی مقایسهای تأثیر دمای محیط نگهداری بر تغییرات ابعادی قالب سیلیکون افزایشی Harmony medium در
شرایط آزمایشگاهی
Comparing the Effect of Storage Temperature on Dimensional Changes of additional silicone Impression Materials: Harmony medium (an in vitro study)
پروتز
Prothesis
مطالعه اصیل
original article
<span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">سابقه وهدف:</span></span></span></b> <span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">یکی از عوامل مهم در انتخاب مواد قالبگیری از جمله سیلیکون افزایشی میزان تغییرات ابعادی میباشد. تغییرات ابعادی نامناسب میتواند باعث شکست درمانهای پروتزی شود. در این تحقیق به بررسی تأثیر دماهای مختلف بر ثبات ابعادی ماده قالبگیری پلی وینیل سایلوکسان </span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="color:black">Harmony medium</span></span><span style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> پرداخته شد.</span></span></span></span></span></span></span><br>
<span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">مواد و روش ها</span></span></span></b><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">: </span></span></span><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">در این مطالعه تجربی آزمایشگاهی، تعداد 99 قالب از سیلیکون افزایشی </span></span></span><span dir="LTR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">Harmony medium (</span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="color:black">Elsodent</span></span><span dir="LTR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">-France</span></span></span><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">) از یک مدل فلزی از جنس استنلس استیل شامل دو پایه فلزی تراش خورده، بدست آمد. مراحل قالبگیری سیلیکون افزایشی طبق دستورات کارخانه سازنده انجام گرفت. قالبها به مدت 20 ثانیه با آب شسته و در محیط با دماهای 1</span></span></span><span lang="FA" style="font-size:11.0pt"><span style="color:black">±</span></span><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">4 ، 1</span></span></span><span lang="FA" style="font-size:11.0pt"><span style="color:black">±</span></span><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">25 و 1</span></span></span><span lang="FA" style="font-size:11.0pt"><span style="color:black">±</span></span><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">40 درجه سانتیگراد نگهداری شدند و با فواصل زمانی: یک ساعت، یک روز و یک هفته بعد از قالبگیری، گچریزی صورت گرفت. بعد از خشک شدن کامل کستها، قطر، عرض و ارتفاع موجود بر روی کستهای گچی توسط کولیس دیجیتال </span></span></span><span dir="LTR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">S.D.M</span></span></span><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> با دقت صدم میلیمتر اندازهگیری گردید. تغییرات ابعادی توسط آزمون </span></span></span><span dir="LTR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black">Two Way ANOVA</span></span></span><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> و </span></span></span><span lang="FA" style="font-size:11.0pt"><span style="color:black">و</span></span><span dir="LTR" style="font-size:11.0pt"><span style="color:black">POST</span></span> <span dir="LTR" style="font-size:11.0pt"><span style="color:black">HOC</span></span><span dir="LTR" style="font-size:11.0pt"><span calibri="" style="font-family:"><span style="color:black"> test</span></span></span><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> مورد قضاوت آماری قرار گرفت.</span></span></span></span></span></span></span><br>
<span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">یافته ها:</span></span></span></b><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> تغییرات در بعد قطر؛ در دمای 25 درجه سانتی گراد در تمام زمانها نسبت بهم و در دمای 40 درجه سانتی گراد زمان 1هفته نسبت به 1ساعت و 1روز دارای تفاوت معناداری بودند. تغییرات در بعد عرض؛ در دمای 4</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> زمان 1ساعت نسبت به 1روز، در دمای 25</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> زمان 1هفته نسبت به 1ساعت و 1روز و در دمای 40</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> زمان 1ساعت نسبت به 1هفته دارای تفاوت معناداری بودند. تغییرات در بعد ارتفاع؛ در دماهای 25</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> و 40</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> زمان 1هفته نسبت به 1ساعت و 1روز دارای تفاوت معناداری بودند (</span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="color:black">p =0.05</span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">). تغییرات در دمای 25</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> در 1 ساعت، 4</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> در 1 روز و 4</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> در 1 هفته در بازهی استاندارد کلینیکی (1.5%)، قرار داشتند.</span></span></span></span></span></span></span><br>
<span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">نتیجهگیری:</span></span></span></b> <span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black">به نظر میرسد ثبات ابعادی سیلیکون افزایشی مورد مطالعه تحت تأثیر دمای محیط نگهداری و زمان قالبریزی میباشد و بهترین زمان و دما، 1 ساعت و 25</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span cambria="" math="" style="font-family:"><span style="color:black">℃</span></span></span><span lang="AR-SA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"> است.</span></span></span></span></span></span></span><br>
<span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><span lang="FA" style="font-size:11.0pt"><span b="" nazanin="" style="font-family:"><span style="color:black"></span></span></span></span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Background and aim:</span></b><span style="font-size:12.0pt"> Improper dimensional changes in impression materials, including of additional silicone impression materials can cause the failure of prosthetic treatments. The aim of this study was to investigate the effect of different temperatures on the dimensional stability of polyvinyl siloxane impression material.</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Materials and methods:</span></b><span style="font-size:12.0pt"> In this in vitro study, 99 Harmony medium (Elsodent-France) additional silicone impression were prepared according to the manufacturer's instructions. The impressions were kept in the environment with temperatures of 4, 25 and 40 C°. Then with time intervals: one hour, one day and one week after molding, plastering was done. The diameter, width and height of plaster casts were measured by S.D.M digital caliper. Dimensional changes were analyzed by Two Way ANOVA and POST HOC test</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Results:</span></b><span style="font-size:12.0pt"> Changes in the diameter dimension; at the temperature of 25 °C at all times compared to each other and at 40 °C during 1 week compared to 1 hour and 1 day, there were significant differences. Changes in the width dimension; at 4°C, 1 hour compared to 1 day, at 25°C, 1 week compared to 1 hour and 1 day, and at 40°C, 1 hour compared to 1 week had a significant difference. Changes in the height dimension; at 25 °C and 40 °C, there were significant differences between 1 week compared to 1 hour and 1 day (p < 0.05). Changes at 25 °C in 1 hour, 4 °C in 1 day and 4 °C in 1 week were within the clinical standard range (1.5%).</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Conclusion:</span></b><span style="font-size:12.0pt"> In the scope of the present study, it seems that the dimensional stability of the investigated additional silicone is influenced by the temperature of the storage environment and the impression time, and the best time and temperature is 1 hour and 25 °C. </span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Keywords:</span></b><span style="font-size:12.0pt"> Additional Silicone, Temperature, Time, Dimensional Stability</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Background and aim:</span></b><span style="font-size:12.0pt"> Improper dimensional changes in impression materials, including of additional silicone impression materials can cause the failure of prosthetic treatments. The aim of this study was to investigate the effect of different temperatures on the dimensional stability of polyvinyl siloxane impression material.</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Materials and methods:</span></b><span style="font-size:12.0pt"> In this in vitro study, 99 Harmony medium (Elsodent-France) additional silicone impression were prepared according to the manufacturer's instructions. The impressions were kept in the environment with temperatures of 4, 25 and 40 C°. Then with time intervals: one hour, one day and one week after molding, plastering was done. The diameter, width and height of plaster casts were measured by S.D.M digital caliper. Dimensional changes were analyzed by Two Way ANOVA and POST HOC test</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Results:</span></b><span style="font-size:12.0pt"> Changes in the diameter dimension; at the temperature of 25 °C at all times compared to each other and at 40 °C during 1 week compared to 1 hour and 1 day, there were significant differences. Changes in the width dimension; at 4°C, 1 hour compared to 1 day, at 25°C, 1 week compared to 1 hour and 1 day, and at 40°C, 1 hour compared to 1 week had a significant difference. Changes in the height dimension; at 25 °C and 40 °C, there were significant differences between 1 week compared to 1 hour and 1 day (p < 0.05). Changes at 25 °C in 1 hour, 4 °C in 1 day and 4 °C in 1 week were within the clinical standard range (1.5%).</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Conclusion:</span></b><span style="font-size:12.0pt"> In the scope of the present study, it seems that the dimensional stability of the investigated additional silicone is influenced by the temperature of the storage environment and the impression time, and the best time and temperature is 1 hour and 25 °C. </span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Keywords:</span></b><span style="font-size:12.0pt"> Additional Silicone, Temperature, Time, Dimensional Stability</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Background and aim:</span></b><span style="font-size:12.0pt"> Improper dimensional changes in impression materials, including of additional silicone impression materials can cause the failure of prosthetic treatments. The aim of this study was to investigate the effect of different temperatures on the dimensional stability of polyvinyl siloxane impression material.</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Materials and methods:</span></b><span style="font-size:12.0pt"> In this in vitro study, 99 Harmony medium (Elsodent-France) additional silicone impression were prepared according to the manufacturer's instructions. The impressions were kept in the environment with temperatures of 4, 25 and 40 C°. Then with time intervals: one hour, one day and one week after molding, plastering was done. The diameter, width and height of plaster casts were measured by S.D.M digital caliper. Dimensional changes were analyzed by Two Way ANOVA and POST HOC test</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Results:</span></b><span style="font-size:12.0pt"> Changes in the diameter dimension; at the temperature of 25 °C at all times compared to each other and at 40 °C during 1 week compared to 1 hour and 1 day, there were significant differences. Changes in the width dimension; at 4°C, 1 hour compared to 1 day, at 25°C, 1 week compared to 1 hour and 1 day, and at 40°C, 1 hour compared to 1 week had a significant difference. Changes in the height dimension; at 25 °C and 40 °C, there were significant differences between 1 week compared to 1 hour and 1 day (p < 0.05). Changes at 25 °C in 1 hour, 4 °C in 1 day and 4 °C in 1 week were within the clinical standard range (1.5%).</span></span></span></span><br>
<span style="font-size:11pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:12.0pt">Conclusion:</span></b><span style="font-size:12.0pt"> In the scope of the present study, it seems that the dimensional stability of the investigated additional silicone is influenced by the temperature of the storage environment and the impression time, and the best time and temperature is 1 hour and 25 °C. </span></span></span></span><br>
<br>
سیلیکون افزایشی, دما, زمان, ثبات ابعادی
Additional Silicone, Temperature, Time, Dimensional Stability
107
115
http://jrds.ir/browse.php?a_code=A-10-1804-1&slc_lang=fa&sid=1
shirin
memaran
شیرین
معماران
shirinmemaran@yahoo.com
100319475328460021562
0009-0003-5074-7524
No
گروه پروتزهای دندانی، واحد علوم پزشکی تهران، دانشگاه آزاد اسلامی، تهران، ایران
سریرا
مهربان
100319475328460021563
100319475328460021563
No
گروه پروتزهای دندانی، واحد علوم پزشکی تهران، دانشگاه آزاد اسلامی، تهران، ایران
ghazal
ghorbani
غزل
قربانی
100319475328460021564
100319475328460021564
Yes
دندانپزشک عمومی
narges
ghasemi
نرگس
قاسمی
100319475328460021565
0009-0008-8680-2309
No
دندانپزشک عمومی