Journal of Iranian Dental Association
J Iran Dent Assoc
Medical Sciences
http://jida.ir
23
journal23
2383-3041
10.52547/jida
en
jalali
1398
4
1
gregorian
2019
7
1
31
3
online
1
fulltext
en
Comparison of Water Sorption of Two Injection Acrylic Resins with a Conventional Pressure-Packed Acrylic Resin
Prosthodontics
Prosthodontics
Original
Original
<div style="text-align: justify;"><strong>Background and Aim: </strong>Water sorption is one of the most important properties that affects the quality of a prosthesis, and subsequently, the quality of treatment, and pa-tient’s quality of life. The aim of this study was to determine and compare the water sorption of two types of poly methyl methacrylate (PMMA) using the injection-molding systems with a traditional acrylic resin base material.<br>
<strong>Materials and Methods: </strong>In this in vitro, experimental study, three groups of PMMA (n=10), consisting of two groups of injection molded PMMA samples (Vertex Castavar-ia and Ivo-Base High-Impact) were used for two different injection molding techniques and one group of conventional pressure-packed PMMA (Meliodent Heat Cure) was used for the conventional pressure-packed technique. After processing, 30 specimens were stored in distilled water at 37°C for 30 days. The water sorption test was then performed. Statistical analysis was carried out using SPSS version 23.0 via the Krus-kal-Wallis and Mann-Whitney tests (α=0.05).<br>
<strong>Results: </strong>The mean value of water sorption was 17.88±1.08 µg/mm3 for IvoBase spec-imens, 28.45±2.19µg/mm3 for Vertex specimens, and 21.76 ±3.26 µg/mm3 for Melio-dent specimens (P<0.001 for Ivobase-Vertex, P <0.007 for Ivobase-Meliodent, and P<0.001 for Vertex-Meliodent).<br>
<strong>Conclusion: </strong>Water sorption of IvoBase was significantly lower than that of other ma-terials. Despite such a significant difference, all of them completely fulfilled the re-quirements of EN ISO 20795-1:2008.</div>
Adsorption, Injections, Polymethyl Methacrylate
177
181
http://jida.ir/browse.php?a_code=A-10-1-942&slc_lang=en&sid=1
Ehsan
Ghasemi
2300319475328460021800
2300319475328460021800
No
Assistant Professor, Dental Material Research Center, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
Ramin
Mosharraf
2300319475328460021801
2300319475328460021801
No
Professor, Dental Materials Research Center, Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
Siavash
Mirzaei
dr.siavash.mirzaei@gmail.com
2300319475328460021802
2300319475328460021802
Yes
Dentist, Private Office, Isfahan, Iran