research centers


Search results: Found 2

Listing 1 - 2 of 2
Sort by

Article
An Evaluation of Olive Oil as a Separating Medium and Its Effect on Some Mechanical Properties of Processed Acrylic Resin Denture Base (A Comparative Study). Part Two

Authors: Akhlas Zaid Al-Ta’ie --- Widad Abdul-Hadi Al-Nakkash وداد عبد الهادي النقاش --- Farhan Dakhil Salman
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2015 Volume: 27 Issue: 4 Pages: 52-61
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Background: During acrylic resin processing, the mold must be separated from the surface of the gypsum to preventliquid resin from penetrating into the gypsum, and water from the gypsum seeping into the acrylic resin. For manyyears, tin foil was the most acceptable separating medium, and because it's difficult to apply, a tin-foil substitute isused. In this study, olive oil is used as an alternative to tin foil separating medium for first time, and evaluating its effectas a separating medium on some mechanical properties such as (indentation hardness and transverse strength) ofacrylic resins denture base comparing it with those processed using tin-foil and tin foil substitute such as (cold moldseal) separating medium.Materials and Methods: One hundred Twenty four acrylic resins samples (124) were prepared falling in two maingroups: (heat and cold-cured acrylic denture base resins), for each group three types of separating medium wereused and five tests (10 samples) for each test were carried out, and (4) samples for the chemical composition.Results: Tin foil is one of the most satisfactory separating media in getting the best properties when using it as aseparating medium, while, a statistically no-significant difference have been noticed between olive oil and coldmoldseal samples concerning mechanical properties of tested groups. Infrared spectroscopy analysis showed that,no changes were found in the chemical composition of both heat and cold-cured acrylic resins denture base afterusing olive oil as a separating medium.Conclusion:The present study concluded that olive oil may be used as a substitute for tin foil and cold – mold sealseparating medium in processing both heat and cold – cure acrylic resin denture base.


Article
Evaluation of olive oil as a separating medium and its effect on some physical properties of processed acrylic resin denture base (A comparative study). Part one

Loading...
Loading...
Abstract

Back ground: During acrylic resin processing, the mold must be separated from the surface of the gypsum to preventliquid resin from penetrating into the gypsum, and water from the gypsum seeping into the acrylic resin. For manyyears, tin foil was the most acceptable separating medium, and because it's difficult to apply, a tin-foil substitute isused. In this study, olive oil is used as an alternative to tin foil separating medium for first time, so the aim of the studywas to evaluate its effect as a separating medium on some physical properties such as (surface roughness, watersorption and solubility) of acrylic resins denture base comparing it with those processed using tin-foil and tin foilsubstitute such as (cold mold seal) separating medium.Materials and methods: One hundred forty two acrylic resins samples (124) were prepared falling in two main groups:[heat and cold-cured acrylic denture base resins ], for each group three types of separating medium were used andfive tests (10 samples) for each test were carried out , and (4) samples for the chemical composition.Result: From the result obtained, tin foil is one of the most satisfactory separating media in getting the best propertieswhen using it as a separating medium, while, a statistically no-significant difference have been noticed betweenolive oil and cold-mold seal samples concerning physical and mechanical properties of tested groups. Infraredspectroscopy analysis showed that, no changes were found in the chemical composition of both heat and coldcuredacrylic resins denture base after using olive oil as a separating medium.Conclusion: Lastly, from the results of this study it may be concluded, that olive oil may be used as a substitute for tinfoil and cold – mold seal separating medium in processing both heat and cold – cure acrylic resin denture base

Listing 1 - 2 of 2
Sort by
Narrow your search

Resource type

article (2)


Language

English (2)


Year
From To Submit

2015 (2)