Effect of Post-Polymerization Heat Treatment on a Denture Base Acrylic Resin: Histopathological Analysis in Rats

Journal Title: International Journal of Dentistry and Oral Science (IJDOS) - Year 2015, Vol 0, Issue 1

Abstract

Aims: This work examined the histological effects, on the rat palatal mucosa, of a denture base acrylic resin, submitted or not to a post-polymerization heat-treatment. Methods: Fifteen adult female Wistar rats, with sixty days old, weighting 150 g – 250 g were divided in G1: animals being maintained under the same conditions as the experimental groups following described, but without the use acrylic palatal plates (control group); G2: use of heat-polymerized acrylic resin palatal plates made of Lucitone 550; G3: use of palatal plates identical to G2, but subjected to a post-polymerization treatment in a water bath at 550 C for 60 min. The plates covered all the palate and were fixed in the molar region with light-cured resin, thus being kept there for 14 days. After the sacrifice, the palate was removed, fixed in formaldehyde 10% and decalcified with EDTA. Sections were stained using haematoxylin and eosin. Images in duplicate were made from the central region of the cuts, to measure the thickness (μm) of the keratin layers (TKC), epithelium total (TET) and connective tissue (TCC). Statistical analyses were carried out by one-way ANOVA and Tukey post-tests (α=0.05). Results: According to the results there was significant difference in the thickness of keratin between G2 and G3, with G1 having the intermediate value and similar to the other groups. There was a significant difference in the connective tissue with G3 <G1 <G2 (p <0.0001). Conclusion: Regarding the total epithelium, group G3 presented a statistically significant difference with both G1 and with G2 (p <0.0001), which were similar to each other. When using the proposed heat treatment it was found to be effective, from the viewpoint of biocompatibility, for the acrylic resin denture base investigated.

Authors and Affiliations

Janaina Habib Jorge

Keywords

Related Articles

The Efficacy of Hyaluronic Acid Gel in Pain Control of Recurrent Aphthous Stomatitis

This study was conducted to evaluate the efficacy of topical hyaluronic acid gel (HA) and compared with triamcinolone acetonide pomad (TA) in the treatment and pain control of RAS. A total of 57 patients with a history o...

Prevalence of Dental Malocclusion Among Children with Physical, Sensory and Neuropsychological Disabilities in Dar es Salaam, Tanzania

Introduction: Proper occlusion is an important component of overall oral health of a child since malocclusion is associated with oral diseases like dental caries, periodontal diseases and temporal-mandibular disorders. I...

The Effect of Fluoride on Beta-Titanium Orthodontic Wires` Surface Texture and Friction Resistance

Objectives: The aim of this study is to investigate the effect of fluoride application on the surface properties and frictional resistance of two types of orthodontic archwires. Materials and Methods: A total of sixty s...

Comparison of Retention Forces of Different Fabrication Methods of Co-Cr Crowns: Pre-sintered and Milled, Cast and Electroforming Secondary Crowns with Different Taper Angles

To investigate the retention forces of differently fabricated secondary crowns made of Co-Cr alloy and electroforming secondary crowns considering different taper angles. Cobalt-chromium primary crowns with 0°, 1° and 2°...

Palatal Rugae Patterns Among a Sudanese Population Sample

Palatal rugae patterns can have a significant role in forensic identification when it is difficult to use the normal identification methods. This study aimed to identify the morphological patterns of palatal rugae in a s...

Download PDF file
  • EP ID EP201137
  • DOI 10.19070/2377-8075-SI02001
  • Views 178
  • Downloads 0

How To Cite

Janaina Habib Jorge (2015). Effect of Post-Polymerization Heat Treatment on a Denture Base Acrylic Resin: Histopathological Analysis in Rats. International Journal of Dentistry and Oral Science (IJDOS), 0(1), 1-7. https://europub.co.uk/articles/-A-201137