A Comparative Evaluation of Impact Strength, Compressive Strength, Tensile Strength, Hardness and Dimensional accuracy of Autopolymerized, Postpolymerized Microwave Exposed Autopolymerized and Heat-Cured Denture Base Resins- An in Vitro Study
Journal Title: Saudi Journal of Oral and Dental Research - Year 2018, Vol 3, Issue 5
Abstract
Abstract: Several denture based materials have been used with a wide range of applications. Several techniques have been used in recent time to improve its properties for better durability, strength and working. To compare Impact Strength, Compressive Strength, Tensile Strength, Hardness and Dimensional accuracy of autopolymerized, postpolymerized microwave exposed autopolymerized and heat-cured denture base resins. Specimens were prepared by different modes of polymerization using autopolymerization technique,microwave post-polymerization treatment of autopolymerized acrylic resin and conventional water bath technique. The specimens were then subjected to various tests to evaluate strength (Impact, compressive, Tensile) and Hardness. There is statistically significant difference was found between mean impact strength and compressive strength of autopolymerized, postpolymerized microwave exposed autopolymerized and heat-cured denture base resin. There is no statistically significant difference between mean tensile strength of autopolymerized acrylic resin and postpolymerized microwave exposed autopolymerized acrylic resin (p=1.000) but a statistically significant difference was found between mean tensile strength of autopolymerized acrylic resin and heat-cured denture base resins (p=0.001). There was a statistically significant difference between mean Rockwell Hardness Number of autopolymerized acrylic resin and postpolymerized microwave exposed autopolymerized acrylic resin (p=0.005). A statistically significant difference was also found between mean Rockwell Hardness Number of postpolymerized microwave exposed autopolymerized acrylic resin and heat-cured denture base resins (p=0.001). Similarly, there was statistically significant difference was found between mean Rockwell Hardness Number of autopolymerized acrylic resin and heat-cured denture base resins (p=0.03). Comparison of mean linear dimensional change between autopolymerized and postpolymerized microwave exposed autopolymerized denture base resins showed no statistically significant difference in the mean dimensional change between the autopolymerized and postpolymerized microwave exposed autopolymerized denture base resins (p=0.051). Heat-cured acrylic resin exhibited the maximum values for Impact strength, Compressive Strength, Tensile Strength, Hardness and Dimensional Accuracy and Impact Strength of autopolymerized acylic resin improved after microwave postpolymerization treatment. Whereas, Hardness is decreased and Dimensional accuracy remained unaffected after the microwave postpolymerization treatment of autopolymerized acrylic resin. Keywords: Autopolymerized resins, postpolymerized resins, heat-cured denture base resins.
Authors and Affiliations
Rachna Maheshwari, Anuj Singh Parihar
Keywords
Related Articles
- EP ID EP400324
- DOI -
- Views 52
- Downloads 0
Newer Concept of Measuring Dental Caries - A Review
Abstract: Dental caries is a complex disease affecting the teeth, which is mainly caused by imbalance between demineralization and remineralization process around the tooth surface. It is a major cause of tooth loss and...
Detection of PorphyromonasGingivalisin the Deeper Tissues of Gingival Squamous Cell Carcinoma Using Polymerase Chain Reaction
Abstract: Periodontal disease has been recently linked to a variety of systemic conditions such as diabetes, cardiovascular disease, preterm delivery, and oral cancer. Oral Squamous Cell Carcinoma is a lethal disease who...
Peripheral Giant Cell Granuloma: An Unusual Case Report with Review of Literature
Abstract:Peripheral giant cell granuloma (PGCG) is a non-neoplastic, tumor-like reactive lesion occurring exclusively on gingiva/alveolar crest. It is also known as giant cell epulis, osteoclastoma, giant cell reparative...
CBCT Guided Implant Supported Overdenturewith Balanced Occlusion - A Case Report
Abstract: An implant-supported overdenture may be practically advantageous over conventional complete denture and removable partial denture. They reduce bone resorption and has greater prosthesis stability, improved main...
Incidence of post endodontic pain after single visit root canal treatment with manual, rotary and rotary instruments with ultrasonic cleaning: a comparative study
Abstract: Amongst the various complications reported for single visit endodontics, incidence of post endodontic pain (PEP) is the most common. To evaluate and compare the incidence, duration, intensity and nature of post...