scholarly journals Studying the properties of heat cure acrylic resin after reinforced with polyamide fibers treated with plasma (oxygen gas)

2015 ◽  
Vol 37 (3) ◽  
pp. 83
Author(s):  
Raghdaa. K. Jassim
Keyword(s):  
Acrylic Resin ◽  
Heat Cure ◽  
Polyamide Fibers ◽  
Oxygen Gas ◽  
Plasma Oxygen

Evaluation of Four Different Denture Cleansers on Tea Stain Removal from Heat Cure Clear Acrylic Resin Specimens—An In Vivo Study

2017 ◽  
Vol 09 (02) ◽  
Author(s):  
K C Uma ◽  
K M Mathew ◽  
P Saji ◽  
P Sesha Reddy ◽  
Ashish R Jain ◽  
...  
Keyword(s):  
Acrylic Resin ◽  
In Vivo Study ◽  
Heat Cure ◽  
Stain Removal ◽  
Denture Cleansers

Evaluation of Tissue Reaction to Some Denture-base Materials: An Animal Study

2008 ◽  
Vol 9 (4) ◽  
pp. 67-74 ◽  
Author(s):  
Behnaz Ebadian ◽  
Mohammad Razavi ◽  
Solmaz Soleimanpour ◽  
Ramin Mosharraf
Keyword(s):  
Animal Study ◽  
Weight Ratio ◽  
Acrylic Resin ◽  
Tissue Reaction ◽  
Control Group ◽  
Denture Base ◽  
Base Materials ◽  
Heat Cure ◽  
Two Samples ◽  
Significant Difference

Abstract Aim Controversy continues regarding the biocompatibility of denture base materials. One method to evaluate the biocompatibility of materials is in an animal study. Using dogs as subjects, the purpose of this study was to evaluate the vestibular tissue reaction to cobalt chromium (Co-Cr), heat cure acrylic resin, and acrylic resin mixed with aluminum oxide (Al2O3) compared with a control group using the histopathologic method. Methods and Materials Twelve disk shape samples (2 mm × 8 mm) in four groups of Co-Cr, acrylic resin, acrylic resin mixed with a 20% weight ratio of Al2O3, and a control group (Teflon) were fabricated. In one stage surgery two samples of each material (8 samples) was implanted in the buccal vestibule of each dog (n=6), subcutaneously. At 45 and 90-day intervals, half of the samples were excised along with peripheral tissue to assess the presence of inflammation by grading on a scale from 0 to 3 and the presence of a fibrotic capsule using histological observations. Data were analyzed using the Kruskal-Wallis, Mann-Whitney, and Tau b Kendal tests. Results Tissue reaction between Co-Cr and the control group was significant (P=0.02), but it was not significant between other groups. There was no significant difference between the 45 and 90-day postinsertion samples. The formation of fibrotic capsule groups was significant (P=0.01). It was significant between the Co-Cr and acrylic resin groups (P=0.01) and the acrylic resin and control groups (P=0.01). Conclusion The Co-Cr group was more toxic than the other groups. The inflammation increased during time. The inflammation in two acrylic groups was greater than the control and less than the Co-Cr group. The formation of fibrotic capsule, except in the acrylic resin with Al2O3 group, increased over time. Clinical Significance Co-Cr alloys are toxic and can produce damage to living tissue. Heat cure acrylic resin materials have less toxicity, and their use is safer than Co-Cr alloys. Citation Ebadian B, Razavi M, Soleimanpour S, Mosharraf R. Evaluation of Tissue Reaction to Some Denture-base Materials: An Animal Study. J Contemp Dent Pract 2008 May; (9)4:067-074.

scholarly journals The Comparison of Retention between Hot Curing and Fluid Denture Base Acrylic Resin (In Vivo)

2018 ◽  
Vol 2 (2) ◽  
pp. 150-161
Author(s):  
Bestun Akram ◽  
Rizgar Hasan
Keyword(s):  
Base Material ◽  
Acrylic Resin ◽  
Basic Requirement ◽  
Denture Base ◽  
Measuring Device ◽  
Base Materials ◽  
Heat Cure ◽  
Male Patients

Adequate retention is a basic requirement for the acceptance of complete denture. The aim of this study was to evaluate the retention quality of fluid denture base materials and compare it with conventional acrylic denture base materials Method: Sixteen edentulous male patients with an age 45-60 years participated in the study. For each patient two denture bases were constructed, one of them made from fluid denture base materials and the other made from hot acrylic denture base materials. A specially designed strain gauge measuring device was used to measure the force required to dislodge the two dentures from basal seats. Six measurements of retention of newly inserted denture base were recorded for each patient (three for maxillary acrylic denture base and three for maxillary fluid denture base). Results: The results of the retention test showed that the fluid denture base materials required more force in order to dislodge denture than the heat cure denture base materials, which means a significant improvement in retention quality obtained by fluid denture base materials. Conclusions: It has appeared that the fluid acrylic denture base materials produce denture base material with excellent retentive efficiency to the underlying tissue when compared to conventional denture base materials.

scholarly journals Konsentrasiekstrakdaunsirsak(Annonamuricata)yangmenghambatpertumbuhan Candida albicans pada lempeng resin akrilik polimerisasi panas Concentration of soursop (Annona muricata)leaf extract in inhibiting Candida albicans on heat cure acrylic resin plate

2013 ◽  
Vol 12 (3) ◽  
pp. 159
Author(s):  
Bahruddin Thalib ◽  
Herawati Hasan
Keyword(s):  
Candida Albicans ◽  
Test Data ◽  
Leaf Extract ◽  
Agar Medium ◽  
Acrylic Resin ◽  
Annona Muricata ◽  
Heat Curing ◽  
Heat Cure ◽  
Seeds And Fruits

Soursops (Annona muricata)are plants that have flower and sweet fruit. These plants have been used since long fortraditional medicine, especially the leaves, seeds, and fruits. This study aimed to determine the effect of concentrationof soursop leaf extract to the growth of Candida albicans on heat curing acrylic resin plate. The study begins with themanufacture of soursop leaf extract concentrations of 5%, 15%, 25%, 35%, and 45%, dilution of the extract, thepurification of C.albicans, growing C.albicans on saboraud dextrose agar medium, and minimum inhibitoryconcentration test. Data were analyzed by ANOVA followed by LSD test using SPSS 16.0. The results showed asignificant difference in the average number of C.albicans that grows between each concentration soursop leaf extract(α<0.05) and soursop leaf extract at a concentration of 45% is the most effective in inhibiting the growth of C.albicans.It was concluded that the higher the concentration of soursop leaf extract, the more effective in inhibiting the growth ofC.albicans.

scholarly journals The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study

2015 ◽  
Vol 5 (3) ◽  
pp. 81-85
Author(s):  
K Lekha ◽  
H Dharanendra Kumar
Keyword(s):  
Comparative Evaluation ◽  
Color Change ◽  
In Vitro Study ◽  
Color Stability ◽  
Acrylic Resin ◽  
Silicone Elastomer ◽  
Heat Cure ◽  
Outdoor Weathering ◽  
Cobalt Blue

ABSTRACT Maxillofacial prosthetic materials either resin or elastomer used for the fabrication of facial prostheses have their own physical and mechanical properties. Maxillofacial prosthesis frequent replacement because the elastomer or acrylic resin and its pigments undergo color changes. Purpose Evaluate the effect of outdoor weathering on color stability of silicone and heat-cure acrylic with two different pigments. Materials and methods Total of 80 circular disk specimens, 40 silicone elastomer and 40 heat-cure clear acrylic resin were fabricated in the prepared mold and two dry earth pigments burnt sienna and cobalt blue was added to the specimens and it was subjected to simulated outdoor weathering. Before and after weathering, CIE values of both control and weathering groups were recorded by using spectrophotometer and tabulated. The obtained data were subjected to statistical analysis. Results Silicone elastomer with burnt sienna showed more color change when exposed to weathering followed by silicone with cobalt blue. Heat-cure with cobalt blue had shown some color change, heat-cure and burnt sienna were the most color stable. Conclusion From the study, it can be concluded that heat-cure acrylic resin with burnt sienna most color stable than silicone elastomer. How to cite this article Lekha K, Kumar HD, Meshramkar R, Nadiger RK. The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study. Int J Prosthodont Restor Dent 2015;5(3):81-85.

scholarly journals Influence of Different Reline Materials and Processing Methods on Flexural Strength of Denture Base Material

2021 ◽  
Vol 25 (2) ◽  
pp. 108-113
Author(s):  
Ozlem Gurbuz Oflezer ◽  
Hakan Bahadır ◽  
Senem Ünver ◽  
Ceyhan Oflezer
Keyword(s):  
Flexural Strength ◽  
Base Material ◽  
Acrylic Resin ◽  
Bending Test ◽  
Control Group ◽  
Processing Methods ◽  
Denture Base ◽  
Three Point Bending ◽  
Heat Cure ◽  
And Control

Summary Background/Aim: Relining is defined as the procedure used to resurface the tissue side of a denture with new base material, thus producing an accurate adaptation is provided at the denture foundation area. During mastication, relined dentures have to withstand masticatory forces to prevent fracture. The aim of this study was to evaluate the flexural strength of acrylic resin denture base relined with different methods and materials. Material and Methods: Fourteen experimental groups and one control group were determined to consider different reline materials and processing methods. Acrylic resin specimens were prepared with the dimensions of 65× 10× 1.5 mm and reline materials (1.5 mm thickness) were placed on acrylic resins. Reline material was not used in control group specimens. Flexural strength values of relined and control specimens were measured with three-point bending test at a speed of 5 mm/min. Data were analyzed with using one way Anova and Student t tests. Results: The highest flexural strength values were shown in control group (86.51±1.08 MPa). There were significant differences among relined specimens (p< 0.05). For the relined specimens, the highest flexural strength values were found in the relined specimens with denture base material (77.90±1.93 MPa), and the lowest values were found in relined with autopolymerize acrylic material (59.81±1.50 MPa). Conclusions: Relining of the heat cure denture base material significantly decreases the flexural strength for all processing methods and materials.

scholarly journals The duration of using denture againts plaque formation of denture base

2021 ◽  
Vol 5 (2) ◽  
pp. 51-55
Author(s):  
Diana Setya Ningsih ◽  
Liana Rahmayani ◽  
Zaki Mubarak
Keyword(s):  
Acrylic Resin ◽  
Assessment Method ◽  
Plaque Formation ◽  
Research Subjects ◽  
Denture Base ◽  
Socioeconomic Condition ◽  
Plaque Score ◽  
Heat Cure ◽  
The Status ◽  
Long Time

The assessment of denture plaque can provide valuable information regarding the status of denture hygiene. Denture hygiene is strongly influenced by the patient's socioeconomic condition and the duration of denture use. The commonly used material is the heat cure acrylic resin, which can naturally increase the surface roughness if used for a long time. To determine the differences in the formation of plaque in the denture intaglio in denture use duration. As many as 14 (fourteen) respondents as research subjects used the heat-cured acrylic resin denture and came to one of the Primary clinics in Banda Aceh between April-May 2020 (During the COVID-19 Pandemic). These subjects were divided into three groups, namely 1 year, 1-3 years, and ≥ three years. In this study, the assessment of denture plaque score was conducted by the visual plaque assessment method. The colored area was the intaglio denture area, which was left for 5 minutes. The images obtained were converted into the Tarbet index (Score 1-4). The study showed that each group's denture plaque scores had different denture plaque scores. The highest denture plaque scores were found in dentures used 1-3 years. Compared to 1 year and 3 years of use. The duration of use can affect the formation of denture plaque

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