Comparative evaluation of linear dimensional changes of four commercially available heat cure acrylic resins

ABSTRACTObjectives: The absorption of water by acrylic resins is a phenomenon of considerable importance since it is accompanied by dimensional changes, a further undesirable effect of absorbed water in acrylic resins to reduce the tensile strength of the material. Solubility is also an important property because it represents the mass of soluble materials from the polymers.Methods: Ten acrylic resin-based materials were evaluated: two heat cure acrylic resins (De Trey QC-20, Meliodent Heat Cure) and eight self cure acrylic resins (Meliodent Cold, Akrileks, Akribel, Akribel Transparent, Vertex Trayplast, Formatray, Dentalon Plus, Palavit G). To evaluate water sorption and water solubility, thirty square-shaped specimens (20×20×1.5 mm) were fabricated from the wax specimens. One way ANOVA test, Tukey test and Pearson correlation coefficient performed for data.Results: Water sorption mean values varied from 11.33±0.33 to 30.46±0.55 μg/mm3. Water solubility mean values varied from -0.05±0.23 to 3.69±0.12 �g/mm3. There was statistically significant difference between mean values of the materials (P<.05). There was no linear correlation between sorption and solubility values.Conclusions: The results of the water sorption and water solubility values of both self-cured and heat-cured acrylic resins were in accordance with the ISO specification. No correlation found between water sorption and water solubility values. (Eur J Dent 2008;2:191-197)

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Comparative study of sorption and solubility of heat-cure and self-cure acrylic resins in different solutions

Indian Journal of Dental Research ◽

10.4103/0970-9290.186234 ◽

2016 ◽

Vol 27 (3) ◽

pp. 288 ◽

Cited By ~ 2

Author(s):

Ravindra Kotian ◽

Rajesh Saini ◽

Prashanthi Madhyastha ◽

N Srikant

Keyword(s):

Comparative Study ◽

Acrylic Resins ◽

Heat Cure

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Comparative Evaluation of Adhesion of Candida albicans to Heat Cure Polymethyl Methacrylate, Self-Cure Polymethyl Methacrylate and Vacuum formed Thermoplastic Resin - An In Vitro Study

Journal of Evolution of Medical and Dental Sciences ◽

10.14260/jemds/2020/861 ◽

2020 ◽

Vol 9 (52) ◽

pp. 3935-3938

Author(s):

Suvidha S. Patil ◽

Anandkumar G. Patil ◽

Veena Benakatti ◽

Raghunath Patil

Keyword(s):

Candida Albicans ◽

Polymethyl Methacrylate ◽

Comparative Evaluation ◽

In Vitro Study ◽

Vitro Study ◽

Thermoplastic Resin ◽

Heat Cure

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

International Journal of Prosthodontics and Restorative Dentistry ◽

10.5005/jp-journals-10019-1135 ◽

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.

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The Assessment of Time and Storage Environment Effects on Dimensional Changes of Two Types of Acrylic Resin Post Patterns GC and Reliance

Journal of Isfahan Dental School ◽

10.18502/ijds.v17i2.6875 ◽

2021 ◽

Author(s):

Amin Khaleghi ◽

Malihe Taghizadeh ◽

Mohsen Hormozi

Keyword(s):

Setting Time ◽

Acrylic Resin ◽

P Value ◽

Sample Number ◽

Dimensional Changes ◽

Acrylic Resins ◽

Environment Effects ◽

Two Temperatures ◽

And Storage ◽

Digital Caliper

Introduction: The purpose of this study was to investigate and compare the dimensional changes in the acrylic patterns that were stored in the different times and conditions of storage. Materials& Methods: In this experimental study The sample number was 28 in 4 groups. The mixed paste of acrylic samples were placed inside a metal mold and after setting time with the slightest of deformations it was removed. Using this method 28 samples were prepared for each material. The diameters of samples were then measured immediately using a digital caliper with a precision of 0.01 mm. The samples were then divided into four quadruple groups and stored at 22° C room temperature, 22° Cat water, Dry 4° C environment and 4° C water. The dimensions of the four groups were measured at intervals of 1, 8, 24, and 48 hours after polymerization and being removed from the metal molds. The ANOVA test was used for data analysis (p value = 0.05). Results: The findings of the current study showed that the dimensional changes of Duralay and GC acrylic resins at both 4 and 22° C in dry and water environments are decreasing over time (p value < 0.001). This study indicated that the contraction rate of two types of acrylic resins, Duralay and GC, at two temperatures of 4 and 22° C, and dry and humid conditions and at various times were not different. Conclusion: Dimensional changes in of the two types of acrylic resin, Duralay and GC, During the lapse, the procedure is going to be decreased but have not seen any statistical difference between these type of acrylic resin in environment storage.

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