Compressive Strength of Three Types of Heat-Cure Acrylic Resins: Acropars, Acrosun, and Meliodent

Improvement of the antibacterial properties of acrylic resins, used in the construction of removable orthodontic appliances, is an important strategy to reduce the incidence of caries and oral diseases in orthodontic treatments. The addition of antimicrobial agents to acrylic resins is one of the effective methods to enhance the antimicrobial properties of these materials. However, one main concern is that modification of acrylic resin has negative effects on its mechanical properties. Recently, chitosan nanoparticles (NPs), as biocompatible and biodegradable polysaccharides with remarkable antimicrobial properties, have been used in different areas of dentistry and medicine. This study aimed to investigate the effects of adding chitosan NPs on the mechanical properties of a cold-cure orthodontic acrylic resin. The chitosan NPs were added to the acrylic resin in various weight percentages: 0% (control), 0.5%, 1%, 2%, and 4%. The flexural strength, compressive strength, Vickers microhardness, and impact strength measurements were performed for all five groups. The results showed that adding up to 1% (w/w) chitosan NPs to an acrylic resin had no significant negative effects on its flexural strength and compressive strength, while it decreased these parameters at weight percentages of 2% and 4% (w/w). The results also revealed that modification of acrylic resin with chitosan NPs up to 4% had no significant negative effects on the microhardness and impact strength of acrylic resin. In conclusion, the addition of chitosan NPs up to 1% (w/w) had no significant negative effects on the mechanical properties of cold-cure acrylic resin.

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

Contemporary Clinical Dentistry ◽

10.4103/0976-237x.86452 ◽

2011 ◽

Vol 2 (3) ◽

pp. 182 ◽

Cited By ~ 2

Author(s):

Saryu Arora ◽

Sushant Garg ◽

SK Khindaria ◽

Sanjay Mittal

Keyword(s):

Comparative Evaluation ◽

Dimensional Changes ◽

Acrylic Resins ◽

Heat Cure

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Comparative evaluation of flexural strength of conventional and reinforced heat cure acrylic resins: An In vitro study

Journal of Dental Research and Review ◽

10.4103/jdrr.jdrr_7_17 ◽

2017 ◽

Vol 4 (1) ◽

pp. 9

Author(s):

Ravikanth Anne ◽

Gopinath Anne ◽

NagarjunaPrasad Mukarla ◽

Prakash Manne ◽

SureshBabu Muvva ◽

...

Keyword(s):

Flexural Strength ◽

Comparative Evaluation ◽

In Vitro Study ◽

Vitro Study ◽

Acrylic Resins ◽

Heat Cure

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Effect of Household Denture Cleansers on Color Stability and Tensile Bond Strength of Two Different Heat Polymerized Acrylic Resins

International Journal of Prosthodontics and Restorative Dentistry ◽

10.5005/jp-journals-10019-1138 ◽

2015 ◽

Vol 5 (4) ◽

pp. 95-100

Author(s):

Ramesh Nadiger ◽

Anupama Suresh Patankar ◽

Paulami Bagchi

Keyword(s):

Tensile Strength ◽

Bond Strength ◽

Sodium Hypochlorite ◽

Testing Machine ◽

Color Stability ◽

Tensile Bond Strength ◽

Control Group ◽

Acrylic Resins ◽

Heat Cure ◽

Denture Cleansers

ABSTRACT Aim Denture cleansers are used not only to clean dentures but also for disinfection of dentures. Among household denture cleansers, bleach (which contains sodium hypochlorite) and vinegar (which contains acetic acid) have been found to be powerful disinfecting agents. The objectives of this in vitro study were to evaluate and compare the color stability and tensile bond strength of Trevalon and Lucitone 199 heat-cured resins after immersing in household denture cleansers like 1% household bleach and 50% vinegar. Methodology A total of 48 Trevalon and Lucitone 199 heat- cure resin samples respectively were fabricated. The samples were divided into three groups of 16 samples each. They were immersed in 1% bleach, 50% vinegar and water (control) respectively. The samples were alternatively immersed in cleanser and water for 8 hours for 20 days simulating 30 days of use. At the end of 20 days, color stability and tensile strength were assessed with the help of spectro-guide and Instron universal testing machine respectively. Results Sodium hypochlorite and vinegar affected the color stability of Lucitone 199 heat-cure acrylic resin. The color of Trevalon heat-cure resin remained unaltered after immersion in both the cleansers. The change in tensile strength of both the resins was not significant after immersion in both the cleansers as compared with water which was used as control group. Conclusion This study concludes that for disinfection and cleansing of denture, sodium hypochlorite can be considered as long as the acrylic used is cross linked. How to cite this article Patankar AS, Meshramkar R, Nadiger R, Bagchi P. Effect of Household Denture Cleansers on Color Stability and Tensile Bond Strength of Two Different Heat Polymerized Acrylic Resins. Int J Prosthodont Restor Dent 2015;5(4):95-100.

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