Surface detail, compressive strength, and dimensional accuracy of gypsum casts after repeated immersion in hypochlorite solution

Abdullah, Mohammed

doi:10.1016/j.prosdent.2006.03.019

Cited by 42 publications

(49 citation statements)

References 15 publications

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“…The important factors considered in disinfection of dental impressions include the effectiveness, chemical stability of the disinfecting solution, and the influence of the disinfectant procedure on the dimensional stability and surface reproduction of the impression and the resultant casts . Impressions must be treated with disinfectants that do not affect their dimensional stability . The most effective means of minimizing infection risks is chemical disinfection of impressions…”

Section: Discussionmentioning

confidence: 99%

Comprehensive Review and Comparison of the Disinfection Techniques Currently Available in the Literature

Ahila

Muthukumar

2017

Journal of Prosthodontics

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The goal of disinfection in the dental office is to prevent the spread of infection from one patient to another and maintain the safety of the dental care providers. Prevention of cross infection has significant effect on infection control. The standard procedure of rinsing impressions under tap water immediately after removal from the mouth eliminates microorganisms along with saliva and blood. A broad search on published literature was done using the keywords impression materials, disinfection method, and sterilization of dental impression from 1980 to 2016 in Medline, Google Scholar, the internet, and textbooks. This article critically analyzes the various published methods of dental impression disinfection in dentistry.

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Section: Discussionmentioning

confidence: 99%

Comprehensive Review and Comparison of the Disinfection Techniques Currently Available in the Literature

Ahila

Muthukumar

2017

Journal of Prosthodontics

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“…Dental stone facilitates the diagnosis, treatment planning, and fabrication of indirect dental restorations 1 and is the material most commonly used for preparing casts. [2][3][4] Many different types of cast materials exist and have different indications for use. 5,6 The criteria used to select the stone include its mechanical properties (such as, surface roughness), 7 detail.…”

Section: Discussionmentioning

confidence: 99%

“…5,6 The criteria used to select the stone include its mechanical properties (such as, surface roughness), 7 detail. 4,12 Research questions have persisted regarding the determination of the appropriate setting time in clinical and laboratory procedures because mechanical properties alter with time. [1][2][3][9][10][11][12] How the postpouring time (the time between the pouring and removal of the dental stone cast from the impressions) affects the mechanical properties of the stone has not been established.…”

Section: Discussionmentioning

confidence: 99%

The influence of postpouring time on the roughness, compressive strength, and diametric tensile strength of dental stone

Cesero

Mota

Burnett

et al. 2014

The Journal of Prosthetic Dentistry

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“…[6] There was no significant difference in dimensional change between gypsum products immersed in sodium hypochlorite and glutaraldehyde and change was due to interaction between the solution and dental stone. [21]…”

Section: Discussionmentioning

confidence: 99%

The effect of repeated immersion of gypsum cast in sodium hypochlorite and glutaraldehyde on its physical properties: An in vitro study

Kumar

Reddy²,

Karthigeyan³

et al. 2012

J Pharm Bioall Sci

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Background:One method used to disinfect a dental cast is immersion in a disinfecting solution. Repeated immersion of a cast in disinfectant may affect its physical properties.Purpose:The purpose of this study was to evaluate the changes in dimensional accuracy and hardness of the dental casts as a result of repeated disinfection in 0.525% sodium hypochlorite and 2% glutaraldehyde solutions.Materials and Methods:Sixty specimens were made of type III dental stone. Twenty specimens were immersed in slurry, a supernatant solution of calcium sulfate in distilled water (control casts), 20 specimens in 0.525% sodium hypochlorite, and 20 specimens in 2% glutaraldehyde solutions for 30 min and air dried for 24 h. This process was repeated for 7 times for testing. Linear dimensional change and hardness were determined according to American National Standards Institute/American Dental Association (ANSI/ADA) standards. The data were analyzed using two-way analysis of variance.Results:For specimens prepared with type III stones, treatment was by immersion in slurry (group I – control casts), and by immersion in 0.525% sodium hypochlorite (group II – test group 1) and in 2% glutaraldehyde solution (group III – test group 2). The specimens treated with sodium hypochlorite and glutaraldehyde showed more linear dimensional change compared to the specimens treated in slurry. However, the difference between test casts and control casts was significant. But the difference between the two test groups was not significant. Both the test groups showed decrease in hardness of the specimens compared to that specimens in control group. But the difference between two test groups was not significant in hardness. However,the values remained close to ANSI/ADA standards.Conclusion:The results demonstrated that repeated immersion of type III dental stone specimens in slurry with distilled water, 0.525% sodium hypochlorite and 2% glutaraldehyde, along with drying in air, caused a significant increase in linear dimension and a significant decrease in hardness.

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Surface detail, compressive strength, and dimensional accuracy of gypsum casts after repeated immersion in hypochlorite solution

Cited by 42 publications

References 15 publications

Comprehensive Review and Comparison of the Disinfection Techniques Currently Available in the Literature

Comprehensive Review and Comparison of the Disinfection Techniques Currently Available in the Literature

The influence of postpouring time on the roughness, compressive strength, and diametric tensile strength of dental stone

The effect of repeated immersion of gypsum cast in sodium hypochlorite and glutaraldehyde on its physical properties: An in vitro study

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