Use of Clinical UV Chamber to Disinfect Dental Impressions: A Comparative Study

Aeran, Himanshu; Sharma, Sakshi; Kumar, Varun; Gupta, Neelu

doi:10.7860/jcdr/2015/14025.6353

Cited by 21 publications

(33 citation statements)

References 7 publications

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“…Another alternative is disinfection by ultraviolet (UV). UV chambers are available in some dental offices and are an effective method for destroying microorganisms without the use of chemicals 39. In 2018, a study by Samra and Bhide28 showed that disinfection by UV light has no significant impact on dimensional stability of dental impressions.…”

Section: Discussionmentioning

confidence: 99%

“…Dental impressions are inevitably contaminated by contact with saliva, blood and bacterial plaque, which contains potentially pathogenic microorganisms such as Streptococcus , Staphylococcus , Escherichia coli , Mycobacterium tuberculosis , in addition to hepatitis B and C viruses, human immunodeficiency virus (HIV) and herpes simplex virus 4567. Dentists, dental assistants, and prosthetist laboratory technicians are all at risk of cross-infection 89…”

Section: Introductionmentioning

confidence: 99%

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A simple and effective method for addition silicone impression disinfection

2019

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PURPOSE Although dental impression disinfection is determinant to reduce the cross-infection risk, some studies have shown that, in real practice, the disinfection procedures vary considerably. Thus, the aim of this study was to evaluate the antimicrobial effectiveness and the impact on the dimensional stability of addition silicone' impressions of water wash and the most clinically used disinfection solutions: 3% hydrogen peroxide, commercial disinfectant MD520 (Durr) and 1% and 5.25% sodium hypochlorite. MATERIALS AND METHODS For this investigation, dental impressions were taken on 16 volunteer dental students. The antimicrobial effectiveness of each procedure was evaluated by pour plate method. The dimensional stability was evaluated using a standardized stainless-steel model, according to ANSI/ADA nº19 specification. RESULTS The study results showed that water wash does not alter the dimensional stability of addition silicone impressions but doesn't reduce the microbial load of the material ( P >.05). On the other hand, addition silicone disinfection by immersion with 3% hydrogen peroxide, MD520 (Durr), or sodium hypochlorite at 1% and 5.25% does not alter the dimensional stability significantly but reduces > 99.9% of the microbial load of the impressions ( P <.001). CONCLUSION Addition silicone impressions should always be disinfected after water wash in order to reduce effectively the cross-infection risk. All disinfectants tested showed high antimicrobial efficiency without significant changes in three-dimensional shape of impressions. Hydrogen peroxide and sodium hypochlorite are of particular importance because are easily accessible in dental setting. The less explored hydrogen peroxide could be a valuable alternative for silicone impressions disinfection.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A simple and effective method for addition silicone impression disinfection

2019

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“…UV radiation has been used to disinfect water supplies, laboratory equipment such as in laminar flow hoods, rooms and halls in hospitals, dental impressions, and titanium implants laboratory handpieces. [16]…”

Section: Discussionmentioning

confidence: 99%

Comparative evaluation of the effect of chemical disinfectants and ultraviolet disinfection on dimensional stability of the polyvinyl siloxane impressions

Nimonkar

Belkhode

Godbole

et al. 2019

J Int Soc Prevent Communit Dent

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Context: Infection control is an important concept in the present day practice of dentistry. Disinfection of dental impressions is part of the daily routine in a dental clinics. After disinfection, it is important that impressions remain dimensionally stable. Aim: The purpose of this study was to compare the effect of chemical disinfectants and ultraviolet (UV) disinfection on the dimensional stability of the polyvinyl siloxane impressions. Objectives: The objective of the study is (1) To evaluate the effect of chemical disinfectant (2% glutaraldehyde and 1% sodium hypochlorite) and UV disinfectant on the dimensional stability of polyvinyl siloxane impression material. (2) Comparative evaluation of the dimensional discrepancy between the cast poured from the polyvinyl impressions material, that is subjected to chemical disinfectant and UV disinfectant to that of cast poured from impressions that were nondisinfected. Materials and Methods: A customized tray was fabricated to make impressions. Impressions were divided into four groups, 10 samples were disinfected with 2% glutaraldehyde for 20 min, 10 samples were disinfected with 1% sodium hypochlorite for 20 min, 10 samples were disinfected with UV light for 20 min, and 10 samples were not subjected to disinfection which served as control group. All the samples were poured after 30 min in die stone. Measurements were recorded using traveling microscope of 0.001 accuracy. Statistical analysis used in this study was the one-way ANOVA test. Results: The result showed significant dimensional changes in samples disinfected with 2% glutaraldehyde and 1% sodium hypochlorite, whereas samples disinfected with UV disinfectant unit showed no significant dimensional changes when compared with control group samples. Within the chemical groups, impressions disinfected with 1% sodium hypochlorite showed more discrepancy in the dimensions when compared to the 2% glutaraldehyde disinfected group. Conclusions: UV light disinfectant can be safely used to disinfect impressions as compared to chemical disinfectants in clinical prosthodontic procedures.

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“…13 Gamma radiation can destroy or damage living cells, 16 causes degradation of materials by increasing the temperature of the polymer, and leads to increase of resins degree of conversion. 13,20 UV light has biocide effects (UVC: wavelength between 200 and 280 nm) 21,22 and is also used for the sterilization process, especially for heat sensitive materials. 22 Unlike chemical products, chemical residues or byproducts are avoided, and light is nonpolluting and environmentally friendly.…”

Section: Chloramine-t (N-chloro-p-toluenesulfonamide Sodium Salt)mentioning

confidence: 99%