[No Title Available]

Agostinho, Alessandra Marçal; Miyoshi, Paula Regina; Gnoatto, Nelson; Paranhos, Helena de Freitas Oliveira; Figueiredo, Luciene Cristina; Salvador, Sérgio Luiz de Souza

doi:10.1590/s0103-64402004000200010

Cited by 27 publications

(4 citation statements)

References 13 publications

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“…In the present study, 96.2% of the sample taken from the laboratory showed microbial contamination signs. A previous research has reported that dental polishing is a source of infection transmission [24]. In a study on cross-infection in prosthodontics laboratories, it was found that they were substandard in this respect and there was no protocol or training program to limit cross-infection in these laboratories [25].…”

Section: Discussionmentioning

confidence: 99%

Investigation of Microbial Contamination in the Clinic and Laboratory of the Prosthodontics Department of Dental School

Taheri

Shahabinezhad

Torabi

et al. 2021

Pesqui. Bras. Odontopediatria Clín. Integr.

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Objective: To determine the level of clinical contamination in the clinic and laboratory of the prosthodontics department of Kerman Dental School. Material and Methods: Clinical surfaces of the dental units, the laboratory, and the professors' lounge of the prosthodontics department were randomly sampled. The sampled surfaces included the dental units' console, light switch, light handle, headrest, and air-water spray syringe in the clinic, plastering tables, buttons of the vibrator, polishing, and trimmer machines, acryl tables, handles of pressure pot and press machine, handpiece holders, work desks, and drawer handles in the laboratory, and desks, computer mouse and keyboard, telephone sets, and doorknob in the professor's lounge. The samples were examined for the type and growth of microorganisms. The data were entered into SPSS, where they were analyzed using the chi-square test at the 0.05 significance level. Results: Of all the samples taken, 89.9% showed microbial contamination. The most common type of contamination was fungus (34.8%) and the least common types were Enterococcus faecalis and Staphylococcus epidermidis (1.1%). The second and third most common types of bacteria in the samples were Staphylococcus aureus (18%) and Pseudomonas aeruginosa (12.4%), respectively. There was no significant difference between the frequencies of microbial contamination in the clinic, the laboratory, and the professors' lounge. Conclusion: Given the strong chance of cross-infection in the examined department and laboratory, it is necessary to enforce protocols for proper disinfection of surfaces before, between and after treatments.

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Section: Discussionmentioning

confidence: 99%

Investigation of Microbial Contamination in the Clinic and Laboratory of the Prosthodontics Department of Dental School

Taheri

Shahabinezhad

Torabi

et al. 2021

Pesqui. Bras. Odontopediatria Clín. Integr.

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“…This study investigated the influence of chemical disinfection of CS coated PMMA and PETG materials in order to pursue international recommendations and to reduce cross contamination risks [24,25,26]. All three stated null hypotheses had to be fully or partly rejected.…”

Section: Discussionmentioning

confidence: 99%

“…Surgical splints and dentures are commonly prepared in a dental laboratory. To minimize the risk of cross contamination all dentures, and prosthodontic materials prepared in a dental laboratory or transported between a laboratory and a dental practice, have to be sterilized or disinfected [24,25,26]. Steam sterilization in an autoclave is a common method for medical/dental devices, but it is limited to heat and moisture resistant materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of Chemical Disinfection on Chitosan Coated PMMA and PETG Surfaces—An In Vitro Study

et al. 2018

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Abstract:In oral sciences, chitosan application is of interest due to its antimicrobial and hemostatic activity. Chitosan coating of dentures and other intraoral devices could be beneficial for treatment of denture stomatitis or in the management of postoperative bleeding. Disinfection of dentures and prosthodontic materials is crucial before their use in patients. This study investigated the influence of chemical disinfectants on chitosan-coated surfaces. A total of 100 specimens were made: 50 of PMMA (polymethyl methacrylate), and 50 of PETG (polyethylene terephthalate glycol-modified) material and coated with 2% chitosan acetate solution. In each material, 5 groups (10 specimens each) were established and disinfected with Printosept-ID (L1), MD 520 (L2), Silosept (L3), or Dentavon (L4), or stored in distilled water (L0, control group). After disinfection, all specimens underwent abrasion tests (30,000 cycles in a tooth-brushing simulator). Areas without chitosan coating were measured by digital planimetry both before and after the disinfection/abrasion procedure and a damage-score was calculated. Regarding chitosan coating, the statistical analysis showed a significant influence of the disinfectants tested and significant differences between disinfectants (p < 0.05). Chitosan coating was most stable on PMMA and PETG after disinfection with MD 520 (L2). Otherwise, active oxygen containing disinfectants (L3, L4) led to the greatest alterations in the chitosan coating.

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“…Moreover, cross-contamination can occur between the prosthodontic laboratory and dental office as well as between patients and dental personnel. It has been reported that even denture laboratory pumice and polishing wheel can be contaminated 2,11 . U radovima se navode slučajevi kontaminacije bimštajna i četki za poliranje u zubotehničkim laboratorijama 2,11 .…”

Section: Introductionmentioning

confidence: 99%

The effect of herbal extract Foeniculum vulgare Mill. solution on the mechanical and wetting properties of heat polymerized denture base resin

Petrović¹,

Kitić²,

Samardžić³

et al. 2016

Acta stomatologica Naissi

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Uvod. Komercijalno dosupna hemijska sredstva koja se upotrebljavaju za čišćenje proteza imaju negativan uticaj na mehanička svojstva proteze. Stoga, postoji potreba za pronalaženjem alternative koja neće menjati površinska svojstva materijala. Cilj. U ovom radu je ispitivan uticaj ekstrakta biljne vrste Foeniculum vulgare Mill. na kvašenje i mehanička svojstva toplopolimerizujućeg akrilata za bazu pločaste zubne proteze u poređenju sa istim svojstvima iste smole u prirodnom stanju (na vazduhu) i izložene samo vodenoj sredini. Maaterijali i metode. Uzorci akrilata u obliku parvougaonika (15 mm x 15 mm x 3 mm) su pripremljeni i podeljeni na: (i) uzorak koji je koninuirano bio izložen vazduhu-AIR; (ii) uzorak koji je kontinuirano bio izložen destilovanoj vodi-DW; i (iii) uzorak koji je bio izložen 10% rastvoru lista morača-PES. Svojstva kvašenja su merena metodom sesilovie kapi, pri čemu su mehanička svojstva analizirana metodom nanoindentacije. Rezultati. Rezultati su pokazali da su uzorci AIR imali najnižu vrednost ΘC vrednost 64.5±2.3 °, dok su drugi uzorci DW i PES imali sličnu ΘC vrednost (75.4±3.3 °, 75.7±4.7 °, redom). Štaviše, nije bilo statistički značajne razlike u koeficijentu tvrdoće, dok je Jungov modul elastičnosti pokazao značajnu razliku (p < 0,005) samo između uzoraka AIR i DW. Zaključak. Na osnovu dobijenih vrednosti potvrđeno je da ekstrakt biljne vrste morač može biti uspešno korišćen i efikasan kao sredstvo za čišćenje, bez degradcaije površine proteze.

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[No Title Available]

Cited by 27 publications

References 13 publications

Investigation of Microbial Contamination in the Clinic and Laboratory of the Prosthodontics Department of Dental School

Investigation of Microbial Contamination in the Clinic and Laboratory of the Prosthodontics Department of Dental School

Effect of Chemical Disinfection on Chitosan Coated PMMA and PETG Surfaces—An In Vitro Study

The effect of herbal extract Foeniculum vulgare Mill. solution on the mechanical and wetting properties of heat polymerized denture base resin

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