[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 29 publications

(6 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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“…Yapılan araştırmalarda; diş laboratuvarlarından kliniklere gelen protezlerin yarısından fazlasının bakteriler ile kontamine olduğu (6) ve yine tamir edilmek üzere laboratuvarlara gönderilen kırık protezlerin %90'ının laboratuvarda patojenlerle kontamine olduğu bildirilmiştir (7). Bunların yanı sıra laboratuvarlarda kullanılan pomzaların; mikrokoklar, pseudomonas, kandida ve diğer mantarlar, alkalijenler, Gram-negatif acinetobacter basilleri gibi bakterilerle büyük ölçüde kontamine olduğu gösterilmiştir (8,9). Bu nedenle kliniklerden gelen materyallerin yanı sıra laboratuvarda hazırlanmış olan diş protezleri, indirekt restorasyonlar, implant parçaları ve diş tedavi apareyleri gibi materyallerin de hastalara teslimi öncesinde dezenfekte edilmeleri gerekmektedir (10).…”

Section: Introductionunclassified

Evaluation of Awareness and Attitude Regarding Infection Control Practices in Dental Prosthesis Laboratories

Keles,

Aslan,

Kav

et al. 2023

Klimik Derg

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Objective: Transport of blood and saliva-contaminated materials such as impressions and prostheses between clinics and laboratories increases the risk of cross-infection. This study evaluates dental technicians knowledge, attitudes, and behaviors about infection control practices. Methods: This cross-sectional study was conducted through an online questionnaire for dental technicians working in Istanbul between July 03, 2021, and January 31, 2022. The questionnaire comprised 38 multiple-choice questions on demographic information, infection control awareness, disinfection practices, personal protective equipment use, and Hepatitis B vaccination. Results: In the research, 256 dental technicians took part, and 73% of them graduated from were graduates of dental lab technician school. The rate of those who received infection control training was 60.2%. 72.3% of the participants were vaccinated against hepatitis B, and 8.6% were not vaccinated due to their immunity. 59.4% of dentists did not inform the laboratories about the sent materials disinfection status. Although 97.3% of the technicians thought there was a risk of infectious disease transmission from impressions and prostheses delivered from dental clinics, they disinfected 88.7% of the alginate impressions and 87.5% of the silicone and polyether impressions. The rate of those who used all the equipment, gloves, masks, and eye protection during disinfection was 31.7%. Medical wastes were separated in 40.6% of the laboratories. 69.9% of technicians thought the infection control procedures were adequate in their laboratories, whereas 20.7% did not. Conclusion: It would be beneficial for dental technicians to receive infection control training to increase their knowledge about disinfection practices and the use of personal protective equipment. We suggest that contaminated materials be transported to laboratories after being disinfected at dental clinics, infection control guidelines for dental prosthesis laboratories should be established, and regular inspections should be conducted to reduce the risk of cross-infection.

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[No Title Available]

Cited by 29 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

Evaluation of Awareness and Attitude Regarding Infection Control Practices in Dental Prosthesis Laboratories

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