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Microbiological risk factors in dentistry. Current status of knowledge

100%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2005

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tom 12

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nr 2

157-163

Dentists belong to a professional group potentially exposed to harmful biological factors which most often are infectious microorganisms, less frequently - allergenic or toxic microorganisms. The fundamental routes of spreading harmful microorganisms in a dental surgery are: blood-borne, saliva-droplet, direct contact with a patient and with infected equipment, and water-droplet infections. In this paper, the current status of knowledge on microbiological hazards in a dentist's work is presented. Groups of microorganisms, such as prions, viruses, bacteria, fungi and protozoa, to which a dentist is, or may be exposed, are discussed. Epidemiological assessment of microbiological hazards in a dentist's work was performed and the basic principles of prevention formulated. Special attention was given to microflora in dental unit waterlines, and the biofilm persisting in them, as a source of occupational hazards specific for a dentist's workplace.

2

Work-related vision hazards in the dental office

100%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2000

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tom 07

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nr 1

3

The effect of statherin and its shortened analogues on anaerobic bacteria isolated from the oral cavity

100%

Kochanska B., Kedzia A., Kamysz W., Mackiewicz Z., Kupryszewski G.

Acta Microbiologica Polonica

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2000

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tom 49

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nr 3-4

4

Work-related noise hazards in the dental surgery

100%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2000

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tom 07

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nr 2

5

Long-term clinical performance of experimental glass-ionomer cement with the bi-functional fluid

86%

Chalas R., Wojcik-Checinska I., Strycharz-Dudziak M., Kaminska-Pikiewicz K., Bachanek T.

Journal of Pre-Clinical and Clinical Research

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2015

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tom 09

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nr 2

Introduction. Glass-ionomers have the ability to chemically bond to enamel and dentin, and are characterized by longterm fluoride release and absorption of fluoride from surrounding sources. Objective. The aim of the presented long-term clinical trial was to evaluate and compare the three-year clinical performance of the experimental glass-ionomer cement ‘SJZ/W’ with the bi-functional fluid placed in carious and non-carious cavities. Material and methods. Seventy restorations were made in adult patients of both genders. Clinical evaluation was performed at baseline and yearly intervals after placement using Ryge’s scale, considering the surface structure, anatomical form of the restoration and marginal integrity. Results. Immediately after placement, 70 restorations were assessed, 65 of which were subject to clinical evaluation after a year, 63 subject to clinical evaluation after 2 years, and 3-year evaluation was made for 55 restorations. The material showed minor changes in evaluated parameters and no differences were detected between their performance at baseline, and after three years only in anatomical shape. No post-operative sensitivity was recorded. Conclusion. The examined glass-ionomer ‘SJZ/W’ provided an acceptable clinical performance over a three-year period.

6

COVID-19 patient in a dental office – literature review

86%

Wojcicka A.

Journal of Pre-Clinical and Clinical Research

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2020

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tom 14

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nr 4

7

Refraction defects in the second year dentistry students in Silesian Medical School

86%

Gora-Kupilas K., Josko J., Malara B., Miarczynska-Jonczyk H., Kasperczyk J., Nowak E.

Polish Journal of Environmental Studies

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2004

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tom 13

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nr Suppl.2, Part 1

The aim of the study was to evaluate prevalence and risk factors of sight defects in students of dentistry using a questionnaire and base-line eye examination. Myopia was observed in 44 (50,00 %) students, hypermetropia in 3 (3,41%) students. None of spherical refraction defects was observed in 41 (46,59%) examined. There were 34 (77,27%) women and 10 (22,73%) men in the group with the diagnosed myopia. Observed myopia was qualified as low or medium grade. The low grade myopia was diagnosed in 38 students (86,36%) and the medium grade in 6 cases (13,64%). In 11 (25,00%) cases it was noticed for the first time. The statistical analysis indicated familial occurance of refraction defect in subjects.

8

Dental bioaerosol as an occupational hazard in a dentist's workplace

86%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2007

|

tom 14

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nr 2

Many-year studies on aerosols as an infection vector, despite their wide range, ignored dental aerosol. All procedures performed with the use of dental unit handpieces cause the formation of aerosol and splatter which are commonly contaminated with bacteria, viruses, fungi, often also with blood. Aerosols are liquid and solid particles, 50 μm or less in diameter, suspended in air. Splatter is usually described as a mixture of air, water and/or solid substances; water droplets in splatter are from 50 μm to several millimetres in diameter and are visible to the naked eye. The most intensive aerosol and splatter emission occurs during the work of an ultrasonic scaler tip and a bur on a high-speed handpiece. Air-water aerosol produced during dental treatment procedures emerges from a patient’s mouth and mixes with the surrounding air, thus infl uencing its composition. Because air contained in this space is the air breathed by both dentist and patient, its composition is extremely important as a potential threat to the dentist’s health. According to the author, insuffi cient awareness of health risk, working habits, and economic factors are the reasons why dentists do not apply the available and recommended methods of protection against the infl uence of bioaerosol and splatter. Behaviour protecting a dentist and an assistant from the threat resulting from the infl uence of dental aerosol cannot be limited to solated actions. The author, on the basis of the literature and own research, characterizes bioaerosol and splatter in a dental surgery and reviews a full range of protective measures against these risk factors.

9

Microbial contamination of dental unit waterlines

86%

Szymanska J., Sitkowska J., Dutkiewicz J.

Annals of Agricultural and Environmental Medicine

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2008

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tom 15

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nr 2

10

Exposure to airborne fungi during conservative dental treatment

86%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2006

|

tom 13

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nr 1

The aim of the study was a mycological assessment of bioaerosol forming during conservative dental treatment, taking into account concentration and type of fungal microflora, and evaluation of the influence of DUWL disinfecting protocol on the fungal contamination of the bioaerosol. The research was conducted on 25 operative sites located in public dental clinics. The air contained in the space between a patient and a dentist during conservative dental treatment with the use of a high-speed handpiece was examined. Air samples were taken using the portable RCS PLUS Air Sampler (BIOTEST AG, Dreieich, Germany) and ready-to-use agar YM Strips for yeast and mould fungi culture. The volume of the sampled air was 100 litres. Before disinfection, the concentration of fungi in the collected air samples at individual operative sites ranged from 4 × 101 cfu/m3 to 34 × 101 cfu/m3. The most common species was Penicillium herquei (62.17% of the total count), followed by other fungi: Alternaria alternata - 12.68%, Penicillium roseopurpureum - 9.41%, Rhizopus nigricans - 5.93%, Aspergillus terreus - 3.89%, Geotrichum candidum - 2.25%, Aspergillus glaucus group - 2.04%, Cladosporium cladosporoides - 1.23% and Penicillium diversum - 0.41%. The concentration of Penicillium herquei at individual operative sites ranged from 0 to 34 × 101 cfu/m3, mean 121.6 cfu/m3, Penicillium roseopurpureum - from 0 to 11 × 101 cfu/m3, mean 18.4 cfu/m3 and Alternaria alternata - from 0 to 18 × 101 cfu/m3, mean 24.8 cfu/m3. After disinfection, like before disinfection procedures, the prevailing species of fungi were: Penicillium herquei, Penicillium reseopurpureum and Alternaria alternata, which amounted to 62.6%, 18.28% and 11.36% of the isolated fungi, respectively. The recorded levels of total airborne fungi were lower after DUWL disinfection compared to those before disinfection.

11

Dentist's hand symptoms and high-frequency vibration

86%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2001

|

tom 08

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nr 1

12

Influence of low and high doses of fluoride on tooth germ development in rats

86%

Maciejewska I., Adamowicz-Klepalska B.

Folia Morphologica

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2000

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tom 59

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nr 4

The influence of fluoride on tooth germ development, especially mineralised tissue, is well documented in numerous dental publications, but there are few reports concerning the influence of fluoride on enamel organ and dental papilla cells. The aim of the study was to assess histologically the development of tooth germs of 20-day-old rat foetuses whose mothers drank water without fluoride or with low (10 mg) and high (110 mg) contents of natrium fluoride, starting from the 12th day of the pregnancy. The fluoride contained in drinking water in low as well as high concentration accelerated the development of enamel organ and dental papilla structures in rat foetuses. The acceleration was proportional to the content of fluoride in drinking water. No disturbances caused by high concentration of natrium fluoride were observed.

13

Environmental health risk of chronic exposure to nitrous oxide in dental practice

86%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2001

|

tom 08

|

nr 2

14

Occupational hazards of dentistry

86%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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1999

|

tom 06

|

nr 1

15

Antifungal efficacy of hydrogen peroxide in dental unit waterline disinfection

86%

Szymanska J.

Annals of Agricultural and Environmental Medicine

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2006

|

tom 13

|

nr 2

The concentration and composition of fungal flora in dental unit waterlines (DUWL) were evaluated. For this purpose, water samples from unit reservoirs and high-speed handpieces, and biofilm samples from the waterline walls from units were collected. Subsequently, analogous samples from DUWL were taken before and after disinfection using agent containing hydrogen peroxide. In the examined samples, the yeast-like fungi Candida albicans, Candida curvata and Geotrichum candidum were found. The following species of mould were also identified: Aspergillus amstelodami, Aspergillus fumigatus, Aspergillus glaucus group, Aspergillus (=Eurotium herbariorum) repens, Citromyces spp., Penicillium (glabrum) frequentans, Penicillium pusillum, Penicillium turolense and Sclerotium sclerotiorum (Sclerotinia sclerotiorum) . Before disinfection, Candida curvata and Candida albicans constituted the greatest proportion of the total fungi in the reservoirs water; in the water of handpieces - Candida albicans and Aspergillus glaucus group; and in the biofilm samples - Aspergillus glaucus group and Candida albicans. After disinfection, in all 3 kinds of samples, Candida albicans prevailed, constituting from 31.2-85.7% of the total fungi. The application of agent containing hydrogen peroxide caused a significant decrease both in the number of total fungi and individual fungal species, which confirms the product effectiveness in fungal decontamination of DUWL.

16

Enamel matrix derivative Emdogain as an adjuvant for a laterally-positioned flap in the treatment of gingival recession: an electron microscopic appraisal

86%

Lafzi A., Farahani R. M., Tubbs R. S., Roushangar L., Shoja M. M.

Folia Morphologica

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2007

|

tom 66

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nr 2

Enamel matrix derivative (EMD), such as Emdogain®, has been suggested for the improvement of wound healing in periodontal surgical therapy. The present qualitative study seeks to illustrate the ultrastructural changes associated with a human gingival wound at 10 days after the application of EMD as an adjunct to a laterally-positioned flap in a patient with gingival recession. An otherwise healthy patient, who had been suffering from bilateral gingival recession defects on teeth #23 and #26, was studied. One defect was treated with a laterally-positioned flap, while the other was treated with a combination of EMD and a laterally-positioned flap. Ten days after the operation gingival biopsy specimens were obtained from the dentogingival region and examined using a transmission electron microscope. A considerable difference was found in both the cellular and extracellular phases of EMD and non-EMD sites. The fibroblasts of EMD site were more rounded with plump cytoplasms and euchromatic nuclei. A well-developed rough endoplasmic reticulum and numerous mitochondria could be detected. In contrast, the fibroblasts of non-EMD site were of flattened spindle-like morphology. While the signs of apoptosis could rarely be detected at EMD site, apoptotic bodies and ultra-structural evidence of apoptosis (crescent-like heterochromatic nuclei and dilated nuclear envelopes) were consistent features at non-EMD site. The extracellular matrix at EMD site mainly consisted of well-organised collagen fibres, while non-EMD site contained sparse and incompletely-formed collagen fibres. Coccoid bacteria were noted within the extracellular matrix and neutrophils at non-EMD site. It seems that EMD may enhance certain features of gingival wound healing, which may be attributable to its anti-apoptotic, anti-bacterial or anti-inflammatory properties.

17

Application of stem cells in dentistry for bone regeneration

72%

Brozek R., Kurpisz M., Koczorowski R.

Journal of Physiology and Pharmacology

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2018

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tom 69

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nr 1

18

Effects of dioxins in environmental pollution on development of tooth disorders

72%

Dobrzynski M., Calkosinski I., Przywitowska I., Kobierska-Brzoza J., Czajczynska-Waszkiewicz A., Soltan E., Parulska O.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 3

319-323

Despite legal regulations limiting emissions of persistent organic pollutants (POPs), including dioxins, to the environment, they still constitute a significant component of environmental contamination. They are released in large amounts during various processes of combustion in industry, the management of refuse materials and also as a result of situations that are partially beyond our control, like fires, explosions and damage in chemical industries. Observations originating from various studies prove that exposure to dioxins results in multiple toxic effects on humans and experimental animals. Among the various disorders caused by dioxins are abnormalities in dentition. The effects of dioxin may last long after exposure.

19

Load transfer by fine threading the implant neck - a FEM study

72%

Rahimi A., Bourauel C., Jager A., Gedrange T., Heinemann F.

Journal of Physiology and Pharmacology. Supplement

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2009

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tom 60

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nr 8

107-112

20

Restoration of fractured canines in ferrets after one-step root canal treatment

72%

Bladowski M., Kotowicz-Gears A., Wojtkiewicz J.

Polish Journal of Veterinary Sciences

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2011

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tom 14

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nr 1

This article describes a one-step root canal treatment and restoration of canine teeth in ferrets. Standard brass posts were used for the reconstruction of the teeth. The procedures were performed by dentists according to all rules and procedures used in root canal treatment in humans. The teeth were immediately restored anatomically. The procedures were successfully performed in four ferrets aged between 6 and 20 months of age, in three upper and one lower canines.

Ograniczanie wyników

Microbiological risk factors in dentistry. Current status of knowledge

Work-related vision hazards in the dental office

The effect of statherin and its shortened analogues on anaerobic bacteria isolated from the oral cavity

Work-related noise hazards in the dental surgery

Long-term clinical performance of experimental glass-ionomer cement with the bi-functional fluid

COVID-19 patient in a dental office – literature review

Refraction defects in the second year dentistry students in Silesian Medical School

Dental bioaerosol as an occupational hazard in a dentist's workplace

Microbial contamination of dental unit waterlines

Exposure to airborne fungi during conservative dental treatment

Dentist's hand symptoms and high-frequency vibration

Influence of low and high doses of fluoride on tooth germ development in rats

Environmental health risk of chronic exposure to nitrous oxide in dental practice

Occupational hazards of dentistry

Antifungal efficacy of hydrogen peroxide in dental unit waterline disinfection

Enamel matrix derivative Emdogain as an adjuvant for a laterally-positioned flap in the treatment of gingival recession: an electron microscopic appraisal

Application of stem cells in dentistry for bone regeneration

Effects of dioxins in environmental pollution on development of tooth disorders

Load transfer by fine threading the implant neck - a FEM study

Restoration of fractured canines in ferrets after one-step root canal treatment