Low methicillin-resistant Staphylococcus aureus carriage rate among Italian dental students

Petti, Stefano; Kakisina, Naomy; Volgenant, C.M.C.; Messano, Giuseppe Alessio; Barbato, Ersilia; Passariello, Claudio; Soet, J.J. de

doi:10.1016/j.ajic.2015.08.008

Cited by 21 publications

(20 citation statements)

References 21 publications

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“…In various studies investigating the MRSA carriage rate among DHCPs, including dental students, the rate reported varied significantly from 0% to 21% ( Table ). At a glance, the rates obtained from the first two studies differed greatly from those in the remaining studies. The results obtained from the first two studies are close to the carriage rates observed during outbreaks of MRSA infection.…”

Section: Discussionmentioning

confidence: 51%

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Knowledge, attitudes and practices regarding methicillin-resistant Staphylococcus aureus (MRSA) infection control and nasal MRSA carriage rate among dental health-care professionals

Yoo

Kwak

Jeong

et al. 2018

International Dental Journal

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Section: Discussionmentioning

confidence: 51%

“…The mostly likely explanation is that those institutions were experiencing an outbreak of MRSA during the survey. The last four studies showed much lower rates, ranging from 0% to 3.2%. In particular, we reported that 3.1% of dental students in the same region had MRSA colonisation during a survey from December 2014 to January 2015.…”

Section: Discussionmentioning

confidence: 93%

Knowledge, attitudes and practices regarding methicillin-resistant Staphylococcus aureus (MRSA) infection control and nasal MRSA carriage rate among dental health-care professionals

Yoo

Kwak

Jeong

et al. 2018

International Dental Journal

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“…Despite the many differences between studies, nowadays there is a probable occupational exposure, from carriage rates, among DHCP and HCWs. This is higher in dental students ( Table 1), but would seem evident in the last years [14,[91][92][93][94][95]. Nasal MRSA colonization, confirmed by the presence of the mecA gene that encodes a low-affinity penicillin-binding protein, occurs in dental students (3.1%), especially those who have clinical experience [94].…”

Section: Staphylococcus Aureus and Mrsamentioning

confidence: 97%

“…S. aureus was normally absent or its colonization was very low in oral biofilm and ecological oral niches as reported in older evidence or not considered as a topic [14,43,90]. More recent data show that the presence of S. aureus in the oral cavity is more frequent and, nowadays, is to be considered a member of the oral microbiota (Table 1) [15,84,[91][92][93][94][95][96][97][98][99][100][101][102][103][104][105]. Recently, metaproteomic analysis of human salivary supernatant from healthy persons was able to identify peptides from 124 microbial species including Staphylococcus [85].…”

Section: Staphylococcus Aureus and Mrsamentioning

confidence: 98%

“…Here, we report updated data on S. aureus and MRSA carriage rates among dental students, dental patients, HCWs, and dental healthcare personnel (DHCP) in Table 1 [91][92][93][94][95][96][97][98][99][100][101][102][103]. Despite the many differences between studies, nowadays there is a probable occupational exposure, from carriage rates, among DHCP and HCWs.…”

Section: Staphylococcus Aureus and Mrsamentioning

confidence: 99%

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Infection Control in Dentistry and Drug-Resistant Infectious Agents: A Burning Issue. Part 1

Barenghi¹,

Barenghi²,

Blasio³

2020

Surgical Infections - Some Facts

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Using molecular biological methods and retrospective investigations, some outbreaks in dental settings have been proven to be caused by mainly blood-borne viruses and water-borne bacteria. Nowadays, drug-resistant bacteria seem further hazards taking into account the worldwide overuse of antibiotics in dentistry, the limited awareness on infection prevention guidelines, and the lapses and errors during infection prevention (reported in more detail in Part 2). We chose MRSA and VRE as markers since they are considered prioritized bacteria according antibiotic resistance threats. Antibiotic-resistant bacterial infections inside of dental setting are relevant, and we argue about some hazards in dentistry, including dedicated surgeries. MRSA has a key role for its colonization in patients and dental workers, presence on gloves, resistance (days-months on dry inanimate surfaces), the contamination of different clinical contact surfaces in dental settings, the ability of some strains to produce biofilm, and finally its estimated low infective dose. For better dental patient and healthcare personnel safety, we need evidence-based guidelines to improve education and training initiatives in surgery.

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Contamination of surgical mask during aerosol-producing dental treatments

et al. 2020

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Objectives Surgical masks are usually contaminated during dental treatment. So far it has not been investigated whether a surgical mask itself can be a source of microbial transmission. The aim of this study was therefore to investigate the microbiological contamination of surgical masks during dental treatment and the transfer of microorganisms from the mask to the hands. Materials and methods Five dental treatment modalities were studied: carious cavity preparation (P-caries, n = 10), tooth substance preparation (P-tooth, n = 10), trepanation and root canal treatment (P-endo, n = 10), supragingival ultrasonic application (US-supra, n = 10), and subgingival periodontal ultrasonic instrumentation (US-sub, n = 10). Bacterial contamination of mask and gloves worn during treatment was tested by imprinting on agar plates. Additionally, before masks were tested, their outer surface was touched with a new sterile glove. This glove was also imprinted on agar. Bacteria were identified by MALDI TOF mass spectrometry. Colony-forming units (CFU) were scored: score 0: 0 CFU, score 1: < 102 CFU, score 2: > 102 CFU, score 3: dense microbial growth. Results All masks and all gloves used during treatment displayed bacterial contamination (sample scores 0/1/2/3: masks 0/46/3/1 and gloves 0/31/10/9). After touching the masks with new sterile gloves, microorganisms were recovered with the following contamination scores: P-caries: 4/6/0/0, P-tooth: 2/8/0/0: P-endo: 7/3/0/0, US-supra: 0/9/1/0, US-sub: 2/8/0/0. No statistically significant differences were detected between the treatment modalities. Streptococci spp. and Staphylococci spp. representing the oral and cutaneous flora dominated. Conclusions Surgical masks are contaminated after aerosol-producing dental treatment procedures. Used masks have a potential to be a source of bacterial contamination of the hands. Clinical relevance Dental staff should avoid touching the outer surface of masks with their hands to prevent transmission of pathogens. It is recommendable to change the mask after each treated patient followed by hand disinfection.

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Low methicillin-resistant Staphylococcus aureus carriage rate among Italian dental students

Cited by 21 publications

References 21 publications

Knowledge, attitudes and practices regarding methicillin-resistant Staphylococcus aureus (MRSA) infection control and nasal MRSA carriage rate among dental health-care professionals

Knowledge, attitudes and practices regarding methicillin-resistant Staphylococcus aureus (MRSA) infection control and nasal MRSA carriage rate among dental health-care professionals

Infection Control in Dentistry and Drug-Resistant Infectious Agents: A Burning Issue. Part 1

Contamination of surgical mask during aerosol-producing dental treatments

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