Document Type : Original Article


1 Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, King George’s Medical University, Lucknow, Uttar Pradesh, India

2 Department of Periodontology, Dental Institute, Rajendra Institute of Medical Sciences (RIMS),Ranchi, Jharkhand, India

3 Kalka Dental College and Hospital, Meerut, Uttar Pradesh, India


BACKGROUND: Oral health-care providers are always at a risk of transmitting or acquiring airborne,
saliva-borne, or blood-borne infections due to their proximity to the patient’s mouth, contact with
saliva, and handling of sharp instruments. the aim this study was to evaluate the knowledge of the
dentists regarding COVID-19, methods to prevent its transmission, and implications of COVID-19
in dental treatment.
MATERIALS AND METHODS: It was a cross-sectional online survey. There were 35 questions
in total, divided into sections of knowledge of COVID-19, practices of personal protective
equipment (PPE), and knowledge of implications of COVID-19 in dental treatment. Both convenience
sampling and snowball sampling were used, so that maximal participation could be ensured. The
results were analyzed using descriptive statistics and making comparisons among various groups.
The data were summarized as proportions and percentages (%). All the associations were tested
using the Chi‑square test, ANOVA, and Pearson’s correlation coefficient. Statistical analyses were
performed using SPSS version 19.0.
RESULTS: 26.8% of respondents had a high knowledge, 61.5% had good knowledge, 10.1%
had low knowledge, and 6 (1.5%) had nil knowledge about COVID‑19. No significant association
was found between qualification and knowledge level among the respondents (P = 0.053). Both
graduates and postgraduates had low knowledge regarding effective PPE components (P = 0.053),
donning (P = 0.888), and doffing (P = 0.745). Only 52.9% of postgraduates and 43.7% graduates
answered correctly about the sequence of donning, and 47.9% of postgraduates and 46.1% of
graduates had knowledge regarding correct doffing sequence of PPE. Furthermore, knowledge was
low regarding the implications of COVID-19 in dental treatment.
CONCLUSION: Although the dentists were found to have high/good knowledge scores regarding
COVID-19, there was a lack of knowledge regarding hand hygiene, proper use of PPE, and implications
of COVID-19 in dental treatment. Thus, they need to be trained and sensitized regarding the same.


  1. Kobza J, Pastuszka JS, Bragoszewska E. Do exposures to
    aerosols pose a risk to dental professionals? Occup Med (Lond)
    2. Hallier C, Williams DW, Potts AJ, Lewis MA. A pilot study of
    bioaerosol reduction using an air cleaning system during dental
    procedures. Br Dent J 2010;209:E14.
    3. Meng L, Hua F, Bian Z. Coronavirus Disease 2019 (COVID‑19):
    Emerging and Future Challenges for Dental and Oral Medicine.
    J Dent Res 2020;99:481‑7.
    4. Ather A, Patel B, Ruparel NB, Diogenes A, Hargreaves KM.
    Coronavirus Disease 19 (COVID‑19): Implications for Clinical
    Dental Care. J Endod 2020;46:584‑95.
    5. Rautemaa R, Nordberg A, Wuolijoki‑Saaristo K, Meurman JH.
    Bacterial aerosols in dental practice‑A potential hospital infection
    problem? J Hosp Infect 2006;64:76‑81.
    6. Meselson M. Droplets and Aerosols in the Transmission of
    SARS‑CoV‑2. N Engl J Med 2020;382:2063.
    7. Coulthard P. Dentistry and coronavirus (COVID‑19)‑moral
    decision‑making. Br Dent J 2020;228:503‑5.
    8. Verbeek JH, Ijaz S, Mischke C, Ruotsalainen JH, Mäkelä E,
    Neuvonen K, et al. Personal protective equipment for preventing
    highly infectious diseases due to exposure to contaminated
    body fluids in healthcare staff. Cochrane Database Syst Rev
    9. Suen LK, Guo YP, Tong DW, Leung PH, Lung D, Ng MS,
    et al. Self‑contamination during doffing of personal protective
    equipment by healthcare workers to prevent Ebola transmission.
    Antimicrob Resist Infect Control 2018;7:157.
    10. Huang Y. The SARS epidemic and its aftermath in China:
    A political perspective. In: Institute of Medicine (US) Forum on
    Microbial Threats; Knobler S, Mahmoud A, Lemon S, et al., editors.
    Learning from SARS: Preparing for the Next Disease Outbreak:
    Workshop Summary. Washington (DC): National Academies
    Press (US); 2004.
    11. Al‑Omari A, Rabaan AA, Salih S, Al‑Tawfiq JA, Memish ZA.
    MERS coronavirus outbreak: Implications for emerging viral
    infections. Diagn Microbiol Infect Dis 2019;93:265‑85.
    12. Mahase E. China coronavirus: WHO declares international
    emergency as death toll exceeds 200. BMJ 2020;368:m408.
    13. Bains VK. COVID‑19 pandemic: Current scenario and our role.
    Asian J Oral Health Allied Sci 2020;10:1.
    14. Poller B, Hall S, Bailey C, Gregory S, Clark R, Roberts P, et al.
    ‘VIOLET’: A fluorescence‑based simulation exercise for training
    healthcare workers in the use of personal protective equipment.
    J Hosp Infect 2018;99:229‑35.
    15. Phan LT, Maita D, Mortiz DC, Weber R, Fritzen‑Pedicini C,
    Bleasdale SC, et al. Personal protective equipment doffing practices
    of healthcare workers. J Occup Environ Hyg 2019;16:575‑81.
    16. Kwon JH, Burnham CD, Reske KA, Liang SY, Hink T,
    Wallace MA, et al. Assessment of Healthcare Worker Protocol
    Deviations and Self‑Contamination During Personal Protective
    Equipment Donning and Doffing. Infect Control Hosp Epidemiol
    17. Fogel I, David O, Balik CH, Eisenkraft A, Poles L, Shental O,
    et al. The association between self‑perceived proficiency of
    personal protective equipment and objective performance: An
    observational study during a bioterrorism simulation drill. Am
    J Infect Control 2017;45:1238‑42.
    18. Available from:
    reveals‑gaps‑knowledge‑and‑practice. [Last accessed on 2020
    May 01].
    19. Wiles LL, Rose D, Curry‑Lourenco K, Swift D. Bringing learning
    to light: innovative instructional strategies for teaching infection
    control to nursing students. Nurs Educ Perspect 2015;36:190e1.
    20. Lehotsky Á, Szilágyi L, Ferenci T, Kovács L, Pethes R, Wéber G,
    et al. Quantitative impact of direct, personal feedback on hand
    hygiene technique. J Hosp Infect 2015;91:81‑4.
    21. Szilágyi L, Haidegger T, Lehotsky A, Nagy M, Csonka EA, Sun X,
    et al. A large‑scale assessment of hand hygiene quality and the
    effectiveness of the “WHO 6‑steps”. BMC Infect Dis 2013;13:249.
  2. 22. PengX, XuX, LiY, Cheng L, ZhouX, Ren B. Transmission routes of
    2019‑nCoV and controls in dental practice. Int J Oral Sci 2020;12:9.
    23. Bains VK, Bains R. Is oral hygiene as important as hand hygiene
    during COVID‑19 pandemic? Asian J Oral Health Allied Sci
    24. Marui VC, Souto MLS, Rovai ES, Romito GA, Chambrone L,
    Pannuti CM. Efficacy of preprocedural mouthrinses in the
    reduction of microorganisms in aerosol: A systematic review.
    J Am Dent Assoc 2019;150:1015‑260.
    25. Vandenberghe B, Jacobs R, Bosmans H. Modern dental imaging:
    a review of the current technology and clinical applications in
    dental practice. Eur Radiol 2010;20:2637‑55.