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The impact of COVID-19 pandemic on dental practice in Iran: a questionnaire-based report

BMC Oral Health volume 20, Article number: 354 (2020) Cite this article

Abstract

Background

The highly contagious nature of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV2), besides the fact that dental procedures commonly generate blood and saliva droplets that could lead to the contagion have resulted in the closure of many dental clinics. In the present study, we aimed to evaluate the impact of coronavirus disease 2019 (COVID-19) pandemic on dental practice by conducting an online questionnaire among the Iranian dental practitioners and finding their perspectives on the subject.

Methods

This report is based on a questionnaire that was conducted among Iranian dentists. The survey included questions that evaluate the dentists’ perceptions and attitudes toward the COVID-19 pandemic and its effect on their personal life, financial status, and the quality of dental services for patients.

Results

Overall, 240 dentists contributed to this study (214 general dentists and 26 specialists). The majority of the participants (n = 170, 70%) did not perform non-emergency procedures during the pandemic. The dental practitioners have suggested several strategies to decrease the risk of contagion, such as reducing treatment sessions (n = 90, 37%), strict triage of patients (n = 156, 64%), and using personal protective equipment (n = 108, 45%). However, most of the dentists (n = 210, 87%) had problems, providing personal protective equipment during the pandemic. Moreover, 97% (n = 234) of the participants reported that they encountered a decrease in their financial income since the eruption of the pandemic.

Conclusion

Dental health care workers are at the highest risk of contracting COVID-19. Thus, dental practitioners ought to execute the standard protocols more cautiously during the pandemic. They could also lower their work hours and limit dental procedures to emergency treatments to reduce the risk of COVID-19 transmission. Besides, the public organizations should provide proper equipment for the dental practitioners to decrease the risk of contagion.

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Background

In December 2019, an outbreak of a novel beta coronavirus disease 2019 (COVID-19) began in Wuhan, China's Hubei province [1]. By now, the virus has spread all around the world and disrupted all aspects of human life. The symptoms of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are similar to the previously known coronavirus infections. These include fever, dry cough, fatigue; however, the SARS-CoV-2 has a higher spreading nature [2]. The virus could spread via respiratory droplets and contaminated surfaces, through the mucous membrane of the mouth, eyes, and nose, and even via the fecal–oral route [3, 4]. This highly contagious nature of the virus has made many medical institutions to cancel all elective procedures to reduce the risk of contagion.

The use of handpieces and ultrasonic instruments during dental procedures unavoidably results in the generation of blood and saliva droplets [5]. Consequently, these droplets could contaminate the dental instruments and the office environment. Hence, both dental practitioners and patients could be at risk of being infected with microbial pathogens [6, 7]. In this regard, researchers mentioned that dental clinics might be a possible transmission source of viruses such as human immunodeficiency virus (HIV) and hepatitis B virus (HBV); these viruses could transmit during dental practice to the patients and also the practitioners [8, 9].

The highly contagious nature of the SARS-CoV2, and the fact that dental procedures commonly generate blood and saliva droplets resulting in the spread of the virus ensued the American Dental Association (ADA) to suggest dental practitioners limit their interventions to emergency treatments [10]. Moreover, strict precautionary protocols must be performed during the pandemic to reduce the risk of infection. For instance, the dentists and their assistants should regularly provide pre-procedural mouth rinse for the patients, and frequently disinfect the dental instruments [11]. Additionally, to reduce the risk of transmission high volume saliva ejectors, anti-retraction handpieces, the rubber dam isolation, and personal protective equipment (PPE) should be used [11, 12].

The closure of dental clinics because of the COVID-19 pandemic has disrupted dental services to the patients. Moreover, the Irish Dental Association mentioned that about 75% of dental practitioners are expecting a financial loss of over 70% during the outbreak [13]. Besides, it has been mentioned that dental practitioners could be infected with the SARS-CoV-2 virus, unnoticeably, and become carriers of the virus [14]. As a result, the dental services were limited to the emergency and urgent cases during the early days of the pandemic [15]. In the present study, we aimed to evaluate the impact of the COVID-19 pandemic on dental practice in Iran by conducting an online questionnaire among dentists and finding their perspectives on the subject.

Methods

Study design and population

This report is based on a questionnaire conducted from June 10 to 25, 2020, among Iranian dentists. The total number of dentists in Iran was estimated to be 20,000, that work in public, private, and nonprofit organizations [16]. We conducted the chain-referral sampling method as most of the participants were hard to find. Our study population consists of specialists and general dentists who work in Iran regardless of their city and workplace. We asked the dentists to participate in the study via the internet (e-mail or social media) and asked them to distribute the survey among the other colleagues at their convenience. The study protocol was approved by the Medical Ethics Committee of Shiraz University of Medical Sciences. The participants have voluntarily involved in this study and written informed consent was obtained. They were assured that no personal information is required, and their filled data would be kept confidential. An online questionnaire using Google Forms was used to collect the data.

Questionnaire

The preliminary draft of the questionnaire was designed for the present study based on experts’ opinions (5 attending dentists, Dental School, Shiraz University of Medical Sciences) and guidance from relevant literature [17, 18]. The experts above and a skilled statistician evaluated the face and content validity of the questionnaire. The content of the survey was also verified in terms of the topic concepts. Therefore, the biased, confusing, guiding, and double questions were omitted. We pilot tested the questionnaire on a sample of 20 dentists.

The survey includes 51 questions and four sections (Additional file 1) in Persian. The first section included primary demographic data. The second part consisted of closed questions (yes/no questions) about the dentists’ opinion on the COVID-19 pandemic and its effect on their personal life, financial status, and the quality of dental services for patients. The third section consists of multiple-choice questions about the dentists’ perspectives on the pandemic. The last part of the survey is based on the 5-point Likert-scale scoring to evaluate dentists' attitudes and views on the outbreak.

Data gathering and statistical analysis

A trained person who was unaware of the names and degrees of the participants has gathered the results. Microsoft Excel sheets have been used to create tables and graphs. Two members of the research group reviewed the extracted data for accuracy. Items in the investigation were described by descriptive statistical analysis. Also, the Chi-square test was used to find any significant association between the parameters, and P value < 0.05 was considered as statistically significant. The calculation was performed using Statistical Package for the Social Sciences (SPSS) version 22.0 software.

Results

Overall, 240 dentists were filled the questionnaire (214 general dentists and 26 specialists). More than half of the participants (n = 150, 62%) were between 24 to 35 years with a job experience of fewer than ten years. Among all the participants, 114 (47%) were male, 126 (52%) were female, 108 (45%) were married, and 132 (55%) were single. Moreover, 71% of the married participants had a child or more children (Table 1).

Table 1 The demographic data of dentists (N=240)
Full size table

Our results showed that 18 (7%) of the participants have observed the symptoms of the COVID-19 in themselves, and 3 (1%) had the disease. Besides, 9 (3%) of the participants reported that their assistants had the symptoms. Since the COVID-19 outbreak, almost one-third (n = 93, 38%) of the participants have observed an increase in their phone calls from patients for their dental problems (Table 2).

Table 2 The COVID-19 symptoms in dental clinics, and a rise in demand for remote consultation (N=240)
Full size table

More than half of the participants (n = 156, 64%) believed that the triage of patients should be done regarding the COVID-19 symptoms. Besides, 141 (58%) of the participants believed that the reopening of the dental clinics might increase COVID-19 incidence. Among all dentists, more than half of them (n = 162, 66%) believed that dental practice standards would reform because of the pandemic (Table 3).

Table 3 Dentists’ viewpoints regarding the effects of COVID-19 on dental practice (N=240)
Full size table

The majority of the participants (n = 170, 70%) did not perform non-emergency procedures during the pandemic, and 228 (95%) of them had changed their work hours. The contributors have had different concepts regarding the changes that are needed to be made in dental practice standards; as 207 (86%) focus on preventive care, not perform unnecessary treatments and reduce the treatment sessions at the lowest possible, in the future (Table 4).

Table 4 Dentists reconciled their practice to the pandemic (N=240)
Full size table

Additionally, 111 (46%) of the participants said that they had canceled all dental procedures temporarily, since the outbreak. Furthermore, almost half of the contributors (n = 117, 48%) believed that dental clinics should be closed until the end of the pandemic (Table 5). No significant association was found between the dentists’ job experience and their attitude regarding the closure of the dental clinics (P value > 0.05).

Table 5 Dentists’ experiences during the pandemic (N=240)
Full size table

Finding and providing PPE was a problem for most of the dentists (n = 210, 87%), during the outbreak. About all of the participants reported that they had to buy PPE with a considerably higher price (n = 234, 98%) (Table 6). We did not find any significant association between the consumption of PPE and dentists’ job experience (P value > 0.05).

Table 6 Dentists have encountered several problems because of the pandemic (N=240)
Full size table

Most of the participants (n = 234, 97%) reported that they encountered a decrease in their financial income since the eruption of the pandemic, while only 6 (2%) of them received financial help from public organizations. More than one-third of them (n = 90, 37%) needed another source of income for daily expenditure. No significant association was found between the decrease in financial income and dentists’ job experience or marital status (P value > 0.05).

Discussion

The results of our study showed that about 7% of Iranian dentists had experienced the symptoms of COVID-19, and nearly 1% of them had a positive COVID-19 test. Besides, the workers in dental clinics are also at considerable risk of contagion, as our investigation showed that 3% of the contributors’ assistants had the symptoms mentioned above. This indicates that dental practice should be done even with more infection control cautionary, and the non-emergency treatments should be delayed until the end of the pandemic [19].

The nosocomial transmission of SARS-CoV-2 has been a concern for dental practitioners, as it could put both patients and dentists at the risk of contagion [20]. As previous studies also mentioned that dental practitioners are at higher risk of being infected by SARS-CoV-2 [21–23].

The majority of the participants of the present study reported a tremendous increase in the demand for remote dental consultations. However, they did not consider remote consultation as an effective way of delivering dental services. We believe these results could be because of the characteristics of dental procedures and the lack of appropriate infrastructure. Future studies must be conducted to hypothesize and design advanced technologies that can virtually deliver dental services [24].

Occupational Safety and Health Administration has mentioned that using remote dental consultations should be considered for the non-emergent cases during the pandemic [25]. Additionally, before the current pandemic, remote consultation was found to have sufficient quality for oral treatments [26]. The telehealth-based delivery of dental services seems to be an attractive and flexible concept, especially during these unprecedented times [27]. Despite this, most clinics do not have the proper equipment such as network infrastructures and adequately trained staff to provide telehealth services [23].

A significant number of the participants mentioned that they do not perform any non-emergency procedures, and they have lowered their work hours to minimize the spread of the virus. They also declared that they follow and implement the latest national and international COVID-19 guidelines for dental practice. However, more than half of them believed that the standards in that regard must be reformed by the local authorities. We believe that comprehensive worldwide instruction must be provided for dental settings to minimize the risk of infection, effectively.

In response to the current pandemic, several organizations such as the Centers for Disease Control and Prevention (CDC), ADA, British Dental Association, and National Health Service have designed and developed response groups, and guidance for dental settings [10, 28, 29]. These instructions emphasized on closely examining the patients considering the clinical symptoms and epidemiological history [23]. In the early days of the pandemic, the guidelines also recommended that dental care procedures should be done for urgent and emergency diagnosis while providing appropriate PPE and patient care supplies [4].

In our study, several suggestions have been made to decrease the risk of infection such as reducing the treatment sessions, emphasis on preventive care, triaging patients for the related symptoms, conducting COVID-19 tests for the referred patients, and proper use of PPE. Some participants believed that the reopening of the dental clinics for non-emergency cases might increase COVID-19 incidence, and the offices should be closed until the end of the pandemic.

The public organizations suggested that the general population should increase their oral hygiene and implement preventive care to reduce the need for dental procedures, during the pandemic [23]. As most of the dental clinics only provide low-risk procedures such as tooth extraction, which could increase the demand for removable prosthetic treatments in the future [30]. However, as the pandemic continued, it has been proposed that dental settings can deliver non-emergency treatments as well. A survey led by the ADA Health Policy Institute demonstrated that over 90% of dental clinics are now open for elective care services [31]. CDC has also designed a standard for health-care systems and health-care workers for the delivery of non-emergent services to minimize the risk of contagion [32].

Effective use of PPE, including, gowns, gloves, face shields, goggles, and face masks, is an essential regulation for preventing the spread of the virus to and from health-care providers and patients [33, 34]. While the rapid enhance of demand for PPE resulted in the shortage of these supplies all around the world [35]. The majority of the participants of the present study have asserted that the consumption of PPE had been significantly raised, and more than half of them had trouble finding facemask since the COVID-19 outbreak. Furthermore, they reported that the price of PPE had been significantly raised, which could be a sign of shortage. This increasing price of PPE might also lead to the rise of dental treatment costs [23]. Although, public organizations did not help the participants to provide this equipment.

A significant number of the participants had financial problems caused by their lowered work hours and restricted dental procedures. Consistently, a study revealed that the COVID-19 pandemic imposed financial distress on dental offices [36]. More than half of the Iranian dentists have been expending their saves for daily expenditure. Still, a small number of them have received financial help from public organizations. These results indicate that the related organizations must increase their efforts to fund the dentists and their assistants during these unprecedented times. Should not providing the support funds for the dental care workers, by persisting the COVID-19 pandemic, the number of workers that encounter financial problems will increase [23].

Our study also showed that about half of the participants had symptoms of depression and anxiety. It has been noted that the health-care workers are encountering far more emotional stress compare with the general population, during the COVID-19 pandemic [37, 38]. Increased workload, working with repeatedly changing protocols, using PPE, social-distancing, self-isolation, and caring for deteriorating patients are found to be the main concerns among the medical staff during the pandemics [39, 40]. Moreover, difficult decisions should be made by the workers during the pandemics as the resources are limited [41]. The dentists who participated in the present study also mentioned that they need to consult with a psychiatrist or a therapist.

Our study has some limitations. One of the most important weaknesses of our study is the sampling method. Although chain-referral sampling is an easy and quick method to find participants, people may refuse to participate in the study after the invitation. Furthermore, participants may recommend a dentist whom they know with a similar age range. Our investigation is a descriptive study that focuses on descriptive analysis of the situation and objects; therefore, it was unable to test or verify the causal relationship. Another weakness of our study is that we had a limited time frame to conduct the questionnaires to be more up to date.

Conclusion

Most of the Iranian dentists have followed the latest COVID-19 guidelines. Besides, they preferred to lower their work hours and limit dental procedures to emergency treatments until the end of the pandemic. They also believed that the full reopening of the dental clinics might lead to an increase in the COVID-19 transmission. Moreover, the dentists encountered financial problems because of the closure of dental clinics. Besides, depression and anxiety were common symptoms among dentists during these times. We believe that the public organizations must intervene to financially and psychologically support the dentists during these unprecedented times. Researchers must also take reasonable steps to evaluate the impacts of COVID-19 on dental practice to find solutions that can be used during the current and future pandemics.

Availability of data and materials

The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

Abbreviations

ADA:

American Dental Association

CDC:

Centers for Disease Control and Prevention

COVID-19:

Coronavirus disease 2019

HBV:

Hepatitis B virus

HIV:

Human immunodeficiency virus

PPE:

Personal protective equipment

SARS-CoV-2:

Severe acute respiratory syndrome coronavirus 2

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Acknowledgements

The authors want to thank SIMR Co. and Medipress™ for the scientific editing of the paper.

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Authors and Affiliations

  1. Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran

    Hanie Ahmadi & Alireza Ebrahimi

  2. Department of Oral and Maxillofacial Surgery, Shiraz University of Medical Sciences, Shiraz, Iran

    Farhad Ghorbani

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Contributions

HA: Conceptualization, Methodology, Software, Validation, Formal analysis; AE: Data Curation, Visualization, Writing- Reviewing and Editing, Supervision; FG: Investigation, Supervision, Project administration. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Farhad Ghorbani.

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Ethics approval and consent to participate

The study protocol was approved by the Medical Ethics Committee of Shiraz University of Medical Sciences. The participants have voluntarily involved in this study and written informed consent was obtained. They were assured that no personal information is required, and their filled data would be kept confidential.

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All authors have approved the paper and agree to its submission and publishing in this journal.

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Supplementary information

Additional file 1.

The questionnaire that was used to evaluate the impacts of COVID-19 on dental practice in Iran.

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Ahmadi, H., Ebrahimi, A. & Ghorbani, F. The impact of COVID-19 pandemic on dental practice in Iran: a questionnaire-based report. BMC Oral Health 20, 354 (2020). https://doi.org/10.1186/s12903-020-01341-x

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