|Year : 2020 | Volume
| Issue : 2 | Page : 55-66
Endodontic and dental practice during COVID-19 pandemic: Position statement from the Indian Endodontic Society, Indian Dental Association, and International Federation of Endodontic Associations
Jogikalmat Krithikadatta1, Ruchika Roongta Nawal2, Kurinji Amalavathy3, William McLean4, Velayutham Gopikrishna5
1 Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Meenakshi Academy of Higher Education and Research, Chennai, Tamil Nadu, India
2 Department of Conservative Dentistry and Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India
3 Department of Conservative Dentistry and Endodontics, Sathyabama Dental College and Hospital, Chennai, Tamil Nadu, India
4 Glasgow Dental School, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
5 Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Sri Ramachandra University, Chennai, Tamil Nadu, India
|Date of Submission||30-Apr-2020|
|Date of Acceptance||16-May-2020|
|Date of Web Publication||18-Jun-2020|
Faculty of Dentistry, Sri Ramachandra Institute of Higher Education & Research University, Chennai, Tamil Nadu
Source of Support: None, Conflict of Interest: None
The emergence of COVID-19 pandemic poses an immense global health challenge. As dental care providers, we are faced with significant responsibilities both to the dental team and our patients to limit exposure to the virus. Due to the nature of our work, the team are at a high risk of contracting the virus and potentially transmitting the virus. One of the prime modes of containing this pandemic is in enforcing effective social distancing. However, as dental care providers, we face the twin challenge of protecting ourselves and our patients from community transmission and at the same time ensuring patients continue to have access to urgent/emergency dental care. This position statement is for the benefit of endodontists and dentists and provides an objective method of streamlining their dental practices based on need and evidence-based disease containment protocols.
Keywords: Aerosol, coronavirus, COVID-19, dentistry, disease transmission, endodontics, nosocomial, SARS-CoV-2, virus
|How to cite this article:|
Krithikadatta J, Nawal RR, Amalavathy K, McLean W, Gopikrishna V. Endodontic and dental practice during COVID-19 pandemic: Position statement from the Indian Endodontic Society, Indian Dental Association, and International Federation of Endodontic Associations. Endodontology 2020;32:55-66
|How to cite this URL:|
Krithikadatta J, Nawal RR, Amalavathy K, McLean W, Gopikrishna V. Endodontic and dental practice during COVID-19 pandemic: Position statement from the Indian Endodontic Society, Indian Dental Association, and International Federation of Endodontic Associations. Endodontology [serial online] 2020 [cited 2021 Apr 20];32:55-66. Available from: https://www.endodontologyonweb.org/text.asp?2020/32/2/55/287070
| Introduction|| |
Coronaviruses (CoVs) are enveloped single-stranded RNA viruses that are zoonotic in nature and cause symptoms ranging from those similar to the common cold to more severe respiratory, enteric, hepatic, and neurological symptoms. Other than severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2), there are six known CoVs in humans: HCoV-229E, HCoV-OC43, SARS-CoV, HCoVNL63, HCoV-HKU1, and Middle East respiratory syndrome (MERS)-CoV. CoVs have caused two large-scale pandemics in the last two decades: SARS and MERS.
On December 29, 2019, the first four cases of an acute respiratory syndrome of unknown etiology were reported in Wuhan City, Hubei Province, China. It appears that most of the early cases had some sort of contact history with a seafood market. Soon afterward, a secondary route of transmission was found to be via human-to-human close contact. The World Health Organization (WHO) announced the official name of the 2019 novel CoV as coronavirus disease 2019 (COVID-19). The current reference name for the virus is SARS-CoV-2. The disease was recognized as a pandemic on March 11, 2020, with global spread affecting 3,252,000 individuals with 229,457 deaths at the time of writing. Most of the evidence for understanding the disease process comes from the epidemiological findings from China, Korea, Italy, USA, the United Kingdom, and India. The information from these countries has helped researchers model and draw inference for the rest of the world.
The nature of the dental setting puts both the dentist/dental team and the patient at a high risk of cross-infection. The COVID-19 pandemic has led to the absolute requirement for strict and effective infection control protocols beyond those that already exist within the dental setting. The purpose of this position statement is to establish a standard operating protocol (SOP) for endodontic and dental practice in the current climate. This document presents the essential knowledge about COVID-19 and nosocomial infection in dental settings along with recommended management protocols for institution-based and private clinical practices.
| Routes of Transmission|| |
The three most common transmission routes  of novel CoV include:
- Direct transmission (through cough, sneeze, or droplet inhalation)
- Contact transmission (through oro-nasal-ocular route) and
- Aerosol transmission.
Asymptomatic carriers of the infection are equally capable of transmitting the virus as symptomatic patients. The SARS-CoV-2 virus can be detected in aerosols up to 3 h postoperatively, and can persist on surfaces for extended periods. The nature of the surface alters the persistence of the virus. On copper surfaces, the virus can persist for up to 4 h, on cardboard up to 24 h, and on plastic and stainless steel up to 2–3 days. The droplet and aerosol transmission of SARS-CoV-2 is the most important concern in dental clinics and hospitals  because it is hard to avoid the generation of large amounts of aerosol and droplet mixed with patient's saliva and even blood during dental procedures.
| Symptoms of Covid-19 and Related Comorbidities|| |
A systematic review and meta-analysis of 19 studies and 36 case reports concluded that for 656 patients, the most prevalent symptoms include fever (88.7%), cough (57.6%), and dyspnea (45.6%). Among these patients, 20.3% required admittance to an intensive care unit, 32.8% presented with acute respiratory distress syndrome, and 6.2% with shock. Some 13.9% of hospitalized patients had fatal outcomes. The presence of comorbidities such as hypertension, diabetes, cardiovascular diseases, and respiratory system disease is identified as a major risk factor. The mean incubation period of COVID-19 is around 6.4 days, but can range from 0 to 24 days. Males were generally affected more (60%), and the patients had a discharge rate of 42% and a fatality rate of 7%.
| Disease Progress and Containment|| |
A study from China's Centers for Disease Control (CDC) showed that the majority of patients (80.9%) were considered asymptomatic or had mild pneumonia but released large amounts of viruses during the early phase of infection, which poses enormous challenges for containing the spread of COVID-19. Asymptomatic carriers calculated based upon the data from the Diamond Princess cruise ship constituted as high as 17.9%. The basic reproductive number (R0) denotes the number of people who can contract the disease from a contagious person. The R0 of COVID-19 ranges from 2.6 to 4.7. Importantly, this is higher than that of SARS or MERS.
Social distancing has been encouraged/expected by many nations as a primary strategy to reduce the rate of infection spread and to “flatten the curve” of numbers of those infected over a period of time. Along with social distancing, other measures taken to limit the doubling time and rate of infection are constantly updated by the CDC, USA. This minimizes the potential for people to contract the disease from a contagious person. For example, a recent report based on available data projected the death of 260,000 individuals in the UK with the absence of social distancing. In fact, this model not only advocates social distancing but also recommends self-isolation for individuals 70 years of age and above. The Indian government has imposed restrictions on public gatherings beyond fifty and also recommends self-isolation of the elderly population.
With vaccines and effective drugs still under trial, the Imperial College London has outlined several public health measures to slow down the disease progress, as follows:
- Home isolation of cases – Whereby those with symptoms of the disease (cough and/or fever) remain at home for 7 days following the onset of symptom
- Home quarantine – This involves all household members of the individual (s) with symptoms of the disease remain at home for 14 days following the onset of symptoms
- Social distancing– This is a broader policy that aims to lower the overall contacts that one makes with other people by three-fourths. This involves contacts made outside the household, school, or workplace
- Social distancing of those over 70 years – Since this age group falls in the highest risk of severe disease
- Closure of schools and universities.
However, social distancing creates significant challenges for the provision of dental services. Dental practitioners, in particular endodontists, are health-care providers with a major role in the management of dental emergencies including symptomatic pulpitis, acute dental infections, and dental traumatic injuries. Hence, complete closure of clinical practice/dental institutions is not recommended. Dentists also can participate in health education services by extending the information on preventive measures issued by their respective national and refer suspected COVID-19 patients to government-authorized institutions.,
| Providing Dental Care during Coronavirus Disease 2019 Pandemic: Challenges|| |
- Dental care settings invariably carry the risk of SARS-CoV-2 infection due to the nature of procedures performed. The virus can be transmitted in dental settings through inhalation of airborne viral particles that can remain suspended in the air for long periods. Direct contact with blood, oral fluids, or other patient materials presents a risk. Contact of conjunctival, nasal, or oral mucosa with droplets and aerosols containing virus particles generated from an infected individual can lead to infection. These can be propelled a short distance by coughing and talking without a mask, and indirect contact with contaminated instruments and/or environmental surfaces
- Droplet and aerosol transmission of SARS-CoV-2 is the most important concern in dental clinics and hospitals. Most dental procedures involve the use of high-speed air rotors with water cooling, which generate large amounts of aerosol and droplet mixed with patient's saliva and even blood during dental practice. The aerosols are small enough to stay airborne for an extended period before they settle on environmental surfaces or enter the respiratory tract. Thus, SARS-CoV-2 has the potential to spread through droplets and aerosols from the infected individuals in dental clinics and hospitals
- The asymptomatic incubation period for individuals infected with SARS-CoV-2 is variable but can be protracted. It has been confirmed that those without symptoms can still spread the virus. This makes it extremely difficult to identify those individuals that pose a risk. Owing to the contagious nature of the disease, while we take a history and carry out an examination of the patient and assess for urgency of dental need, an asymptomatic patient could have acted as a potent source of infection for others
- Risk of nosocomial infection: Because the health-care workers themselves fall in the high-risk group for infection, exposure to them and to the health-care settings is best avoided or postponed to control community spread. As per an earlier report in the early stage of the epidemic, on an analysis of hospitalized patients with SARS-CoV-2, 41% were presumed to have been infected in hospital, including 29% of health-care workers and 12% of patients.
| Providing Dental Care during the Coronavirus Disease 2019 Pandemic: Recommendations|| |
As health-care professionals, it is our duty to mitigate the community spread of this disease through responsible and informed actions. We need to fulfill our professional duty toward our patients, while keeping ourselves, our staff, and environment safe. The Indian Endodontic Society (IES), the International Federation of Endodontic Associations (IFEA), and the Indian Dental Association recognize and recommend the need for immediate postponement of all elective dental procedures while keeping emergency services operational. Concentration on emergency care will take care of immediate patient needs for true dental emergencies while also reducing the load of such emergencies on hospital emergency departments. The situation in hand is fluid and not time limited, but may persist for some time and will require close monitoring. The governing bodies and local governments are continuously providing timely updates regarding the situation, which needs to be closely monitored.
In this position statement, we intend to answer the following questions for the practicing dentist:
- Specific recommendations for dentists to triage patients to decide, what is a dental emergency, and when and how to schedule such patients
- Recommendations regarding a workflow and steps to be followed in a dental setting to reduce exposure while keeping the services functional for emergency care
- Recommendations for infection prevention and control in a dental clinic
- Specific dental procedure-related recommendations.
Specific recommendations for dentists to triage patients to decide, what is a dental emergency, and when and how to schedule such patients
Emergency severity assessment
An objective triaging tool has been suggested to facilitate the scheduling of the patients based on the level of need. This is based on the adaption of recommendations given by the American Dental Association on March 18, 2020. The operating question in this situation may be “How long can each patient safely wait?”
The purpose of this triage is to limit incoming patients and to identify those who cannot wait to be seen. It also will help in prioritizing the scheduling of patients as and when we restore normal functioning in our dental setups. This may be preferably done by trained staff or dentists themselves through audio or video communication channels. The following triages the patients into three categories [Table 1] and [Table 2]:
|Table 2: Recommended medications for emergency care patients reporting with severe dental pain during COVID-19 pandemic|
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- Emergency care
- Urgent care
- Scheduled care/elective care.
Section 2. Recommendations regarding a work flow and steps to be followed in a dental setting to reduce exposure while keeping the services functional for emergency care
Certain specific measures are discussed here regarding the general work flow for dental patient management during this period.
2.1. Patient triaging and tele-screening
To minimize the risk of exposure and community spread, it is critical to reduce physical walk-ins in the dental setting. This can be done effectively by tele-screening and triaging by phone. Triaging is the process of determining the priority of patients' treatment needs based on the severity of their condition. In telephone triage, decision makers must effectively assess the patient's symptoms and provide directives based on the urgency. This should be done in a timely fashion while meeting standard guidelines in order to prevent symptoms from worsening.
The front-desk staff members should be trained to triage callers based on their emergency severity assessment of the dental condition and the exposure risk categories related to COVID-19. Effective triaging of the emergency calls will enable the practice to apply social distancing within the practice and plan the treatment of dental emergency or urgent care more effectively. Before physically appointing a patient or attending to a walk-in patient in the dental setting, it is necessary to ascertain the following:
Exposure risk categories: Low/high based on a detailed medical history and COVID-19 questionnaire [Annexure 1].
The main factors that may give vital insight into COVID-19 risk are [Table 3]:
- Stage of disease spread in a particular geographic location/state/country
- History of exposure to potentially infected persons or places (through travel) – positive COVID-19 suspect
- Any respiratory illness symptoms (fever, coughing, and difficulty in breathing).
High-risk patients should be directed toward the local authorities for assessment and management. For the purpose of the dental setting, as a rule of thumb, all patients should be considered as potential asymptomatic carriers, if not already a known case of COVID-19. Dentists can track COVID-19 spread by accessing their respective Ministry of Health and Family Welfare website.
Emergency severity assessment of the associated dental condition (discussed in emergency severity assessment section): only patients which fall under emergency/urgent care should be attended to or scheduled immediately for management. While others may be tele-counseled, put under pharmacological management if needed [Table 2], and kept on a telephonic follow-up for any exacerbation of symptoms.
For physical walk-ins
Direct walk-ins in the clinics should be greatly discouraged other than life-threatening dental conditions. Educating and informing the patients before-hand using digital and mobile applications and messages and setting up of tele-consultation avenues may prove to be effective tools for the same.
Dental clinics are recommended to establish precheck triages to measure and record the temperature of every patient as a routine procedure (this should also be carried out for all dental team members). As outlined above, all patients on arrival should be questioned and a detailed medical history form should be completed to identify patients at high risk from infection. A COVID-19-related questionnaire should be completed to identify potential asymptomatic carriers and those that are infected. Only emergency cases should be attended to, whereas others should be counseled and appointed for a later date and may be kept on a telephonic follow-up if needed.
| Recommendations for Infection Prevention and Control|| |
As outlined previously, the triaging of patients is an essential step in reducing the risks of COVID-19 transmission through reduction in the number of patients attending and identification of symptomatic carriers.
Once a patient has access to the dental setting due to an identified urgent/emergency treatment need, the dental team can further limit the potential impact of a dental visit. The patient if possible can be encouraged to avoid public transport or travel alone. Upon arrival at the dental setup, facilities should be made available for patients to wash or disinfect their hands [Box 1]. Efforts should be made to minimize the number of patients in the dental setting at any one time. Patients should be seen promptly to limit waiting times. If possible, patients should not wait in waiting rooms.
As outlined previously, droplet and aerosol transmission is a significant risk in the dental practice setting. Due to the potential risk of asymptomatic COVID-19 patients presenting in the dental setting, appropriate measures to limit risk should be taken. Personal protective equipment (PPE) in line with guidance should be used (see use of personal protection protective equipment section). Generally, certain endodontic emergencies that necessitate the use of high-speed handpiece to gain access to the root canal system should be performed under dental dam and high-volume aspiration., However, all aerosol-generating procedures (AGPs) should be avoided.
If AGPs are undertaken, the operators should wear appropriate PPE ideally comprised of a fluid-resistant mask, a visor, and an apron. It is important to remember to put on and remove PPE in an order that minimizes the risk of contamination.
Even when not using AGPs, it is important that robust infection control measures are employed. In nonclinical areas such as reception and waiting areas, thorough cleaning should take place. Ideally, all nonessential items should be removed from these areas and surfaces free of clutter (section 4.5).
The WHO guidelines on hand hygiene in healthcare (2009) suggest that hand hygiene is the single most important measure for the prevention of infection.
- Hand washing with soap and water is preferred when hands are visibly dirty or soiled with blood or other body fluids or after using the toilet.
- Use alcohol-based hand rubs (ABHR) when hands are not visibly soiled or tap and running water is not available
Hand hygiene must be performed:
- Before patient examination
- Before dental procedures
- If gloves are torn or compromised during the procedure
- After removing gloves
- After touching the patient
- After touching surroundings or equipment that are not disinfected
- Dental professionals should avoid touching their own eyes, mouth, and nose.
Use of personal protective equipment
The use of PPE, including protective eyewear, masks, gloves, caps, face shields, and protective outerwear, is strongly recommended for all health-care providers in the clinic/hospital settings during the COVID-19 pandemic. All PPE that are intended for use for dental treatment are aimed to adequately protect the dentist, his/her staff, and the patient when providing care. At the same time, PPE usage needs to be optimized, to ensure their availability and to keep the treatment costs in check. Keeping the above two criteria in mind, these guidelines aim to provide optimization strategies for rationale use of PPE, depending on the type of personnel, kind of activity involved, and hence the risk of exposure [Table 4] and [Table 5].,,,,,
|Table 4: Personal protective equipment requirement at different levels of employee setting in a dental office|
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The donning and doffing of PPE is an essential step to ensure the prevention of infection and cross-contamination [Table 5].
Environmental disinfection of dental clinic
Air flow circulation
The air flow must be planned in a way to facilitate clearing of the contaminated aerosol within the dental operatory with adequate provision of ventilation [Figure 1]., It is generally recommended to:
- Avoid air conditioning without high-efficiency particulate air filters
- Use natural ventilation when available
- Introduce additional positive air flow (e.g. pedestal or tabletop fans) from less contaminated to more contaminated zone
- Place exhaust fans to evacuate the contaminated air to the external environment.
The dental practice should have a SOP for handling patients during this pandemic with enhanced focus on the sterilization and disinfection protocols, as highlighted in [Table 6].
|Table 6: Recommended disinfection and sterilization protocols for dental clinics treating patients during COVID-19 pandemic|
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| Recommendations for Specific Dental Procedure|| |
In this section, there are specific recommendations for dental emergency procedures, with a focus on the management of symptomatic irreversible pulpitis [Table 7]. With many countries under lockdown measures to contain the spread of COVID-19, the blanket instruction is to avoid all aerosol-related procedures in dental clinics. If possible, these patients must be managed with nonaerosol procedures or refer to medical facility equipped with negative-pressure operatories.
Following nonaerosol procedures, the steps to disinfect and sterilize, specific to COVID-19 pandemic, are summarized in [Table 6]. Also included is a decision-making checklist [Table 7] that will enable the dentist to decide if he or she could handle patients in his/her dental clinic.
In order to summarize the document, we recommend the clinical decision-making flowchart [Figure 2], to make a judgment call on a case-to-case basis.
|Figure 2: Clinical decision-making flowchart for assessing dental emergency and treatment recommendations during COVID-19 pandemic|
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| Conclusion|| |
Unprecedented challenges necessitate unprecedented solutions. As dental health-care providers, our primary goal is to serve our patients during their times of need. However, the current pandemic makes dentistry a potent channel of community transmission of disease. Hence, the current reality requires revised policy guidelines that provide clarity on the extent of dental services that can be provided by us safely. This joint position statement from the IES, IFEA, and IDA is an attempt to provide a logical and effective clinical decision-making process that enables us to effectively screen, protect, and serve our patients.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
| Annexure|| |
Screening/Disclosure Form for Dental Patients During Covid-19 Epidemic (Developed by the Indian Endodontic Society)
Name of patient: ..................... Age/Sex: .................... Mobile Number:..............
Residential Address (Proof to be verified):
The above information given by me is true to the best of my knowledge. I fully understand and acknowledge that withholding or misrepresentation of any information is highly unethical and against the interest of larger population during this pandemic.
I have been made aware that dental procedures create ultra-fine water spray that may transmit the COVID-19 virus. I understand the COVID-19 virus has a long incubation period during which carriers of the virus may not show symptoms and still be highly contagious. I also understand that, due to the contagious nature of the disease and characteristics of dental procedures, I have an increased risk of contracting the virus simply by being in a dental office in spite of the best disinfection protocols applied.
I fully understand and acknowledge that I may be an asymptomatic carrier of the disease and hence will strictly comply with all safety precautions and protocols advised. In the eventuality of my testing COVID positive at a later date, I will not hold the dental service provider/staff/dental setup responsible for it. I hereby knowingly and willingly give consent to have my emergency/urgent dental treatment completed during the COVID pandemic.
Signature of patient: Staff signature:
| References|| |
Zhu N, Zhang D, Wang W, Li X, Yang B, Song J, et al
. A novel coronavirus from patients with pneumonia in China, 2019. N
Engl J Med 2020;382:727-33.
Adhikari SP, Meng S, Wu YJ, Mao YP, Ye RX, Wang QZ, et al
. Epidemiology, causes, clinical manifestation and diagnosis, prevention and control of coronavirus disease (COVID-19) during the early outbreak period: A scoping review. Infect Dis Poverty 2020;9:29.
Lu CW, Liu XF, Jia ZF. 2019-nCoV transmission through the ocular surface must not be ignored. Lancet 2020;395:e39.
Backer JA, Klinkenberg D, Wallinga J. Incubation period of 2019 novel coronavirus (2019-nCoV) infections among travellers from Wuhan, China, 20-28 January 2020. Euro Surveill 2020;25:2000062.
van Doremalen N, Bushmaker T, Morris DH, Holbrook MG, Gamble A, Williamson BN, et al
. Aerosol and surface stability of SARS-CoV-2 as compared with SARS-CoV-1. N
Engl J Med 2020;382:1564-7.
Peng X, Xu X, Li Y, Cheng L, Zhou X, Ren B. Transmission routes of 2019-nCoV and controls in dental practice. Int J Oral Sci 2020;12:9.
Cleveland JL, Gray SK, Harte JA, Robison VA, Moorman AC, Gooch BF. Transmission of blood-borne pathogens in US dental health care settings: 2016 update. J Am Dent Assoc 2016;147:729-38.
Rodriguez-Morales AJ, Cardona-Ospina JA, Gutiérrez-Ocampo E, Villamizar-Peña R, Holguin-Rivera Y, Escalera-Antezana JP, et al
. Clinical, laboratory and imaging features of COVID-19: A systematic review and meta-analysis. Travel Med Infect Dis 2020;34:101623.
Yang J, Zheng Y, Gou X, Pu K, Chen Z, Guo Q, et al
. Prevalence of comorbidities in the novel Wuhan coronavirus (COVID-19) infection: A systematic review and meta-analysis. Int J Infect Dis 2020;94:91-5.
Li LQ, Huang T, Wang YQ, Wang ZP, Liang Y, Huang TB, et al
. COVID-19 patients' clinical characteristics, discharge rate, and fatality rate of meta-analysis. J Med Virol 2020;10.1002/jmv.25757.
Wang Y, Wang Y, Chen Y, Qin Q. Unique epidemiological and clinical features of the emerging 2019 novel coronavirus pneumonia (COVID-19) implicate special control measures. J Med Virol2020;10.1002/jmv.25748.
Mizumoto K, Kagaya K, Zarebski A, Chowell G. Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020. Euro Surveill 2020;25(10):2000180.
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.
Wheeler SQ, Greenberg ME, Mahlmeister L, Wolfe N. Safety of clinical and non-clinical decision makers in telephone triage: A narrative review. J Telemed Telecare 2015;21:305-22.
Smith EA, Marshall JG, Selph SS, Barker DR, Sedgley CM. Nonsteroidal anti-inflammatory drugs for managing postoperative endodontic pain in patients who present with preoperative pain: A systematic review and meta-analysis. J Endod 2017;43:7-15.
Sadeghein A, Shahidi N, Dehpour AR. A comparison of ketorolac tromethamine and acetaminophen codeine in the management of acute apical periodontitis. J Endod 1999;25:257-9.
Edwards JE, Loke YK, Moore RA, McQuay HJ. Single dose piroxicam for acute postoperative pain. Cochrane Database Syst Rev. 2000;2000(4):CD002762.
Nogueira BML, Silva LG, Mesquita CR, Menezes SA, Menezes TO, Faria AG, et al
. Is the use of dexamethasone effective in controlling pain associated with symptomatic irreversible pulpitis? A systematic review. J Endod 2018;44:703-10.
Agnihotry A, Thompson W, Fedorowicz Z, van Zuuren EJ, Sprakel J. Antibiotic use for irreversible pulpitis. Cochrane Database Syst Rev 2019;5:CD004969.
Chin AW, Chu JT, Perera MR, Hui KP, Yen HL, Chan MW, et al
. Stability of SARS-CoV-2 in different environmental conditions. Lancet Microbe 2020. [doi.org/10.1016/S2666-5247 (20) 30003-3].
Rutala WA, Weber DJ. The Healthcare Infection Control Practices Advisory Committee (HICPAC). Guideline for Disinfection and Sterilization in Healthcare Facilities; 2008. Available from: https://www.cdc.gov/infectioncontrol/guidelines/disinfection/index.html.[Last accessed on 2020 April 26].
Kampf G, Todt D, Pfaender S, Steinmann E. Persistence of coronaviruses on inanimate surfaces and their inactivation with biocidal agents. J Hosp Infect 2020;104:246-51.
Ceisel RJ, Osetek EM, Turner DW, Spear PG. Evaluating chemical inactivation of viral agents in handpiece splatter. J Am Dent Assoc 1995;126:197-202.
Brickner PW, Vincent RL, First M, Nardell E, Murray M, Kaufman W. The application of ultraviolet germicidal irradiation to control transmission of airborne disease: Bioterrorism countermeasure. Public Health Rep 2003;118:99-114.
Harrel SK, Molinari J. Aerosols and splatter in dentistry: A brief review of the literature and infection control implications. J Am Dent Assoc 2004;135:429-37.
Walker CM, Ko G. Effect of ultraviolet germicidal irradiation on viral aerosols. Environ Sci Technol 2007;41:5460-5.
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.
Samaranayake LP, Reid J, Evans D. The efficacy of rubber dam isolation in reducing atmospheric bacterial contamination. ASDC J Dent Child 1989;56:442-4.
Kohn WG, Collins AS, Cleveland JL, Harte JA, Eklund KJ, Malvitz DM. Centers for Disease Control and Prevention. Guidelines for Infection Control in Dental Health-Care Settings; 2003. Available from: https://www.cdc.gov/mmwr/preview/mmwrhtml/rr5217a1.htm.
[Last accessed on 2020 April 26].
Samaranayake LP, Peiris M. Severe acute respiratory syndrome and dentistry: A retrospective view. J Am Dent Assoc 2004;135:1292-302.
Eggers M, Koburger-Janssen T, Eickmann M, Zorn J.In vitro
bactericidal and virucidal efficacy of povidone-iodine gargle/mouthwash against respiratory and oral tract pathogens. Infect Dis Ther 2018;7:249-59.
Kariwa H, Fujii N, Takashima I. Inactivation of SARS coronavirus by means of povidone-iodine, physical conditions, and chemical reagents. Jpn J Vet Res 2004;52:105-12.
Kanaa MD, Whitworth JM, Corbett IP, Meechan JG. Articaine and lidocaine mandibular buccal infiltration anesthesia: A prospective randomized double-blind cross-over study. J Endod 2006;32:296-8.
Robertson D, Nusstein J, Reader A, Beck M, McCartney M. The anesthetic efficacy of articaine in buccal infiltration of mandibular posterior teeth. J Am Dent Assoc 2007;138:1104-12.
Haase A, Reader A, Nusstein J, Beck M, Drum M. Comparing anesthetic efficacy of articaine versus lidocaine as a supplemental buccal infiltration of the mandibular first molar after an inferior alveolar nerve block. J Am Dent Assoc 2008;139:1228-35.
Childers M, Reader A, Nist R. anesthetic efficacy of the periodontal ligament injection after an inferior alveolar nerve block. J Endod E 1996;22:317.
Malamed SF, Falkel M. Buffered local anaesthetics: The importance of pH and CO2. SAAD Dig 2013;29:9-17.
Eren B, Onay EO, Ungor M. Assessment of alternative emergency treatments for symptomatic irreversible pulpitis: A randomized clinical trial. Int Endod J 2018;51 Suppl 3:e227-37.
Guide to Infection Prevention for Outpatient Settings: Minimum Expectations for Safe Care. National Center for Emerging and Zoonotic Infectious Diseases Division of Healthcare Quality Promotion Version 2.3; 2016. Available from: https://www.cdc.gov/infectionc ontrol/pdf/outpatient/guide.pdf.
[Last accessed on 2020 April 26].
[Figure 1], [Figure 2]
[Table 1], [Table 2], [Table 3], [Table 4], [Table 5], [Table 6], [Table 7]