The Coronavirus Disease 2019 (COVID-19) Outbreak: Challenges for Pediatric Dentistry
The most recent Severe Acute Respiratory Syndrome has become a major global public health emergency, which the World Health Organization has identified as the novel coronavirus disease 2019 (COVID-19). Despite international attempts to prevent the virus from spreading, the epidemic has not yet been halted. Among healthcare workers, dentists seem to be at a higher risk of exposure to COVID-19. Given the type and form of procedures being performed in the oral cavity, pediatric dentistry poses a significant occupational risk. This review article discusses the risk of infection during dental procedures, patient precautions, and infection control measures implemented during dental care in hospitals, protective measures for dental practitioners, and emergency dental treatment during the COVID-19 pandemic. And provide a variety of treatment options for children who are at risk for COVID-19, as well as precautions that must be taken to avoid cross-infections while children undergo emergency treatments in dental offices.
Paediatric dentistry, Dental practice management, COVID-19, Dentist, Dental practice
The human body is exposed to a variety of infectious microorganisms, such as viruses, bacteria, fungi, protozoa, and helminths, which cause tissue damage through different mechanisms. Viruses are unique among these five types of infectious organisms in that they can manipulate the host-cell machinery in a unique way and continuously evolve to survive and prosper in all species .
By the end of 2019, Coronavirus disease 2019 (COVID-19) was the most recent infectious disease to rapidly develop worldwide . The World Health Organization (WHO) classified the 2019 novel coronavirus (2019-nCoV) as a beta-Coronavirus (β-CoV) of group 2B, belonging to the subfamily Orthocoronavirinae . The genetic attributes of the 2019-nCoV are nearly identical to those of the severe acute respiratory syndrome coronavirus 2 (SARSCoV- 2) and Middle East respiratory syndrome coronavirus (MERS-CoV), which originated from bats . COVID-19 has its etiologic agent (SARS-CoV-2): the 2019 coronavirus is different from SARS-CoV, but it has the same host receptor, human angiotensin-converting enzyme 2 (ACE2) .
The COVID-19 outbreak was discovered in Wuhan, China . In Wuhan City, wet animal markets are a source of live animals and were largely concerned in a high number of positive cases, pointing to the zoonotic origin of 2019- nCoV . The sudden appearance of an unidentified disease in wet animal markets characterized by several symptoms, including pneumonia, dry cough, fatigue, and occasional gastrointestinal symptoms . The initial outbreak was identified and involved approximately 66% of the workers there. The virus has since been transmitted rapidly from Wuhan city to most other cities, provinces, and countries throughout the world .
On January 30, 2020, the WHO declared a global public health emergency over the COVID-19 outbreak [5,6]. Efforts were made to identify the reservoir for transmission to humans, with preliminary evidence suggesting two species of snakes . However, a lack of concrete data identifying the coronavirus reservoir as something other than birds and mammals remains . The cause of the spread of COVID-19 infections has been identified as via person-to-person transmission [3,4]. The basis of this conclusion lies in the fact that many cases were identified within individuals who had never visited Wuhan's wet animal markets. Direct contact with an infected individual and the spread of infection via droplets, either by sneezing or coughing, are the two most important modes of person-to-person transmission .
Dental practitioners face significant difficulties as a result of the characteristics of spread infection in COVID-19 and the features of dental procedures. Cross contamination between dental practitioners and patients is a possibility due to the exposure of individuals to droplets and aerosols from saliva and other body fluids during dental procedures. Concerns about a similar route of transmission for COVID-19 in the dental setting have grown because of these routes of transmission . When dealing with children and teenagers, the situation worsens. According to recent research, the majority of children who contract the COVID-19 are asymptomatic and can play a significant role in transmission [8,9].
Given the above data, this review article discusses the risk of infection during dental procedures and provides a variety of treatment options for children who are at risk of COVID-19. This article also details the precautions that must be taken to avoid cross-infections while treating children in dental offices during an emergency.
Covid-19 and children
The case detection rate changes daily and can be tracked in almost real time . As of 22 March 2021, 22:25 hours (Central Standard Time), the number of confirmed cases in the world was 123 527 951 and the number of reported deaths was 2 719 828, with 69 977 363 recovered patients . There is a low prevalence of COVID-19 infections among children; however, the true numbers are likely to be under-reported .
Children, especially those between the ages of 12 and 14 years, appear to be affected less frequently than adults [12-20], as they have a lower risk of exposure and are tested less frequently than adults . Children account for up to 14% of laboratory-confirmed cases in different countries [22-29]. Most cases of COVID-19 in children include family contact, and a confirmed diagnosis of the infection [30,31]. Thus, children are just as likely as adults to become infected, but with fewer complications and a lower risk of severe illness. The phases include asymptomatic, mild, moderate, severe .
Impact of COVID-19 on dentists and pediatric dentists
The first case of a dentist testing positive for COVID-19 was on 23 January 2020 at the Department of Preventive Dentistry in the Wuhan University Dental Hospital. Eventually, disease transmission to eight other oral healthcare professionals was identified .
The dental clinic was not difference for a similar possibility of transmitting and acquiring the infection between staff or individuals; moreover, dental clinics could be riskier environments for disease spread due to the necessity for close contact with patients and the nature of dental treatments . Individuals working in dental practices are at an increased risk of infection due to the requirement for face-to-face communication, the handling of sharp instruments, and the exposure to saliva, blood, and other body fluids. Dental professionals also play an important role in preventing the transmission of 2019-nCoV .
As countries experienced the pandemic at different periods, it is difficult to analyze the true impact of the pandemic on pediatric dental practice . Due to this emergent outbreak and difficulties in screening patients for COVID-19, dentists do not know when they are encountering infected patients.
Seasonal flu is common among children, and with the changing weather, cold and cough have also become extremely prevalent. Notably, flu and colds present with overlapping symptoms of COVID-19, thus, complicating the diagnosis of COVID-19 . In general, children in pediatric dental offices are unable to describe their symptoms. Thus, during this time of crisis, many symptoms may overlap and correlate with other viral illnesses, creating diagnostic confusion. The inability to definitively diagnose COVID-19 infections from other illnesses thus creates a fear of exposure among pediatric dentists while performing treatments . Therefore, pediatric dentists are urged to remain up to date with recent international and local institutional guidelines. Any practice modifications should be evaluated using professional clinical judgment .
To control the spread of COVID-19, practical guidelines have been recommended for dentists and dental staff by the Centres for Disease Control and Prevention (CDC), the American Dental Association (ADA), the World Health Organization and the Ministry of Health of the Kingdom of Saudi Arabia [36-39]. Similar to the situation with other transmissible diseases, such recommendations include the use of personal protective equipment, routine hand washing, detailed patient evaluations, the use of rubber dam isolation, the use of high-speed hand pieces, mouth rinsing before dental procedures, and routine disinfection of the clinic. In addition, some guidelines and reports provided useful information about the signs and symptoms of COVID-19, the routes of transmission, and update recommendation to increase dentists’ knowledge of prevention practices to contribute at a population level to disease control and prevention [32,36,39].
In the wake of the COVID-19 outbreak, various organizations, such as the American Dental Association (ADA)  and the American Dental Hygienists’ Association (ADHA)  have recommended postponing all elective dental procedures and noncritical dental care. Similarly, the Centres for Medicare and Medicaid Services (CMS)  recommend that all nonessential dental examinations and procedures be postponed until further notice.
With restrictions in dental practice during the COVID-19 pandemic, Minimal Intervention Dentistry (MID) has several advantages as it exposes patients to lower risk aerosols, reduces the need for local anaesthesia, and can be performed over a short period of time . The Atraumatic Restorative Technique (ART), resin infiltration, the application of sealants, silver diamine fluoride (SDF) application, the chemo-mechanical removal of caries, and the Hall technique are examples of minimally invasive approaches [44,45].
Atraumatic restorative technique (ART)
The WHO has approved the ART as a method of repairing and preventing caries in people who do not have access to conventional dental services . The ART technique includes the excavation of caries using only hand tools and restoring the cavity with high-viscosity glass ionomers cement . It is a time-tested method of providing restorative services to children, with high success rates . For young children who are afraid of traditional drills and local anaesthesia, the ART procedure is extremely beneficial . Also, due to the low risk of aerosol production, the ART method can be considered as the first treatment choice for repairing carious lesions in primary and permanent teeth . However, the ART procedure is only used in situations when there is no visible pulpal exposure, a history of sore teeth, and a deep carious lesion where the dentist believes that excavating carious tissue would not expose pulp or tooth areas open to hand instruments . Despite these drawbacks, the ART technique is a secure and efficient way to restore teeth during a COVID-19 pandemic since it is classified as a reduced Aerosol Generating Procedure .
Resin infiltration is a procedure that involves filling the interproximal areas of teeth that contain non-cavitated carious lesions with a low-viscosity composite resin. Inside the lesion, the resin creates a diffusion shield. Cavity cutting and temporary tooth separation are not necessary in this technique. While the evidence detailing the long-term benefit and usefulness of resin penetration in preventing or arresting carious lesions is mixed, this method can be useful in the current situation during a COVID-19 .
The majority of carious lesions in infants, teens, and young adults are pit and fissure caries. Non-cavitated carious lesions may be stopped or reversed by filling such pits and fissures on the occlusal surface of the tooth with a low-viscosity composite material. Bacteria present in such a sealed tooth were found to be smaller than those excavated from a typical carious lesion. As no cutting of the tooth surface is typically required for this method, dentists can reduce the level of aerosols produced before applying the sealant. The efficacy of the sealant at avoiding caries is backed by data of modest consistency. This preventative technique was used before the pandemic and can be used after as it may avoid or prevent the development of new caries [52,53].
Silver diamine fluoride (SDF)
SDF is a non-restorative caries control method. The use of a 38% SDF solution twice per year has been shown to inhibit and/or prevent coronal caries in the primary teeth of preschool children, as well as on the root surfaces of permanent teeth in adults. This treatment results in the blackish discoloration of teeth, and thus, it may not be suitable for all patients, or in the anterior teeth [54-56]. Non-restorative caries control is common, but a renewed focus during the current and post- COVID-19 era is critical.
Chemo-mechanical removal of caries
The chemo-mechanical removal of caries is a noninvasive procedure that uses a chemical agent to remove the infected dentin. It is a dissolution-based process wherein, instead of drilling, gentle excavation with hand tools, such as excavators may be used to remove the softened material. Caridex, carisolv, and papacarie are popular agents for chemo-mechanical cavity preparation (papain gel). This technique is effective in the treatment of fearful and medically compromised patients, as well as in patients who contraindicated local analgesics. The use of an airotor for the final restoration of the tooth can be reduced by chemical softening of the carious tissue .
The hall technique
In 2006, Dr. Norna Hall of Scotland introduced the Hall Crown Method, which uses preformed metal crowns . The Hall technique is a non-invasive, non-aerosolproducing procedure for restoring a child's carious, yet asymptomatic, primary molar. It requires the insertion of a stainless-steel crown over a carious posterior primary tooth, without the removal of carious tissues.
Caries is stopped when bacteria in the carious lesion die due to the lack of nutrients. In the COIV-19 pandemic, where we want to reduce aerosol production, the Hall technique can be very useful . Similar to the situation with SDF, no cavity preparation is needed with the Hall technique.
The challenges in this pandemic will be countless. However, with flexibility, knowledge, and a continual adaptation process, pediatric dentists will face these challenges and continue to strengthen the profession in the future . The return to elective procedures in pediatric dentistry will continue to require the use of enhanced personal protective equipment (PPE) [9,61-63]. It is believed that this new routine of dawning PPE can cause unfamiliarity to children demanding humanized care and necessitate behavior management before and during procedures .
COVID-19 has caused worldwide health problems. Despite attempts to contain the disease, it continues to spread through the population. COVID-19 infections are rare among children, but the true figures are likely underestimated. Pediatric dentists must remain current with international and local institutional recommendations because countries faced the pandemic. Where appropriate, non-aerosol and minimally invasive methods in removing caries would be preferred.
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The author has no conflicts of interest in relation to this work.
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Citation: Manal Ali Almutairi, The Coronavirus Disease 2019 (COVID-19) Outbreak: Challenges for Pediatric Dentistry, J Res Med Dent Sci, 2021, 9(9): 116-121
Received Date: Aug 17, 2021 / Accepted Date: Sep 02, 2021 /