Diagnostic strategies for diseases with fever in dental clinics. / å£è ”å‘çƒ­ç–¾ç— è¾¨æžç­–ç•¥.

Fever is an increase in body temperature beyond the normal range, acting as a protective inflammatory mechanism. This article summarizes diseases with fever encountered in dental clinics, including what is known about pyrexia in coronavirus infection, and further proposes a "six steps in one" identification and analysis strategy to guide the clinical work of stomatology.

Treatment of patients with coronavirus disease 2019 and cross-infection in dental clinics in Korea.

OBJECTIVES: The aim of the study was to investigate patients with coronavirus disease 2019 (COVID-19) who visited dental clinics for treatment and to analyse the occurrence of additional COVID-19-confirmed cases according to the type of dental treatment and use of personal protective equipment (PPE). METHODS: Interviews were conducted in November 2021 via telephone, and written questionnaires were administered to dental hygienists working at the 24 dental clinics selected for the study, visited by patients with COVID-19. The survey focused on the visit date, the treatment received, whether or not the dental personnel wore PPE while treating the patient, and how the dental clinic and the public health centre with jurisdiction over the clinic responded after the patient's visit. RESULTS: Additional confirmed cases occurred in two of the 24 dental clinics included. In both cases, scaling was performed, dental personnel did not use a face shield, and patients with COVID-19 were asymptomatic. In 14 of the 22 dental clinics where additional confirmed cases did not occur, the dental personnel did not use face shields, and in 10 clinics, the dental personnel wore dental masks but not a KF94 mask. Based on these findings, which were obtained before the advent of the omicron variant, COVID-19 cross-infection did not appear to be high in dental clinics. CONCLUSION: The rate of COVID-19 cross-infection before the advent of the omicron variant appeared to be low in dental clinics in Korea. Therefore, patients have no reason to delay necessary dental treatment if dental personnel put effort into wearing PPE.

Novel use of riboflavin as a fluorescent tracer in the dissemination of aerosol and splatter in an open operatory dental clinic.

OBJECTIVES: The rapid spread of severe acute respiratory syndrome coronavirus 2 and the ensuing rise of the COVID-19 pandemic have impacted healthcare unprecedentedly. With the scarcity of available resources, including healthcare providers themselves, novel methods for tracking aerosol and splatter in real time are required to alleviate demand and increase safety. This study evaluates the utility of riboflavin (vitamin B2 ) as a tracer for splatter/aerosol distribution from ultrasonic scaling in an open operatory clinic. MATERIAL AND METHODS: In two experimental designs, ultrasonic scaling was performed on 18 volunteers or simulated on a manikin. Riboflavin was introduced into the irrigation system, and aerosol and splatter dissemination were evaluated for both experimental designs. RESULTS: Ultrasonic scaling utilizing riboflavin solution, in volunteers and manikins, leads to observable particle fluorescence under UV light. Contamination distribution varied across the different suction methods and between the volunteer and manikin trials. Nearly all observed incidences of contamination occurred within the operatory in use. CONCLUSIONS: Riboflavin can be used with minimal risk during dental procedures and allows for the detection of droplet spread in clinical settings in real time.

Fluorescent Marker as a Tool to Improve Strategies to Control Contaminated Surfaces and Decrease Danger of Cross-Contamination in Dental Clinics, during and beyond the COVID-19 Pandemic.

The COVID-19 pandemic posed an increased threat to dental personnel and patients. Close encounters with patients' breath and saliva and the use of intraoral rotating instruments which disperse microscopic airborne particles both increase the possibility of environmental infection. In this study, fluorescent marker (FM) was used to assess and enhance surface cleanliness in the dental clinics and public areas of a major dental school. Initially, 574 surfaces in various areas of a dental school were marked with FM for 3 consecutive months to monitor the surface cleanliness. The initial evaluation results were visually presented to both students and para-dental and cleaning personnel during a designated educational session, and were used to stress the importance of preventing cross-contamination. Following educational intervention, 662 surfaces were re-examined for an additional 3 months, using the same method. A significant improvement in the surfaces' cleanliness (ANOVA, F(1) = 10.89, p < 0.005) was observed post-intervention. The results were more prominent in students' clinics, which were the students' cleaning responsibility. The results show that fluorescent markers can serve as an educational tool to improve strategies to control contaminated surfaces in large clinics, such as dental schools. Their use can substantially decrease the hazard of cross-contamination during the pandemic and beyond.

Dental Utilization in a Pediatric Emergency Department and Urgent Care Centers Before, During, and After Shutdown of a Pediatric Dental Clinic During the COVID-19 Pandemic, 2019-2021.

OBJECTIVES: Limited data are available on how the closure of pediatric dental clinics because of the COVID-19 pandemic affected hospital pediatric emergency department (ED) visits in the United States. We evaluated changes in dental-related visits at a pediatric ED and associated urgent care centers (UCCs) after the shutdown of a large pediatric dental clinic because of the COVID-19 pandemic. METHODS: We conducted a single-center retrospective medical record review of 811 patients aged 0 to 17 years who presented to a pediatric ED or associated UCC at Rady Children's Hospital-San Diego for dental-related concerns from March 19, 2019, through January 17, 2021. Patients were classified into 3 periods: before shutdown, during shutdown, and after shutdown. We collected data on demographic characteristics; International Classification of Diseases, Tenth Revision codes; dental diagnosis; treatment; and COVID-19 test results. We compared the frequency and proportion of patients seen for dental-related concerns, dental diagnosis, and treatment during the 3 periods. RESULTS: The proportion of dental-related concerns in the ED doubled during the shutdown (0.7%) and was 1.5 times higher after the shutdown (0.6%) compared with before the shutdown (0.4%; P < .001). Significantly more patients were seen in EDs than in UCCs during and after the shutdown than before the shutdown (P = .005). During and after the shutdown, admission to the hospital for antibiotic treatment increased significantly to 6.5% and 7.9%, respectively, compared with before the shutdown (2.8%; P = .022), and nonaerosolized procedures and ED/UCC discharge increased to 13.4% and 9.3%, respectively, compared with before the shutdown (6.2%; P = .015). CONCLUSIONS: Mitigating future closures of dental offices is important given the shifted burden of dental care to the ED.

Current tobacco use and COVID-19 diagnoses in a cohort of adult clients of public dental clinics in Sweden.

Smoking has been linked with both increased and decreased risk of COVID-19, prompting the hypothesis of a protective role of nicotine in the pathogenesis of the disease. Studies of the association between use of smokeless tobacco and COVID-19 would help refining this hypothesis. We analysed data from 424,386 residents in the Stockholm Region, Sweden, with information on smoking and smokeless tobacco (snus) use prior to the pandemic obtained from dental records. Diagnoses of COVID-19 between February and October 2020 were obtained from health-care registers. We estimated the risk of receiving a diagnosis of COVID-19 for current smokers and for current snus users relative to non-users of tobacco, adjusting for potential confounders (aRR). The aRR of COVID -19 was elevated for current snus users (1.09 ;95%CI = 0.99-1.21 among men and 1.15; 95%CI = 1.00-1.33 among women). The risk for women consuming more than 1 can/day was twice as high as among non-users of tobacco. Current smoking was negatively associated with risk of COVID-19 (aRR = 0.68; 95% CI = 0.61-0.75); including hospital admission (aRR = 0.60; 95% CI = 0.47-0.76) and intensive care (aRR = 0.43; 95% CI = 0.21-0.89). The hypothesis of a protective effect of tobacco nicotine on COVID-19 was not supported by the findings. The negative association between smoking and COVID-19 remains unexplained.

Knowledge, attitudes, and practices related to COVID-19 among patients attending public dental clinics in Tanzania: A cross-sectional study.

INTRODUCTION: The risk of contracting COVID-19 through dental treatment is potentially high, thus several guidelines have been developed to minimize the spread of COVID-19 in the dental office worldwide. These changes have posed some relevant questions among oral health professionals regarding the understanding and attitudes of dental patients toward COVID-19. This study aimed to assess the knowledge, attitude, and practices of dental patients in Dar es Salaam, Tanzania. METHODOLOGY: This cross-sectional study was carried out in 4 public hospitals in Dar es Salaam, Tanzania involving 472 adult patients. Data were collected using a questionnaire that had a set of questions regarding knowledge, attitude, and practices (KAP) related to COVID-19. Data were analyzed using the SPSS computer software version 26. For descriptive analysis means, standard error of the mean, and proportion were used. Multivariate regression analysis was utilized for the response analysis. Alpha of less than 0.05 was considered to indicate statistical significance. RESULTS: Good levels of knowledge, attitude, and practices related to COVID-19 were found in 76.5%, 74.8%, and 58.1% of participants respectively. On performing multivariate analysis, odds of having good knowledge regarding COVID-19 were almost 2 folds higher in participants who were females, with high education levels, those without partners, and those with stable income. Females were 1.5 folds more likely to have a good attitude toward COVID-19 and odds of good practice against COVID-19 were 3 folds higher in young adults compared to the elderly. CONCLUSION: A majority of dental patients have good knowledge and attitude related to COVID-19. Predictors of good knowledge were sex, education level, marital status, and income of the participants. Sex predicted good attitude and age predicted good practice.

Cases of dental clinic visits by COVID-19-confirmed patients.

OBJECTIVES: This study aims to review cases of dental visits by patients who had confirmed COVID-19 infection in Seoul and Gyeonggi-do. It analyses the patterns of infection transmission among dental healthcare professionals and dental clinic visitors. METHODS: This study obtained data from reports on disease trends and press releases published by the Korea Centers for Disease Control and Prevention (KCDC) on its COVID-19 website. RESULTS: After examining cases of patients with a confirmed COVID-19 infection, 24 people (10 in Seoul and 14 in Gyeonggi-do) visited the dental office 1-13 days prior to their case confirmation; however, the spread of the virus in the dental office was not confirmed. CONCLUSION: The WHO and KCDC guidelines must be followed to curb transmission of the SARS-CoV-2 virus among dental patients and professionals.

The lockdown effect: The impact of the COVID-19-related confinement on the nature of dental emergencies and the number of patients seen at the Geneva university hospital's dental clinic.

PURPOSE: The aim of this retrospective case study was to evaluate the impact of the COVID-19 confinement on consultation number and nature of dental emergencies. MATERIALS AND METHODS: The investigators implemented a retrospective case-control study and enrolled a sample of patients who presented to the University Hospital of Geneva for dental emergencies during the COVID-19 confinement from March 16 to April 26, 2020. They were compared to a matched case-control group treated in 2018 and 2019. The predictor variable was the COVID-19 confinement. The outcome variables were consultation number and nature of dental emergencies. Other study variables included age, gender, socio-economic status, delay from symptoms to consultation and type of treatment. Descriptive and bivariate statistics were computed and significance level was set at ≤ 0.05. RESULTS: The study sample was composed of 1104 patients, with 386 in the case-study and 718 in the control group. No significant change in patient numbers was observed. In the case-study group patients were significantly younger (P= 0.004), had a significantly higher proportion of acute toothache and dental infections (P= 0.01), the main reason for consultation was pain or swelling (P= 0.01) and the delay from first symptoms to consultation was shorter compared to the controls (P=0.008). CONCLUSION: The COVID-19 confinement had no impact on the consultation number of dental emergencies. However, changes in emergency type were noted, with an increase in acute toothaches and infections and patients waited less time between the onset of symptoms to consultation.

Bacterial contamination on the inner surface of the masks used by clinicians in a dental clinic.

BACKGROUND: Wearing masks has become an essential safety measure during the coronavirus 2019 (COVID-19) pandemic. Especially clinicians in dental clinics should focus on infection control. However, there is currently no data regarding the frequency of replacement of the masks used in hospitals. Hence, it is necessary for dental clinic staff, who deal with many patients in an aerosol-producing environment, to have precise mask-wearing guidelines. OBJECTIVES: The aim of this study was to evaluate the contamination on the inner surface of the masks used by clinicians in dental clinics and provide basic data to describe hospital infection control guidelines in greater detail. MATERIAL AND METHODS: For Study I,12 participants were recruited. The experiment was conducted indoors. After wearing the mask, the temperature and the humidity inside the mask were measured at the set time points (immediately after wearing the mask, and 10 min, 30 min, 1 h, 2 h, and 4 h after wearing the mask). During the experiment, talking was not allowed. For Study II, 23 clinicians from dental clinics were recruited. After wearing the mask, the temperature, the humidity and the number of colony-forming units (CFU) inside the mask were measured at the set time points. Finally, 15 samples were selected for the study based on a survey. Bacterial identification was conducted using the 16S rDNA sequencing. RESULTS: The temperature and the humidity inside the mask increased significantly relative to room temperature and room humidity, respectively. Bacteria were found in all the masks worn for more than 10 min and the CFU values increased with the mask-wearing time. Bacteria belonging to the genera Staphylococcus, Bacillus and Roseomonas were detected in the used mask. CONCLUSIONS: A mask should not be worn for more than 2 h; however, the frequency of mask replacement can vary, depending on the number of patients encountered and the working environment.

Health risk assessment of inhalation exposure to dry fogging of hydrogen peroxide in a dental clinic during the COVID-19 pandemic.

After the outbreak of COVID-19, many dental clinics use dry fogging of hydrogen peroxide (H2O2) to disinfect the air and surfaces. Inhalation of highly concentrated solutions of H2O2 may cause severe respiratory problems. This study aimed to estimate the health risk assessments of inhalation exposure to dry fogging of H2O2 in a dental clinic. This cross-sectional, descriptive-analytical study was performed to determine the inhalation exposure and health risk of 9 dental clinic staff with H2O2 in six rooms. Occupational exposure to H2O2 was assessed using the OSHA VI-6 method and a personal pump with the flow rate of 500 mL/min connected to the midget fritted-glass impinger containing 15 mL of TiOSO4 collecting solution. The health effects of H2O2 exposure were assessed using a respiratory symptoms questionnaire. The health risk assessment of inhaled exposure to H2O2 was also performed using the method provided by the Singapore occupational health department. The mean respiratory exposure of clinic staff to H2O2 was ranged from 1.3 to 2.83 ppm for six rooms which was above the limits recommended by international organizations. Dyspnea (44.4%), cough (33.3%), and nasal burning (22.2%) were the most prevalent health problems. The results also showed a medium risk for endodontics and surgery, and lower risk for periodontics, restorative care, orthodontics, and prosthetics. The results of this study indicate that when using an automated hydrogen peroxide-vapor fogger, calculating the spraying time based on room volume and using the rooms after 30 min of fogging is very important and can greatly reduce the risk ranking.

Efficacy of dental evacuation systems for aerosol exposure mitigation in dental clinic settings.

Dental personnel are ranked among the highest risk occupations for exposure to SARS-CoV-2 due to their close proximity to the patient's mouth and many aerosol generating procedures encountered in dental practice. One method to reduce aerosols in dental settings is the use of intraoral evacuation systems. Intraoral evacuation systems are placed directly into a patient's mouth and maintain a dry field during procedures by capturing liquid and aerosols. Although multiple intraoral dental evacuation systems are commercially available, the efficacy of these systems is not well understood. The objectives of this study were to evaluate the efficacy of four dental evacuation systems at mitigating aerosol exposures during simulated ultrasonic scaling and crown preparation procedures. We conducted real-time respirable (PM4) and thoracic (PM10) aerosol sampling during ultrasonic scaling and crown preparation procedures while using four commercially available evacuation systems: a high-volume evacuator (HVE) and three alternative intraoral systems (A, B, C). Four trials were conducted for each system. Respirable and thoracic mass concentrations were measured during procedures at three locations including (1) near the breathing zone (BZ) of the dentist, (2) edge of the dental operatory room approximately 0.9 m away from the mannequin mouth, and (3) hallway supply cabinet located approximately 1.5 m away from the mannequin mouth. Respirable and thoracic mass concentrations measured during each procedure were compared with background concentrations measured in each respective location. Use of System A or HVE reduced thoracic (System A) and respirable (HVE) mass concentrations near the dentist's BZ to median background concentrations most often during the ultrasonic scaling procedure. During the crown preparation, use of System B or HVE reduced thoracic (System B) and respirable (HVE or System B) near the dentist's BZ to median background concentrations most often. Although some differences in efficacy were noted during each procedure and aerosol size fraction, the difference in median mass concentrations among evacuation systems was minimal, ranging from 0.01 to 1.48 µg/m3 across both procedures and aerosol size fractions.

Assessment of respirable aerosol concentrations using local ventilation controls in an open multi-chair dental clinic.

Dental procedures require patients to be unmasked throughout most of a dental visit, with some procedures generating both inhalable and respirable aerosols. Understanding aerosol generation and transport were important to developing protocols to protect both the patient and workers in dental environments early in the COVID pandemic. This study investigated the need, suitability, and effectiveness of using local exhaust ventilation units during patient procedures and examined the impact of patient density in a large, multi-chair dental clinic at an academic institution. Phase One measured respirable aerosol concentrations at the dental assistant's breathing zone and in neighboring unoccupied patient operatories. Results were compared during four dental procedures with three local ventilation (LV) options, with a single faculty performing procedures on a simulated patient. Phase Two deployed LV in all active patient operatories during procedures on actual patients and examined the impact of clinic patient occupancy on respirable aerosol concentrations throughout the clinic. During Phase One, respirable aerosol concentrations in nearby operatories were significantly higher during ultrasonic scaling (mean = 3.8 and SD = 0.3 µg/m3) and lower during rubber cup polishing (mean = 0.8 and SD = 0.5 mg/m3) (p < 0.001). While the same trend was identified for the dental assistant, differences were not significant. There was no difference in respirable aerosol concentrations by LV type when measured at the dental assist (p = 0.51, task means 3 to 32. 5 µg/m3) or neighboring rooms (p = 0.93, task means 0.6 to 4.0 µg/m3), indicating no improved control for any device tested. For Phase Two, the clinic deployed the extraoral suction (EOS) system in each patient operatory. The background-adjusted aerosol concentrations were significantly reduced (F < 0.001) when the operatories were occupied at 50% compared to 25%, likely attributed to increased air filtration of the room with double the EOS systems in use. While this study provides only a single case investigation, findings confirming respirable aerosol concentrations by procedure and across days provided insights into patient scheduling, local exhaust ventilation selection, and operation, which could be useful to other open multi-chair dental clinics.

Experimental evaluation of aerosol mitigation strategies in large open-plan dental clinics.

BACKGROUND: Aerosols are generated routinely during patient care in dentistry. Managing exposure risk requires understanding characteristics of aerosols created during procedures such as those performed using high-speed drills that operate at 200,000 revolutions per minute. METHODS: A trained dentist performed drilling procedures on a manikin's incisors (teeth nos. 8 and 9) using a high-speed drill and high-volume evacuator. The authors used high-speed imaging to visualize the formation and transport of aerosol clouds and particle sampling to measure aerosol concentration and size distribution at several locations. The authors studied several aerosol mitigation strategies. RESULTS: Aerosols produced during high-speed drilling were erratic and yielded high concentrations that were at least an order of magnitude above baseline. High-speed imaging showed aerosols initially travelled at 1 m per second. Owing to erratic behavior of aerosols, supplemental suction was not effective at collecting all aerosols; however, barriers were effective. CONCLUSIONS: Barriers are the most effective mitigation strategy. Other methods studied have limitations and risks. To the authors' knowledge, this article presents the first characterization of aerosols generated during high-speed drilling by a dentist. PRACTICAL IMPLICATIONS: With thorough preoperative planning and the use of this investigation's findings about effectiveness of mitigation strategies as a guide, dental offices may be able to return to prepandemic productivity.

Cross-infection and infection control in dental clinics in Nablus and Tulkarm districts.

BACKGROUND: Infection control had many developments in the COVID 19 (Coronavirus Disease 2019) pandemic, despite this, there were many complications in different health care facilities as well as dentists' clinics due to the lack of infection control knowledge and compliance failure. This study aimed to assess the level of knowledge and compliance with the infection control measures in the dental clinics in the Nablus and Tulkarm districts. RESULTS: The results showed that the total positive response regard all infection control domains were (70.0 %). Whereas the participants gave the highest positive response for personnel protective equipment i.e. gloving was (96.10 %). They gave the instruments related to controls the lowest responses, i.e. instruments sterilization was (59.40 %). The analyzed data showed significant statistical differences in the compliance with infection control measures between Nablus and Tulkarm districts "p < 0.05" in the interest of dentists from Tulkarm. CONCLUSIONS: In conclusion, the findings of this study showed that there is moderate compliance to infection control protocol in Nablus and Tulkarm dental clinics. Thus, there is a need to strengthen adherence to infection control measures. METHOD: A universal sampling was used to assess the infection control program at the dental clinics in Nablus and Tulkarm Districts. The study sample involved 265 dentists. Data was collected using a questionnaire which has been sent via email between July and August 2020. Descriptive statistics, Chi-square test, One-way ANOVA and Post-Hock tests have been used. Statistical significance was set at ″P <0.05″. Cronbach's alpha has been conducted to ensure the reliability and validity of the questionnaire.

Provision of dental care by public health dental clinics during the COVID-19 pandemic in Alberta, Canada.

OBJECTIVES: This study aims to describe dental services provided to a low income population in dental public health settings during the first wave of COVID-19 pandemic in Alberta, Canada. METHODS: Routinely collected clinical data were recorded by dentists in electronic medical record files at Alberta's two Public Health Dental Clinics (PHDCs). Patient contact was via teledentistry or in person, respecting phased provincial pandemic restrictions. A descriptive analysis of data relating to all patients contacting PHDC with dental problems between 17 March - 31 October 2020 was undertaken and compared to equivalent pre-COVID 2019 data. RESULTS: In the period examined, 851 teledentistry consultations and 1031 in person visits were performed. Compared to the same period in 2019, 46% fewer patients were treated, representing a decrease in dental procedures: tooth extractions (17%), silver diamine fluoride applications (17%), endodontic treatments (82%) and fillings (84%). By contrast, prescriptions increased by 66% overall; representing 76%, 121% and 44% in antibiotics, non-opioid analgesics, and opioid analgesics respectively. In both years, antibiotics were the most prescribed drugs (66% in 2019 versus 62% in 2020) followed by non-opioid analgesics (28% in 2019 versus 33% in 2020); opioids accounted for the remainder (6.5% in 2019 and 5% in 2020). The largest drug prescription increases occurred during April-May 2020, when access to care was most restricted: antibiotics and non-opioid analgesics were 300% and 738% higher than the same time in 2019. CONCLUSIONS: Teledentistry and pharmacotherapy were used to triage and organise dental patients accessing care during the early stages of the pandemic. However, teledentistry did not replace definitive in person dental treatment, particularly for low income populations with high incidence of toothache and odontogenic infection. Reduced provision of dental procedures was accompanied by an increase in drug prescribing. Expedient access to care must be provided to address the dental needs of this population avoiding risks of further complications associated with infection and overprescribing antibiotics and opiates.

Development and questionnaire-based evaluation of virtual dental clinic: a serious game for training dental students.

BACKGROUND: The volume of literature about serious gaming in dental education has increased, however, none of the previous studies have developed a serious game for closing the gap between preclinical and clinical training. OBJECTIVE: Virtual Dental Clinic (VDC) is a serious game that was created to help develop clinical reasoning skills in dental students. This study aimed to evaluate VDC as an educational tool and its effectiveness on clinical skill and knowledge gain among clerkship dental students. METHODS: The following three stages of VDC design and testing were addressed from 2016 to 2020: development, validation, and application. The VDC was developed using Unity game engine. In the validation stage, the content validity was reviewed by five visiting staff; construct validity and face validity were examined by 9 postgraduate-year dentists and 14 clerkship dental students. Concurrent validity and predictive validity were examined by 34 fifth-year dental students during their clerkship from September, 2018 to May, 2019, the associations between VDC experiences, clerkship performance, and the score on a national qualification test were explored. In the application stage, the VDC was set up as a self-learning tool in the Family Dentistry Department from August, 2019, quantitative and qualitative analyses were conducted using the 92 clerkship students' feedback. RESULTS: The VDC showed good validity and a high potential for education in practice. Students who have used VDC received significantly higher scores on qualification test (p = 0.029); the VDC experiences significantly predicted higher performance score on periodontics (p = 0.037) and endodontics (p = 0.040). After the outbreak of COVID-19 pandemic, significantly higher proportion of students confirmed the value of VDC as an assistant tool for learning clinical reasoning (p = 0.019). CONCLUSIONS: The VDC as an educational tool, and the effectiveness on clinical reasoning skills and knowledge gain among clerkship dental students has been validated and confirmed in this study.

Preventing the suspension of dental clinics by minimizing the risk of SARS­CoV­2 transmission during dental treatment.

Due to a high risk of the transmission of severe acute respiratory syndrome coronavirus 2 (SARS­CoV­2) during dental work, the coronavirus disease 2019 (COVID­19) pandemic has had a considerable influence on the functioning of dental clinics. The elevated risk of transmission is related to the production of aerosol containing secretions from the upper respiratory tract that is produced during dental procedures.The purpose of this narrative review was to present the current knowledge concerning COVID­19 and to propose methods for reducing the spread of the virus. Dental staff should follow the current guidelines and ensure safety at work through the use of personal protective equipment (PPE), including FFP2/FFP3 filter masks, the implementation of the screening protocols and telephone consultations as well as the appropriate preparation of dental practices and patient waiting areas. In addition, it is essential to reduce the number of people simultaneously occupying one building by effectively planning visiting times or discouraging patients from accompanied visits. Procedures that may contribute to production of the aerosol should also be limited.

[Strategy of dental clinics to cope with the epidemic period of infectious diseases based on the experience of corona virus disease outbreak].

The outbreak of corona virus disease (COVID-19) has raised concerns among dentists to develop strategies to prevent infection of dental equipment, materials, and patients during an epidemic period. Strategies following the National Laws and Standards of China and local standards of several provinces for controlling cross-infection and instituting protective measures for medical staff in dental clinics during an epidemic period are discussed. A proposal is put forth for dental clinics that will face similar situations in the future. Further research is warranted to address potential problems that will be encountered under such dire circumstances.