Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has caused much anxiety and confusion in the community and affected the delivery of vital health care services, including dental care. We reviewed current evidence related to the impact of SARS-CoV-2/COVID-19 on dental care and oral health with the aim to help dental professionals better understand the risks of disease transmission in dental settings, strengthen protection against nosocomial infections, and identify areas of COVID-19–related oral health research. When compared with other recent pandemics, COVID-19 is less severe but spreads more easily, causing a significantly higher number of deaths worldwide. Protection of dental patients and staff during COVID-19 is challenging due to the existence of patients who are infectious yet asymptomatic. Dental professionals are ill prepared for the pandemic, as they are not routinely fitted for the N95 respirators now required for preventing contagion during dental treatments. Biological and clinical evidence supports that oral mucosa is an initial site of entry for SARS-CoV-2 and that oral symptoms, including loss of taste/smell and dry mouth, might be early symptoms of COVID-19, presenting before fever, dry cough, fatigue, shortness breath, and other typical symptoms. Oral health researchers may play a more active role in early identification and diagnosis of the disease through deciphering the mechanisms of dry mouth and loss of taste in patients with COVID-19. Rapid testing for infectious diseases in dental offices via saliva samples may be valuable in the early identification of infected patients and in disease progress assessment. Knowledge Transfer Statement: This commentary provides a timely evidence-based overview on the impact of COVID-19 on dental care and oral health and identifies gaps in protection of patients and staff in dental settings. Oral symptoms are prominent before fever and cough occur. Dental professionals may play an important role in early identification and diagnosis of patients with COVID-19.
Despite the advancement of early childhood caries (ECC) prediction and treatment, ECC remains a significant public health burden in need of more effective preventive strategies. Pregnancy is an ideal period to promote ECC prevention given the profound influence of maternal oral health and behaviors on children’s oral health. However, studies have shown debatable results with respect to the effectiveness of ECC prevention by means of prenatal intervention. Therefore, this study systematically reviewed the scientific evidence relating to the association between prenatal oral health care, ECC incidence, and Streptococcus mutans carriage in children. Five studies (3 randomized control trials, 1 prospective cohort study, and 1 nested case-control study) were included for qualitative assessment. Tested prenatal oral health care included providing fluoride supplements, oral examinations/cleanings, oral health education, dental treatment referrals, and xylitol gum chewing. Four studies that assessed ECC incidence reduction were included in meta-analysis using an unconditional generalized linear mixed effects model with random study effects and age as a covariate. The estimated odds ratio and 95% confidence intervals suggested a protective effect of prenatal oral health care against ECC onset before 4 years of age: 0.12 (0.02, 0.77) at 1 year of age, 0.18 (0.05, 0.63) at 2 years of age, 0.25 (0.09, 0.64) at 3 years of age, and 0.35 (0.12, 1.00) at 4 years of age. Children’s S. mutans carriage was also significantly reduced in the intervention group. Future studies should consider testing strategies that restore an expectant mother’s oral health to a disease-free state during pregnancy.
Oral Diseases (2012) 18, 317–332 The aim of this article is to review the clinical, pathophysiological, and therapeutic aspects of traumatically induced trigeminal nerve pain. We introduce a new and, in our view, more accurate terminology: peripheral painful traumatic trigeminal neuropathy (PPTTN) to define this patient group. The proposed pathophysiology of PPTTN is largely based on studies in spinal nerve injury models. However, trigeminal nerve injury studies have shown some subtle differences in response to physical and inflammatory insults, and these are discussed. The treatment of painful neuropathies is difficult and carries a poor prognosis. Based on the available literature on efficacy and side effects, we propose a treatment algorithm for traumatic trigeminal neuropathies.
The aim was to apply diagnostic criteria, as published by the International Headache Society (IHS), to the diagnosis of orofacial pain. A total of 328 consecutive patients with orofacial pain were collected over a period of 2 years. The orofacial pain clinic routinely employs criteria published by the IHS, the American Academy of Orofacial Pain (AAOP) and the Research Diagnostic Criteria for Temporomandibular Disorders (RDCTMD). Employing IHS criteria, 184 patients were successfully diagnosed (56%), including 34 with persistent idiopathic facial pain. In the remaining 144 we applied AAOP/RDCTMD criteria and diagnosed 120 as masticatory myofascial pain (MMP) resulting in a diagnostic efficiency of 92.7% (304/328) when applying the three classifications (IHS, AAOP, RDCTMD). Employing further published criteria, 23 patients were diagnosed as neurovascular orofacial pain (NVOP, facial migraine) and one as a neuropathy secondary to connective tissue disease. All the patients were therefore allocated to predefined diagnoses. MMP is clearly defined by AAOP and the RDCTMD. However, NVOP is not defined by any of the above classification systems. The features of MMP and NVOP are presented and analysed with calculations for positive (PPV) and negative predictive values (NPV). In MMP the combination of facial pain aggravated by jaw movement, and the presence of three or more tender muscles resulted in a PPV = 0.82 and a NPV = 0.86. For NVOP the combination of facial pain, throbbing quality, autonomic and/or systemic features and attack duration of > 60 min gave a PPV = 0.71 and a NPV = 0.95. Expansion of the IHS system is needed so as to integrate more orofacial pain syndromes.
Patients suffering from persistent pain after endodontic treatment have less efficient pain modulation system compared with healthy controls.
Objectives Heightened anxiety among dental healthcare professionals (DHPs) during the COVID-19 pandemic stems from uncertainties about the effectiveness of personal protective equipment (PPE) against dental aerosols and risk levels of asymptomatic patients. Our objective was to assess the risks for DHPs providing dental care during the pandemic based on available scientific evidence. Methods We reviewed the best available evidence and estimated the annualized risk (p= d a s (1−1- p 0 p 1 (1- e ) y n ) for a DHP during the COVID-19 pandemic based on the following basic parameters: p 0 , the prevalence of asymptomatic patients in the local population; p 1 , the probability that a DHP gets infected by an asymptomatic patient; e , the effectiveness of the PPE; s , the probability of becoming symptomatic after getting infected from asymptomatic patient; d a , the probability of dying from the disease in age group a ; n, number of patients seen per day; and y, number of days worked per year. Results With the assumption that DHPs work fulltime and wear a N95 mask, the annualized probability for a DHP to acquire COVID-19 infection in a dental office, become symptomatic, and die from the infection is estimated at 1:13,000 (0.008 %) in a medium sized city in the US at the peak of the pandemic. The risk estimate is highly age-dependent. Risk to DHPs under the age of 70 is negligible when prevalence of asymptomatic cases is low in the local community. Conclusions Risk of COVID-19 transmission in dental office is very low based on available evidence on effectiveness of PPE and prevalence of asymptomatic patients. Face shields and pre-procedure oral rinses may further reduce the risks. Clinical significance DHPs should follow guidelines on pre-appointment protocols and on PPE use during dental treatments to keep the risk low.
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