Severe hemostatic disorders against the background of COVID-19 have a significant effect on the state of dental status. The study aimed to improve the effectiveness of dental care for patients with COVID-19 disease. To study the dental status of patients with COVID-19 undergoing inpatient treatment, to compare the change in saliva pH with the results of SARS-CoV-2 detection in paired nasopharyngeal smears and saliva samples, to study the microcirculation and oxygenation level of periodontal tissues in patients with moderate and severe COVID-19 undergoing inpatient treatment. 194 people were examined, including 112 patients with the new COVID 19 coronavirus infection and 82 comparison group without concomitant pathology. All patients are divided into five age groups according to their recommendations. The complex of examination included assessment of dental status, determination of saliva pH, the study of microcirculation and oxygenation in the periodontium, and on the phalanx of the index finger of the right hand. Analysis of the results of the study shows that when assessing the dental status, the most characteristic complaints were dryness of the oral cavity, ageusia or hypogeusia, anosmia, or hyposmia. Gum bleeding was observed in two older age groups: in patients aged 45-54 years in 20% of cases, in 55-64 years -18.5% of cases. Less than a quarter of the patients complained of hypersensitivity of the teeth. The study of the saliva pH level revealed normal indicators of the acid-base balance of the oral cavity, which did not depend on the results of the PCR test for COVID-19.
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C omprehensive studies of the process of osseointegration have significantly expanded the indications for the use of dental implants [1, 2]. The ability of bone tissue to remodel affects the intensity of osseointegration and determines the further stability of the dental implant and, consequently, the service life of the entire orthopedic structure [3-5]. The increase in the operating time of orthopedic structures on dental implants dictates the need to search for new objective methods for assessing the quality of their stability [3, 6]. However, the variety of implantable materials offered in the market requires clinicians to use high-quality methods for predicting the effective osseointegration of dental implants, taking into account a personalized approach to assessing as many risk factors of the patient as possible at each stage of orthopedic treatment. Among such methods, the frequency-resonance analysis (RFA) method has shown its effectiveness in clinical practice for implantation systems of various manufacturers [7, 8].According to the existing ideas about the principles and sequence of stages in dental implant treatment, it is important to assess the stability of the implants before starting orthopedic treatment [9, 10].
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