Introduction: Since the 2019 Coronavirus Disease (COVID-19) was classified as a pandemic infection on March 11, 2020, it has spread rapidly around the world. The total number of confirmed infections was 217,119,281 and the total deaths were 4,510,202 worldwide, as of August 31, 2021. The changes in life caused by these new threats also impacted patient care. Medics around the world have had to adapt to this new reality. There is a lot of research into the impact of the COVID-19 pandemic on the diagnosis and treatment of other diseases, including cancer. The aim of the study: Paying attention to the causes of delays in the diagnosis of cancer during the COVID-19 pandemic, with particular emphasis on oral cancer.Material and method: The research was done using the PubMed and Google Scholar articles about the topics of: covid-19 pandemic; oral cancer; healthcare; cancer diagnosisDescription of the state of knowledge: The COVID-19 pandemic has had a huge impact on the entire health system around the world. According to various studies, there were fewer cancer diagnoses between 2020 and 2021. Studies have identified the causes of these delays, such as: overwork and fatigue of health care workers, limited access to doctors due to quarantine, patients' fear of being infected in a health care facility, and the lack of follow-up visits, including dental visits.Summary:Undoubtedly, the coronavirus (COVID-19) pandemic has put the people with chronic illnesses and those who are immunocompromised at the most risk. Solutions such as telemedicine during lockdown may be helpful in caring for cancer patients, but cannot replace a comprehensive examination by a doctor, especially in the case of oral cancer. As a result of the diagnostic delays caused by the COVID-19 pandemic, a significant increase in the number of cancer deaths worldwide is expected.

Introduction: COVID-19 appeared in 2019. The first outbreak of the disease was in China, but it quickly spread to other countries, thus becoming a pandemic. This caused a tremendous stress and anxiety among the public, which also had a negative impact on their mental health. People with obsessive-compulsive disorder are especially sensitive in this respect. The aim of the study: Paying attention to the correlation between exacerbation of obsessive-compulsive symptoms and COVID-19 pandemic. Material and method: The research was done using PubMed and Google Scholar articles about the topic of: obsessive-compulsive disorder, COVID-19 pandemic, stress, mental health. Description of the state of knowledge: According to many studies, the COVID-19 pandemic has negatively impacted mental health of people with obsessive-compulsive disorder. The stress related to the pandemic resulting from concerns about being infected exacerbated the symptoms of obsessive-compulsive disorder. Doctors should pay close attention to OCD patients during pandemic and provide them with the treatment they need. Summary: Research results confirmed that COVID-19 contributed to the deterioration of symptoms in people with obsessive-compulsive disorder.

Introduction and purpose: Masticatory muscles hyperactivity is currently a very common problem among adult population. The ignorance of the symptoms and the lack or unsuccessful treatment may lead to serious health complications, which lead to major focus on improvement of the standard therapy for bruxism. The aim of the study was to provide a broad review on the promising treatment of bruxism symptoms with botulinum neurotoxin injections. Material and method: The review was conducted based on an available literature on PubMed database, searching the following phrases: bruxism, botulinum neurotoxin. Results: As bruxism has a very complex etiology, the treatment can not be narrowed down to one therapy system. Despite the fact that botulinum neurotoxin injections can not solve the primary reason of bruxism occurrence, it has shown excellent results in treatment of symptoms, since the substance has an ability to induce muscle relaxation. Therefore, such pain relief substance has shown a much better performance and long lasting results in comparison to drug therapy or behavioral treatment. Conclusions: The research confirmed that the usage of botulinum in the treatment of masticatory muscles hyperactivity is safe, well-tolerated by the patients and shows satisfying results. Conducted studies have proven that the most effective way of bruxism treatment is a therapy, which tackles both complex etiology of the disorder and its symptoms.

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Introduction and purpose: Xerostomia is a salivary secretion malfunction that affects from 1 to 29% of the population. It is a common problem among elderly patients, however undeniably it still remains an underdiagnosed issue. Searching among available literature in the PubMed database with the following phrases: xerostomia; elderly, the aim of this article was to provide a broad review on the underdiagnosed problem which is xerostomia among elderly patients. Description: A group at risk of developing xerostomia are people over 65 years old and women in the perimenopausal period. Although dry mouth varies in etiology, geriatric patients mostly develop xerostomia as a result of head and neck radiotherapy, Sjögren syndrome or medication treatment.  Untreated symptoms can lead to severe issues which heavily impact not only oral health of the patient, but also their everyday life quality, since xerostomia may lead into difficulty of speaking, swallowing and tasting. The plan of treatment is influenced by the etiology of the case, however it is aimed to stimulate salivary flow and eradicate the use of unnecessary medication which may cause dry mouth. Prevention of dry mouth is based on maintenance of good oral hygiene. Conclusions: Diagnosing the problem early can prevent patients from suffering the consequences of chronic xerostomia, therefore awareness should be brought to this issue. Dentist could also highly improve the quality of xerostomic patient’s life, if the chosen treatment significantly improved patient’s symptoms.