Introduction Commonly, when a person is infected with a viral or bacterial infection, the body becomes weak, emaciated. As a result of that, opportunistic infections like fungi and bacteria enters the body greedily. And as a dentist, i can say that most likely in the case of coronavirus as a virus that affects the immune system, respiratory tracts and lungs, this opportunistic infection can infect the    cavity, some symptoms appear on the gums, tasting and swallowing

Aim. To study the impact of opportunistic infections that associated with COVID-19 and its relationship with cavity

Materials and methods: The experimental study was performed on Some immunocompromised patients that got infected with coronavirus in some Arabian countries.

Results: The increased case reports of opportunistic infections in COVID-19 patients raise an important concern, especially for patients with chronic diseases and who received immunosuppressive treatment therapy like cancer and so on. Among the opportunistic infections, i found that fungal infections like Aspergilli, Candidiasis and Cryptococcosis account for the most case reports in COVID-19 patients. Other reported pathogens were related to viral, bacterial, protozoa or helminth infections. The presence of fungal infection along with COVID-19 made the prognosis poor, increasing the risk of severe symptoms that occurred in two patients, and even it leads to death.  As a result of a weak immune system in some cases, fungal infection can occur even after they have recovered from COVID-19. 

Conclusions: If the patients are suffering from a chronic illness or are on any kind of immunosuppressant, their immune system is compromised, and they are high-risk. This means if patient is to contract the virus, there is higher risk that patient symptoms will be more severe. In the worst cases, COVID-19 infections can result in death to the patient.