Introduction: Bruxism is currently a very common disorder in patients and there has been an increase in cases since COVID started. Studies and clinical cases have shown that different adverse effects occur as a result.

Objective: To provide information about bruxism during the pandemic. It also explains the adverse effects that occur with this disorder: attrition, prosthetic complications, and temporomandibular disorders.

Methods: An electronic article search was carried out through the PubMed and Mendeley databases, using the keywords: "bruxism", "COVID", "anxiety", Boolean operators were used as AND and OR.

Results: Since the pandemic generated psychological stress, more patients developed bruxism. One of the effects in patients with bruxism is attrition, which occurs due to the grinding and clenching of the teeth. As much force is exerted on the teeth to suffer from this disorder prosthetic treatments tend to present complications. Bruxism and temporomandibular disorders have a great relationship since one lead to the other, signs include facial pain, headache, muscle pain, among others.

Conclusion: The pandemic has caused an increase of the cases of patients with bruxism due to the stress generated, which has adverse effects such as attrition, prosthodontics complications and temporomandibular disorders. It is important to detect this disorder in the patients before it starts to damage dental health and to know how to manage the cases depending on the problems they have.