Effects of COVID-19 lockdown on the mental health of dental students: A longitudinal study.

Objectives: Many countries have enforced lockdowns on their populations due to the coronavirus disease 2019 (COVID-19) pandemic. This study aimed to assess the effects of the lockdown on dental students.

Methods: A longitudinal, repeated cross-sectional study was conducted to evaluate psychological problems experienced by dental students during the COVID-19 lockdown in Saudi Arabia.

A randomized clinical trial of dentin hypersensitivity reduction over one month after a single topical application of comparable materials.

Dentinal hypersensitivity (DH) is a condition that causes patient discomfort. To evaluate the clinical efficacy of Gluma, fluoride varnish and Tetric N-Bond self-etch system in relieving DH immediately and over 30 days following a single topical application. The present randomized clinical trial was conducted on 55 patients with an age range 20-49 years.