Long-term persistent symptoms of COVID-19 infection in patients with diabetes mellitus.

Objective: The study aimed to assess the long-term persistent symptoms of patients with diabetes mellitus (DM) and COVID-19 infection at 9 months after acute infection.

Methods: This single-center cross-sectional study was conducted from May 20 to June 1, 2021.

Results: A total of 112 patients were included in the present study.

Postnatal expression of chondrogenic and osteogenic regulatory factor mRNA in the rat condylar cartilage.

Objectives: The condylar cartilage is a key site of growth and development of the mandible. The aim of this research was to determine the mRNA expression levels of a number of chondrogenic and osteogenic regulatory factors in the condylar cartilage of the postnatal rat.

Materials And Methods: Condyles were extracted from 40 rats aged 4, 10, 21 or 90 days with 10 rats assigned to each age group.

Noise levels in dental school clinics.

Unlabelled: Prolonged exposure to noise is a little-investigated occupational hazard in dentistry. There is anecdotal evidence suggesting that noise levels in four student clinics at the School of Dentistry are higher than the current occupational noise level guidelines in New Zealand, Australia and the United Kingdom, which suggest that levels should not exceed 85 dB (A) over a duration of 8 hours. The objectives of this study were to (1) measure the noise levels in the student clinics, and (2) determine whether they exceed current guidelines for occupational noise levels.