Assessing Providers' knowledge about and barriers to lung cancer screening.

Objective: Low dose computed tomography (LDCT) for lung cancer screening (LCS) is underutilized despite its demonstrated mortality benefit compared to chest radiography. Our study aimed to assess knowledge about LCS and barriers to ordering LDCT from the viewpoint of primary care and pulmonology providers in academic and community settings.

Methods: Providers of various specialties (pulmonology, family medicine, internal medicine, geriatric medicine) who were practicing in Southern California and provided care to patients aged 50 or more were asked to complete a 10-minute survey to assess knowledge about LCS criteria, and barriers to the use of LDCT scan screening.

Compromised dental cells viability following teeth-whitening exposure.

This study aimed to assess the viability of dental cells following time-dependent carbamide peroxide teeth-whitening treatments using an in-vitro dentin perfusion assay model. 30 teeth were exposed to 5% or 16% CP gel (4 h daily) for 2-weeks. The enamel organic content was measured with thermogravimetry.