Effect of dental headlights spectrum on the polymerization and working time of light-cured resin composites.

Background: The use of dental headlights is a common practice to better illuminate the operatory field and achieve excellence in restorative dentistry. However, visible light-cured dental materials can have reduced working time under headlight illumination. The aim of this study was to evaluate the influence of the spectral irradiance power of two dental headlights on the degree of polymerization and working time of light-curable dental composites.

Alkali production in the mouth and its relationship with certain patient's characteristics.

Objectives: To assess the relationships among alkali production, diet, oral health behaviors, and oral hygiene.

Methods: Data from 52 subjects including demographics, diet, and oral hygiene scores were analyzed against the level of arginine and urea enzymes in plaque and saliva samples. An oral habit survey was completed that included: use of tobacco (TB), alcohol (AH), sugary drinks (SD), and diet.