Dental Emergencies.

Dental emergencies present frequently to the emergency department and urgent care centers. Trauma to the teeth includes fractures, luxations, and avulsions, which can be reduced in most cases. Avulsed primary teeth should never be replaced.

The influence of environmental conditions on kinetics of arsenite oxidation by manganese-oxides.

Background: Manganese-oxides are one of the most important minerals in soil due to their widespread distribution and high reactivity. Despite their invaluable role in cycling many redox sensitive elements, numerous unknowns remain about the reactivity of different manganese-oxide minerals under varying conditions in natural systems. By altering temperature, pH, and concentration of arsenite we were able to determine how manganese-oxide reactivity changes with simulated environmental conditions.

Recurrent respiratory depression associated with fentanyl transdermal patch gel reservoir ingestion.

Background: Opioid abuse is common in the United States and is currently on the rise. Fentanyl transdermal patches (FTPs) have been on the market since 1991, and have recently become a popular source of opioids for abusers. There are currently two distinct FTP designs available on the market today; a gel reservoir system and a matrix construct.

Quantification of rapid environmental redox processes with quick-scanning x-ray absorption spectroscopy (Q-XAS).

Quantification of the initial rates of environmental reactions at the mineral/water interface is a fundamental prerequisite to determining reaction mechanisms and contaminant transport modeling and predicting environmental risk. Until recently, experimental techniques with adequate time resolution and elemental sensitivity to measure initial rates of the wide variety of environmental reactions were quite limited. Techniques such as electron paramagnetic resonance and Fourier transform infrared spectroscopies suffer from limited elemental specificity and poor sensitivity to inorganic elements, respectively.