Extension of the working time of dental composites due to a new type of white operating lamp.

Objectives: Dental composite materials for filling teeth are usually hardened by polymerisation lamps emitting blue light. However, the same wavelength is also emitted by light of dental operating lamps for lighting the oral cavity. Thus, the hardening of the composite is already initiated earlier, shortening the time of formability.

Multispectral X-ray imaging to distinguish among dental materials.

Purpose: Dual-energy X-ray imaging is widely used today in various areas of medicine and in other applications. However, no similar technique exists for dental applications. In this study, we propose a dual-energy technique for dental diagnoses based on voltage-switching.

Construction and in vitro test of a new electrode for dentin resistance measurement.

It is necessary to reduce the tooth substance before treating a tooth with a dental crown. The preparation often requires reduction of the dentin. This results in a dentin wound and a thinner substance over the pulp, increases the risk of inflammation, and could result in necrosis of the pulp.

On the effect of an internal light conductor on the marginal integrity of class-II composite fillings.

Objectives: The aim of this study was to examine the marginal behavior of class-II double surface fillings made with newly designed light transmitting inserts. These inserts guide the polymerization light directly into the body of the filling.

Material And Methods: Sixty standardized two-surface cavities have been prepared into freshly extracted human molars and filled with Herculite XRV.