Introduction: Bond strength is an important property and determines the amount of force delivered and treatment duration in orthodontics. Many light-cured bonding materials are being used; but it is required to determine the most efficient one with desired bond strength. Objective: To determine and compare the shear bond strength of three visible light-cured composites (Transbond XT, Heliosit a...

There is an existing problem of cumulative hazardous effect of violet and near ultra-violet light which is produced by standard polymerisation units. Another restrict is shallow depth of cure, particularly of darker composite shades in premolar and molar region. Searching for better light source we used indium resonance lines from several indium high pressure lamps and tested curing effect on t...

Mask projection microstereolithography (MPμSL) uses a dynamic mask and focusing optics to digitally pattern UV light and selectively cure entire layers of photopolymer resin. These systems have been shown to be capable of creating parts with features smaller than 10μm. In this paper, the authors analyze existing MPμSL systems using functional decomposition. Within the context of a morphological...

During curing of thermosetting polymers, crosslinking results in hardening or stiffening the material. In electronics, for example encapsulating integrated circuits (die bonding), thermosets are fully cured a controlled environment (under UV-light within thermal oven) such that highest stiffness possible has been achieved. building materials, specifically used fastening systems (adhesive anchor...

Since it became evident that the CDM model for cosmic structure formation predicts smaller power on large scales than observed, many alternatives have been suggested. Among them, the existence of late decaying particle can cure it by delaying the beginning of the matter domination and increasing the horizon length at that time. We discuss the realization of this scenario and present the light n...

OBJECTIVES To compare curing performance of a second generation LED curing light with a high power tungsten quartz halogen (QTH). METHODS A hybrid composite resin (Filtek Z 250, 3M, USA) was used as test material and cured using a second generation LED light (Translux Power Blue™, Heraus Kulzer ,Germany) or a very high power QTH light unit (EMS, Switzerland). A two split aluminum mold was use...