OBJECTIVE To evaluate the effect of a light-transmitting post on the depth of cure of a resin composite. METHODS Acetate resin molds were filled with resin composite in which a light-transmitting post was inserted into the center and photopolymerized to the manufacturer's recommendations. Identical molds without a light-transmitting post were photopolymerized in a similar matter and served as...

background and aims. today light cured composites are widely used. physical and mechanical properties of composites are related to the degree of conversion. light curing unit (lcu) is an important factor for composite polymerization. aim of this study is evaluation of composite resins hardness using halogen and led light curing units. materials and methods. in this study, 30 samples of filtek z...

The author discusses in this paper the potentialities of Herbal medicine in modern therapy. Also he throws some light on the importance of natural drugs which bring about cure without generation side-effects.

OBJECTIVE Development of a new device to be coupled to light-curing units for bonding orthodontic brackets and accessories, and test its efficacy in an in vitro mechanical trial. The inner surface of the device is mirrored and is based on physical concepts of light refraction and reflection. The main advantage of such device is the reduced clinical time needed for bonding and the low possibilit...

We herein propose a proof of concept full dual-band electrochromic (EC) device able to selectively modulate solar light between 300 and 1600 nm. Dual-band control was achieved by exploiting the complementarity cooperation two earth-abundant nontoxic transition metal oxide nanocrystalline materials absorb different spectral regions when electrochemically charged. The active were obtained through...