While traditional shade guides have been developed to facilitate shade selection for various restorative procedures, these tools are often fabricated according to the properties of porcelain materials rather than composite resin options. Contemporary composite resin restorations are often fabricated using incorrect guides that can compromise the final result. This article describes a predictabl...

Splitting spunlaid composite filament is a most significant technique to manufacture nonwoven with microfibers. The splitting effect of composite filament is a direct impact on the performance of the final products. The paper summarizes present methods of splitting composite fibers at home or abroad, and the principle and characteristic of each method is also described in order to discuss the m...

BACKGROUND Although composite restorations are really valuable for esthetic zones, they have shown less longevity rather than amalgam restorations. Since it may be related to the method used for curing the composite, postcuring could increase the degree of conversion and result in more long-lasting composite restorations. This study was planned to evaluate the effect of two different postcuring...

statement of problem: one of the factors affecting the degree of polymerization of light-cured composites is the type of light-curing unit used. in addition, physicomechanical properties of composite resins depend on the degree of conversion and polymerization. objectives(s): since the type of initiator in new composite resins is not explained by manufacturers, this study is an attempt to compa...

In this study, A finite element model based on the third order theory is presented for the active vibration control of composite beams with distributed piezoelectric sensors and actuators. For calculating the total charge on the sensor, the direct piezoelectric equation is used and the actuators provide a damping effect on the composite beam by coupling a negative velocity feedback control algo...

The hardware implementation of the Substitution-Box (S-box) of the Advanced Encryption Standard (AES) always employs composite field GF ((2)) to obtain better efficiency. In this paper, an improved class of S-boxes by direct inversion in composite field is presented, and the choice of the subfield leading to the most efficient implementation is discussed. Eliminating the field isomorphic transf...

The late Dr. John Gwinnett, one of the most brilliant and respected members of the dental research and teaching community, often characterized bonding as a chain, a series of links between the restorative material being placed and the tooth tissues.1 And as in a chain, the bond of a restorative material to the tooth substrate is only as strong as its weakest link. Dr. Gwinnett inspired a new ge...

We show that neutron scattering and Raman scattering experiments can unambiguously determine a composite fermion parameter, viz., the effective number of Landau Levels filled by the composite fermions. For this purpose, one needs partially polarized or more preferably unpolarized quantum Hall states. We further find that spin correlation function acts as an order parameter in the spin transitio...

In recent years, the increasing demand for aesthetically appealing, naturally-coloured dental restoration options has given rise to a growth in the use of composites in the posterior dental area [1-5]. The declining acceptance of dental amalgam and the mercury problem also makes an alternative to amalgam necessary [6,7]. In a statement from the German Scientific Association for Operative Dentis...

UNLABELLED Toothwear is increasing in prevalence. Traditional treatment methods for moderate or advanced toothwear, such as indirect restorations and crown lengthening surgery, are invasive and destructive of remaining tissues. The 'Dahl technique' has been used to obtain space for anterior restorations and has been modified such that direct composite restorations are placed at increased occlus...