Many imaging systems produce pictures by the superimposition of two fields of frames of interlaced sequences. Pictures obtained in this way, which are termed composite frames, are severely degraded if relative motion between the camera and the scene occurs. In the presence of motion the composite frame is affected by two types of distortion: the edge staircase effect that is due to the fact tha...

This article briefly presents the classification, and possible ways of application of composites. Our objective was to compare three different restoration technique in class II cavity preparations, with the aim to determine which technique is the most advantageous in practical point of view. Artificial teeth fabricated from self-curing acrylic resin were used as models. Comparison of marginal s...

Composite resin restoration has been increasingly used in restorative dentistry with patient’s demands, and also composite resin materials as well as bonding agents have been developed continuously. Despite of these developments, several factors, such as inadequate form, wear, color mismatch, chipping or bulk fracture may still present concerns. In case of failure, the clinician must determine ...

Composite restoration materials have been in use for more than two decades as an aesthetic alternative to metal restorations in the posterior region, which bears a great deal of the masticatory load, with increasing frequency in recent years (Kelsey et al, 2000). The early clinical data on the posterior region, gathered in the early 1980s, was not encouraging, primarily due to insufficient mech...

reasons for the limited lifespan of those restorations.2-5 Predominantly in recent years, these inadequacies have been greatly reduced through further developments in the materials of the composite and adhesive systems.6 Nevertheless, the negative effects of polymerisation shrinkage – such as poor marginal integrity, insufficient adherence to the cavity walls or cusp deflections – still represe...

Materials and methods: A total of 30 restorations (twelve subjects), 18-38 year olds with class IV carious upper anterior teeth were included, divided into three groups. Each group (n=10 restorations) was randomly restored with the same restoration material type; Beautifil II nano hybrid composite resin (Shofu Dental Corporation, USA), IPS Empress Direct nano hybrid composite resin (Ivoclar Viv...

BACKGROUND "Stamp" technique is a new method for placing large composite restorations with accurate occlusal topography. It was introduced mainly to restore Class I cavities and erosively damaged teeth. This technique is indicated when the preoperative anatomy of the tooth is intact and not lost due to the carious lesion. A precise tooth-like filling an accurate functional occlusion is obtained...

PURPOSE Anomalous origin of the left coronary artery from the pulmonary artery is optimally treated by creating a dual coronary system. Our aim was to review the results of operations performed in these patients and determine the intermediate-term outcomes for left ventricular function and mitral regurgitation. METHODS Between July 2004 and January 2009 seven patients (5 boys, 2 girls) aged b...

PURPOSE To evaluate the clinical performance of direct Class II fiber-reinforced composite restorations on nonvital teeth. MATERIALS AND METHODS Thirty patients age 18 or older were included in this clinical trial restoring 35 molars. The inclusion criteria were: two- to four-surface restorations, replacement of composite and amalgam restorations necessary or unrestored teeth with decay reach...