AIM The aim was to examine the technical quality of root fillings and periapical status of root-filled and nonroot-filled teeth restored with crowns and bridge retainers through a retrospective analysis of orthopantomographs (OPTGs) in an adult Turkish subpopulation. MATERIALS AND METHODS In this study, the digital OPTGs of adult patients between the ages of 20 and 70 who appealed to the Endo...

The aim of this ex vivo was to investigate if two radiopaque root canal sealers with different formulations would influence the radiographic perception of root canal fillings. The root canals of 48 extracted maxillary canines were prepared and randomly assigned to 3 groups of 16 specimens each. In each group, the root canals were filled by lateral condensation of gutta-percha and one of the tes...

PURPOSE There is insufficient data regarding the durability of porcelain laminate veneers bonded to existing composite fillings. The aim of the present study was to evaluate the fracture resistance and microleakage of porcelain laminate veneers bonded to teeth with existing composite fillings. MATERIALS AND METHODS Thirty maxillary central incisors were divided into three groups (for each gro...

Phase diagrams of the two-dimensional one-band t-t ′ Hubbard model are obtained within the two-patch and the temperature-cutoff many-patch renor-malization group approach. At small t ′ and at van Hove band fillings anti-ferromagnetism dominates, while with increasing t ′ or changing filling anti-ferromagnetism is replaced by d-wave superconductivity. Near t ′ = t/2 and close to van Hove band fi...

OBJECTIVE The aim of this study was to evaluate the performance of a new glass ionomer filling material (Chem-Flex) using the atraumatic restorative treatment (ART) approach in class I cavities in the permanent dentition of Latvian schoolchildren. METHODS A total of 63 fillings (40 test and 23 control) were placed using the ART technique in 41 schoolchildren in Riga at the Stomatology Institu...

This is a continuous work on the project of a doubly-fed permanent magnet (DFPM) generator for wind turbines. The construction of a prototype machine was finally finished and experiments were conducted to verify the design of the DFPM machine and to establish a basis for designing more powerful machines in industry usage. In the thesis, a finite element model of the machine is established, from...

In this paper, a synchronous/permanent magnet hybrid(SynPM) machine is presented. It is shown that the machine has good power density and efficiency, and that the machine has true field regulation capability. The principle of operation, finite element analysis and simulation of this new machine are investigated in the paper.

The purpose of this study was to determine the effect of calcium sulfate (CS) on cementum deposition and osseous healing after periradicular surgery. The root canals of 24 mandibular premolars in four 2-yr-old beagle dogs were endodontically treated, followed 2 weeks later by periradicular surgery. Mineral trioxide aggregate (MTA) was used as root-end-filling material. The right or left side wa...

We show that on an open bounded smooth strongly pseudoconvex subset of C, there exists a Kähler-Einstein metric with positive Einstein constant, such that the metric restricted to the Levi distribution of the boundary is conformal to the Levi form. To achieve this, we solve an associated complex Monge-Ampère equation with Dirichlet boundary condition. We also prove uniqueness under some more as...