In vitro selection has proven itself as a great tool for isolating functional single stranded RNA sequences from large random pools. However, the multitude of available folding pathways leave many potentially functional sequences in misfolded states. This research aimed to use kinetic folding simulations of single-stranded RNA to test thermocycling as a means of overcoming energy barriers that ...

The aim of this in vitro study was to investigate three different cements for their suitability provide semi-permanent cementation, and compare the retention forces implant-supported single crowns (SC) three-unit fixed dental prostheses (FDP) luted with these cements. Twenty-four methacrylate models were supplied implants/abutments each simulate condition SCs/FDPs. Cobalt-chromium frameworks fa...

The problem of the article is designed to reveal proposed, developed and researched new method improving adhesion strength plasma wear-resistant coatings on outer surfaces weapons made high-alloy, heat-resistant steels, using additional cyclic (3-4) times their heating by laser radiation temperatures 0.6 – 0.8Tpl for a few milliseconds. purpose increasing resource use quality appearance weapon ...

Objectives: Resin-based composites are the most widely used dental restorative materials. Bulk-fill resin of rising interest as they can be clinically applied in thicker increments compared to conventional composites. The purpose study was evaluate flexural fatigue strength a and bulk-filled composite placed incrementally or non-incrementally. Methods: Resin specimens were fabricated using eith...

AIM The aim of this study is to compare the shear bond strengths of conventional resin cement and self-adhesive resin cement bonded to lithium disilicate. MATERIALS AND METHODS A total of 40 extracted human molar teeth were mounted in self-cure acrylic resin. Teeth were prepared to obtain flat occlusal surface. About 40 lithium disilicate specimens of dimension-10 mm in diameter and thickness...

OBJECTIVE To study in vitro the effect of two cross-linking silanes, bis-1,2-(triethoxysilyl)ethane and bis[3-(trimethoxysilyl)propyl]amine, blended with an organofunctional silane coupling agent, (3-acryloxypropyl)trimethoxysilane, on the shear bond strength between resin-composite cement and silicatized zirconia after dry storage and thermocycling. MATERIALS AND METHODS Six tested groups of...

This study evaluated the effects of three metal primers and one multi-mode adhesive system on the shear bond strength (SBS) of a flowable composite resin to nickel-chrome metal alloy (Ni-Cr). Ninety plates were cast from Ni-Cr and divided in nine groups (n=10). The surfaces were sandblasted with Al2O3 and primed with three adhesive primers: Alloy Primer (AP), Universal Primer (TP) and RelyX Cer...

STATEMENT OF THE PROBLEM Evaluation of the color stability of materials used for the fabrication of the base of complete and partial removable dentures provides important information in relation to their clinical service. The color stability of nylon-based polymers as denture bases, compared to that of acrylic resins, has not been extensively evaluated since to date. PURPOSE The aim of the pr...