INTRODUCTION Microleakage is an important clinical performance parameter of restorative materials. A literature review of the effect of thermocycling on microleakage revealed an incongruity of results. AIMS AND OBJECTIVES The aim of this study was to describe the effect of thermocycling on microleakage in Class V Permite amalgam restorations. METHODS Class V cavities were prepared at the me...

The aim of this study was to evaluate the effect of bleaching and thermocycling on microshear bond strength of bonded resin composites to enamel. Enamel slices were prepared from ninety-six intact human premolars and resin composite cylinders were bonded by using Adper Single Bond 2 + Filtek Z350 or Filtek silorane adhesive and resin composite. Each essential group was randomly subdivided to tw...

The purpose of this study is was to compare the color stability alkasite and other restorative materials commonly used in field pediatric dentistry a change response various beverages. Test specimens glass ionomer, resin modified material, composite were prepared, measured after thermocycling. Each specimen also subdivided into 5 groups submerged PBS, coffee, green tea, coke, orange juice analy...

Despite developments and advances in dental materials which allow for greater restorative performance, there are still challenges questions regarding the formulation of new compositions chemical reactions used dentistry. The aim this study was to assess compare mechanical tribological characteristics a bioactive resin, composite glass ionomer. Twenty specimens each material were divided into tw...

Background: The purpose of this study was to evaluate the effect in vitro long-term simulation oral conditions on bond strength PEEK CAD/CAM lingual retainers. Material and methods: sample consisted 12 retainers each composed 2 centrally perforated 3x4mm pads joined by a connector. They were treated 98% sulfuric acid for 1 minute then conditioned with Single Bond Universal bonded surface premol...

Utilizing ~1 W of microwave power, we achieved heating of PCR buffer with unprecedented temperature ramp rates that allowed for rapid thermocycling. Polymeric microdevices, chosen for their low cost and ease of fabrication, were constructed from polycarbonate (PC), poly(methyl-methacrylate) (PMMA), and polyester-toner (PeT) using fast, simple microfabrication via computer-aided milling for PC a...

introduction: this study investigated the sealing ability of three different adhesives in primary bovine teeth. methods: facial and lingual class v cavities were prepared half in enamel and half in cementum, in 48 bovine primary mandibular incisors and randomly divided into three groups and each group divided to two subgroups. the tested adhesives were xpbond (xp), clearfils3 bond (s3), and xen...

Objectives Acrylic resins are one of the most important denture base materials in dentistry due to their favourable mechanical and physical properties. The purpose of present study is to compare 4 available acrylic flexural strength properties before and after thermocycling. Methods Acrylic resin specimens of Meliodent (Heraeus Kulzer, Hanau, Germany), Vertex (Vertex-dental BV, Zeist, Netherla...

A computer numerical control (CNC) apparatus was used to perform droplet centrifugation, droplet DNA extraction, and rapid droplet thermocycling on a single superhydrophobic surface and a multi-chambered PCB heater. Droplets were manipulated using "wire-guided" method (a pipette tip was used in this study). This methodology can be easily adapted to existing commercial robotic pipetting system, ...

PURPOSE To evaluate if bovine enamel and dentin are appropriate substitutes for the respective human hard tooth tissues to test shear bond strength (SBS) and fracture analysis. MATERIALS AND METHODS 80 sound and caries-free human erupted third molars and 80 freshly extracted bovine permanent central incisors (10 specimens for each group) were used to investigate enamel and dentine adhesion of...