Evaluation of material suitability for nanoparticle-based coatings and further antimicrobial treatment

, , , , and | October 30th 2015

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Dental materials are easily colonized by bacteria, and microbial attack is the main cause of dental implant failure and periodontitis. The aim of this project was to formulate nanoparticle-based (NPsol) coatings that reduce bacterial adherence on materials used in dentistry. Pre-treatment of the surfaces with such coatings could create a time window that allows for killing of the surrounding bacteria prior to or shortly after adhesion. One option is to apply antimicrobial photodynamic therapy (aPDT).
The margin design and quality may jeopardize the ceramic crown strength

October 29th 2015

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Several studies have been performed in order to assess the effect of different preparation designs for all-ceramic crowns, but the results are ambiguous. Most trials have found no or little effect of different design of the cervical finish line. The new method for clinically relevant testing of all-ceramic crowns developed at NIOM and the University of Bergen in 2012, and published in Dental Materials in 2013, has now been applied to assess one essential parameter of margin design: the curvature of the cervical margin over the gingival papilla.
The effect of margin curvature on load at fracture of ceramic crowns

, , and | August 1st 2015

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The aim of this study was to use a clinically relevant test method to evaluate the effect of the curvature of the cervical crown margins on load at fracture
Mechanical properties

April 29th 2015

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Mechanical properties describe a material’s response when exposed to various mechanical impacts such as tension, pressure or deflection or even temperature change. As such they are crucial in evaluating the quality of a dental material or indeed any material.
Ceramic Crown Margin Curvatures’ Effect on Fracture Strength

, and | September 30th 2014

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Despite the high fracture strength of modern dental core ceramics, fracture is a common cause of failure in clinical trials. Fracture origins are typically in the crown margin in the appoximal region where the margin curves upwards. The scientific evidence for optimal marginal design of preparation is limited. The aim was to use a clinically relevant test method to evaluate the effect on strength of the cervical margin’s curvature of ceramic crowns.