Melt etching outperforms sandblasting -

For stronger and longer lasting dental crowns, a new NIOM study suggests that melt etching is better than sandblasting.

Open material 3D-printer improves testing -

3D-printers open up exciting new fields of research, treatment and testing. This makes one a natural acquisition for NIOM’s instrument park. Read more about which printer we chose, and why.

Snus dangers – and how to help -

New research shows that the easiest way to help and encourage patients to stop using snus is underutilized.

New tooth wear simulation device -

NIOM’s new mechanical masticator performs wear simulation of oral conditions.

Your guide to material selection -

Like it or not – regulatory issues affect the materials and devices offered to us on the European market.

Marginal gap of digitally made dental single crowns -

Icelandic dentists are well educated for diagnosis and treatment of dental erosion, but more emphasizes on causative factors are needed. These are the conclusions from a recent questionnaire study among dentists in Iceland.

Opinions and Treatment decisions for Dental Erosion -

Icelandic dentists are well educated for diagnosis and treatment of dental erosion, but more emphasizes on causative factors are needed. These are the conclusions from a recent questionnaire study among dentists in Iceland.

Residual stress in bench- and furnace-cooled porcelain-fused to zirconia appliances -

A new study of veneered zirconia shows that the magnitude of residual stresses can only be estimated reliably from the manufacturers’ thermal expansion coefficients if the veneered prosthesis is cooled slowly after the final firing.

How can dental materials be made better? -

Future resin-based dental materials must combat the reasons current materials fail, mainly secondary caries and fracture, but still be easy for the dentist to use and safe for the patient.

Colour assessment. How good are you? -

Finding the best colour match for your restorations, crowns and bridges, is often frustrating, but do not despair, as training and practice makes you better and more confident.

Reason for loosening of ceramic restorations -

The resin cement forms the weakest link for a ceramic restoration. This was found in an investigation of the de-bonding of resin cementation of zirconia or lithium di-silicate ceramic to bovine dentin.

Peroxide-free tooth whitening -

The peroxide-free tooth whitening products are less effective than those based on peroxides and the effect is only transitory. Both peroxide-free and peroxide containing products gave an initial lightening of the tooth color. However, the effects of peroxide-free products were only transitory.

Digital dentistry -

Digital manufacturing using intraoral scanners appears to provide equivalent fit compared to conventional technique for smaller prosthetic constructions. Milled composites have a less toxic potential compared to traditional light cured directly placed composite restorations.

Webinar: Dental ceramics -

Did you miss our webinar on December 5th? Or would you like to see it again?

Dental Erosion -

A new standardized mouse model is established for studying extrinsic dental erosion.

Dementia. Are dentists protected? -

Dementia is a common term for diseases of the brain expressed as the loss of cognitive abilities and activities of daily living. The number of persons with dementia is increasing due to the aging population in the developed countries, and the risk of dementia is higher in the very old age groups.

Disrupting the white matter -

“There are more animals living in the scum on the teeth in a man`s mouth, than there are men in a whole kingdom”.

New BPA-free monomer for dental materials -

NIOM guest-researcher Jingwei He has successfully synthesized a BPA-free monomer, which has been evaluated for experimental materials. The conclusion is that the new monomer has potential to be used in commercial dental composites.

Safe and long-lasting restorations -

Our patients want safe restorations that retain their function for as long as possible. Preventing recurrent caries and improved handling are the best approaches to optimize quality and safety of dental materials, a recent article from NIOM scientists concluded.

NIOM helps you stay ahead -

In October and November, NIOM is present at the Dental Conventions in Norway, Iceland, Sweden and Finland. Please stop by our stand for a chat!

Are LED Lights a Hazard to Human Health? -

There is no evidence that the general public is at risk of direct adverse health effects from Light Emitting Diodes (LEDs) when the lights (lamps for lighting and displays) are in normal use, the European Commission stated in a recent published Opinion. The Scienti c Committee on Health, Environmental and Emerging Risks (SCHEER), having a NIOM scientist as expert member, authored the Opinion.

Northern Lights comes to Oslo -

NIOM was host and local organiser for the sixth annual Northern Lights International Conference in Oslo on 30th and 31st July.

Safe and sufficient light curing of dental materials -

Light curing can be a process that does not receive the attention it requires, but there are simple ways to optimise the light curing procedure.

TMA offers valuable insight of materials properties -

Thermomechanical analysis, TMA, can provide valuable information on materials which influence on production conditions for dental restorations that is difficult to obtain by other analytical techniques.

NIOM investigates: do modern dental materials release BPA? -

BPA has been reported to leach from dental materials, however, there is currently little reason for concern about adverse health outcomes due to exposure from dental materials alone.

Vacant positions as visiting scientist at NIOM during 2019 -

Positions as visiting scientist in the field of dental biomaterials research are offered at the Nordic Institute of Dental Materials, NIOM, in Oslo, Norway. PhD candidates and young scientists are especially invited to apply.

Gold inlays are a good treatment option for posterior teeth -

These are the conclusions from a recent retrospective, practice-based study conducted by Institute of Clinical Dentistry, University of Oslo and NIOM.

Killing biofilm – mission impossible? -

What are the strategies and methods you as a clinician can use to minimize or manage this problem of caries and other infectious diseases in the oral cavity? Attend this webinar and learn more about it!

Restorative materials for severely affected primary molars -

Reduced follow-ups and increased cost effectiveness were best obtained using preformed metal crowns (PMCs) in children with severely affected primary molars at high caries risk. This is the conclusion of a collaboration study between the City of Helsinki and NIOM.

NIOM adds Shore hardness and bond strength characterization to its test repertoire -

NIOM has added two new tests to their repertoire. The new test methods are the Shore hardness test for lining material, and the bond strength test for lining on denture base materials.

Be proactive: pointers for safe and effective physical protection in the clinic -

There is no doubt that the most serious health risk to dental staff is due to infection by microorganisms such as viruses and bacteria. In addition there are other hazards that pose a health risk and require physical protection.

Concentration of eluted monomers from the composites, in microgram per square centimeter surface area.
Toxicity testing of composites -

None of the tested composite materials was deemed less safe to use than the others, a recent report from NIOM concluded. The release of monomers from the different composites was similar. Initial cytotoxicity screening of extracts of the materials indicated some differences between the products. However, further evaluations could not verify a cytotoxic potential.

CAD/CAM-produced three-unit bridges.
Gap settings matters -

In a recent investigation from University of Oslo and NIOM, none of the three-unit bridges produced with different CAD/CAM systems attained the nominal settings for the cementation gap. The measured gaps were up to twice the sizes set in the CAD-software.

NIOM webinar: Recommended use of fluoride -

In this 20 min webinar NIOM Senior Scientist Aida Mulic will present the recommendations for use of fluoride to combat the most common oral diseases, dental caries and dental erosions.

Daily use of antimicrobials? -

Scientist at NIOM in collaboration with scientists from the University of Oslo, contributed with lectures at the annual Norwegian Dental Association Convention.

Use of fluoride as caries prophylactic does not pose a health risk -

Fluoride skepticism “FluUro”. The use of fluoride as caries prophylactic does not pose a health risk, Professor Jon E. Dahl, stated at the annual convention for the Norwegian dental association. He discussed the kinetics and the general toxicity of applied fluoride.

Dental erosive wear – a growing problem in the Nordic countries -

The data analysed in the study indicated both wide prevalence and high severity of dental erosion among adolescents. The authors stress the importance of information, early and effective diagnostics and implementation of prevention strategies.

Improved micro-tensile strength test reveals key to successful repair of restorations -

A more reliable and less time-consuming test method to evaluate the micro-tensile strength of the repair bond between old and new composites has recently been published. The improved test method is based on studies carried out previously at NIOM.

NIOM scientists develop new etching technique for zirconia ceramics – improves adhesion of resin cements -

NIOM scientists have developed a surface etching technique that improves adhesion between resin cement and zirconia. This new method called Melt Etching is based on melting of fluoride compounds, and can be readily adapted by dental technicians.

Standardization and patient safety – ensuring that dental materials are safe and effective -

When considering patient safety, the quality and adequate function of a material or device is given by its mechanical strength, chemical stability and biocompatibility. Standards allow for ease of trade, since the product or service is well described, so that the manufacturer and the consumer have a common understanding of its expected performance.