WELCOME TO NIOM
Nordic Institute of Dental Materials (NIOM) works to ensure that dental biomaterials are safe and effective. We undertake research, participate in standardization and provide clinical relevant advice to the dental health services and health authorities in the Nordic countries. NIOM offers research-based consultancy and accredited testing according to international standards. Our independent test laboratory delivers accurate and independent data accepted for third-party evaluations of dental materials and instruments.NEWS
Scientist returns to NIOM
NIOM is pleased to announce the return of Simen E. Kopperud, as Senior Scientist, after a two years absence
New material expert at NIOM
We are proud to announce that PhD-fellow Amund Ruud has joined NIOM effective April.
New Communications Manager at NIOM
NIOM is happy to announce Siv Palm as its new communications manager, effective April
NEWSLETTERS
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.
read moreHow 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.
read moreReason 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.
read moreResidual 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.
read moreColour 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.
read morePeroxide-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.
read moreNEWSLETTERS
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.
read more
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.
read more
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.
read more
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.
read more
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.
read more
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.
read morePUBLICATIONS
Prevention of snus use: Attitudes and activities in the Public Dental Service in the south‐eastern part of Norway
Dental health care professionals have the opportunity to play a key role in tobacco prevention and cessation among adolescents. Snus use has increased in Norway, especially in the age group 16–24, whereas there has been a decline in smoking. This study investigated attitudes and activities related to snus prevention among dental health care professionals working in the Public Dental Service (PDS) in south‐eastern Norway.
Effect of methacrylated chitosan incorporated in experimental composite and adhesive on mechanical properties and biofilm formation
The results of this study show that CH-MA (CH-MA) may be incorporated into a composite and into an adhesive to reduce biofilm formation on their surfaces. The mechanical properties of the composite were challenged, but flexural strength measurements still met the requirement set in ISO 4049, whereas no differences were observed for the bonding properties of the adhesives.
Thermal induced deflection of a porcelain–zirconia bilayer: Influence of cooling rate
To determine the thermal expansion of a porcelain (VM9) and tetragonal zirconia (Y-TZP) as well as the deflection upon re-heating and cooling of a bilayer fabricated from these two materials after slow and rapid cooling during initial fabrication.
LABORATORIES
NIOM TESTED
NIOM has established a programme for the quality evaluation of a number of dental products. The evaluation is based on testing of the products according to methods in relevant ISO and other standards, or according to other well-established and documented test methods. Products fulfilling the set requirements are granted permission to use the NIOM TESTED quality seal. The NIOM TESTED quality seal confirms that the product meets the requirements specified by NIOM.