Accredited testing of products
NIOM delivers high-quality, accurate and independent results using established methods. Our experienced staff will also set up test designs customized to your specifications and needs.
NIOM has 50 years’ experience in the field of dental biomaterials. Our interdisciplinary expertise also applies to medical biomaterials, such as cardiac and orthopedic implants and surgical instruments.
NIOM is accredited for quality testing of dental materials and holds accreditation for a broad range of physical, mechanical and chemical test methods. NIOM maintains accreditation according to ISO 17025 General requirements for the competence of testing and calibration laboratories with the Norwegian Accreditation. This ensures independent, reliable and high-quality test results.
Independent testing according to an appropriate ISO standard is a means to determine compliance with statutory requirements. NIOM’s test reports are recognized by regulatory agencies worldwide and as evidence for compliance with the EU Medical Device Directive and US FDA regulatory requirements.
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ISO 3107:2011 Dentistry – Zinc oxide/eugenol and zinc oxide/non-eugenol cements *
7.2 Determination of setting time *
7.3 Determination of compressive strength *
7.4 Determination of film thickness *
7.5 Determination of acid-soluble arsenic fraction *
ISO 4049:2019 Dentistry – Polymer-based restorative materials
7.5 Measurement of film thickness of luting materials *
7.6 Working time, Class 1 and Class 3 restorative materials, excluding luting materials *
7.7 Working time, Class 1 and Class 3 luting materials *
7.8 Setting time, Class 1 and Class 3 materials *
7.9 Sensitivity to light, Class 2 materials
7.10 Depth of cure, Class 2 materials excluding luting materials
7.11 Flexural strength
7.12 Water sorption and solubility
7.13 Shade and colour stability after irradiation and water sorption
7.14 Radio-opacity *
ISO 4823:2015 Dentistry – Elastomeric impression materials *
7.1 Mixing time *
7.2 Consistency *
7.3 Working-time *
7.4 Detail reproduction *
7.5 Linear dimensional change *
7.6 Compatibility with gypsum *
7.7 Elastic recovery *
7.8 Strain-in-compression *
ISO 6872:2015 Dentistry – Ceramic materials
7.2 Radioactivity of dental ceramic*
7.3.1 Three-point and four-point bending tests
7.3.2 Biaxial flexure test (piston-on-three-ball test)
7.4 Linear thermal expansion coefficient
7.5 Glass transition temperature
7.6 Chemical solubility
ISO 6874:2015 Dentistry – Polymer-based pit and fissure sealants *
6.4 Working time, Class 1 sealant *
6.5 Setting time, Class 1 sealant *
6.6 Depth of cure, Class 2 sealant *
ISO 6876:2012 Dentistry – Root canal sealing materials *
5.2 Flow *
5.3 Working time *
5.4 Setting time *
5.5 Film thickness *
5.6 Solubility *
5.7 Radio-opacity *
ISO 9693: 2019 Dentistry – Compatibility testing for metal-ceramic and ceramic-ceramic systems.
6.1 Linear thermal expansion
6.1.1 Test method for metallic materials shall be in accordance with ISO 22674: 2016, 8.13.
6.1.2 Test method for ceramic materials shall be in accordance with ISO 6872: 2015, 7.4.
6.2 Glass transition temperature (in accordance with ISO 6872:2015)
6.3 Youngs modules (in accordance with ISO 22674:2016, 5.5.)
6.4 De-bonding/crack initiation test
6.5 Thermal shock testing *
ISO 9917-1:2007 Dentistry – Water based cements Part 1: Powder/liquid acid-base cements *
Annex A Determination of net setting time *
Annex C Determination of film thickness (luting cements only) *
Annex D Determination of compressive strength *
Annex E Determination of acid erosion *
Annex F Determination of optical properties
(polyalkenoate restorative cements only) *
Annex G Determination of acid-soluble arsenic and lead contents *
Annex H Determination of radio-opacity *
ISO 9917-2:2017 Dentistry – Water-based cements Part 2: Resin-modified cements
Annex A Determination of working time and setting time *
Annex B Determination of film thickness – Luting materials only *
Annex C Determination of flexural strength
Annex D Determination of radio-opacity *
Annex E Determination of shade and colour stability
– Restorative (except for tooth core build-up) and luting materials only
ISO 10477:2020 Dentistry – Polymer-based crown and veneering materials
7.3 Depth of cure *
7.4 Surface finish
7.5 Flexural strength
7.6 Bond strength *
7.7 Water sorption and solubility
7.8 Shade consistency and colour stability
ISO 10993-5:2009 Biological evaluation of medical devices* Part 5: Tests for in vitro cytotoxicity
8.4.1 Agar diffusion *
8.4.2 Filter diffusion *
Annex C MTT Cytotoxicity test *
ISO 20795-1:2013 Dentistry – Base polymers Part 1: Denture base polymers
5.2.2 Surface characteristics
8.2 Packing plasticity
8.3 Colour
8.4 Colour stability
8.5.1 Polishability
8.5.2 Translucency
8.5.3 Freedom from porosity, ultimate flexural strength, and flexural modulus
8.6 Fracture toughness with a modified bending test *
8.7 Bonding to synthetic polymer teeth
8.8 Residual methyl methacrylate monomer *
8.9 Water sorption and solubility
ISO 20795-2:2013 Dentistry – Base polymers Part 2: Orthodontic base polymers
5.2.2 Surface characteristics
8.2 Colour
8.3 Polishability, freedom from porosity, ultimate flexural strength, and flexural modulus
8.4 Fracture toughness with a modified bending test *
8.5 Residual methyl methacrylate monomer *
8.6 Plasticiser(s), where applicable *
8.7 Water sorption and solubility
ISO 21563:2013 Dentistry – Hydrocolloid impression materials *
7.1 Working time test (alginate materials only) *
7.2 Initial setting time test (alginate impression materials only) *
7.3 Detail reproduction test before and after specimen disinfection *
7.4 Compatibility with gypsum test *
7.5 Elastic recovery test *
7.6 Strain-in-compression test *
7.7 Tear strength test *
7.8 Linear dimensional change test
(Type 3A agar materials with companion alginate only) *
7.9 Tensile bond strength test
(Type 3A agar/companion alginate material specimen only) *
ISO 22112:2017 Dentistry – Artificial teeth for dental prostheses
7.2 Dimensions of teeth
7.3 Comparison with shade guide
7.5 Surface finish of polymer teeth
7.7 Porosity of polymer teeth and other defects
7.11 Bonding of polymer teeth to denture-base polymers
7.12 Resistance to blanching, distortion and crazing of polymer teeth
7.13 Colour stability of polymer teeth
7.14 Dimensional stability of polymer teeth
ISO 22674:2016 Dentistry – Metallic materials for fixed and removable restorations and appliances
8.2 Chemical composition
8.4 Proof stress of 0,2 % non-proportional extension
8.5 Percentage elongation after fracture
8.8 Density
8.9 Corrosion resistance by the static immersion procedure of ISO 10271:2011
8.11 Sulfide tarnish test (static immersion) *
8.12 Solidus and liquidus temperatures (dental casting alloys) or melting point (commercially pure metals) *
8.13 Linear thermal expansion
ISO 24234:2015 Dentistry – Dental amalgam *
6.1 Chemical composition and purity of the dental amalgam alloy
6.2 Foreign material and large particles in the dental amalgam alloy powder *
6.3 Determination of the accuracy and variability of pre-proportioned masses*
6.4 Preparation of test-pieces to determine compliance with the requirements for creep,
dimensional change during hardening, and compressive strength *
6.5 Determination of creep *
6.6 Determination of dimensional change during hardening *
6.7 Determination of compressive strength *
6.8 Appearance of the mixed dental amalgam before setting *
ISO 29022:2013 Dentistry – Adhesion – Notched-edge shear bond strength test*
7 Notched-edge shear test*
NIOM also provides non-standard testing and evaluations.
* Not accredited