NIOM aims to be the premier choice for testing of biomaterials. NIOM is accredited for quality testing of dental materials and holds accreditation for a broad range of physical, mechanical and chemical test methods, see list below. NIOM maintains accreditation according to ISO 17025 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 recognised by regulatory agencies worldwide and as evidence for compliance with regulatory requirements set by US FDA and EU Medical Device Regulation.
NIOM delivers high-quality, accurate and independent results using established methods. NIOM has more than 50 years’ experience in the field of dental biomaterials and our interdisciplinary expertise applies equally well to medical biomaterials.
Customised testing
NIOM offers customised testing according to client specifications and needs and we have competence and equipment covering a wide range of fields:
• Mechanical testing, static and dynamic
• Chemical analysis, composition and elution
• Toxicological evaluation, Eurotox certified toxicologist
• Manufacturing of test blocks and jigs in our workshop.
Do you have any questions?
Hilde M. Kopperud
Head of laboratory
Phone: +47 67 51 22 00
Email: h.b.m.kopperud@niom.no
ISO 3107:2011 Dentistry – Zinc oxide/eugenol and zinc oxide/non-eugenol cements
7.2
7.3
7.4
7.5
Determination of setting time *
Determination of compressive strength *
Determination of film thickness *
Determination of acid-soluble arsenic fraction *
ISO 4049:2019 Dentistry – Polymer-based restorative materials
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
Measurement of film thickness of luting materials *
Working time, Class 1 and Class 3 restorative materials, excluding luting materials *
Working time, Class 1 and Class 3 luting materials *
Setting time, Class 1 and Class 3 materials *
Sensitivity to light, Class 2 materials
Depth of cure, Class 2 materials excluding luting materials
Flexural strength
Water sorption and solubility
Shade and colour stability after irradiation and water sorption
Radio-opacity *
ISO 4823:2015 Dentistry – Elastomeric impression materials *
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
Mixing time *
Consistency *
Working-time *
Detail reproduction *
Linear dimensional change *
Compatibility with gypsum *
Elastic recovery *
Strain-in-compression *
ISO 6872:2015 Dentistry – Ceramic materials
7.2
7.3.1
7.3.2
7.4
7.5
7.6
Radioactivity of dental ceramic*
Three-point and four-point bending tests
Biaxial flexure test (piston-on-three-ball test)
Linear thermal expansion coefficient
Glass transition temperature
Chemical solubility
ISO 6874:2015 Dentistry – Polymer-based pit and fissure sealants *
6.4
6.5
6.6
Working time, Class 1 sealant *
Setting time, Class 1 sealant *
Depth of cure, Class 2 sealant *
ISO 6876:2012 Dentistry – Root canal sealing materials *
5.2
5.3
5.4
5.5
5.6
5.7
Flow *
Working time *
Setting time *
Film thickness *
Solubility *
Radio-opacity *
ISO 9693: 2019 Dentistry – Compatibility testing for metal-ceramic and ceramic-ceramic systems
6.1
6.1.1
6.1.2
6.2
6.3
6.4
6.5
Linear thermal expansion
Test method for metallic materials shall be in accordance with ISO 22674: 2016, 8.13.
Test method for ceramic materials shall be in accordance with ISO 6872: 2015, 7.4.
Glass transition temperature (in accordance with ISO 6872:2015)
Youngs modules (in accordance with ISO 22674:2016, 5.5.)
De-bonding/crack initiation test
Thermal shock testing *
ISO 9917-1:2007 Dentistry – Water based cements Part 1: Powder/liquid acid-base cements *
Annex A
Annex C
Annex D
Annex E
Annex F
Annex G
Annex H
Determination of net setting time *
Determination of film thickness (luting cements only) *
Determination of compressive strength *
Determination of acid erosion *
Determination of optical properties (polyalkenoate restorative cements only) *
Determination of acid-soluble arsenic and lead contents *
Determination of radio-opacity *
ISO 9917-2:2017 Dentistry – Water-based cements Part 2: Resin-modified cements
Annex A
Annex B
Annex C
Annex D
Annex E
Determination of working time and setting time *
Determination of film thickness – Luting materials only *
Determination of flexural strength
Determination of radio-opacity *
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
7.4
7.5
7.6
7.7
7.8
Depth of cure *
Surface finish
Flexural strength
Bond strength *
Water sorption and solubility
Shade consistency and colour stability
ISO 10993-5:2009 Biological evaluation of medical devices* Part 5: Tests for in vitro cytotoxicity
8.4.1
8.4.2
Annex C
Agar diffusion *
Filter diffusion *
MTT Cytotoxicity test *
ISO 20795-1:2013 Dentistry – Base polymers Part 1: Denture base polymers
5.2.2
8.2
8.3
8.4
8.5.1
8.5.2
8.5.3
8.6
8.7
8.8
8.9
Surface characteristics
Packing plasticity
Colour
Colour stability
Polishability
Translucency
Freedom from porosity, ultimate flexural strength, and flexural modulus
Fracture toughness with a modified bending test *
Bonding to synthetic polymer teeth
Residual methyl methacrylate monomer *
Water sorption and solubility
ISO 20795-2:2013 Dentistry – Base polymers Part 2: Orthodontic base polymers
5.2.2
8.2
8.3
8.4
8.5
8.6
8.7
Surface characteristics
Colour
Polishability, freedom from porosity, ultimate flexural strength, and flexural modulus
Fracture toughness with a modified bending test *
Residual methyl methacrylate monomer *
Plasticiser(s), where applicable *
Water sorption and solubility
ISO 21563:2013 Dentistry – Hydrocolloid impression materials *
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
Working time test (alginate materials only) *
Initial setting time test (alginate impression materials only) *
Detail reproduction test before and after specimen disinfection *
Compatibility with gypsum test *
Elastic recovery test *
Strain-in-compression test *
Tear strength test *
Linear dimensional change test (Type 3A agar materials with companion alginate only) *
Tensile bond strength test (Type 3A agar/companion alginate material specimen only) *
ISO 22112:2017 Dentistry – Artificial teeth for dental prostheses
7.2
7.3
7.5
7.7
7.11
7.12
7.13
7.14
Dimensions of teeth
Comparison with shade guide
Surface finish of polymer teeth
Porosity of polymer teeth and other defects
Bonding of polymer teeth to denture-base polymers
Resistance to blanching, distortion and crazing of polymer teeth
Colour stability of polymer teeth
Dimensional stability of polymer teeth
ISO 22674:2016 Dentistry – Metallic materials for fixed and removable restorations and appliances
8.2
8.4
8.5
8.8
8.9
8.11
8.12
8.13
Chemical composition
Proof stress of 0,2 % non-proportional extension
Percentage elongation after fracture
Density
Corrosion resistance by the static immersion procedure of ISO 10271:2011
Sulfide tarnish test (static immersion) *
Solidus and liquidus temperatures (dental casting alloys) or melting point (commercially pure metals) *
Linear thermal expansion
ISO 24234:2015 Dentistry – Dental amalgam *
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
Chemical composition and purity of the dental amalgam alloy
Foreign material and large particles in the dental amalgam alloy powder *
Determination of the accuracy and variability of pre-proportioned masses*
Preparation of test-pieces to determine compliance with the requirements for creep, dimensional change during hardening, and compressive strength *
Determination of creep *
Determination of dimensional change during hardening *
Determination of compressive strength *
Appearance of the mixed dental amalgam before setting *