Jon Einar Dahl

Managing Director Professor, dr. odont., DSc Phone: +47 67 51 22 00 Mobile: +47 90 69 18 99

Prior to being CEO at NIOM, Jon has been professor at the Dental faculty at University of Oslo, Laboratory manager and Senior scientist at NIOM. He frequently participates in scientific publications on international level.

Newsletters

Cobalt in dental devices

January 23rd 2023

In Memoriam professor Nils J. Jacobsen 1931-2021

April 22nd 2021

Summer greetings

June 16th 2020

Faulty bond strength measurements?

February 26th 2020

NIOMs first year with NORCE

December 19th 2019

Marginal gap of digitally made dental single crowns

May 14th 2019

How can dental materials be made better?

February 28th 2019

Peroxide-free tooth whitening

January 20th 2019

Gap settings matters

January 11th 2018

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

December 14th 2017

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

November 15th 2017

Toxicity of monomers

January 19th 2017

NIOM at Nordic annual dental meetings 2016

December 22nd 2016

Silanising agents promote composite repair

April 22nd 2016

Materials for indirect restorations

December 24th 2015

Glass-ionomer cements are also technique-sensitive materials

March 30th 2014

Publications NIOM

Shear bond strength of resin bonded zirconia and lithium disilicate – effect of surface treatment of ceramics and dentin

February 17th 2022

Áhrif sílans og ljósherðingar á viðgerðarstyrk plastblendis

October 28th 2021

The influence of the resin- based cement layer on ceramic-dentin bond strength

June 3rd 2021

Áhrif þykktar bindilags og yfirborðsmeðferða á viðgerðarstyrk plastblendis

May 25th 2021

Dentin to dentin adhesion using combinations of resin cements and adhesives from different manufacturers – a novel approach

August 11th 2020

Effect of thermal cycling on temperature changes and bond strength in different test specimens

February 26th 2020

Bleaching of the Discolored Traumatized Tooth

February 6th 2019

The dental monomer HEMA causes proteome changes in human THP‐1 monocytes

December 30th 2018

Peroxide-free tooth whitening products

December 3rd 2018

Digital evaluation of marginal and internal fit of single-crown fixed dental prostheses

October 11th 2018

Optimizing quality and safety of dental materials

September 20th 2018

Internal fit of three-unit fixed dental prostheses produced by computeraided design/computer-aided manufacturing and the lost-wax metal casting technique assessed using the triple-scan protocol

November 27th 2017

Effect of curing and silanizing on composite repair bond strength using an improved micro-tensile test method

June 19th 2017

Relation between In Vitro Toxicity and the Thiol-Reactivity of Methacrylates in Resin-Based Biomaterials

March 10th 2017

NIOM – Fortyfive years of Nordic dentistry

December 15th 2016

Internal fit of single crowns produced by CAD/CAM and lost-wax metal casting technique assessed by the triple-scan protocol

September 28th 2016

Proteome Changes Indicate Oxidative Stress and Protein Damage after Methacrylate Exposure in Human Monocyte Cell Line

May 2nd 2016

Effect of Components in Resin-Based Dental Restoratives on Protein-S-Glutathionylation

March 13th 2016

Exposure to Dental Monomer Hydroxyethyl Methacrylate (HEMA) Induces Increased Transcription of Genes Involved in Oxidative Stress Responses

March 13th 2016

Toxicity of plast materials

January 11th 2016

Silanising agents promote resin-composite repair

October 9th 2015

In vitro element release and biological aspects of base-metal alloys for metal-ceramic applications

September 29th 2015

Cements for gold inlays

May 12th 2015

Effect of different surface treatments and adhesives on repair bond strength of resin composites after one and 12 months of storage using an improved microtensile test method.

September 29th 2014

Sub-lethal Concentrations of HEMA alter Protein Expression in Human Monocytes

September 20th 2014

TEGDMA and filler particles from dental composites additively attentuate LPS-induced cytokine release from the macrophage cell line RAW 264.7

March 11th 2014

Glass ionomer – a suitable restorative material in deciduous teeth?

January 7th 2014

Summary of: Side effects of external tooth bleaching: a multi-centre practice-based prospective study.

November 8th 2013

Hyperspectral imaging/reflectance spectroscopy of mouse oral tissue exposed to high intensity blue light.

September 6th 2013

Osteoporosis and periodontal disease

May 7th 2013

Dental monomers inhibit LPS-induced cytokine release from the macrophage cell line RAW264.7

February 4th 2013

The development of T cell-dominated inflammatory responses induced by sodium lauryl sulphate in mouse oral mucosa

June 6th 2012

Biotransformation enzymes and lung cell response to 2-hydroxyethyl-methacrylate.

November 29th 2011

Skadelig innhold i skyllevæske og tannkremer?

November 10th 2011

Optical characterization of biomaterial/radiation-exposed oral mucosa by reflection spectroscopy

September 6th 2011

Role of bonding agents in the repair of composite resin restorations

August 22nd 2011

Health hazard from resin-modified glass ionomer materials in pediatric dentistry.

June 5th 2011

DNA damage, cell-cycle arrest and apoptosis induced in BEAS-2B cells by 2-hydroxyethyl methacrylate (HEMA).

April 11th 2011

Role of thiol-complex formation in 2-hydroxyethyl-methacrylate-induced toxicity in vitro

February 2nd 2011

Promotion of Adhesion Between Resin and Silica-coated Titanium by Silane Monomers and Formic Acid Catalyst

April 10th 2010

Titan för odontologiska applikationer. Biologiska aspekter

April 3rd 2010

Responses of the pulp–dentin organ to dental restorative biomaterials.

January 10th 2010

Slimhinneforandringer forårsaket av dentale materialer og optisk stråling

November 6th 2009

In vitro corrosion of self-engaging orthodontic brackets

November 3rd 2009

Effects of UV radiation and visible light on oral mucosa characterised by reflection spectroscopy

September 10th 2009

Fråga NIOM: Dagsläget för rotfyllning med adhesiv binding

April 10th 2009

Filler Particles Used in Dental Biomaterials Induce Production and Release of Inflammatory Mediators In Vitro

April 3rd 2009

In vivo and in vitro irritation testing of low concentrations of hydrofluoric acid

March 11th 2009

Bleking av tenner – lege artis?

March 10th 2009

In vitro efficacy and risk for adverse effects of light-assisted tooth bleaching

March 7th 2009

Corrosion of dental nickel-aluminum bronze with a minor gold content – mechanism and biological impact.

February 3rd 2009

Spør NIOM: Hvor står vi når det gjelder adhesive rotfyllinger?

December 10th 2008

Cytotoxicity of silica–glass fiber reinforced composites

September 10th 2008

The effects of EDTA and iodine-potassium iodide on the adhesion properties of root filling materials

May 29th 2008

Spør NIOM: Komposittfyllinger – suksess eller fiasko?

April 5th 2008

HEMA reduces cell proliferation and induces apoptosis in vitro.

January 24th 2008

Adverse patient reactions during orthodontic treatment with fixed appliances

December 10th 2007

Dentale plastmaterialer kan utløse toksiske responser i munnslimhinnen

November 10th 2007

Dentale plastmaterialer har potensial for å utløse toksisk reaksjoner

November 10th 2007

Potential of dental adhesives to induce mucosal irritation evaluated by the HET-CAM method

April 30th 2007

Tannbleking

March 15th 2007

Cytotoxicity of new resin-, calcium hydroxide- and silicone-based root canal sealers on fibroblasts derived from human gingiva and L929 cell lines

February 10th 2007

Apoptosis induced by the monomers HEMA and TEGDMA involves formation of ROS and differential activation of the MAP-kinases p38, JNK and ERK.

January 23rd 2007

Pattern of cell death after in vitro exposure to GDMA, TEGDMA, HEMA and two compomer extracts

July 29th 2006

Tannbleking med lys – science or fiction?

March 30th 2006

In vitro biocompatibility of denture relining materials

March 23rd 2006

Toxicity of endodontic filling materials

November 10th 2005

NIOM i endring. Nytt fra NIOM

November 1st 2005

Irritation and cytotoxic potential of denture adhesives.

September 22nd 2005

Physicochemical evaluation of silica-glass fiber reinforced polymers for prosthodontic applications

June 10th 2005

Spør NIOM: Tannbleking med lys – hvor står vi i dag?

March 26th 2005

Static immersion and irritation tests of dental metal-ceramic alloys.

February 1st 2005

Dentinbinding – forståelse for produktet er viktigst

November 22nd 2004

Adhesivsystem

September 18th 2004

In vitro cell death induced by irradiation and chemicals relevant for dental applications; dose-response and potentiation effects.

June 11th 2004

Periimplantitt – en ny folkesykdom?

April 19th 2004

Nytt og nyttig fra NIOM

April 19th 2004

Partialproteser – fortsatt aktuell og forsvarlig behandling

April 3rd 2004

Cytotoxicity of liquids and powders of chemically different dental materials evaluated using dimethylthiazol diphenyltetrazolium and neutral red tests.

February 1st 2003

Erosjoner – et økende problem

December 10th 2002

Kreft i munn, hode og hals

November 11th 2002

Diagnoser: Hvem har rett?

November 9th 2002

Tooth bleaching

November 8th 2002

Akuttbehandling – et populært tema

November 8th 2002

Se opp for lys fra herdelamper

March 29th 2002

Placement and replacement of restorations in primary teeth.

January 16th 2002

Cytotoxic effects of visible light-cured dental materials

October 19th 2001

Rat lung inflammatory responses after in vivo and in vitro exposure to various stone particles

September 20th 2001

Fyllingsterapi i Norge – materialvalg, holdbarhet og årsaker til revisjon

September 19th 2001

Valg av fyllingsmaterialer i offentlig tannpleie

August 20th 2001

Cytotoxicity of dental glass ionomers evaluated using dimethylthiazol diphenyltetrazolium and neutral red tests.

February 25th 2001

Corrosion and biocompatibility testing of palladium alloy castings.

January 17th 2001

PBL tannlegene kommer

December 18th 2000

Dentale biomaterialer: Vær kritisk til reklame

December 17th 2000

Reasons for replacement of restorations in permanent teeth in general dental practice

December 15th 2000

Symptomer og diagnose bestemmer behandlingen

December 6th 2000

Keramer – en utfordring

September 21st 2000

Cytotoxicity of dental alloys, metals, and ceramics assessed by millipore filter, agar overlay, and MTT tests

August 20th 2000

Age of restorations at replacement in permanent teeth in general dental practice

June 20th 2000

Kreftrisiko ved bruk av snus

May 30th 2000

Irritation test of tissue adhesives for facial prostheses.

April 20th 2000

Risk for spontaneous abortion among primiparous dental surgeons in Norway.

September 20th 1999

Dental workplace exposure and effect on fertility

June 25th 1999

Irritation of dental adhesive agents evaluated by the HET–CAM test

April 10th 1999