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Bilde av Ørtengren, Ulf Thore
Bilde av Ørtengren, Ulf Thore
Professor Biomaterials Department of Clinical Dentistry ulf.ortengren@uit.no +4777649120 Tromsø

Ulf Thore Ørtengren

Job description

Responsible for education and research concerning biomaterials used in dentistry and the preclinical education.

Head for the reseach group "Biomaterials used in dentistry and medicine" 

  • Mathieu Mouhat, Lina Stangvaltaite-Mouhat, James Mercer, Bo Wold Nilsen, Ulf Örtengren :
    Light-curing units used in dentistry: Effect of their characteristics on temperature development in teeth
    Dental materials journal 2021 ARKIV / DOI
  • Ulf Örtengren, Arne Hensten :
    Nytt regelverk för medicintekniska produkter i tandvården
    Tandläkartidningen 2021 ARKIV
  • Ulf Thore Ørtengren, Anna Lehrkinder, Aram Safarloo, Jasmine Axelsson, Peter Lingström :
    Opportunities for caries prevention using an ion-releasing coating material: a randomised clinical study
    Odontology : official journal of The Society of the Nippon Dental University 2020 ARKIV / DOI
  • Aksel Wikant, Ulf Wiel Gedde, Magnus Hakeberg, Ulf Thore Ørtengren :
    Suboptimal light curing and direct exposure to water of two contemporary composites: degree of conversion, sorption, solubility, and Knoop hardness
    Acta Odontologica Scandinavica 2020 ARKIV / DOI
  • Bo Wold Nilsen, Mathieu Mouhat, Torbjørn Haukland, Ulf Thore Ørtengren, James Mercer :
    Heat Development in the Pulp Chamber During Curing Process of Resin-Based Composite Using Multi-Wave LED Light Curing Unit
    Clinical, Cosmetic and Investigational Dentistry 2020 ARKIV / DOI
  • Bo Wold Nilsen, Einar Jensen, Ulf Thore Ørtengren, Berit Bang, Vibeke Barman Michelsen :
    Airborne exposure to gaseous and particle-associated organic substances in resin-based dental materials during restorative procedures
    European Journal of Oral Sciences 2019 ARKIV / DOI
  • Keisuke Nakamura, Midori Shirato, Taichi Tenkumo, Taro Kanno, Anna Westerlund, Ulf Thore Ørtengren et al.:
    Hydroxyl radicals generated by hydrogen peroxide photolysis recondition biofilm-contaminated titanium surfaces for subsequent osteoblastic cell proliferation
    Scientific Reports 2019 ARKIV / DOI
  • Keisuke Nakamura, Shuhei Ankyu, Fritjof Nilsson, Taro Kanno, Yoshimi Niwano, Per Vult von Steyern et al.:
    Critical considerations on load-to-failure test for monolithic zirconia molar crowns
    Journal of The Mechanical Behavior of Biomedical Materials 2018 DOI
  • Kosuke Nakazawa, Keisuke Nakamura, Akio Harada, Midori Shirato, Ryoichi Inagaki, Ulf Thore Ørtengren et al.:
    Surface properties of dental zirconia ceramics affected by ultrasonic scaling and low-temperature degradation
    PLOS ONE 2018 ARKIV / DOI
  • Shuhei Ankyu, Keisuke Nakamura, Akio Harada, Ryoichi Inagaki, Yusuke Katsuda, Taro Kanno et al.:
    Influence of microscale expansion and contraction caused by thermal and mechanical fatigue on retentive strength of CAD/CAM-generated resin-based composite crowns
    Journal of The Mechanical Behavior of Biomedical Materials 2018 DOI
  • Bo Wold Nilsen, Jaione Simon-Santamaria, Ulf Thore Ørtengren, Einar Jensen, Jack-Ansgar Bruun, Vibeke Barman Michelsen et al.:
    Dose- and time-dependent effects of triethylene glycol dimethacrylate on the proteome of human THP-1 monocytes
    European Journal of Oral Sciences 2018 ARKIV / DOI
  • Jan Tore Samuelsen, Vibeke Barman Michelsen, Jack-Ansgar Bruun, Jon Einar Dahl, Einar Jensen, Ulf Thore Ørtengren :
    The dental monomer HEMA causes proteome changes in human THP-1 monocytes
    Journal of Biomedical Materials Research. Part A 2018 DOI
  • Keisuke Nakamura, Midori Shirato, Taro Kanno, Peter Lingström, Ulf Thore Ørtengren, Yoshimi Niwano :
    Photo-irradiated caffeic acid exhibits antimicrobial activity against Streptococcus mutans biofilms via hydroxyl radical formation
    Scientific Reports 2017 ARKIV / DOI
  • Midori Shirato, Keisuke Nakamura, Taro Kanno, Peter Lingström, Yoshimi Niwano, Ulf Thore Ørtengren :
    Time-kill kinetic analysis of antimicrobial chemotherapy based on hydrogen peroxide photolysis against Streptococcus mutans biofilm
    Journal of Photochemistry and Photobiology. B: Biology 2017 DOI
  • Bo Wold Nilsen, Einar Jensen, Ulf Thore Ørtengren, Vibeke Barman Michelsen :
    Analysis of organic components in resin-modified pulp capping materials: critical considerations
    European Journal of Oral Sciences 2017 DOI
  • Mathieu Mouhat, James Mercer, Lina Stangvaltaite, Ulf Thore Ørtengren :
    Light-curing units used in dentistry: factors associated with heat development – potential risk for patients
    Clinical Oral Investigations 2016 ARKIV / FULLTEKST / DOI
  • Keisuke Nakamura, Mathieu Mouhat, John Magnus Nergård, Solveig Jenssen Lægreid, Taro Kanno, Percy Milleding et al.:
    Effect of cements on fracture resistance of monolithic zirconia crowns
    Acta Biomaterialia Odontologica Scandinavica 2016 SAMMENDRAG / FULLTEKST / ARKIV / DOI
  • Keisuke Nakamura, Akio Harada, M. Ono, H. Shibasaki, Taro Kanno, Yoshimi Niwano et al.:
    Effect of low-temperature degradation on the mechanical and microstructural properties of tooth-colored 3Y-TZP ceramics
    Journal of The Mechanical Behavior of Biomedical Materials 2016 FULLTEKST / SAMMENDRAG / DOI
  • Bo Wold Nilsen, Ulf Thore Ørtengren, Jaione Simon-Santamaria, Karen Kristine Sørensen, Vibeke Barman Michelsen :
    Methods and terminology used in cell-culture studies of low-dose effects of matrix constituents of polymer resin-based dental materials
    European Journal of Oral Sciences 2016 DOI
  • Kari-Mette Andersen, Anne Karin Kristoffersen, André Ingebretsen, Katharina Johnsen Vikholt, Ulf Thore Ørtengren, Ingar Olsen et al.:
    Diversity and anti-fungal susceptibility of Norwegian Candida glabrata clinical isolates
    Journal of Oral Microbiology 2016 SAMMENDRAG / ARKIV / DOI
  • Shuhei Ankyu, Keisuke Nakamura, Akio Harada, Guang Hong, Taro Kanno, Yoshimi Niwano et al.:
    Fatigue analysis of computer-aided design/computer-aided manufacturing resin-based composite vs. lithium disilicate glass-ceramic
    European Journal of Oral Sciences 2016 SAMMENDRAG / DOI
  • Keisuke Nakamura, Shirato Midori, Taro Kanno, Ulf Thore Ørtengren, Peter Lingstrom, Niwano Yoshimi :
    Antimicrobial activity of hydroxyl radicals generated by hydrogen peroxide photolysis against Streptococcus mutans biofilm
    International Journal of Antimicrobial Agents 2016 FULLTEKST / DOI
  • Keisuke Nakamura, Akio Harada, Taro Kanno, R. Inagaki, Yoshimi Niwano, Percy Milleding et al.:
    The influence of low-temperature degradation and cyclic loading on the fracture resistance of monolithic zirconia molar crowns
    Journal of The Mechanical Behavior of Biomedical Materials 2015 FULLTEKST / SAMMENDRAG / DOI
  • Keisuke Nakamura, Yusuke Katsuda, Shuhei Ankyu, Akio Harada, Taichi Tenkumo, Taro Kanno et al.:
    Cutting efficiency of diamond burs operated with electric high-speed dental handpiece on zirconia
    European Journal of Oral Sciences 2015 FULLTEKST / SAMMENDRAG / DOI
  • Keisuke Nakamura, A. Harada, R. Inagaki, Taro Kanno, Y. Niwano, Percy Milleding et al.:
    Fracture resistance of monolithic zirconia molar crowns with reduced thickness
    Acta Odontologica Scandinavica 2015 FULLTEKST / SAMMENDRAG / ARKIV / DOI
  • A Harada, Keisuke Nakamura, Taro Kanno, R. Inagaki, Ulf Thore Ørtengren, Y. Niwano et al.:
    Fracture resistance of computer-aided design/computer-aided manufacturing-generated composite resin-based molar crowns
    European Journal of Oral Sciences 2015 FULLTEKST / SAMMENDRAG / ARKIV / DOI
  • Roberto Belloti Cornelio, Aksel Wikant, Hanne Mjøsund, Hilde Beate M. Kopperud, Johan Haasum, Ulf Wiel Gedde et al.:
    The influence of bis-EMA vs bis GMA on the degree of conversion and water susceptibility of experimental composite materials
    Acta Odontologica Scandinavica 2014 DOI
  • Keisuke Nakamura, Erik Adolfsson, Percy Milleding, Taro Kanno, Ulf Thore Ørtengren :
    Influence of grain size and veneer firing process on the flexural strength of zirconia ceramics
    European Journal of Oral Sciences 2012 DOI
  • Ingrid Slinde, Ingrid Smith, Hildur Cecilie Søhoel, Mildrid Beate Vevelstad, Morten Enersen, May-Helen Losoa Forsberg et al.:
    Retningslinjer for smittevern ved de odontologiske læresteder i Norge
    Universitetet i Bergen 2015
  • Vibeke Barman Michelsen, Jan Tore Samuelsen, Jack-Ansgar Bruun, Jon Einar Dahl, Einar Jensen, Ulf Thore Ørtengren :
    ENDRINGER I PROTEOMET I HUMANE MONOCYTTER ETTER EKSPONERING FOR METHACRYLATMONOMER FRA DENTALE MATERIALER
    2016
  • Bo Wold Nilsen, Ulf Thore Ørtengren, Jaione Simon-Santamaria, Karen Kristine Sørensen, Vibeke Barman Michelsen :
    Low-grade toxicity of matrix constituents of polymer resin based dental materials - A review of terminology and methods
    2016
  • Vibeke Barman Michelsen, Ulf Thore Ørtengren, Einar Jensen :
    EI OG CI BASERT GC-MS ANALYSE AV UTLEKKSSTOFFER FRA DENTALE POLYMERBASERTE FYLLINGSMATERIALER
    2016
  • Mathieu Mouhat, James Mercer, Ulf Thore Ørtengren :
    Temperature distribution on natural teeth subjected to light curing with different LED curing devices –preliminary results. Oral presentation.
    2015
  • Mathieu Mouhat, James Mercer, Magnus Hakeberg, Ulf Thore Ørtengren :
    LED curing devices –Temperature distribution on natural teeth correlated to intensity and distances
    2015
  • Steinar Lægreid, J-M Nergård, K Nakamura, Ulf Thore Ørtengren :
    Fracture resistance of monolithic zirconia crowns: Choice of cement
    2014
  • K. Nakamura, A. Harada, R. Inagaki, T Kanno, Y. Niwano, Percy Milleding et al.:
    Strength of Monolithic Zirconia Molar Crowns with Reduced Thickness
    2014
  • A. Bjørkum, K. Egenæs-Svendsen, Vibeke Barman Michelsen, Einar Jensen, Ulf Thore Ørtengren :
    The Influence of bis-EMA Content on the Leachability of Dental Composite Resins
    2014
  • S. Lægreid, J-M Nergård, K. Nakamura, Ulf Thore Ørtengren :
    Fracture resistance of monolithic zirconia crowns: Choice of cement
    2014
  • Kari-Mette Andersen, Morten Enersen, Anne Karin Kristoffersen, André Ingebretsen, Ulf Thore Ørtengren, Peter Gaustad et al.:
    Phenotypic diversity among clinical Candida glabrata strains in Norwegian health care unit. Oral presentation
    2014
  • Kari-Mette Andersen, Morten Enersen, Anne Karin Kristoffersen, André Ingebretsen, Ulf Thore Ørtengren, Peter Gaustad et al.:
    Phenotypic Characterization of Candida glabrata from Blood, Respiratory and Gastrointestinal Tracts
    2014
  • Kari-Mette Andersen, Morten Enersen, Anne Karin Kristoffersen, André Ingebretsen, Ulf Thore Ørtengren, Peter Gaustad et al.:
    Phenotypic Characterization of Candida glabrata from Blood, Respiratory and Gastrointestinal Tracts. Poster presentation
    2014
  • Kari-Mette Andersen, Morten Enersen, Anne Karin Kristoffersen, André Ingebretsen, Ulf Thore Ørtengren, Peter Gaustad et al.:
    Phenotypic Characterization of Candida glabrata from Blood, Respiratory and Gastrointestinal Tracts. Oral Presentation
    2014
  • Kari-Mette Andersen, Morten Enersen, Anne Karin Kristoffersen, André Ingebretsen, Ulf Thore Ørtengren, Peter Gaustad et al.:
    Phenotypic characterization of Candida glabrata from blood, respiratory and gastrointestinal tracts
    2014
  • Vibeke Barman Michelsen, Ulf Thore Ørtengren, Einar Jensen :
    Comparison of EI and CI based GC-MS analysis of leachables from Dental Polymer-Based Restorative Materials
    2014
  • Vibeke Barman Michelsen, Jan Tore Samuelsen, Jack-Ansgar Bruun, Jon Einar Dahl, Einar Jensen, Ulf Thore Ørtengren :
    Sub-lethal Concentrations of HEMA Alter Protein Expression in Human Monocytes.
    2014
  • Asbjørn Jokstad, Ulf Thore Ørtengren :
    Innovative biomaterials research... ...under the Northern Lights...
    Public Service Review: European Union 2013 FULLTEKST
  • Ulf Thore Ørtengren, Harald M Eriksen, Jan Bergdahl :
    Development in dental education and research
    Public Service Review : European Union 2012
  • Ulf Thore Ørtengren, Harald M Eriksen, Jan Bergdahl :
    Dental education in Northern Norway
    Public Service Review : European Union 2012
  • Ulf Thore Ørtengren, Harald M Eriksen, Jan Bergdahl :
    Polar Bite
    PAN european networks science and technology 2012
  • Ulf Thore Ørtengren :
    Delay the decay
    Pan European Networks: Science and Techology Handbook/Manual 2012

    • The 50 latest publications is shown on this page. See all publications in Cristin here →

    Publications outside Cristin

    Milleding P, Örtengren U, Karlsson S. Ceramic inlay systems: some clinical aspects. J Oral Rehabil 1995; 22; 571-580.
    Örtengren U, Andreasson H. Avvikande reaktioner mot dentala polymera material. Tandläkar Tidningen. 1997; 9; 39-42
    Örtengren U. Dagens medicin. 1997; 2; 14.
    Milleding P, Ahlgren F, Wennerberg A, Örtengren U, Karlsson S.
    Microhardness and surface topography of a composite resin cement after water storage. Int J Prosthodont 1998; 1: 21-26.
    Erneklint C, Ödman P, Örtengren U, Rasmusson L.
    Tolerance test of five different types of crowns on single-tooth implants.
    Int J Prosthodont 1998; 11: 233-239
    Örtengren U, Andreasson H, Karlsson S, Meding B, Barregård L. Prevalence of self reported skin symptoms among Swedish dentists. Eur J Oral Sci 1999. 107; 496-505.
    Örtengren U, Elgh U, Spasenoska V.Milleding P, Haasum J, Karlsson S.
    Water sorption and flexural properties of a polymer resin cement after water storage. Int J Prosthodont 2000; 13: 141-147
    Örtengren U. On composite resin materials. Degradation, erosion and possible adverse effects in dentists.Thesis.Swedish Dental Journal Supplement 141, 2000.
    Örtendahl T, Örtengren U. A new orthodontic bonding adhesive. J of Clin Orthodont 2000; 1: 50-54
    Wallenhammar L-M, Örtengren U, Andreasson H, Barregård L, Björkner B, Karlsson S, Wrangsjö K, Meding B. Contact allergy and hand eczema in Swedish dentists. Contact Dermatitis 2000; 43: 192-199
    Hagberg S, Ljungqvist G, Barregård L, Andreasson H, Örtengren U, Karlsson S. Exponering i tandvårdsmiljö för flyktiga akrylater. Rapport från Yrkes och Miljömedicin nr 81. Nov 2000. ISBN 91-7876-080-1, ISSN 0282-2199.
    Örtengren U, Wellendorf H, Karlsson S, Ruyter IE. Water sorption and solubility of dental composites and identification of monomers released in an aqueous environment. J Oral Rehabil 2001; 28: 1106-1115
    Örtengren U, Andersson F, Elgh U, Terselius B, Karlsson S. Influence of pH and storage time on the sorption and solubility behaviour of three composite resin materials. J Dent 2001; 29: 35-41.
    Wrangsjö, K, Örtengren U, Wallenhammar L-M, Barregård L, Andreasson H, Björkner B, Karlsson S, Meding B. Protective gloves in Swedish dentistry - use and side effects.
    British J Derm. 2001; 145: 32-37.
    Gewalli F, Guimaraes-Ferreira JP, Maltese G, Örtengren U, Lauritzen C. Expander elements in craniofacial surgery.: An experimental study. Scand J Plast Reconstr Hand Surg. 2001; 35(2): 149-156.
    Andreasson H, Örtengren U, Barregård L, Karlsson S. Work-related skin and airway symptoms among Swedish dentists rarely cause sick-leave or change of professional career. Acta Odontol Scand. 2001; 59: 267-272
    Hallgren C, Sawase T, Örtengren U, Wennerberg A. Histomorphometric and mechanical evaluation of the bone-tissue response to implants prepared with different orientation of surface topography. Clin Impalnt Dent Relat Res. 2001; 3(4): 194-203.
    Guimaraes-Ferreira JP, Gewalli F, Örtengren U, Owman-Moll P, Freide H, Lauritzen C. Strip cranioectomy and expander elements for treatment of sagital synostosis. J Craniofac Surg. 2001
    Örtengren U, Maillard B. Silanisering av protetiska konstruktioner. Kunskapsdokument från KDM. Socialstyrelsen 2001. 2001-123-75. ISBN 91-7201-599-3
    Örtengren U, Langer S, Göransson A, Lundgren T. Influence of pH and time on release of organic substances from a dental composite resin. A fluorescence spectrophotometry and gas chromatography/mass spectrometry analysis. Eur J Oral Sci 2004;6(112); 530-37
    Arvidsson A, Örtengren U, Wennerberg A. Influence of chemo-mechanical caries removal on the surface topography of dental composite resin and glass-ionomer materials. An in vitro study. Acta Odontol Scand. 2004;62: 137-142.

    Erneklint C, Odman P, Ortengren U, Karlsson S. An in vitro load evaluation of a conical implant system with 2 abutment designs and 3 different retaining-screw alloys. Int J Oral Maxillofac Implants. 2006 Sep-Oct;21(5):733-7.

    Schedle A, Örtengren U, Eidler N, Gabauer M, Hensten A. Do adverse effects of dental materials exist? What are the consequences, and how can they be diagnosed and treated? Clin Oral Implants Res. 2007 Jun;18 Suppl 3:232-56.

    Sahlin-Platt A, Örtengren U, Mladenovic Z, Ransjö M. Effects of Dyract AP and released ionic products on periodontal ligament cells and bone marrow cultures. Dent Mater. 2008 Dec;24(12):1623-30

    Edblad T, Hoffman M, Hakeberg M, Örtengren U, Milleding P, Wennerberg A. Micro-topography of dental enamel and root cementum. Swed Dent J.2009;33(1):41-8.

    Nakamura K, Kanno T, Milleding P, Örtengren U. Zirconia as a Dental Implant Abutment Material: A Systematic Review. Int J Prosth. 2010:23(4); 299-309

    Nakamura K, Adolfsson E, Milleding P, Kanno T, Örtengren U. Influence of grain size and veneer firing process on the flexural strength of zirconia ceramics. Eur J Oral Sci. 2012:120; 249-254.

    Cornelio Belloti R, Haasum J, Gedde U, Kopperud Molvig H, Örtengren U. Influence of mould materials on the degree of conversion on the surfaces of composite resin based materials. Brazil J Dent Res 2012:11(4);469-474

    Cormelio BR. Wikant A, Mjøsund H, Kopperud HM, Haasum J, Gedde U, Örtengren U. The influence of bis-EMA on the degree of conversion and water sorption and solubility of dental composite materials. Acta Odontol. Scand. 2013. Nov 21.

     

    Papers in other journals

     Örtengren U, Andreasson H. Avvikande reaktioner mot dentala polymera material. Tandläkar-Tidningen. 1997; 9; 39-42

    Örtengren U.  Dagens medicin. 1997; 2; 14.

    Örtengren U, Maillard B. Silanisering av protetiska konstruktioner. Kunskapsdokument från KDM. Socialstyrelsen 2001. 2001-123-75. ISBN 91-7201-599-3

    Barregård L, Örtengren U. Dentala material ur arbetsmiljösynpunkt. Kunskapsdokument från KDM. Socialstyrelsen 2007. 2007-123-91.

    Örtengren U. Skin symptoms among dentists due to occupational activity. J Dent Outlook 2007: 110(2). (In japanese)

    Örtengren U. Komposit och ljushärdning. Odontologi 2008. 93-99. Munksgaards förlag. Köpenhamn, Danmark.

    Örtengren U. Silanisering av protetiska kontruktioner. Kunskapsdokument från KDM. Socialstyrelsen 2008. 2008-123-14.

    Örtengren U, Eriksen H, Bergdahl J. Polar Bite. PAN European Networks-Science and Tehcnology. 2012; March (02): 144-145.

    Örtengren U, Eriksen H, Bergdahl J. Dental Education in Northern Norway. Public Service Review. 2012; (23): 330-331. 

    Örtengren U, Eriksen H, Bergdahl J. Development in dental and research. Public Service Review. 2012; (24):

    Örtengren U. Delay the decay. PAN european network. Science and Technology. 2012 (4)

    CEN/TC 55 WG 8 under ledning av Örtengren U. CEN/TR 16386 Dentistry – Guidelines for handling methacrylate-based materials in the dental laboratory. 2013




    Research interests

    Main interest: polymer resin based materials, polymerization, degradation and erosion processes, analysis of substances eluted from polymer material (e.g. composites) under different conditions.
    In addition  research projects concerning working environment and especially the issue concerning allergy to dental materials among dental personnel and dental technicians but also to some extent in patients are focused on.

    Researcher profile in Cristin