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Department of Clinical Dentistry

Ørtengren, Ulf Thore

Department of Clinical Dentistry

Professor Biomaterials

(+47) 776 49120

(+47) 948 27 127


Office/visiting address
TANN 4.090
Ulf Ørtengren

Job description

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

Biographical data

Born 1959 (Stockholm, Sweden). Between 1982-86 odontological studies in Gøteborg. Between 1986 and 1995 working in dental public health care and as a private practitioner. Since 1992 I was working at the Dept. of Prosthetic Dentistry/Dental Materials Science at the Institute of Odontology, Gøteborg (Sweden) mostly at the preclinic and responsible for the education in Dental Materials Science 1996-2008.
In the year 2000 I defended my thesis "On composite resin materials".
After the year 2000, responsible for the preclinical education for dental students (2001-3) and also as deputy responsible for the education of dental technicians (2003-4).
I have also been working part time (2001-2006) for the National board of Health and Welfare as director for the Swedish Resource Centre for Dental Materials (KDM).
I am since 2002 an expert in and from 2005 chairman of the Swedish Standard Committee for Dentistry.

February 2006,  Professor in Biomaterials at the IKO/University of Tromsø and from 2010 head of department.

Researcher profile in Cristin

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.

Research projects

Supervisor of 2 PhD projects. One with focus on composite resin materials and one in yttrium stavbilized zirkoniadioxide.

Other publications

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.

Ehrneklint C, Ödman P, Örtengren U, Karlsson S. An in-vitro load evaluation of a conical implant system with two abutment designs and three different bridge screw alloys. Accepted JOMI 2005.

Papers in manuscript:

Nilsson E, örtengren U. Comparison of three light curing systems using microhardness test.

Alemi B, Dusén B-M, örtengren U. Analysis of water sorption, solubility and eluted substances from 2 methacrylic base materials for removable prothesis.
Lindblom M, Aronsson G, örtengren U. Cytotoxic effects of three metal alloys.

örtengren U. Sorption and solubility of soft lining materials for long term use. Survey of Literature.

Edblad T, örtengren U, Wennerberg A. Pre-fabricated and modified customized abutments. Surface evaluation before and after cast-to process.

Publications in CRIStin

  • Cornelio, Roberto Belloti; Wikant, Aksel; Mjøsund, Hanne; Kopperud, Hilde Beate M.; Haasum, Johan; Gedde, Ulf Wiel; Ørtengren, Ulf Thore. The influence of bis-EMA vs bis GMA on the degree of conversion and water susceptibility of experimental composite materials. Acta Odontologica Scandinavica 2013. ISSN 0001-6357.s doi: 10.3109/00016357.2013.856467.
  • Nakamura, Keisuke; Adolfsson, Erik; Milleding, Percy; Kanno, Taro; Ørtengren, Ulf Thore. Influence of grain size and veneer firing process on the flexural strength of zirconia ceramics. European Journal of Oral Sciences 2012; Volum 120 (3). ISSN 0909-8836.s 249 - 254.s doi: 10.1111/j.1600-0722.2012.00958.x.
  • Nakamura, Keisuke; Kanno, Taro; Milleding, Percy; Ørtengren, Ulf Thore. Zirconia as a Dental Implant Abutment Material: A Systematic Review. International Journal of Prosthodontics 2010; Volum 23 (4). ISSN 0893-2174.s 299 - 309.
  • Edblad, Thorsten; Hoffman, Maria; Hakeberg, Magnus; Ørtengren, Ulf Thore; Milledning, Percy; Wennerberg, A. Micro-topography of dental enamel and root cementum. Swedish Dental Journal 2009; Volum 33 (1). ISSN 0347-9994.s 41 - 48.
  • Ørtengren, Ulf Thore. Komposit och Ljushärdning - En Översikt. Munksgaard Forlag 2008 ISBN 9788762807815.s 93 - 99.
  • Sahlin-Platt, Annika; Ørtengren, Ulf Thore; Mladenovic, Zivko; Ransjö, Maria. Effects of Dyract AP and released ionic products on periodontal ligament cells and bone marrow cultures. Dental Materials 2008; Volum 24 (12). ISSN 0109-5641.s 1623 - 1630.s doi: 10.1016/j.dental.2008.03.024.
  • Ørtengren, Ulf Thore. Skin symptoms among dentists due to occupational activity. Dental Outlook 2007; Volum 110 (2). ISSN 0011-8702.s 353 - 367.
  • Schedle, A; Ørtengren, Ulf Thore; Eidler, N; Gabauer, M; Hensten, Arne. Do adverse effects of dental materials exist? What are the consequences, and how can they be diagnosed and treated?. Clinical Oral Implants Research 2007; Volum 18. ISSN 0905-7161.s 232 - 256.s doi: 10.1111/j.1600-0501.2007.01481.x.
  • Jokstad, Asbjørn; Ørtengren, Ulf Thore. Innovative biomaterials research... ...under the Northern Lights.... (fulltekst) Public Service Review: European Union 2013; Volum 25. ISSN 1472-3395.s 208 - 209.
  • Ørtengren, Ulf Thore. Delay the decay. Pan European Networks: Science and Techology 2012; Volum 4. ISSN 2049-2391.s 114 - 115.
  • Ørtengren, Ulf Thore; Eriksen, Harald M; Bergdahl, Jan. Dental education in Northern Norway. Public Service Review : European Union 2012 (23).s 330 - 331.
  • Ørtengren, Ulf Thore; Eriksen, Harald M; Bergdahl, Jan. Polar Bite. PAN european networks science and technology 2012 (2).s 144 - 145.
  • Andersen, Kari-Mette; Enersen, Morten; Kristoffersen, Anne-Karin; Gaustad, Peter; Ørtengren, Ulf Thore; Olsen, Ingar. Phenotypic and genotypic characterization of Candida glabrata. Geiloseminaret 2012-10-08 - 2012-10-10 2012.
  • Ørtengren, Ulf Thore; Eriksen, Harald M; Bergdahl, Jan. Development in dental education and research. Public Service Review : European Union 2012 (24).s 306 - 307.
  • Ørtengren, Ulf Thore; Belloti, Roberto. Conversion of Composite Resins. Conference in Geilo 2010-01-27 - 2010-01-28 2010.
  • Ørtengren, Ulf Thore. Sement, sementering. Januari kurserna 2009-01-12 - 2009.
  • Ørtengren, Ulf Thore. Silanisering av protetiska konstruktioner. Kunskapsdokument från KDM/Socialstyrelsen 2008.
  • Ørtengren, Ulf Thore. Yrkesskador, yrkeshygiene og allergier inom tandvården. Landsmøtet 2008-10-16 - 2008-10-18 2008.
  • Ørtengren, Ulf Thore. Kompositer, plast och arbetsmiljö.. FDI kongressen, Stockholm 2008-09-15 - 2008-09-15 2008.
  • Ørtengren, Ulf Thore. Moderna dental material en yrkesrisiko?. NTFs Landsmöte Lillestrøm 2008-10-16 - 2008-10-16 2008.
  • Ørtengren, Ulf Thore. CEN/TC 55 – Dentistry.. Konferens i Bryssel 25-26/2 2008-02-25 - 2008-02-26 2008.
  • Ørtengren, Ulf Thore. ISO/TC 106 – Dentistry.. Konferens i Göteborg 2008-09-28 - 2008-10-04 2008.
  • Ørtengren, Ulf Thore; Barregård, Lars. Dentala material ur arbetsmiljösynpunkt. Kunskapsdokument från KDM/Socialstyrelsen 2007.
   Look at all works in CRIStin

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