• Dental anxiety: A comparison of students of dentistry, biology and psychology 

      Storjord, Helene; Teodorsen, Mari; Bergdahl, Jan; Wynn, Rolf; Johnsen, Jan-Are Kolset (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-09-23)
      Dental anxiety is an important challenge for many patients and clinicians. It is thus of importance to know more about dental students’ own experiences with dental anxiety and their understanding of dental anxiety. The aim was to investigate differences in dental anxiety levels between dental students, psychology students, and biology students at a Norwegian university.
    • Development and validation of an instrument to assess oral health literacy in Norwegian adult dental patients 

      Stein, Linda Maria; Pettersen, Kjell Sverre; Bergdahl, Maud; Bergdahl, Jan (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-05)
      Objective: To develop and validate an interview instrument to assess oral health literacy in Norwegian adult dental patients. <p/>Materials and methods: The instrument, Adult Health Literacy Instrument for Dentistry (AHLID), was based on an OECD instrument used to assess general literacy in adults. 130 Norwegian adults (mean age 48 years; 57% women) participated. AHLID included a selection of ...
    • Effects of the Conceptual Model of Health Literacy as a Risk: A Randomised Controlled Trial in a Clinical Dental Context 

      Stein, Linda Maria; Bergdahl, Maud; Pettersen, Kjell Sverre; Bergdahl, Jan (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-01)
      Numerous conceptual models of health literacy have been proposed in the literature, but very few have been empirically validated in clinical contexts. The aim of this study was to test the effects of the conceptual model of health literacy as a risk in a clinical dental context. A convenience sample of 133 Norwegian-speaking adults was recruited. Participants were randomly allocated to an intervention ...
    • Longitudinal Evidence for Smaller Hippocampus Volume as a Vulnerability Factor for Perceived Stress 

      Lindgren, Lenita; Bergdahl, Jan; Nyberg, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
      Hippocampal volume has been found to be smaller in individuals with stress-related disorders, but it remains unclear whether smaller volume is a consequence of stress or rather a vulnerability factor. Here, we examined this issue by relating stress levels to hippocampal volumes in healthy participants examined every 5 years in a longitudinal population-based study. Based on scores of 25- to ...
    • Psychological symptoms and self-image of patients with complaints attributed to dental restorative materials 

      Mårell, Lena; Bergdahl, Jan; Tillberg, Anders; Stenberg, Berndt; Berglund, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-27)
      Objectives The aim was to study self-image and the level of psychological symptoms in patients with symptoms attributed to their dental restorative materials.<p><p> Materials and methods A questionnaire containing questions regarding dental and medical history was answered by 257 participants, one group with local oral symptoms only (LSO), and one group with multi-symptoms (M-S). A reference group ...