Boekema, S.E. (2022) CBM-I bij de behandeling van tandartsfobie. thesis, Dentistry.
Full text available on request.Abstract
Introduction: Cognitive bias modification (CBM) is an effective therapy tool in addition to regular treatment of anxiety disorders. In an ambiguous situation, a person with anxiety has a tendency to interpret the situation negatively. CBM tries to change the cognitive processes that are responsible for these distorted, negative thoughts (bias). Almost no data exists about the effectiveness of CBM in dental phobia. The research objective is to gain understanding if it is possible to implement cognitive bias modification of interpretation (CBM-I) successfully in addition to exposure therapy in dental phobia and if it is an effective treatment for dental phobia. The research question is: ‘To what extent does applying CBM-I affect anxiety scores and interpretation bias in dental phobia?’ We also examined the drop-out in a clinical setting and home setting in this research. Method: This study was a double-blind randomized controlled trial. The research was conducted in April 2021-November 2021 in Martini Ziekenhuis in Groningen, The Netherlands. The research participants were twelve patients who were referred to the ‘Centrum Bijzondere Tandheelkunde (CBT)’ in Martini Ziekenhuis due to their dental phobia. The interpretation bias has been computer-based trained four times before or after exposure therapy. The anxiety levels have been measured three times on the Dental Anxiety Scale (DAS), ‘Angstschaal’ AS, ‘Korte vragenlijst Angst voor de Tandheelkundige Behandeling’ (K-ATB) and ‘Duur Psycho-Fysiologische Reacties’ (DPFR). The interpretation bias was measured by the recognition task. Mixed-design ANOVA has been applied for the statistical analyses. Results: There was no significant Time x Group interaction, the training had no effect on the anxiety scores. The main effect ‘Time’ (t=0, t=1, t=2) had a significant effect on the course of the DAS-, AS- and K-ATB-scores, but not for the DPFR- and interpretation bias score: the mean of the DAS, AS and K-ATB scores decreased significantly over time (p < ,05). One-third (33%) of the participants completed the training and measurements. Discussion and conclusion: The anxiety scores (with the exception of the anticipation anxiety) decreased in the treatment and the control group. In this study, the CBM-I turns out not to be effective, but this can also be explained by the small sample size due to dropout and non-response. The research group is complex, because they often have other psychological complaints. Also, due to COVID-19 fewer people were able to participate. The dropout turns out a lot higher in a home setting compared to the clinical setting. Therefore, it is recommended that during the follow-up research, the CBM-I training is carried out in the clinical setting.
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Bildt, dr. M.M. and Beij, A. de |
| Faculty: | Medical Sciences |
| Date Deposited: | 20 Mar 2023 13:22 |
| Last Modified: | 20 Mar 2023 13:22 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3454 |
Actions (login required)
 |
View Item |