The development of a cognitive dental anxiety scale for
children and adolescents and investigation of the impact of
video modelling on the behaviour of anxious children
receiving dental treatment.
Doctoral thesis, UCL (University College London).
Objectives: To validate Abeer Cognitive Dental Anxiety Scale (ACDAS) for children and adolescents in English and Arabic and to investigate the use of video modelling in Paediatric Dentistry Methods: A total of 439 children (≥6 years) were used in the study. The main study utlilised 165 children, 84 from a London dental hospital, 81 from a primary school in Central London. For each child, 2 operators each assessed ACDAS at visit 1, and the chief investigator (AA) also assessed Child Fear Survey Schedule-Dental Subscale (CFSS-DS) at visit 1 and ACDAS two weeks later. A sample of 274 children (≥6 years) was assessed for external validity (generalisability); 184 children from Dubai and 90 children from a school in East London. For video modelling, a sample of 112 children attending for dental treatment were randomly allocated to either the control (prevention video) or the test (modelling video). Their level of anxiety was recorded before and after the video on ACDAS and their ability to cope with the subsequent procedure was assessed on a Visual Analogue Scale. Results: The ACDAS scale had substantial to almost perfect intra- and inter- examiner reliability along with concurrent validity 0.77 and discriminative validity 0.79. For convergent validity, ACDAS had a significant relationship between the Dental Anxiety (DA) scores and the cognitive status (P<0.001), Cronbach’s Alpha (α) was 0.90 which indicated a good internal consistency. Results of external validity were compared favourably with the results that were obtained from the main study. The video modelling was effective to reduce anxiety in the test group of the inhalation sedation and behaviour management RCTs (P<0.025). Conclusions: ACDAS is a valid cognitive scale to measure DA and it encompasses the required criteria for the Gold Standard DA scale for children and adolescents. The video modelling is an effective method to reduce dental anxiety in children.
|Title:||The development of a cognitive dental anxiety scale for children and adolescents and investigation of the impact of video modelling on the behaviour of anxious children receiving dental treatment|
|UCL classification:||UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute|
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