Some related links for dental anxiety. 

Internationally renowned Dental Fear Clinics

University of Washington

University of Goteborg

See relevant article from research group at this clinic:

Dental anxiety / phobia resources for patients and dental professionals

Relevant article about use of dental anxiety questionnaires

Psychometric resources

Free software to calculate empirically the number of factors in a scale (you will also need to download ViSta7 at no cost)

British Society of Clinical & Academic Hypnosis (BSCAH)

Professor Gerry Humphris, University of St Andrews
Medical and Biological Sciences Building, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9TF.

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