The aim was to measure variations in the threshold for operative treatment of occlusal caries in permanent teeth and the use of dental materials, compared with results from a similar study conducted in Norway in 1995. In 2009, a precoded questionnaire was sent electronically to 3,654 dentists with E-mail addresses in the member register of the Norwegian Dental Association. The questions were related to caries, treatment strategies and choice of dental materials. Replies were obtained from 61.3% respondents after two reminders. Restorative treatment of occlusal lesions confined to enamel was proposed by 12% of the dentists, compared with 18% in 1995 (p < 0.01). Older dentists more often than younger dentists would operatively treat enamel lesions (p < 0.01). Most dentists preferred to drill...
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