Effective practice? A randomised trial of dissemination and implementation strategies for guidelines for the appropriate extraction of third molar teeth

INTERVENTION: Intervention groups as follows: 1. Control (paper copy of guidelines and opportunity to attend a postgraduate course) 2. Audit and feedback 3. Patient specific prompts/restructured records 4. Computer aided learning with decision support CONDITION: Oral health/stomatognathic diseases ; Oral Health ; Disorders of tooth development and eruption PRIMARY OUTCOME: The proportion of patients whose treatment complied with the guideline. SECONDARY OUTCOME: No secondary outcome measures INCLUSION CRITERIA: 1. Randomly selected from the Scottish Dental Practice Board list and invited to participate in the trial by mail 2. Written informed consent