The seventh National Clinical Guideline in Paediatric Dentistry is published here. The process of guideline production began in 1994, resulting in first publication in 1997. Each guideline has a nominated main author but the content is not a personal view; it represents rather a consensus opinion of best clinical practice. Each guideline has been circulated to all consultants in Paediatric Dentistry in the UK, to Council of BSPD, and to people of related specialities recognized to have expertise in the subject. The final version of the guideline is produced from a combination of this input and a thorough review of published literature. The intention is to encourage improvement in clinical practice and to stimulate research and clinical audit in areas where scientific evidence is inadequate. Evidence underlying recommendations is scored according to the Scottish Intercollegiate Guidelines Network classification and guidelines should be read in this context. For those wishing for further detail, the process of guideline production in the UK is described in International Journal of Paediatric Dentistry 1997; 7: 267-268.