This paper describes different types of space maintainers and the clinical situations where they may be useful, for example, when primary teeth have been lost prematurely. It serves as a clinical guide for practitioners on the best types of space maintainers to use and on the clinical uses of space maintainers in preventing undesirable tooth movements and resulting loss of arch length.

When treating children for dental health problems, it is often necessary to use behavioural management techniques to calm any fears. Rubya Adamji, Isabelle Holroyd and Paul Ashley describe the use of pharmacological methods for these purposes.

Isolated bilateral macrodontia of the mandibular second premolars is a rare condition. We believe that the case reported here is the first in which isolated bilateral macrodontia of the mandibular second premolars presents with numerous dental anomalies affecting other teeth. A 14-year-old boy was referred to the Paediatric Dental Department of King’s College Hospital with a partially erupted mandibular left second premolar. Clinical and radiographic examination subsequently revealed macrodontia of both mandibular second premolar teeth and multiple other dental anomalies. This report discusses the presentation and multidisciplinary management of this case. Clinical relevance: This case report describes an already rare condition made even more extraordinary owing to its presentation with multiple other dental anomalies.

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A young patient with previously repaired mixed aortic valve disease presented to his local hospital with symptoms and signs consistent with infective endocarditis. Following confirmation of Streptococcus viridans in his blood cultures, he underwent initial antibiotic treatment, followed by surgical resection of his right ventricular outflow tract vegetation. This chapter examines the difficulty in making a diagnosis of infective endocarditis, the devastating nature of its course, and the challenges in managing this condition. Finally, it explores the association of infective endocarditis with poor dental hygiene, the importance of promoting effective oral hygiene, and the evolving evidence in the use of antibiotic prophylaxis.