Medline, PubMed, Cochrane Central Register of Controlled Trials, LILACS and BBO databases with no language restrictions; unpublished literature was searched in Proquest Dissertations and Theses ...
Most people who have had braces will need corrective treatment years later, orthodontists have said. To tackle the problem, experts from the British Orthodontic Society (BOS) advised that retainers, ...
Data sources The following electronic databases were searched from 1946 to 31 August 2019: Medline, Embase, the Cochrane Oral Health Group's Trials Register, CENTRAL, ClinicalTrials.gov, the National ...
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