Authors: Conchita Martin, Simon J Littlewood, Declan T Millett, Bridget Doubleday, David Bearn, Helen V Worthington, Alvaro LimonesKey messages‐ We cannot draw firm conclusions about any one approach to retention over another because we have little confidence in the evidence.

Authors: Ahmed El-Angbawi, Grant McIntyre, Padhraig S Fleming, David BearnReview questionDo additional non-surgical procedures that claim to accelerate orthodontic tooth movement reduce the overall length of orthodontic treatment?

Coronavirus disease (COVID-19) is caused by a new strain of Coronavirus (SARS-CoV-2) discovered in 2019, and not previously identified in humans. Common symptoms include fever, cough, and shortness of breath. On 11 March 2020, the World Health Organization (WHO) announced the current COVID-19 outbreak as a pandemic.