Sir, we were interested to read the letter about a facial burn caused by acid etch (BDJ 2014; 217: 56). We congratulate the authors on bringing this adverse incident to the attention of the BDJ readership including how to manage the burn and suggestions to prevent similar episodes. We have two comments regarding this issue. 1. Care should always be taken not to pass any instruments or materials over the patient's face; and 2. for British Orthodontic Society members adverse events can be reported, confidentially, via the BOS website (www.bos.org.uk). Participation will help to reduce potential risks to patients undergoing orthodontic treatment.

1. London 2. Ballymena