Author's correction note:

Letter Br Dent J 2023; 234: 72.

When initially published, the institution was omitted from the author affiliations. These should have read:

N. Kurian, J. M. Cherian, N. A. Sudharson, K. G. Varghese, S. Wadhwa, Christian Dental College, Ludhiana, India

The authors apologise for any inconvenience caused.