1. Farnfield G. Conscious sedation. In The Provision of Dental Care Report of an Expert Group on Sedation for Dentistry. Commissioned by the Department of Health 2003. Available online at https://www.rqia.org.uk/RQIA/files/bc/bcb0650d-8660-4d5f-940f-ea3b60ecf5f6.pdf (accessed 7 November 2019).
2. Conscious Sedation in Dentistry Dental Clinical Guidance. 2017. Available online at http://www.sdcep.org.uk/wp-content/uploads/2018/07/SDCEP-Conscious-Sedation-Guidance.pdf (accessed 7 November 2019).
3. Haridas R P. Horace Wells' demonstration of nitrous oxide in boston. Anaesthesiology 2013; 119: 1014-1022.
4. Hayden J. The Jorgensen Philosophy of Intravenous Sedation. Available online at http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC2516413&blobtype=pdf (accessed 9 February 2019).
5. NHS Digital. Adult Dental Health Survey. Available online at http://content.digital.nhs.uk/article/3894/Adult-DentalHealth-Survey (accessed 14 January 2019).