Control of substances hazardous to health regulations 2002 or as abbreviation (COSHH): COSHH is the regulation that requires employers to control or manage potential risks from substances that are hazardous to health. In the dental laboratory environment, you are likely to come into contact with chemicals relating to the lab itself or cleaning chemicals. Having identified this risks and measures to prevent you and other members from harm, the employer will have put in place procedures which you have a duty to follow also these measures might include wearing protective equipment or supplying safety data sheets in dental laboratory premises.