It'd be good to get your experience and will definitely help you be a better dentist, as you will understand all aspects of the job in dentistry. Being a dentist is just a part of it. It's worth trying but you will have to speak to your employer and check your contract, cause you can't be a dental nurse without being on a course. And some companies will make you pay for the course yourself if you don't complete it or leave straight after you completed it if that makes sense x