I am a law student and I am told by my dentist to have a serious dental work done. Can someone please tell me what to expect when having dental work done? I am having an emergency root canal treatment ( http://www.emergency-dental-365.com/procedures/emergency-root-canal/ ) from a nearby clinic in Toronto. My doubt is does going to a dentist fall under sick leave or annual leave? Will there be a need to provide a certificate or letter from the treating dentist? Has anyone been through this? Please share.