Assil is a specialist Endodontist from Hamilton and owns a specialist private practice (Waikato Endodontics). She graduated with distinction from the University of Otago in 2011. She received several awards including the award for Excellence in Clinical practice and was placed on the Dean's list for her straight A academic record. Assil has published several papers in reputable peer-reviewed journals including the International Endodontic Journal and Journal of Endodontics. She has been invited to speak at national and international conferences as well as NZ’s Parliament and Premier House. She founded (and is currently a director of) two dental charities: Revive A Smile and ICARE (Iraqi Children’s Aid and Repair Endeavour) which provide free dentistry to at-need kiwis in NZ and children in Iraq, respectively. Assil is a member of several dental associations and is a fellow of the International College of Dentists. Her work providing aid to those in need, was recognized by the dental community and she is a previous recipient of the NZDA Outstanding Young Dentist Award.