Francis K, Long DDS/DMDAttending PhysicianGeneral Dentistry Education: University of Toronto Faculty of DentistryMain Office:905-881-7839, Dr. Francis K Long Smile in Thornhill Dental care, 8175 Yonge St, Thornhill, ON L3T 2C6 Office Hours: Monday 8 a.m. to 6 p.m. Tuesday 8 a.m. to 6 p.m. Wednesday 8 a.m. to 6 p.m. Thursday 8 a.m. to 6 p.m. Friday 8 a.m. to 1 p.m. Saturday 8 a.m. to 3 p.m. Sunday Closed