Chelsea Dentist

my sister is havin a toothache really really bad, she wants to find a dentist emerency around the Boston area, like Boston Chelsea Malden Everett worship is ... or anyone know a search engine for dentists weekend emergency?

Everyone that is open! They can / will always make room for an appointment (no appointment) emergency.

checking for teaching colleges of Dentistry
they typically provide free or inexpensive available
also contact the local Red Cross
Many dentists will also work in exchange for work, you could offer to clean their office, do their plant maintenance, etc..