No. If the patient (traveller) is self-isolating in the same household as the family member, you are not to treat the family member until they have finished their mandatory self-isolation. If there is a safe and completely isolated section of a home where the traveller can self-isolate, then other people living there do not have to self-isolate as well. This also applies to anyone else who is in the residence where that individual is isolating e.g., roommates.
As of Nov 9, 2020, the NS Government has updated their restrictions and the Order. People travelling into Nova Scotia from outside NS/PE for non-essential reason must self-isolate alone or with others who are self-isolating for the same period. If there are other people in the same household, they must also self-isolate for the full 14 days as well.  The list of people deemed to be travelling for essential purposes is located here.
If the individual is experiencing a dental emergency, refer to the protocols listed in section 2.4 of the COVID-19 REOPENING PLAN FOR DENTURE CLINICS STAGE 3 COMPREHENSIVE CARE for full details on how to appropriately triage someone’s oral health care needs.