Original dental records belong to the dentist who provided the treatment, and not the patient, because dentists have to keep all of their records for a period of time, as set out by their provincial dental regulatory body. Once you have selected a new dentist, you can request that a copy of your records be transferred from your former dentist.
You may be required to sign a release form from your former dental office and you may also be charged an administrative fee for having your records copied and sent to another dental office. If you have questions about the records transfer process in your province, ask your dentist or contact the provincial dental regulatory body.