No, you have no recourse (no legal grounds to sue) against the dentist:1) The dentist has no duty to schedule for your work needs or convenience; without a legal duty to do this, there is no liability to failing to do so.2) The vast majority of people do not lose their jobs due to a lack of dentures--therefore, this was unforeseeable. But you cannot sue people for unforeseeable losses, even if there otherwise had been a duty; people are only responsible for the reasonably foreseeable (normally or commonly predictable consequences) of their actions.