Visit your dentist well before an extended trip (minimum 6 to 8 weeks), in case you need some dental treatment. Tell your dentist where you are going & for how long. This will allow them to plan appropriately & give you relevant advice. Remember that many dental problems don’t cause pain until they get to an advanced stage. Being seen early will to allow you to plan treatment & will give you time to adapt to any new treatment and allow your teeth to settle down etc before you depart. Get the email address / telephone number of your dentist & take it with you just in case.