Hello, this is more a "body shop" concern than a mechanical concern.
Everything can be repaired. Whether you need to replace parts (door skins / doors) or use other sheet metal patch materials / methods -- is best left to be estimated by a local body shop.
RepairPal Certified shops can diagnose and repair your 2004 Lincoln Aviator. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.