Adjustable dental impression tray with adaptive lock

An adjustable dental impression tray comprising:

• an anterior section and a posterior section, the anterior section and the posterior section lying essentially in a horizontal plane, wherein each of the anterior section and the posterior section comprises an arrangement of distal ends that are connectable and disconnectable from the other section, wherein one of the anterior section and the posterior section further comprises elongated slots to accommodate a complementary end of the other section;
• and
• a handle extending from the anterior section away from the posterior section, wherein the anterior section and the posterior section are connected in a single tray with a predetermined breakaway modularity comprising at least two regions disposed on lateral sides of a section, wherein the at least two regions are configured to breakaway,
• wherein the anterior section and the posterior section are configured to reconnect after breaking by the breakaway modularity to form a tray of a different size after removal of at least part of the breakaway region,
• one of the anterior section and the posterior section having at least one vertically extending opening adjacent its distal end after the breaking away, and the other of the anterior section and the posterior section having at least one vertical extending element adjacent its distal ends after the breaking away of the initially connected single tray, and
• the opening and the element being of complementary shape.