DTX (2024 Edition) with lesion on the mesial of the mandibular left 2nd premolar. This tooth allows practice for the class III in the ADEX exam. The only difference between first-generation and 2024 version is mainly cosmetic such as the color (white root vs orange) and a slightly softer pulp. Although the teeth in the actual ADEX exam will differ, they are designed with similar color and hardness. Compatible only with the ModuPRO One. CompeDont is a registered trademark of CDCA.