Final answer:
Incisions and excisions for restorative art purposes are made to enhance detail and texture in sculptures or artworks while preserving the original materials.
Step-by-step explanation:
Incisions and excisions for restorative art purposes are usually made to enhance the detail and texture of a sculpture or artwork. Carving is a common method used in art, where material is subtracted from a larger mass to achieve the desired form. Incising lines into the surface of ceramics or stone sculptures can create textures or provide intricate details. This process is important in conserving and restoring artwork while preserving the original materials.