Final answer:
Articles designed to be affixed to or inserted in tilework, such as towel bars and soap holders, are usually made of ceramic material.
Step-by-step explanation:
Articles designed to be affixed to or inserted in tilework, such as towel bars and soap holders, are usually made of ceramic material. Ceramic is a solid material that is strong enough to be used in structural applications, and it is commonly used in the production of earthenware, porcelain, and brick. These ceramic articles provide durability and aesthetics to the tilework, making them essential accessories in bathrooms and kitchens.