Which item listed would not typically require luting cement for placement?

Direct provisional restorations are typically temporary in nature and are designed to be easily placed and removed without the need for luting cement. These restorations, such as temporary crowns or bridges, are often made from materials that can adhere to the tooth structure through mechanical retention or can be held in place with minimal adhesive properties.

In contrast, indirect restorations, crowns, and bridges require luting cement to ensure a strong bond between the restoration and the prepared tooth. Luting cement provides the necessary strength and durability for these permanent restorations, which are intended to remain in place for an extended period. Similarly, orthodontic appliances are usually fixed to the teeth using adhesive bonding systems or other means that provide a secure attachment and allow for the application of orthodontic forces.