Abstract: Interdental spaces are one of the typical manifestations of oral aesthetic defects, and their treatment often requires the collaborative intervention of multiple disciplines such as orthodontics, prosthodontics, periodontics, and implantology. This article reports a case of orthodontic-restorative combined treatment guided by the target restoration space (TRS) with the assistance of digital technology. Digital technology was used to determine the TRS before orthodontics, and orthodontic space management was carried out under the guidance of TRS, with real-time monitoring and a goal-oriented approach, ultimately achieving the expected restorative effect. This provides a clear diagnostic and therapeutic approach for choosing the best treatment timing and reasonable plan when closing interdental spaces through cross-departmental cooperation in clinical practice.

Key words: digitalization, target restoration space, veneer, orthodontics, anterior tooth gap