## 1 Introduction  
Retention is the final phase that follows orthodontic treatment, aimed at maintaining tooth alignment and preventing relapse, which commonly occurs to varying extents [1]. Due to the diversity of orthodontic presentations, there is no single optimal retention protocol, and approaches are tailored based on pretreatment characteristics, treatment-induced changes, and general patient characteristics [2]. Retainers can be classified into two main types: fixed and removable [3]. Among these, passive Hawley-like removable appliances are increasingly popular and reliable in maintaining the desired occlusion. Variations include the removable Wrap Around appliance, which is an original version of the Hawley plate with modifications such as the Adams claps; translucent retainers like Astics, which provide an aesthetic Hawley-type option; reinforced removable retainers that feature a metal grid reinforcing the acrylic base. Vacuum-formed retainers are easy to manufacture and prescribe [4]. In Switzerland, a survey revealed that most orthodontists place a bonded retainer in the upper and lower arches, except when the upper arch has undergone expansion during treatment or when extractions have been performed in the upper arch, in which cases a combination of fixed and removable retainers is used. Opinions differ on the recommended number of hours for wearing removable retainers and the duration of the retention phase [5]. In a comparative study focusing on linear transpalatinal measurements, 3D-printed retainers were found to be more accurate and reliable than vacuum-formed retainers [6]. Digitalization has become an integral part of dentistry, permeating various aspects of dental practice. The initial step in the digital workflow involves obtaining a digital model through the utilization of three-dimensional (3D) scanning technologies and converting physical models into digital computer-aided design (CAD) files [7]. The application of 3D scanning in dentistry offers several advantages, such as rapid production with customized design, enhanced patient comfort, time and cost efficiency, improved procedure planning, multi-angle visualization of dental anatomy, and increased treatment success rates [8]. To achieve a fully digital protocol, specific devices are required, including an intraoral scanner, a T-Scan system, and dental software. The T-Scan system, integrated into the digital workflow, allows for the detection of occlusal contacts, while the intraoral scanner captures the occlusal surfaces. Alignment of the three-dimensional occlusal surface with T-Scan registration enables the projection of occlusal forces onto the patient's occlusal surfaces, facilitating the assessment of occlusal forces over time. This integration demonstrates the feasibility of incorporating different tools and software into a comprehensive dental digital workflow [9]. The evolution of the T-Scan system from its initial generation to the latest version has revolutionized occlusal analysis. The 8 th generation, released in 2012, simplified the user interface, presenting occlusal contacts in a dynamic movie format with color-coded three-dimensional or two-dimensional (2D) graphics. This version provided insights into the percentage of force per tooth, along with analytic software displaying the center of force (COF) and COF trajectory, enabling a comprehensive understanding of the overall balance of occlusion [10]. The T-Scan system's desktop changes in T-Scan 8 and T-Scan 10 have enhanced the visualization and functionality of the software. In T-Scan 8, important desktop changes include an enlarged Force vs. Time Graph, providing easier visualization of color-coded force and timing lines. Additionally, the introduction of a rotating 3-Dimensional ForceView window allows for improved visualization of moving individual force columns during movie playback. The rotating 3-D ForceView enables clinicians to adjust the window's orientation to eliminate overlapping rising and falling force columns, optimizing the viewing experience [11].