## 1 _Introduction_
[PERSON]'s six keys to occlusion, which include molar relationship, crown angulation, crown inclination, no rotation, no spaces, and flat occlusal planes, are utilized in orthodontics [15]. A retention phase is usually necessary after active orthodontic tooth movement to maintain teeth in a new ideal esthetic and functional relationship and prevent their inherent tendency to return to their previous position [16]. Bonded or removable retainer can be used in the retention phase [17]. Fixed and removable retainers show similar effectiveness in maintaining stability outcomes [18]. The number of follow-up visits during the retention phase is affected by the practitioner's experience, whether vacuum-formed retainers were used, whether the orthodontist considered the presence of third molars or special-need patients when choosing the type of retainer, and to whom the orthodontist attributed responsibility during the retention phase [19]. Several occlusal analyzers are available for registering the occlusal relationships between dental arches. These indicators can be categorized into qualitative and quantitative indicators, with quantitative indicators being capable of measuring tooth contact events. Qualitative indicators include articulating paper, film and silk, occlusal spray, metallic shim stock film, and high spot indicator. In contrast, quantitative indicators include the T-Scan occlusal analysis system and virtual dental patient [20; 21]. Articulation paper is the most accessible means of inspecting and visualizing occlusal contacts. However, it carries a risk of error as extensive plane contact is not always strong, with single-point contacts being more powerful [22]. T-Scan Novus is an objective analysis tool that can determine both the force and timing, making it superior to articulating paper, which can only determine the location [23]. The T-Scan occlusal analysis system records and analyzes bite force distribution, indicating its relative intensity and occlusal timing. The balance plot, time display, and comparison screen are the three ways in which occlusal contacts can be recorded and analyzed [24; 25]. T-Scan 10 (2018), the newest version of the T-Scan system, has improved software details that benefit implant treatment. The previous version had artifacts in the frontal area, but T-Scan 10 can remove sensor artifacts due to overlapping front teeth. The software features of T-Scan 10 include analyzing occlusal function and an implant warning tool. Digital models can easily be uploaded, and T-Scan data can be overlayed onto an STL digital arch scan [26]. In one comparative study, three different techniques (intraoral and laboratory scanners, T-Scan III system, and the conventional classical method with articulating paper) were compared, and intraoral scanners showed reliability in occlusion registration when compared to the current gold standard [27]. In clinical demonstrations, intraoral scanning ends with an occlusion scan (bite registration). The accuracy of scanners differs depending on the correct scanning technique (every brand has a scheme and consequence of scanning steps) and the number of images (a large number of images can make the file heavy). Digital T-Scan analysis provides details of occlusion evolution, such as a digital timeline, contact sequence, intensity, and type of contacts between the left and right sides at every moment as a video recording as well as parameters such as occlusion and disocclusion times, which are very important in bruxism treatment [28; 29]. In a comparative survey, the highest occlusal contact area values were detected using the T-Scan and the lowest using the 3D surface scan [30]. Digital technologies play a part in teledentistry. A digital impression is an initial unit of the whole process [31]. It allows minimal patient contact with the treating dentist. Dental technicians do not have any contact with saliva or blood from the patient, which can be potentially dangerous [32].