## 3 Discussion  
In the present case, a full digital workflow was adopted for the patient. Mandibular repositioning was established automatically by the software, which moved the mandible to normalize the intra-articular space widths (Figure 4). The software was set on the following values of intra-articular space width: for the anterior space in the range of 1.7-2.7 mm, for the superior space in the range of 3.1-3.9 mm, and for the posterior space in the range of 3.4-4.0 mm. Then, the software calculates the intra-articular widths of the clinical case. The intra-articular widths are determined with the software as follows: the most prominent points on the right and left sides of each condyle are individuated on the contours of the horizontal sections of each condyle; then, the most distant points are determined on these contours. Then, segments connect these points, for each condyle, to the glenoid fossa. A total of 45 cross-sections are built along these segments for each condyle. On each section, the distances between condyle and fossa for distal, upper, and medial part are measured (the range of measurements in the present  
Figure 8: The position of the condyles adjusted by the repositioning splint (observed on the subsequent CBCT recording with splint). Note that it is very different compared with their position before treatment. Figure 9: Normalization of the values of the intra-articular space widths assessed by the repeated CBCT, taken with a splint in the oral cavity. clinical case are reported in Figures 4 and 9). The final value is determined as mean and standard deviation of the whole sample of measurements. The study by [PERSON] (1966) was performed on 300 joints from 150 subjects aged 16 to 35 years (68 men, 82 women) with different types of occlusion: physiological occlusion (orthognathia--60, straight--14, progenia--11, biprognathia--5) and abnormal occlusion (progenia--20, prognathia--18, deep--12, macrognathia--2, micrognathia--3, partial adenia--3, open--2). The author identified four types of temporomandibular joints, according to the shape of the condyles, to the height of the articular tubercle, to the height and width of the glenoid cavity, to the condyle position in the glenoid fossa, and to the inclination of the back slope of the articular tubercle. That study established that there is no association between the type of joint and the type of occlusion; however, it was determined that type I of TMJ is more common for orthognathic bite, and those data are considered reference physiological values. For that type of joint (called the type I joint), the average size of the anterior part of the gap (anterior articular width) is 2-3 mm, the upper part is 3-4 mm (upper articular width), and the distal part is 3-5 mm (posterior articular width). The Avantis3D software is set on these data, but also allows the clinician to manually adjust the automatically set mandibular position, by moving the corresponding sliders to control the position in the three planes of coordinate system, or by moving the virtual mandible in accordance with the inclination of the articular tubercle slope or in the direction of the articular path. In the present case report, hinge axes were built between medial poles of the condyles, according to [PERSON] (2014), but the software allows the clinician to change the hinge axis position. After repositioning of the condyle, the parameters of the condyle's paths are automatically determined by the software as well, according to the patented method (2014), or set arbitrarily in accordance with the data obtained with an axiography. The achieved mandibular position could be easily reproduced in CAD modeling of prosthetics, or otherwise registered in a traditional way by using silicone pads, which require to be cut into two halves and alternatively inserted on the dentition while recording the bite on the opposite side.