## 3 Results  
The first follow-up CBCT examination was performed after twelve months. A progressive remodeling of the bone block with its perfect adherence to the bone was visible. The correct arch curvature was also restored, and a significant increase in the volume of the bone covering the roots of the teeth was achieved. The clinical examination showed no signs of inflammation or recession at that time. Probing depth did not change significantly. There was no calculus and no bleeding on probing (Figure 10).  
Another follow-up radiographic examination two years after the reconstruction procedure revealed the complete remodeling of the allogeneic material, as well as the formation of the vestibular cortical layer, despite the fact that the surgical procedure used a block that only consisted of cancellous bone. The correct morphology of the mandibular alveolar part was restored with a significant reduction in dehiscence. Clinically, there were no signs of inflammation or gingival recession, and the correct depth of the oral vestibule was maintained. The lower incisors and canines did not show excessive mobility.  
Figure 9: Reposition and suturing of the soft tissue without extensive tension.  
In order to assess the scope of the reconstruction, radiological measurements of the width of the mandibular alveolar bone were performed in the sagittal plane both before the reconstruction procedure and after two years (Figures 11-13). Both CBCT examinations were performed using the same equipment and the same imaging parameters. Measurements were taken at certain adopted reference points within the area of tooth 31 (medial left incisor in the mandible). The reference lines were set perpendicular to each other, with one of them being along the long axis of the tooth's root.  
Figure 11: CBCT image two years after the surgical treatment—three-dimensional reconstruction.  
Figure 10: Clinical follow-up picture showing proper occlusion, the adequate amount of keratinized gingiva, effect of gingival recession coverage with the correct vestibule height as well as lack of calculus and advanced alveolar concaves and concavities. There was only a slight reddening of the gingiva in area 42 associated with a small loose bone fragment resulting from the remodeling of the graft.  
Figure 12: CBCT image two years after the surgical treatment—axial view.  
Figure 13: _Cont._  
The comparison of the baseline dimensions and those at the end of the follow-up were as follows:  
* The bone width at the half-length from the cementoenamel junction, minus 2 mm, (CEJ-2) to the apex: 6.1 mm before surgery, 6.3 mm after surgery; difference +0.2 mm;
* The bone width at the quarter-length from the CEJ-2 to the apex: 5.9 mm before surgery, 5.9 mm after surgery; difference 0 mm;  
Figure 13: (**a,b**) Comparison of the CBCT scans (sagittal view) before the procedure and two years after the surgical treatment. Before and after images at the same location, the same threshold level is used.  
* Bone width measured at the height of the apex: 7 mm before the procedure, 7.3 mm after the procedure; difference + 0.3 mm;
* Bone dehiscence from the vestibular side (calculated from the CEJ-2 point): 7.5 mm before the procedure, 1 mm after the procedure; difference \(-\)6.5 mm.  
The final dimensions after the observation period were not only influenced by the reconstruction procedure, but also by the orthodontic movement of the teeth (Figure 13a,b).