## 3 Results
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & **Group** & **N** & **Mean** & **Std. Deviation** & _p-Value_ \\ \hline \multirow{2}{*}{Tb.N} & control & 11 & 0.000063 & 0.000031 & \multirow{2}{*}{0.000 \#} \\ \cline{2-5}  & graft & 11 & 0.000146 & 0.000033 & & \\ \hline \multirow{2}{*}{Tb.Th} & control & 11 & 1434.939047 & 438.8888922 & \multirow{2}{*}{0.008 \#} \\ \cline{2-5}  & graft & 11 & 1955.611961 & 352.968780 & & \\ \hline \multirow{2}{*}{Po(tot)} & control & 11 & 90.506451 & 6.117680 & \multirow{2}{*}{0.000 \#} \\ \cline{2-5}  & graft & 11 & 71.988287 & 7.424913 & & \\ \hline \multirow{2}{*}{BS/BV} & control & 11 & 0.004826 & 0.002249 & \multirow{2}{*}{0.008 \#} \\ \cline{2-5}  & graft & 11 & 0.002607 & 0.000707 & & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Bone morphometric characteristics were analysed by CTAn software according to the manual Bruker MicroCT Morphometric parameters measured by CT-analyzer software 1.15.4.0 by Bruker microCT. Abbreviations: One-way ANOVA test (#), independent-samples Mann-Whitney-U test (#). Figure 2: One year follow-up CBCT images: (**a**) Control healed without significant MBL loss, new bone is homogenous, layered by continuous cortical; (**b**) Control healed with more than 3 mm MBL loss, new bone is homogenous, layered by fenestrated cortical; (**c**) Grafted socket regenerated by the homogenous bone formation and lack of cortical layer; (**d**) Grafted socket regenerated by homogenous bone formation with visible graft remnants and layered by fenestrated cortical. Figure 4: Alveolar ridge dimension changes at 1-year follow-up: (1) vertical buccal bone reduction, (2) horizontal bone reduction (control) and gain (graft) at 3 mm depth; (3) horizontal bone reduction (control) and gain (graft) at 5 mm depth. All data are presented as mean \(\pm\) SD, Statistical significance (\(p<0.05\)) was marked by an asterisk. Figure 3: One year micromorphometry analysis: (**a**) trabecular number (Tb.N) is the total number of trabeculae per unit of length; (**b**) trabecular thickness (Tb.Th) indicates the mean thickness of trabeculae; (**c**) total porosity (Po(tot)) shows the total number of open and closed pores; (**d**) bone surface/volume ratio (BS/BV) refers to the volume ratio of calcified tissues; control: \(n=11\), graft: \(n=11\). All data are presented as mean \(\pm\) SD. Statistical significance (\(p<0.05\)) was marked by an asterisk. The MBL loss was significantly higher in the control group at the distal site of the second molar (control: 2.85 \(\pm\) 1.27 mm, graft: 1.24 \(\pm\) 0.55, \(p\) < 0.05) (Figure 5A, Table 4). The MBL gain was examined from the aspect of the preoperative MBL and the proximity of the third molar to the second molar. When the preoperative MBL loss was less than 3 mm, both control and graft groups showed similar slight MBL gain. It was significantly different when preoperative MBL loss was more than 3 mm, and thus resulted in a pocket. When bone graft was applied, all eight pockets healed, and the MBL loss reduced to less than 3 mm. Without grating, the MBL did not change remarkably, and five from eight pockets persisted 1 year postoperatively. A similar tendency could be seen when the proximity of the second and third molar was observed. When they were in direct contact without persisted interalveolar septum, grafting resulted in spectacular MBL gain compared to control. When the interalveolar septum was preserved between the second and third molar, there was a non-significant difference in the MBL gain comparing the two groups. The difference between the pre-and postoperative MBL is visualized in Figure 5b,c. All MBL data showed normal distribution with Shapiro-Wilk test, thus significance between groups was validated by One-way ANOVA test. The angulation and depth of impaction of the third molar did not show correlation with the postoperative MBL.