## 3 Results
The operator group of under 40 years old had smaller deviations in every measured  
Figure 8: Box plots of the lateral deviation at the implant: (**a**) platform and (**b**) apex of experienced and inexperienced operator group. Figure 7: Box plots of the global deviation at implant: (**a**) platform and (**b**) apex of experienced and inexperienced operator group. Figure 9: Box plots of the (**a**) depth deviation and (**b**) angular deviation of experienced and inexperienced operator group. deviation than the other two age groups. Except for the depth deviation, the differences were significant (\(p=0.0068\) for the global deviation of implant apex) or marginally significant (\(p\) values around 0.01) for the other measured deviations. No significant differences could be observed for the years of dental practice and the specialty of the operators. The distributions of the measured deviations according to the operator's age groups were presented in the box plots in Figures 10-12. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{\
\begin{tabular}{c} **Operator** \\ **Variables** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **Implant** \\ **Number** \\ \end{tabular} } & \multicolumn{2}{c}{**Implant Platform**} & \multicolumn{2}{c}{**Implant Apex**} & \multicolumn{1}{c}{**Depth**} & \multicolumn{1}{c}{**Angular**} \\ \cline{3-8}  & & **Global** & **(mm)** & **(mm)** & **(mm)** & **(mm)** & **(mm)** & **(Degree)** \\ \hline
**Total** & 90 & 0.71 \(\pm\) 0.39 & 0.50 \(\pm\) 0.36 & 1.20 \(\pm\) 0.87 & 1.06 \(\pm\) 0.87 & 0.41 \(\pm\) 0.33 & 3.44 \(\pm\) 3.00 \\ \hline
**Age** & & & & & & & \\ \(\leq\)39 & 39 & 0.57 \(\pm\) 0.21 & 0.38 \(\pm\) 0.17 & 0.87 \(\pm\) 0.39  & 0.74 \(\pm\) 0.41 & 0.36 \(\pm\) 0.25 & 2.40 \(\pm\) 1.38 \\
40–49 & 27 & 0.85 \(\pm\) 0.47 & 0.60 \(\pm\) 0.40 & 1.46 \(\pm\) 0.94  & 1.29 \(\pm\) 0.92 & 0.50 \(\pm\) 0.42 & 4.12 \(\pm\) 3.12 \\ \(\geq\)50 & 24 & 0.77 \(\pm\) 0.46 & 0.59 \(\pm\) 0.46 & 1.43 \(\pm\) 1.16  & 1.30 \(\pm\) 1.19 & 0.39 \(\pm\) 0.32 & 4.36 \(\pm\) 4.19 \\ \(p\) Value \(\ddagger\) & & 0.0111 & 0.0175 & 0.0068  & 0.0101 & 0.2207 & 0.0144 \\ \hline
**Gender** & & & & & & & \\ Male & 84 & 0.72 \(\pm\) 0.40 & 0.52 \(\pm\) 0.36 & 1.22 \(\pm\) 0.89 & 1.08 \(\pm\) 0.90 & 0.41 \(\pm\) 0.33 & 3.52 \(\pm\) 3.09 \\ Female & 6 & 0.60 \(\pm\) 0.29 & 0.30 \(\pm\) 0.18 & 0.88 \(\pm\) 0.28 & 0.67 \(\pm\) 0.27 & 0.45 \(\pm\) 0.37 & 2.38 \(\pm\) 0.87 \\ \(p\) Value \(\ddagger\) & & 0.4716 & 0.091 & 0.452 & 0.3608 & 0.728 & 0.728 \\ \hline
**Years of practice** & & & & & & & \\ \(\leq\)10 & 33 & 0.74 \(\pm\) 0.43 & 0.50 \(\pm\) 0.35 & 1.17 \(\pm\) 0.82 & 1.00 \(\pm\) 0.80 & 0.47 \(\pm\) 0.37 & 3.16 \(\pm\) 2.55 \\
11–20 & 24 & 0.58 \(\pm\) 0.30 & 0.42 \(\pm\) 0.26 & 0.99 \(\pm\) 0.65 & 0.88 \(\pm\) 0.66 & 0.33 \(\pm\) 0.27 & 2.91 \(\pm\) 2.39 \\ \(\geq\)21 & 33 & 0.77 \(\pm\) 0.41 & 0.57 \(\pm\) 0.41 & 1.37 \(\pm\) 1.02 & 1.24 \(\pm\) 1.05 & 0.41 \(\pm\) 0.32 & 4.11 \(\pm\) 3.71 \\ \(p\) Value \(\ddagger\) & & 0.1465 & 0.2939 & 0.2562 & 0.2828 & 0.2952 & 0.261 \\ \hline
**Specialty** & & & & & & & \\ Fixed Pros. & 30 & 0.64 \(\pm\) 0.30 & 0.42 \(\pm\) 0.31 & 1.05 \(\pm\) 0.72 & 0.89 \(\pm\) 0.77 & 0.41 \(\pm\) 0.23 & 2.94 \(\pm\) 2.66 \\ OS/Perio. & 24 & 0.68 \(\pm\) 0.38 & 0.49 \(\pm\) 0.37 & 1.19 \(\pm\) 1.00 & 1.06 \(\pm\) 1.01 & 0.36 \(\pm\) 0.32 & 3.62 \(\pm\) 3.63 \\ Others & 36 & 0.78 \(\pm\) 0.46 & 0.58 \(\pm\) 0.37 & 1.33 \(\pm\) 0.88 & 1.19 \(\pm\) 0.86 & 0.44 \(\pm\) 0.40 & 3.74 \(\pm\) 2.85 \\ \(p\) Value \(\ddagger\) & & 0.3278 & 0.2145 & 0.4219 & 0.377 & 0.6598 & 0.5291 \\ \hline \hline \end{tabular}  
* \(p\) Value: ANOVA test,
* \(p\) significant difference by [PERSON] multiple comparisons. \(\ddagger\)[ENDFOOTNOTE]
* \(p\) Value: Wilcoxon rank sum test. Fixed Pros: fixed prosthetics and implantology; OS: oral and maxillofacial surgery; Perio: periodontitis.  
\end{table} 
Table 4: Deviations between planned and placed implant position according to operator variables.