## 3 Results
However, for the positional deviations at the implant apex (Figures 7b and 8b) as well as the angular deviations (Figure 9b), implants placed by experienced operators tended to have larger deviations than inexperienced operators, especially at the right first molar and right second molar sites. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Operator Experience Group**} & \multirow{2}{*}{**Implant Number**} & \multicolumn{2}{c}{**Implant Platform**} & \multicolumn{2}{c}{**Implant Apex**} & \multicolumn{1}{c}{**Depth**} & \multicolumn{1}{c}{**Angular**} \\ \cline{3-8}  & & **Global** & **Lateral** & **Global** & **Lateral** & **Deviation** & **Deviation** \\  & & **(mm)** & **(mm)** & **(mm)** & **(mm)** & **(mm)** & **(Degree)** \\ \hline Total & 90 & \(0.71\pm 0.39\) & \(0.50\pm 0.36\) & \(1.20\pm 0.87\) & \(1.06\pm 0.87\) & \(0.41\pm 0.33\) & \(3.44\pm 3.00\) \\ (range) & & (0.08–2.49) & (0.03–1.95) & (0.17–4.33) & (0.05–4.09) & (0.01–1.55) & (0.13–15.75) \\ Experienced & & \(0.74\pm 0.36\) & \(0.54\pm 0.37\) & \(1.30\pm 0.93\) & \(1.17\pm 0.96\) & \(0.40\pm 0.29\) & \(3.86\pm 3.43\) \\ (range) & & (0.21–1.73) & (0.03–1.61) & (0.28–4.33) & (0.18–4.09) & (0.01–1.17) & (0.86–15.75) \\ Inexperienced & & \(0.68\pm 0.42\) & \(0.47\pm 0.34\) & \(1.09\pm 0.79\) & \(0.94\pm 0.77\) & \(0.42\pm 0.37\) & \(3.02\pm 2.47\) \\ (range) & & (0.08–2.49) & (0.03–1.95) & (0.17–4.32) & (0.05–3.95) & (0.07–1.55) & (0.13–11.57) \\ \(p\) Value a  & & 0.4824 & 0.3316 & 0.2520 & 0.2233 & 0.8014 & 0.1870 \\ \(p\) Value b  & & 0.4808 & 0.3341 & 0.2547 & 0.2258 & 0.7977 & 0.1883 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Deviations between planned and placed implant position, by operator experience. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Operator Experience Group**} & \multirow{2}{*}{**Implant Number**} & \multicolumn{2}{c}{**Implant Platform**} & \multicolumn{2}{c}{**Implant Apex**} & \multicolumn{1}{c}{**Depth**} & \multicolumn{1}{c}{**Angular**} \\ \cline{3-8}  & & **Global** & **Lateral** & **Global** & **Lateral** & **Deviation** & **Deviation** \\  & & **(mm)** & **(mm)** & **(mm)** & **(mm)** & **(mm)** & **(Degree)** \\ \hline
**Left first molar** & & & & & & & \\ Experienced & 15 & \(0.74\pm 0.41\) & \(0.48\pm 0.42\) & \(1.24\pm 0.88\) & \(1.09\pm 0.93\) & \(0.49\pm 0.26\) & \(3.57\pm 2.97\) \\ Inexperienced & 15 & \(0.67\pm 0.43\) & \(0.44\pm 0.28\) & \(1.17\pm 0.77\) & \(1.02\pm 0.72\) & \(0.45\pm 0.39\) & \(3.41\pm 2.51\) \\ \(p\) Value t  & & 0.6662 & 0.7745 & 0.8063 & 0.8293 & 0.7622 & 0.8685 \\ \(p\) Value t  & & 0.5338 & 1.0000 & 0.8357 & 1.0000 & 0.3195 & 1.0000 \\ \hline
**Right first molar** & & & & & & & \\ Experienced & 15 & \(0.72\pm 0.38\) & \(0.51\pm 0.33\) & \(1.39\pm 1.03\) & \(1.24\pm 1.03\) & \(0.43\pm 0.34\) & \(4.26\pm 4.06\) \\ Inexperienced & 15 & \(0.77\pm 0.53\) & \(0.51\pm 0.44\) & \(1.21\pm 0.96\) & \(1.01\pm 0.95\) & \(0.52\pm 0.39\) & \(2.97\pm 2.97\) \\ \(p\) Value t  & & 0.8010 & 0.9872 & 0.6170 & 0.5206 & 0.5366 & 0.3278 \\ \(p\) Value t  & & 0.9069 & 0.6482 & 0.6187 & 0.5614 & 0.6187 & 0.4553 \\ \hline
**Right second molar** & & & & & & \\ Experienced & 15 & \(0.75\pm 0.32\) & \(0.63\pm 0.37\) & \(1.28\pm 0.94\) & \(1.17\pm 0.99\) & \(0.29\pm 0.24\) & \(3.74\pm 3.38\) \\ Inexperienced & 15 & \(0.60\pm 0.29\) & \(0.45\pm 0.28\) & \(0.90\pm 0.63\) & \(0.80\pm 0.64\) & \(0.30\pm 0.29\) & \(2.69\pm 1.94\) \\ \(p\) Value t  & & 0.1833 & 0.1476 & 0.2121 & 0.2285 & 0.9549 & 0.3056 \\ \(p\) Value t  & & 0.1354 & 0.089 & 0.2455 & 0.2998 & 1.0000 & 0.6783 \\ ANOVA \(p\) Value t  & & 0.8723 & 0.7509 & 0.7650 & 0.8044 & 0.2442 & 0.7685 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Deviations between planned and placed implant position according to implant site. Table 4 compares the differences of the measured deviations according to the operator's age, years of the dental practice, and specialty. The operator's age was found to have a significant influence on accuracy.