## 3 Results
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & & **No Postcuring** & **15 min** & **30 min** & **45 min** & **60 min** \\ \hline \multirow{4}{*}{Standard gray resin} & \multirow{2}{*}{Maxilla} & No support & 58.3 \(\pm\) 4.8 \({}^{\text{\AA}}\) & 69.8 \(\pm\) 5.5 \({}^{\text{\AA}}\) & 80.2 \(\pm\) 10.7 \({}^{\text{\AA}}\) & 82.6 \(\pm\) 10.3 \({}^{\text{\AA}}\) & 87.6 \(\pm\) 13.8 \({}^{\text{\AA}}\) \\ \cline{2-7}  & & Support & 58.9 \(\pm\) 5.2 \({}^{\text{\AA}}\) & 64.1 \(\pm\) 5.4 \({}^{\text{\AA}}\) & 66.2 \(\pm\) 2.2 \({}^{\text{\AA}}\) & 70.9 \(\pm\) 5.2 \({}^{\text{\AA}}\) & 72.9 \(\pm\) 3.9 \({}^{\text{\AA}}\) \\ \cline{2-7}  & \multirow{2}{*}{Mandible} & No support & 130.4 \(\pm\) 22.0 \({}^{\text{\AA}}\) & 156.3 \(\pm\) 29.1 \({}^{\text{\AA}}\) & 161.8 \(\pm\) 27.0 \({}^{\text{\AA}}\) & 170.7 \(\pm\) 32.3 \({}^{\text{\AA}}\) & 185.6 \(\pm\) 30.6 \({}^{\text{\AA}}\) \\ \cline{2-7}  & & Support & 124.8 \(\pm\) 26.9 \({}^{\text{\AA}}\) & 140.6 \(\pm\) 37.2 \({}^{\text{\AA}}\) & 145.5 \(\pm\) 40.1 \({}^{\text{\AA}}\) & 151.0 \(\pm\) 39.3 \({}^{\text{\AA}}\) & 148.0 \(\pm\) 38.8 \({}^{\text{\AA}}\) \\ \hline \multirow{4}{*}{MAZIC D resin} & \multirow{2}{*}{Maxilla} & No support & 65.8 \(\pm\) 12.9 \({}^{\text{\AA}}\) & 98.4 \(\pm\) 10.3 \({}^{\text{\AA}}\) & 102.4 \(\pm\) 11.8 \({}^{\text{\AA}}\) & 104.9 \(\pm\) 16.1 \({}^{\text{\AA}}\) & 106.7 \(\pm\) 17.0 \({}^{\text{\AA}}\) \\ \cline{2-7}  & & Support & 72.6 \(\pm\) 14.6 \({}^{\text{\AA}}\) & 83.7 \(\pm\) 14.6 \({}^{\text{\AA}}\) & 95.6 \(\pm\) 16.6 \({}^{\text{\AA}}\) & 101.7 \(\pm\) 18.2 \({}^{\text{\AA}}\) & 104.6 \(\pm\) 19.6 \({}^{\text{\AA}}\) \\ \cline{2-7}  & \multirow{2}{*}{Mandible} & No support & 99.6 \(\pm\) 13.9 \({}^{\text{\AA}}\) & 150.1 \(\pm\) 19.8 \({}^{\text{\AA}}\) & 157.9 \(\pm\) 17.4 \({}^{\text{\AA}}\) & 159.6 \(\pm\) 20.6 \({}^{\text{\AA}}\) & 161.3 \(\pm\) 14.9 \({}^{\text{\AA}}\) \\ \cline{2-7}  & & Support & 99.7 \(\pm\) 13.0 \({}^{\text{\AA}}\) & 107.3 \(\pm\) 14.6 \({}^{\text{\AA}}\) & 105.0 \(\pm\) 15.8 \({}^{\text{\AA}}\) & 105.4 \(\pm\) 18.4 \({}^{\text{\AA}}\) & 105.1 \(\pm\) 17.1 \({}^{\text{\AA}}\) \\ \hline \hline \end{tabular} Different uppercase superscript letters indicate significant differences in RMSE values within columns depending on whether or not the support structure was removed during the postcuring process. Different lowercase superscript letters indicate significant differences in RMSE values within rows according to the postcuring time.  
\end{table} 
Table 2: Root-mean-square error (RMSE) values for standard gray resin and MAZIC D resin specimens according to postcuring time, arch position (maxilla and mandible), and the presence or absence of a support structure. Data are mean \(\pm\) standard deviation values. Figure 5: RMSE values during the postcuring process in the no-support and support groups using standard gray resin. **(A)** Maxilla base. **(B)** Mandible base. Data are mean and standard deviation values. \({}^{\star},p\leq\) 0.05; \({}^{\star\star},p\leq\) 0.01 between the no-support and support groups. Figure 6: RMSE values during the postcuring process in the no-support and support groups using MAZIC D resin. **(A)** Maxilla base. **(B)** Mandible base. Data are mean and standard deviation values. \({}^{\star},p\leq\) 0.05; \({}^{\star\star},p\leq\) 0.001 between the no-support and support groups. When printing denture bases using MAZIC D resin, the dimensional changes in the no-support group were largest after the first 15 min of postcuring for both the maxillary and mandibular bases, after which there were no significant variations in the dimensional changes (Figure 6). In the maxilla group with MAZIC D resin, the dimensions changed during the postcuring process even when the support structure was present, and the errors were in the range of 72.6-104.6 \(\upmu\)m. There was a significant difference between the no-support and support groups only after 15 min of postcuring, with a large initial dimensional change in the no-support group, but no change thereafter.