## 3 Results
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Correlation between Years of Experience and** & \multicolumn{2}{c}{**Post orthodontic Specialists**} & \multicolumn{2}{c}{**Dental Technicians**} \\ \cline{2-5}
**the Design/the Material Preferred by the** & **Likelihood** & **Linear-by-Linear** & **Likelihood** & **Linear-by-Linear** \\
**Dectors for Full-Arch Fixed Implant** & **Ratio-\(p\) Value** & **Associations-\(p\) Value** & **Ratio-\(p\) Value** & **Associations-\(p\) Value** \\ \hline \hline Resin material polymerized in the lab, acrylic teeth and the metallic milled framework & 0.0391 & 0.0141 & - & - \\ \hline Full zirconia crowns on implants in maxillary restorations & 0.028 & 0.014 & - & - \\ \hline \hline Milled metallic framework (Ti, Cr-Co) with cemented crowns for the maxillary definitive fixed implant supported prosthesis. & 0.155 & 0.046 & - & - \\ \hline Polymer milled framework (Peek, Pekktton) & & & & \\  with cemented crowns for full-arch fixed implant supported mandibular prosthesis & 0.108 & 0.036 & 0.060 & 0.043 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Correlation between Years of Experience and the Design/the Material Preferred by the Doctors for Total Fixed Implant Supported Prosthesis. As to the growing linear tendency for using the material/the design metallic cast framework with cemented crowns related to the clinical experience, it proves to be significant statistically (\(p\) value = 0.013578); this is the option the experienced doctors have selected. By testing the possible correlation between the design/the material preferred for definitive full-arch fixed mandibular prosthesis and the years of experience in the technician's study group, the answers have revealed a linear tendency close to the significant limit: polymer milled framework (Peek, Pekkton) with cemented crowns and zirconia milled framework with cemented crowns in correlation with the years of experience. * **Frequent complications in fixed prosthodontics with implant support** The most frequent complications (Figure 5) reported by the doctors in the fixed prosthetic treatment with implant support are esthetic issues (65.6%), followed by occlusion problems (58.2%-more than a half of the doctors voted for it). The technicians reported in almost the same percent occlusion and esthetics complications, and in 12.7% problems related to implant compatibility. Regarding the repair request (Figure 6) the first place in the doctor's lot is taken by the esthetic component failure (70.9%). The result seems to correspond to the one from the technician's study group; they have voted the failure of the esthetic component as the most common request for repairing/remaking the fixed partial prosthesis (65.6%), followed by a change of design associated to inserting additional implants (20%). Nevertheless, 61.1% of the doctors don't take any measures for preventing the fracture/failure of the esthetic component in the molar region. (Figure 7) and 50.9% of the Romanian dental technicians don't adopt any methods for preventing this in the posterior zone. By testing the possible correlation between the design/the material preferred for full-arch fixed maxillary prosthesis with implant support and the most frequent situations the doctors request repairing the restoration, the significant statistical association has been  
Figure 6: The most common situations when repairing the fixed prosthesis on implants is required. Figure 7: Methods for preventing breaking/failure of the esthetic plating materials, in the molar region. observed between the reparation due to failure of the esthetic component and the metallic casted framework with cemented crowns used at the maxilla (Table 5). * **The statistical analysis of correlation between the answers to pairs of the questions from the two questionnaires (doctors-technicians)**  
To determine how much the two professionals' perspectives correspond, the Pearson Chi-Square test and the Fisher's Exact test were applied, translating the statistical relevance at 0.05.