## 3 Results
### Knowledge About Resin Materials  
#### 3.2.1 Knowledge Levels in Resin Materials and Correlation with Professional Characteristics  
Dentists demonstrated varying levels of knowledge regarding resin restorative materials across several domains. Practical aspects such as application methods and material types scored highest among participants, suggesting that these aspects of resin materials are well understood by the surveyed professionals. The shelf life of resin materials also received a relatively high mean score, indicating moderate familiarity among participants. Conversely, composition and biocompatibility show lower mean scores, which may indicate gaps in knowledge regarding the chemical properties and biological interactions of resin materials. The side effects of resin materials have one of the lowest mean scores, implying a potential area where further education and awareness may be needed (Figure 1). The correlations between various professional characteristics and knowledge regarding different aspects of resin restorative materials are featured in Table 1. The results indicate that age (r = 0.236, \(p\) < 0.05) and clinical experience over five years (r = 0.214, \(p\) < 0.05) are positively correlated with general knowledge about resin materials. Notably, clinical experience also shows significant positive associations with knowledge of material composition (r = 0.230, \(p\) < 0.05) and shelf life (r = 0.223, \(p\) < 0.05), further emphasizing that familiarity with resin materials accumulates with professional practice. \begin{table}
\begin{tabular}{l c c c c c c c c c} \hline \hline  & **Gender (Female vs. Male Dentists)** & **Age (over 45 Years vs. Younger)** & **Dental School** & **Postgraduate Studies in Dentists** & **Clinical Experience (over Years vs. Other)** & **Purchasing Experience (Private Clinic vs. Other)** & **Not** & **Performing over 20 Competitive Resin** & **Rosenspolky for Resin** \\  & **Dentalists** & **Years vs. Younger)** & **Dometisol** & **Dentists** & **vip to 5 Years)** & **Purchase Time/Year** & **Rosenstations** & **Rosenstations per Week** \\ \hline Knowledge about & \multirow{2}{*}{\(-0.152\)} & \multirow{2}{*}{\(0.1236\)\({}^{*}\)} & \multirow{2}{*}{\(0.118\)} & \multirow{2}{*}{\(0.175\)} & \multirow{2}{*}{\(0.214\)\({}^{*}\)} & \multirow{2}{*}{\(0.055\)} & \multirow{2}{*}{\(0.062\)} & \multirow{2}{*}{\(-0.052\)} & \multirow{2}{*}{\(0.195\)} \\ resin & & & & & & & & \\ \hline
1. Composition & \(-0.085\) & \(0.163\) & \(0.118\) & \(0.164\) & \(0.230\)\({}^{*}\) & \(-0.044\) & \(0.061\) & \(-0.153\) & \(0.206\) \\ \hline
2. Electompatibility & \(-0.248\)\({}^{*}\) & \(0.045\) & \(0.158\) & \(0.138\) & \(-0.014\) & \(-0.015\) & \(0.129\) & \(0.098\) & \(0.081\) \\ \hline
3. Side effects & \(-0.084\) & \(0.135\) & \(-0.052\) & \(0.072\) & \(0.033\) & \(-0.041\) & \(0.072\) & \(0.179\) & \(0.041\) \\ \hline
4. Shelf life & \(-0.024\) & \(0.208\) & \(0.116\) & \(0.039\) & \(0.223\)\({}^{*}\) & \(0.170\) & \(0.110\) & \(-0.145\) & \(0.149\) \\ \hline
5. Method of application & \(-0.012\) & \(0.214\)\({}^{*}\) & \(0.107\) & \(0.186\) & \(0.159\) & \(0.028\) & \(-0.164\) & \(0.039\) & \(0.10 Gender does not appear to significantly influence knowledge, except for biocompatibility, where female dentists report significantly lower knowledge scores (r = \(-\)0.248, \(p\) < 0.05) compared to their male counterparts. Interestingly, frequent purchases of resin restorative materials do not significantly correlate with increased knowledge, indicating that purchasing behavior does not necessarily reflect a deeper understanding of the materials. However, dentists performing more than 20 composite resin restorations per week demonstrate a trend towards greater knowledge across most domains, significantly in composition (r = 0.206) and method of application (r = 0.100), though these correlations do not reach statistical significance (Table 1).