Classification of the experimental groups
| Method (Type) | No. | ||
|---|---|---|---|
| Group ST | Conventional method | Dental stone pouring | 10 |
| Group PO | 3D printer | Polyjet | 10 |
| Group DL | 3D printer | Digital Light Processing | 10 |
| Group SL | 3D printer | Stereolithography | 10 |
ST: Type Ⅳ dental stone, PO: PolyJet, DL: Digital Light Processing, SL: Stereolithography.
Total of 10 specimens were fabricated in each group (Table 1, Fig. 1A: Type Ⅳ dental stone, Fig. 1B: Polyjet, Fig. 1C: DLP, Fig. 1D: SLA).
