Evaluation of surface roughness and fracture resistance of maxillary conventional & digital complete dentures: An Invitro study | ||||
| Ain Shams Dental Journal | ||||
| Article 6, Volume 34, Issue 2, June 2024, Page 42-48 PDF (988.95 K) | ||||
| Document Type: Original articles | ||||
| DOI: 10.21608/asdj.2024.277269.1231 | ||||
 View on SCiNiTO | ||||
| Author | ||||
Eman Gamal Abdelghaffar  
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| Removable Prosthodontics Department, Faculty of Dentistry, The British University in Egypt | ||||
| Abstract | ||||
| Aim: to evaluate the surface roughness and fracture resistance of complete dentures fabricated using heat cured polymethyl methacrylate (PMMA) resin manufactured by conventional technique & digital complete dentures manufactured by additive manufacturing technique. Materials and Methods: A total of 24 complete dentures were fabricated (n=24), 12 dentures were fabricated using heat cured polymethyl methacrylate (PMMA) resin manufactured by the conventional methods. 12 dentures were designed by Exocad software program & constructed using additive manufacturing technique. Surface roughness was evaluated using optical profilometry. Fracture resistance was evaluated using universal testing machine. Data were analysed using unpaired t-test where α = 0.05. Results: Concerning surface roughness, there was no statistically significant difference between the two groups (P=0.5137). Conventional PMMA dentures showed mean (2.52± 0.14 µm), while 3D-printed dentures showed mean (2.59± 0.38 µm). However, regarding the fracture resistance, there was statistically significant difference between the two groups (P<0.5), the conventional PMMA dentures showed higher mean (572.49± 13.07 N), while the digital dentures showed lesser mean with (202.51 ± 10.35 N). Conclusion: Conventional PMMA dentures and 3D-printed dentures had similar surface roughness. However conventional PMMA dentures had better fracture resistance when compared to 3D-printed dentures. KEYWORDS: Digital dentures, fracture resistance, surface roughness, complete dentures. | ||||
| Keywords | ||||
| Digital dentures; fracture resistance; surface roughness; complete dentures; Exocad software | ||||
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