effect of adding zirconium dioxide nanoparticles on surface roughness and fracture strength of implant retained mandibular acrylic overdenture: an invitro comparative study | ||
| Egyptian Dental Journal | ||
| Volume 70, Issue 4, October 2024, Pages 3623-3629 PDF (879 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/edj.2024.308969.3141 | ||
| Authors | ||
| Shrouk A. Sharaf* 1; Hussein Abdelhady Hussein Taha2; Ahmad Fathalla Shawky3 | ||
| 1Instructor, Prosthetic Department, Nahda University, Bani-Swif, Egypt | ||
| 2Associate Professor, Prosthodontics Department. Faculty of Dentistry, Minia University | ||
| 3Assistant Professor, Removable Prosthodontics Faculty of Dentistry Beni-Suef University | ||
| Abstract | ||
| ABSTRACT Objectives: Investigate the impact of adding zirconia dioxide nanoparticles (ZrO2 NPs) on the surface roughness and fracture strength of implant-retained acrylic mandibular overdentures. Materials and method: An epoxy resin model of a completely edentulous mandibular arch was poured. Two implants were inserted in the canine regions. Two balls and a socket attachment were attached to these implants. Twelve casts were duplicated from the implant epoxy model and divided into two groups. Group I (Control Group): overdentures were made from heat-cured polymethyl methacrylate (PMMA). Group II (Test Group): overdentures were made from heat-cured PMMA modified by 3% silanized ZrO2 NPs. The surface roughness (Ra) was measured by a contact stylus profilometer in micrometers (μm). A universal testing machine was used to measure fracture strength. Results: The results of this study revealed a significant increase in the surface roughness of the tested group, while the results demonstrated insignificant differences between the two groups in fracture strength. Conclusion: The addition of 3% silanized ZrO2 NPs to implant-retained acrylic overdentures enhances the mechanical properties of the denture base; however, the thickness of the denture base is to be considered. | ||
| Keywords | ||
| Silanized ZrO2 NPS; PMMA; implant retained overdenture; surface roughness; fracture strength | ||
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