Effect Of Three Different Pick Up Retaining Materials On Flexural Strength Of A 3D printed Overdenture Base In A Single Implant Retained Mandibular Overdenture: An In- Vitro Study.

Document Type : Original Article

Authors

Department of Prosthodontics, Faculty of Dentistry, Cairo University, Egypt

10.21608/adjc.2025.317503.1626

Abstract

Abstract
Aim: Comparing three chair-sided pickup retaining materials (bis acryl auto polymerized composite, improved methyl methacrylate free self-curing hard reline and self-cured poly methyl methacrylate) in terms of their effect on the flexural strength of 3D printed overdenture base for chairside attachment pick up which simulate clinical condition of a midline implant mandibular overdenture.
Methodology: In this in-vitro study, a total of 36 denture base blocks 64x10x4mm ([ISO] standard 1567) with a hollow were digitally designed and 3D printed mimicking the overdenture base ,then equally divided between three different pick up materials, all samples were picked up and subjected to thermal cycling (5000 cycles) prior to 3 point bending test to compare flexural strength.
Results: The results showed that the auto-polymerized acrylic resin group exhibited much higher flexural values than the other groups. There was insignificant difference among the other groups.
Conclusion: When auto-polymerizing acrylic resin group (Acrostone) was used as a pick-up material, the flexural strength of a 3D printed overdenture base was significantly higher than when a hard reline (Gc reline) and auto-polymerized composite Resin (Luxa) were used.

Keywords

Main Subjects

Files

Share

How to cite

Statistics