Wear Resistance of 3D Printing Resin Material Opposing Zirconia and Metal Antagonists

Abstract

3D printing offers many advantages in dental prosthesis manufacturing. This study evaluated the wear resistance of 3D printing resin material compared with milling and conventional resin materials. Sixty substrate specimens were prepared with three types of resin materials: 3D printed resin, milled resin, and self-cured resin. The 3D printed specimens were printed at a build angle of 0° and 100 μm layer thickness by digital light processing 3D printing. Two kinds of abraders were made of zirconia and CoCr alloy. The specimens were loaded at 5 kg for 30,000 chewing cycles with vertical and horizontal movements under thermocycling condition. The 3D printed resin did not show significant difference in the maximal depth loss or the volume loss of wear compared to the milled and the self-cured resins. No significant difference was revealed depending on the abraders in the maximal depth loss or the volume loss of wear. In SEM views, the 3D printed resin showed cracks and separation of inter-layer bonds when opposing the metal abrader. The results suggest that the 3D printing using resin materials provides adequate wear resistance for dental use.

Dental 3D-Printing: Transferring Art from the Laboratories to the Clinics

“…Moreover, in vitro studies have demonstrated that CoCr materials fabricated by SLM still had clinically acceptable marginal gap between ceramic and metal frameworks and metal-ceramic bond strength even after ceramic firing. This further highlights CoCr alloy as a promising material for 3D printed dental prostheses using 3D printing techniques, such as SLM [ 26 , 47 , 49 , 51 , 52 ].…”

Antibacterial Drug-Release Polydimethylsiloxane Coating for 3D-Printing Dental Polymer: Surface Alterations and Antimicrobial Effects

“…The 3D-printing technology used in dentistry is classified into four main categories: extrusion printing, inkjet printing, laser melting/sintering, and stereolithography printing [ 3 ]. Those printing methods are based on the principle of layered manufacturing, which is more suitable than conventional casting and milling methods for producing individualized complex structures [ 6 ]. Moreover, using a machining process with computer-aided design/computer-aided manufacturing (CAD/CAM) reduces manual labor and material waste [ 1 ].…”

“…Moreover, using a machining process with computer-aided design/computer-aided manufacturing (CAD/CAM) reduces manual labor and material waste [ 1 ]. Recent studies have shown that 3D-printed dental prostheses had a clinically acceptable degree of precision [ 3 , 6 , 7 ].…”

“…Specifically, as the 3D-printed prosthesis is generated layer-by-layer, micropores are created when air is trapped between the layers during the printing process or when the individual layers are incompletely fused [ 9 ]. During clinical occlusal adjustment and clinical use, these micropores are exposed on the surface because of the abrasion of the restorations, potentially becoming a host for bacterial growth [ 6 ]. The risk of material contamination by microorganisms is a critical limitation for the longevity of 3D-printed polymer prostheses [ 3 ].…”

A Feasibility Study for 3D-printed Poly(methyl methacrylate)-resin Tracheostomy Tube Using a Hamster Cheek Pouch Model

“…PCL and PLA are biodegradable synthetic materials for FDM that have superior mechanical strengths, and comparable biocompatibilities (19,20). PMMA-resin is a photo-curable, 3D-printable resin for DLP, which offers many advantages in dental prosthesis manufacturing, such as 3D-printed artificial teeth, denture bases, provisional crowns, and dental bridge material (13,14,(21)(22)(23)(24). As TT is an indwelling catheter placed in the tracheal lumen, chemical and mechanical changes of the tube as well as biofilm formation are important factors for determining safety for clinical application.…”