Publications by authors named "M Rosentritt"
This in vitro study investigated how varying magnifications (5×, 10×, 20×, and 50×) using a confocal laser scanning microscope (CLSM) influence the measured surface roughness parameters, R/S and R/S, of various materials with two surface treatments. Cylindrical specimens (d ≈ 8 mm, h ≈ 3 mm, = 10) from titanium, zirconia, glass-ceramic, denture base material, and composite underwent diamond treatment (80 μm; wet) and polishing (#4000; wet; Tegramin-25, Struers, G). The surface roughness parameters (R/S, R/S) were measured with a CLSM (VK-100, Keyence, J) at 5×, 10×, 20×, and 50× magnifications.
View Article and Find Full Text PDF3D printing as an additive manufacturing method has proven to be of great interest for the computerized production of oral splints. Various parameters must be taken into consideration when assessing the durability of oral splints in a wet environment, such as the mouth. The aim of this in vitro study was to assess the wear behavior and water sorption of two 3D-printed splint materials depending on their building orientation and post-processing parameters.
View Article and Find Full Text PDFObjectives: To investigate the survival rates and fracture resistance of dentures made from different teeth (milled, 3D-printed, fabricated), bases (milled, 3D-printed, pressed) and bonding combinations.
Materials And Methods: Specimens (11 groups, n = 8 per group) were fabricated from combinations with a denture tooth (anterior tooth 21) and a denture base material. The groups consisted of combinations of teeth (6x), denture base materials (5x) and adhesive bonding options (4x).
Article Synopsis
- The study evaluated the effectiveness of various cements for securing implant restorations, including a temporary zinc-oxide cement, a resin-modified glass ionomer cement, and a resin-based, eugenol-free cement.
- Results showed that the resin-modified glass ionomer cement had the highest retention forces, followed by the resin-based cement, with the zinc-oxide cement having the lowest retention.
- While all cements offered adequate retention, the resin-based cement required more effort for removal compared to the other two, indicating potential challenges in future procedures.
Article Synopsis
- Lab-made abutments and zirconia crowns need to be disinfected before use, and this study focused on how different cleaning and aging methods affect the bond strength between materials.
- Cleaning methods like autoclaving improved the bond strength significantly compared to no cleaning and other disinfection methods.
- Over time, while autoclaving provides an initial advantage in bond strength, the difference narrows as the materials age, showing no significant changes with different zirconia types or aging methods.