Comparative physical and mechanical properties of a 3D printed temporary crown and bridge restorative material.

Background: The objective was to compare physic-mechanical properties of different materials used for temporary restorations.

Material And Methods: Protemp 4/bisacrylic resin, Jet/acrylic resin, and Nexdent C&B/3D-printed resin samples (10mm diameter x 2mm thickness) were analyzed for surface roughness and color stability tests (baseline, after 5 thousand brushing cycles; and after artificial aging in water at 60oC for 24 hours) and Knoop microhardness. All data were checked for normality using Shapiro-Wilk test.

The stamp technique for direct restoration in a ICDAS 4 carious lesion: A 4-year follow-up.

Objective: This case report described the use of a stamping technique associated with a bulk fill composite to restore an ICDAS 4 carious lesion on a posterior tooth. The 4-year follow-up is also presented.

Clinical Considerations: A 32-year-old patient presented a carious lesion on tooth 36 with an underlying dark shadow at the dentin seen from the noncavitated enamel occlusal surface, which was compatible with an ICDAS 4 carious lesion.

Effect of the addition of functionalized TiO nanotubes and nanoparticles on properties of experimental resin composites.

Objective: To evaluate the influence of the addition of functionalized and non-functionalized TiO nanostructures on properties of a resin composite.

Methods: TiO nanostructures were synthesized and functionalized, using 3-(aminopropyl)triethoxysilane (APTMS) and 3-(trimethoxysilyl)propyl methacrylate (TSMPM). Characterizations were performed with XRD, EDS, TEM, and TGA.