3D Printing of a Graphene-Modified Photopolymer Using Stereolithography for Biomedical Applications: A Study of the Polymerization Reaction.

Additive manufacturing is gaining importance thanks to its multiple advantages. Stereolithography (SLA) shows the highest accuracy and the lowest anisotropy, which has facilitated the emergence of new applications as dentistry or tissue engineering. However, the availability of commercial photopolymers is still limited, and there is an increasing interest in developing resins with properties adapted for these new applications.

Advances in Biodegradable 3D Printed Scaffolds with Carbon-Based Nanomaterials for Bone Regeneration.

Bone possesses an inherent capacity to fix itself. However, when a defect larger than a critical size appears, external solutions must be applied. Traditionally, an autograft has been the most used solution in these situations.

Ultrasound evaluation of lumbar spine anatomy in newborn infants: implications for optimal performance of lumbar puncture.

An ultrasound evaluation of lumbar spine anatomic landmarks relevant for lumbar puncture was performed in 199 newborn infants. Effects of 6 patient positions and gestational age on interspinous process distance, subarachnoid space width, predicted needle entry angle, and needle insertion depth were assessed. Our results identify optimized conditions for lumbar puncture: sitting the infant with hips flexed, a needle entry angle of 65-70 degrees, and proper needle insertion depth (calculated as 2.