8th International Congress on 3D Printing (Additive Manufacturing) Technologies and Digital Industry 2024, Antalya, Türkiye, 6 - 08 Eylül 2024, ss.1-10
With advancing technology, progress is also being made in the medical
sector, just as in industry. One of these advancements is the efforts aimed at
ensuring the development of students studying medicine. Among these efforts,
one of the most prominent is those conducted in the field of surgery. Studies
in this direction gain particular importance, especially in various bone
surgeries. Screw fixation on vertebrae is applied in various bone operations
such as fracture treatment of spinal bones and scoliosis treatment. This
treatment is of critical importance both for patients and physicians because
the success of this treatment depends on the success of screw fixation. In
screw fixation, the screw is typically inserted through the pedicle region of
the vertebra, traversing a delicate structure. If the screw protrudes beyond
the pedicle region, it can lead to either fracturing of the vertebral body
(middle column) or, worse, spinal cord injury. In this study, various models
have been produced from hydroxyapatite-reinforced UV-cured photopolymer resins
using vat polymerization, which is one of the 3D printing methods, to produce
trial models to increase this success and present them to physicians. The
sample productions were carried out by selecting three different cellular fill
densities (gyroid) at a filling ratio of one, and screw pull-out tests have
been conducted.