4 results listed
Bioprinting technology, one of the three-dimensional printing technologies, is continuously
developing with the studies carried out every day and it is becoming more important in the
construction of functional tissue scaffolds with different properties in the field of tissue engineering. In
the construction of tissue scaffolds, the studies on bioink which is component of bioprinters is very
important. It is very important to study on production of processable bioink for production of tissue
scaffolds with the desired mechanical, chemical, biological and surface properties and/or to be used
for direct printing with cells. Properly printable bioink production will increase the possibility of using
bioprinters in tissue engineering studies and will enable us to respond to the needs of tissue
engineering. In this study, bioceramic powders based on calcium phosphate (CaP), poly(vinyl alcohol)
(PVA) and different growth factors are used to produce a suitable bioink for use in bone tissue
engineering applications. It is aimed to enable the printing of bone tissue with the bioprinters with
desired feature of material produced in this project. This study provides a solution to the lack of bioink
alternative for the professionals using the bioprinting method.
International Congress on 3D Printing (Additive Manufacturing) Technologies and Digital Industry
3D-PTC2019
Mert Gezek
Fatih Çiftçi
Cem Bülent Üstündağ
Patients may face challenges of taking medication in good order. Implantable, biodegradable drug
delivery systems are useful options with minimum side effects in these cases. A lot of parameters can
be adjusted in the systems. The two main components of the systems are the active ingredient and the
polymeric support material which supports the active ingredient. Poly(lactic acid) (PLA) is one of the
suitable polymers as a support material for many different aspects. In addition to this, PLA can be
easily printed by 3D printers. Therefore, one of the most promising technologies that can be used with
the implantable biodegradable drug delivery system is 3D printer technology. Aim of this study is to
offer implantable and biodegradable PLA that would be placed on the skin beneath as a drug support
material with tailoring morphological features that drug is loaded in different architectures for
implantable drug delivery systems, especially controlled drug delivery by using a 3D modeling
program that is SolidWorks, and Fused Deposition Modeling (FDM) technology for 3D printing.
Some of models were printed.
International Congress on 3D Printing (Additive Manufacturing) Technologies and Digital Industry
3D-PTC2019
Aleyna KUCUKAY
Mert Gezek
Cem Bülent Üstündağ
Three-dimension(3D) printer using Fused Deposition Modeling (FDM) can be efficiently and quickly
produced scaffold for the treatment of bone defects or injury. We carried out that bio-composite
material(CaSO4/PLA) like natural bone substitute was obtained via extruder and biocomposite
material filament in the ratio of 10:90 was produced to be suitable 3D-printer. Also, this work focused
design of the 3D bone structure to print by using poly (lactic acid) (PLA) filament consist of about
%10 Calcium Sulfate. The obtained bio-composite filament was characterized by thermogravimetric
analysis (TGA) and Differential Scanning Calorimetry (DSC). Therefore, CaSO4/PLA scaffolds
fabricated via FDM 3D-printer by using a filament.
International Congress on 3D Printing (Additive Manufacturing) Technologies and Digital Industry
3D-PTC2019
Ayse KAPLAN
Fatih CIFTCI
Mert Gezek
Cem Bülent Üstündağ
In this study, the effect of the direction of the printing and annealing process on mechanical
properties of 3D printed PLA samples were investigated based on fatigue performance. The tensile-
fatigue properties of the tensile specimen which is produced from PLA by 3D printing in the face-up
(X), edge-up (Y) and up-right (Z) direction were investigated in three different orientations. The
elastic modulus was highest in the Y orientation and lowest in the Z orientation. In addition, the
effect of annealing process on mechanical properties was investigated by applying annealing at 50
°C, 70 °C, 90 °C to the samples printed in the same direction (face-up). Mechanical properties
increased with heat treatment. Mechanical strength was highest at 90 °C.
International Congress on 3D Printing (Additive Manufacturing) Technologies and Digital Industry
3D-PTC2019
Fatih CIFTCI
Mert Gezek
Cem Bülent Üstündağ