Direct Inkjet Printing of Dental Prostheses Made of Zirconia

2009 ◽  
Vol 88 (7) ◽  
pp. 673-676 ◽  
Author(s):  
J. Ebert ◽  
E. Özkol ◽  
A. Zeichner ◽  
K. Uibel ◽  
Ö. Weiss ◽  
...  
Keyword(s):  
Inkjet Printing ◽  
Solid Content ◽  
The Novel ◽  
Dental Restorations ◽  
Drop On Demand ◽  
Dental Prostheses ◽  
All Ceramic ◽  
Cad Cam ◽  
3D Printed ◽  
Limited Accuracy

CAD/CAM milling systems provide a rapid and individual method for the manufacturing of zirconia dental restorations. However, the disadvantages of these systems include limited accuracy, possible introduction of microscopic cracks, and a waste of material due to the principle of the ‘subtractive process’. The hypothesis of this study was that these issues can be overcome by a novel generative manufacturing technique, direct inkjet printing. A tailored zirconia-based ceramic suspension with 27 vol% solid content was synthesized. The suspension was printed on a conventional, but modified, drop-on-demand inkjet printer. A cleaning unit and a drying device allowed for the build-up of dense components of the size of a posterior crown. A characteristic strength of 763 MPa and a mean fracture toughness of 6.7 MPam0.5 were determined on 3D-printed and subsequently sintered specimens. The novel technique has great potential to produce, cost-efficiently, all-ceramic dental restorations at high accuracy and with a minimum of materials consumption.

Study of Machinable Dental Glass Ceramics

2009 ◽  
Vol 620-622 ◽  
pp. 575-578 ◽  
Author(s):  
Xin Pei Ma ◽  
Guang Xin Li ◽  
Zhi Hao Jin ◽  
Ji Hua Chen ◽  
Mao Ju Yang ◽  
...  
Keyword(s):  
Glass Ceramics ◽  
Orthogonal Experimental Design ◽  
Computer Assisted ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dental Restorations ◽  
Computer Assisted Design ◽  
All Ceramic ◽  
Cad Cam ◽  
Good Biocompatibility

Glass-ceramics are especially useful for the dental restorations because of their good biocompatibility, chemical stability, aesthetic, mechanical strength and wear resistance. The aim of this work was to obtain one mica glass-ceramic, which can be easily used for rapid machining into all-ceramic tooth with computer assisted design/computer assisted manufacture (CAD/CAM) devices. In the study, on the base of low melting machinable fluorosilicic mica glass ceramics, the effects of CeO2 and Fe2O3 in SiO2-B2O3-K2O-Na2O-Li2O-Al2O3-MgO-F system on color were studied. By orthogonal experimental design, the effects of crystallized parameters on the color, three point flexural strength and machinability of the glass ceramics were obtained, and the samples were analyzed by differential thermal analysis(DTA), X-ray diffraction (XRD) and scanning electron microscopy(SEM), respectively. Experimental results showed that the glass-ceramics with color close to the tooth can be obtained by adjusting the percentage of CeO2 and Fe2O3, and the glass-ceramics crystallized at 680°C for 2h have excellent mechanical properties and machinability.

scholarly journals 3D printed complete removable dental prostheses: a narrative review

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Eva Anadioti ◽  
Leen Musharbash ◽  
Markus B. Blatz ◽  
George Papavasiliou ◽  
Phophi Kamposiora
Keyword(s):  
3D Printing ◽  
Clinical Performance ◽  
Case Reports ◽  
Complete Dentures ◽  
Exclusion Criteria ◽  
Digital Dentistry ◽  
Dental Prostheses ◽  
Removable Dental Prostheses ◽  
Cad Cam ◽  
3D Printed

Abstract Background The purpose of this paper is to review the available literature on three-dimensionally printed complete dentures in terms of novel biomaterials, fabrication techniques and workflow, clinical performance and patient satisfaction. Methods The methodology included applying a search strategy, defining inclusion and exclusion criteria, selecting studies and forming tables to summarize the results. Searches of PubMed, Scopus, and Embase databases were performed independently by two reviewers to gather literature published between 2010 and 2020. Results A total of 126 titles were obtained from the electronic database, and the application of exclusion criteria resulted in the identification of 21 articles pertaining to printed technology for complete dentures. Current innovations and developments in digital dentistry have successfully led to the fabrication of removable dental prostheses using CAD/CAM technologies. Milled dentures have been studied more than 3D printed ones in the currently available literature. The limited number of clinical studies, mainly case reports, suggest current indications of 3D printing in denture fabrication process to be custom tray, record bases, trial, interim or immediate dentures but not definitive prostheses fabrication. Limitations include poor esthetics and retention, inability to balance occlusion and low printer resolution. Conclusions Initial studies on digital dentures have shown promising short-term clinical performance, positive patient-related results and reasonable cost-effectiveness. 3D printing has potential to modernize and streamline the denture fabrication techniques, materials and workflows. However, more research is required on the existing and developing materials and printers to allow for advancement and increase its application in removable prosthodontics.

scholarly journals CAD/CAM All Ceramic Dental Restorations on Implants: A Panacea or a Challenge?

2010 ◽  
Vol 30 (1) ◽  
pp. 42-49 ◽  
Author(s):  
Yukimichi TAMAKI ◽  
Yasuhiro HOTTA ◽  
Jun KUNII ◽  
Soichi KURIYAMA ◽  
Daisuke HIGUCHI ◽  
...  
Keyword(s):  
Dental Restorations ◽  
All Ceramic ◽  
Cad Cam

scholarly journals Influence of the Printing Angle and Load Direction on Flexure Strength in 3D Printed Materials for Provisional Dental Restorations

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3376
Author(s):  
Paula Derban ◽  
Romeo Negrea ◽  
Mihai Rominu ◽  
Liviu Marsavina
Keyword(s):  
Statistical Analysis ◽  
Testing Machine ◽  
Load Direction ◽  
Flexure Strength ◽  
Three Point Bending ◽  
Dental Restorations ◽  
Frequent Use ◽  
Cad Cam ◽  
3D Printed ◽  
Printed Materials

The CAD/CAM techniques, especially additive manufacturing such as 3D printing, constitute an ever-growing part of obtaining different dental appliances and restorations. Of these, provisional restorations are of frequent use in daily dental practice and are the object of this study. Masticatory and parafunctional forces determine flexure on these prostheses. This study investigates the influence of the printing angle and loading direction of the applied force on the flexure strength of two commercially available printable resins—Detax Freeprint Temp and Nextdent MFH Vertex dental. Ten rectangular beam specimens printed at the angle of 0, 45 and 90 degrees were fabricated of each of these materials, with an addition of 10 at 0 degrees for the investigation of the load direction. Three-point bending tests were performed in a universal testing machine. Flexure strength, strain at break and Young’s modulus were determined and a statistical analysis was performed on the obtained data. According to the statistical analysis, the flexural strength has a significance dependence with respect to degrees of orientation, for both investigated materials.

scholarly journals Optimized sintering and mechanical properties of Y-TZP ceramics for dental restorations by adding lithium disilicate glass ceramics

2021 ◽  
Author(s):  
Ke Li ◽  
Jiancun Rao ◽  
Congqin Ning
Keyword(s):  
Sol Gel ◽  
Tetragonal Zirconia ◽  
Glass Ceramics ◽  
Lithium Disilicate ◽  
The Novel ◽  
Dental Ceramics ◽  
Abnormal Growth ◽  
Dental Restorations ◽  
All Ceramic ◽  
Ceramic Restorations

AbstractThe novel dental ceramics can be fabricated at lower temperatures when sol-gel derived lithium disilicate glass ceramics (LDGC) was used as an additive for yttria stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics. The effect of LDGC on the sintering, mechanical, and translucent properties of Y-TZP ceramics was investigated in the present study. The results showed that the LDGC additive effectively improved the densification of Y-TZP at 1100 °C, which was much lower than the sintering temperature for pure Y-TZP. When sintered at 1100 °C, the Y-TZP with 1 wt% LDGC reached a relative density of 95.45%, and prossessed a flexural strength of 482.4 MPa and a fracture toughness of 5.94 MPa·m1/2. Moreover, its translucency was also improved. While, the addition of LDGC could result in an escape of yttrium atoms from the grain lattice of zirconia, which induced the tetragonal-monoclinic transformation of zirconia and abnormal growth of monoclinic grains. The escaped yttrium atoms diffused into the intergranular glass phase. The results indicated that the novel Y-TZP-LDGC ceramics has a great potential to be used for all-ceramic restorations.

scholarly journals CAD-CAM complete removable dental prostheses: a double-blind, randomized, crossover clinical trial evaluating milled and 3D-printed dentures

2021 ◽  
pp. 103842
Author(s):  
Murali Srinivasan ◽  
Nicole Kalberer ◽  
Nicolas Fankhauser ◽  
Manuel Naharro ◽  
Sabrina Maniewicz ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Double Blind ◽  
Dental Prostheses ◽  
Removable Dental Prostheses ◽  
Cad Cam ◽  
3D Printed

Fabrication of 3D Temperature Sensor Using Magnetostrictive Inkjet Printhead

2020 ◽  
Vol 64 (5) ◽  
pp. 50405-1-50405-5
Author(s):  
Young-Woo Park ◽  
Myounggyu Noh
Keyword(s):  
Flexible Electronics ◽  
Inkjet Printing ◽  
Temperature Sensor ◽  
Computer Aided Design ◽  
Low Cost ◽  
Three Dimensional ◽  
Drop On Demand ◽  
Aided Design ◽  
Nanoparticle Ink ◽  
Inkjet Printhead

Abstract Recently, the three-dimensional (3D) printing technique has attracted much attention for creating objects of arbitrary shape and manufacturing. For the first time, in this work, we present the fabrication of an inkjet printed low-cost 3D temperature sensor on a 3D-shaped thermoplastic substrate suitable for packaging, flexible electronics, and other printed applications. The design, fabrication, and testing of a 3D printed temperature sensor are presented. The sensor pattern is designed using a computer-aided design program and fabricated by drop-on-demand inkjet printing using a magnetostrictive inkjet printhead at room temperature. The sensor pattern is printed using commercially available conductive silver nanoparticle ink. A moving speed of 90 mm/min is chosen to print the sensor pattern. The inkjet printed temperature sensor is demonstrated, and it is characterized by good electrical properties, exhibiting good sensitivity and linearity. The results indicate that 3D inkjet printing technology may have great potential for applications in sensor fabrication.

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