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Dentistry Journal
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3D Printing in Dentistry
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3D Printing in Dentistry

A special issue of Dentistry Journal (ISSN 2304-6767). This special issue belongs to the section "Digital Technologies".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 12310

Special Issue Editor

Dr. Gerald T. Grant

E-Mail Website
Guest Editor
Interim Asst Dean for Advanced Technologies and Innovation, Interim Director of the Advanced Education Program in Prosthodontics, Professor of Prosthodontics, University of Louisville School of Dentistry, and Associate Director, Additive Manufacturing Institute for Science and Technology, Speed Engineering School, University of Louisville, Louisville, KY 40292, USA
Interests: 3d printing; additive manufacturing; digital dentistry; printed medical models; medical devices; validation and quality control; complex dental reconstruction; maxillofacial prosthetics

Special Issue Information

Dear Collogues,

Advances in medical/dental imaging technologies and digital design software has resulted in the innovative use of 3d printing of surgical guides, medical models, educational phantoms, and patient specific devices. We continue to see advances in 3d printing technologies, the materials available, and better access to design software. In addition, there is a growing number of examples of 3D printing for use in both the medical and dental in the professional literature. There is no doubt that this technology has allowed for more patient specific devices in healthcare with more predictable results from reconstruction to quality of life.  However, there are still some questions about workflow and validation of the printed devices in best practices.  This special issue is dedicated to the use of digital imaging, digital design, and additive manufacturing of both medical and dental devices for customized patient care. We invite you to submit a manuscript for the forthcoming Special Issue “3D Printing for Patient Specific Healthcare” in the Dentistry Journal

Possible topics for this Special Issue include but are not limited to the following:

  • Accuracy of 3D printed models
  • Materials for 3D printed dentures
  • Digital design for dental prosthesis
  • Subtractive vs Additive manufacturing in Dentistry
  • Design and fabrication workflow
  • Post- Processing of 3d printed prosthesis
  • Use of 3D printing for educational models
  • How to choose the best 3D printing technology
  • Quality control of 3D printed devices
  • 3D printed models for patient consent in Craniofacial surgery
  • 3D printed models in complex reconstructions

The editorial board invites authors to submit manuscripts with a current interest in basic or clinical contents.

Dr. Gerald T. Grant
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Dentistry Journal is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • additive manufacturing
  • digital design
  • optimization of design for AM
  • validation of 3D printed devices
  • surgical templates
  • accuracy
  • custom patient devices
  • surgical guides
  • dental education

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Published Papers (3 papers)

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Research

11 pages, 24831 KiB  
Article
Accuracy of Mini-Implant Placement Using a Computer-Aided Designed Surgical Guide, with Information of Intraoral Scan and the Use of a Cone-Beam CT
by Georgios Vasoglou, Ioanna Stefanidaki, Konstantinos Apostolopoulos, Evmorfia Fotakidou and Michail Vasoglou
Dent. J. 2022, 10(6), 104; https://doi.org/10.3390/dj10060104 - 8 Jun 2022
Cited by 13 | Viewed by 4061
Abstract
Background: The purpose of the study was to investigate the accuracy of mini-implant placement with the use of a computer designed surgical guide derived by intraoral scanning alongside Cone-Beam Computed Tomography (CBCT) or the use of a 2D radiograph. Methods: Thirty-five mini-implants (Aarhus [...] Read more.
Background: The purpose of the study was to investigate the accuracy of mini-implant placement with the use of a computer designed surgical guide derived by intraoral scanning alongside Cone-Beam Computed Tomography (CBCT) or the use of a 2D radiograph. Methods: Thirty-five mini-implants (Aarhus® System: n = 20, Ø: 1.5 mm and AbsoAnchor®: n = 15, Ø: 1.3–1.4 mm) were placed in the maxilla and mandible of 15 orthodontic patients for anchorage purposes in cases where a CBCT was needed due to impacted teeth or for safety reasons. All were placed with the help of a computer designed surgical guide. One implant became loose and was excluded from the study. For 18 mini-implants (study group), CBCT and intraoral scanning were used for guide design, while for 16 (control group) only intraoral scanning and panoramic imaging information were used. Mini-implant position was recorded by angular and linear measurements on digital models created by combining Digital Imaging and Communications in Medicine (DICOM) and stereolithography (.stl) files. Accuracy in positioning was determined by comparing corresponding measurements for virtual and real positioned mini-implants on digital models before and after operation. The results were statistically analyzed with t-tests and the Mann-Whitney test. Results: No significant statistical differences were found for pre- and post-operational angular measurements in the study group, while significant statistical differences occurred on the same measurements for the control group (coronal angle 13.6° pre-op and 22.7° post-op, p-value = 0.002, axial angle 13.4° pre-op and 15.9° post-op, p-value = 0.034). Linear measurements pre- and post-operational for either group presented no significant statistical differences. Conclusions: A 3D designed and manufactured surgical guide with information concerning CBCT and intraoral scanning ensures accuracy on mini-implant placement while design of the guide without the use of a CBCT is less accurate, especially on inclination of the implant. Full article
(This article belongs to the Special Issue 3D Printing in Dentistry)
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20 pages, 11978 KiB  
Article
Investigation of Patient-Specific Maxillofacial Implant Prototype Development by Metal Fused Filament Fabrication (MF3) of Ti-6Al-4V
by Mohammad Qasim Shaikh, Subrata Deb Nath, Arulselvan Arumugam Akilan, Saleh Khanjar, Vamsi Krishna Balla, Gerald Thomas Grant and Sundar Vedanarayanan Atre
Dent. J. 2021, 9(10), 109; https://doi.org/10.3390/dj9100109 - 23 Sep 2021
Cited by 17 | Viewed by 4072
Abstract
Additive manufacturing (AM) and related digital technologies have enabled several advanced solutions in medicine and dentistry, in particular, the design and fabrication of patient-specific implants. In this study, the feasibility of metal fused filament fabrication (MF3) to manufacture patient-specific maxillofacial implants [...] Read more.
Additive manufacturing (AM) and related digital technologies have enabled several advanced solutions in medicine and dentistry, in particular, the design and fabrication of patient-specific implants. In this study, the feasibility of metal fused filament fabrication (MF3) to manufacture patient-specific maxillofacial implants is investigated. Here, the design and fabrication of a maxillofacial implant prototype in Ti-6Al-4V using MF3 is reported for the first time. The cone-beam computed tomography (CBCT) image data of the patient’s oral anatomy was digitally processed to design a 3D CAD model of the hard tissue and fabricate a physical model by stereolithography (SLA). Using the digital and physical models, bone loss condition was analyzed, and a maxillofacial implant initial design was identified. Three-dimensional (3D) CAD models of the implant prototypes were designed that match the patient’s anatomy and dental implant requirement. In this preliminary stage, the CAD models of the prototypes were designed in a simplified form. MF3 printing of the prototypes was simulated to investigate potential deformation and residual stresses. The patient-specific implant prototypes were fabricated by MF3 printing followed by debinding and sintering using a support structure for the first time. MF3 printed green part dimensions fairly matched with simulation prediction. Sintered parts were characterized for surface integrity after cutting the support structures off. An overall 18 ± 2% shrinkage was observed in the sintered parts relative to the green parts. A relative density of 81 ± 4% indicated 19% total porosity including 11% open interconnected porosity in the sintered parts, which would favor bone healing and high osteointegration in the metallic implants. The surface roughness of Ra: 18 ± 5 µm and a Rockwell hardness of 6.5 ± 0.8 HRC were observed. The outcome of the work can be leveraged to further investigate the potential of MF3 to manufacture patient-specific custom implants out of Ti-6Al-4V. Full article
(This article belongs to the Special Issue 3D Printing in Dentistry)
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7 pages, 1110 KiB  
Article
Accuracy of Guided Surgery and Real-Time Navigation in Temporomandibular Joint Replacement Surgery
by Michael-Tobias Neuhaus, Alexander-Nicolai Zeller, Alexander K. Bartella, Anna K. Sander, Bernd Lethaus and Rüdiger M. Zimmerer
Dent. J. 2021, 9(8), 87; https://doi.org/10.3390/dj9080087 - 2 Aug 2021
Cited by 5 | Viewed by 2806
Abstract
Background: Sophisticated guided surgery has not been implemented into total joint replacement-surgery (TJR) of the temporomandibular joint (TMJ) so far. Design and in-house manufacturing of a new advanced drilling guide with vector and length control for a typical TJR fossa component are described [...] Read more.
Background: Sophisticated guided surgery has not been implemented into total joint replacement-surgery (TJR) of the temporomandibular joint (TMJ) so far. Design and in-house manufacturing of a new advanced drilling guide with vector and length control for a typical TJR fossa component are described in this in vitro study, and its accuracy/utilization was evaluated and compared with those of intraoperative real-time navigation and already available standard drilling guides. Methods: Skull base segmentations of five CT-datasets from different patients were used to design drilling guides with vector and length control according to virtual surgical planning (VSP) for the TJR of the TMJ. Stereolithographic models of the skull bases were printed three times for each case. Three groups were formed to compare our newly designed advanced drilling guide with a standard drilling guide and drill-tracking by real-time navigation. The deviation of screw head position, screw length and vector in the lateral skull base have been evaluated (n = 72). Results: There was no difference in the screw head position between all three groups. The deviation of vector and length was significantly lower with the use of the advanced drilling guide compared with standard guide and navigation. However, no benefit in terms of accuracy on the lateral skull base by the use of real-time navigation could be observed. Conclusion: Since guided surgery is standard in implant dentistry and other CMF reconstructions, this new approach can be introduced into clinical practice soon, in order to increase accuracy and patient safety. Full article
(This article belongs to the Special Issue 3D Printing in Dentistry)
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