Article
Engineering, Biomedical
M. G. E. Oldhoff, M. J. Mirzaali, N. Tumer, J. Zhou, A. A. Zadpoor
Summary: This study reviewed clinical studies on the use of AM patient-specific surgical guides and implants, finding that existing data often lack comprehensive evaluation of clinical outcomes.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Pharmacology & Pharmacy
Juliana dos Santos, Monique Deon, Guilherme Silveira da Silva, Ruy Carlos Ruver Beck
Summary: The study evaluated the effects of different factors on the pharmaceutical properties of 3D-printed forms using a design of experiments approach, finding that the infill percentage and pore former modulate the drug release rate.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Chemistry, Physical
Christine Yazigi, M. Sad Chaar, Reinhard Busch, Matthias Kern
Summary: This study evaluated the accuracy of 3D-printed surgical guides before and after sterilization in a steam sterilizer. Forty guides were printed from five resins, and a control group was used. The fit and vertical discrepancies were measured, and the guides were sterilized and repositioned for further measurements. The accuracy was affected by material and sterilization, but clinically acceptable when an increased load was applied during repositioning.
Review
Biotechnology & Applied Microbiology
Shitou Huang, Hongbo Wei, Dehua Li
Summary: Additive manufacturing technologies are used to create customized objects in complex shapes based on computer-aided design models. In oral implantology, these technologies have been applied to implant surgery, custom titanium meshes, dental implants, and other dental products. Stereolithography, digital light processing, fused deposition modeling, and other techniques are commonly used for different purposes.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Review
Chemistry, Physical
Sudip Saha, Sougata Roy
Summary: This review article aims to summarize the important aspects of metallic dental implants from biomedical, mechanical, and materials science perspectives, including tooth anatomy, wear mechanisms, implant classifications, implant materials, and manufacturing techniques. By combining a wide variety of analyzing approaches from these interdisciplinary fields, deeper insights are delivered to researchers in academia and industry for the development of next-generation dental implants.
Article
Chemistry, Multidisciplinary
Olav U. Bjorken, Benjamin Andresen, Sindre W. Eikevag, Martin Steinert, Christer W. Elverum
Summary: The limitations of DfAM lie in the knowledge of materials and production parameters. By studying the effects of layer temperature, the concept of thermal layer design (TLD) was introduced to increase strength in selected regions. Implementing TLD represents a major advancement in designing high-performance polymer components.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Annika Pliska, Lucia Schiavon, Giulia Brunello, Benedict Wilmes, Beryl Schwarz-Herzke, Dieter Drescher, Kathrin Becker
Summary: This study evaluated and compared the accuracy of two types of mini-implant insertion guides in a human cadaveric model. The results showed significant differences between planned and real positions, indicating the need for further research to improve accuracy in vivo.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Y. Chew, Z. G. Zhu, F. Weng, S. B. Gao, F. L. Ng, B. Y. Lee, G. J. Bi
Summary: In this study, bulk Fe49.5Mn30Co10Cr10C0.5 interstitial multicomponent alloy was fabricated using laser aided additive manufacturing, showing excellent mechanical properties and cellular structures. Tensile tests demonstrated superior strength of the alloy at low temperatures, with almost no twinning observed in fractured samples.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Dentistry, Oral Surgery & Medicine
Camilla Johansson, Jasmin Dibes, Luis Emilio Lopez Rodriguez, Evaggelia Papia
Summary: This study evaluated the accuracy of dental models and surgical guides printed with different digital light processing printers, finding that linear parameters had higher trueness and precision than angle parameters, and that the design of the object affected accuracy.
DENTAL MATERIALS JOURNAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Kai Xiang Kuah, Daniel J. Blackwood, Wee Kit Ong, Mojtaba Salehi, Hang Li Seet, Mui Ling Sharon Nai, Sudesh Wijesinghe
Summary: Binder jet printing is used to produce porous magnesium structures, but the microstructure is detrimental to corrosion performance. Impregnating the pores with hydroxyapatite or polymers greatly improves the corrosion resistance of the binder jet printing samples.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Dentistry, Oral Surgery & Medicine
Belen Moron-Conejo, Jesus Lopez-Vilagran, David Caceres, Santiago Berrendero, Guillermo Pradies
Summary: The objective of this study was to evaluate the accuracy of printed models from different industrial and dental desktop 3D printers. The results showed that the industrial printers had better trueness and precision compared to the dental desktop printers.
CLINICAL ORAL INVESTIGATIONS
(2023)
Review
Dentistry, Oral Surgery & Medicine
Adria Jorba-Garcia, Albert Gonzalez-Barnadas, Octavi Camps-Font, Rui Figueiredo, Eduard Valmaseda-Castellon
Summary: The study assessed the accuracy of dynamic computer-aided implant surgery systems in placing dental implants, finding that these systems are more accurate than static computer-aided implant surgery systems and freehand implant placement.
CLINICAL ORAL INVESTIGATIONS
(2021)
Review
Engineering, Manufacturing
Jose Luis Perez-Castillo, Enrique Cuan-Urquizo, Armando Roman-Flores, Oscar Olvera-Silva, Victor Romero-Munoz, Alfonso Gomez-Espinosa, Rafiq Ahmad
Summary: This paper provides an overview of the state-of-the-art in curved layered fused filament fabrication (CLFFF), covering topics such as upgrading FFF machines, slicing algorithms, and mechanical property characterization. Additionally, potential future research directions and the application of CLFFF in lattice metamaterial fabrication are discussed, along with concluding remarks and recommendations for the use of CLFFF.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Medicinal
Joana Macedo, Nuno F. da Costa, Valerie Vanhoorne, Chris Vervaet, Joao F. Pinto
Summary: The study evaluated the multiple printing method for tablet manufacturing using FDM technology and analyzed various performance indicators. The results showed that multiple printing resulted in more stable tablet quality and significantly reduced manufacturing time compared to individual printing.
JOURNAL OF PHARMACEUTICAL SCIENCES
(2022)
Article
Engineering, Manufacturing
Fen Chen, Ya-Ru Wu, Jia-Min Wu, Hao Zhu, Shuang Chen, Shuai-Bin Hua, Zi-Xuan He, Chang-Yu Liu, Jun Xiao, Yu-Sheng Shi
Summary: This study prepared ZrO2-Al2O3 bioceramics using SL technology, showing excellent mechanical properties and biocompatibility suitable for all-ceramic restorations, with great application prospects in dental field.
ADDITIVE MANUFACTURING
(2021)
Article
Dentistry, Oral Surgery & Medicine
Philipp Rehm, Hermann Derks, Wilfried Lesaar, Benedikt Christopher Spies, Florian Beuer, Mats Wernfried Heinrich Boese
Summary: The study evaluated the long-term survival and success rates of partial-coverage crowns manufactured from high noble metal alloys, which showed excellent outcomes after an average observation period of 18.8 years. Patients aged between 37 and 51 years had significantly higher success rates with high noble metal alloy partial-coverage crowns.
CLINICAL ORAL INVESTIGATIONS
(2022)
Article
Dentistry, Oral Surgery & Medicine
Manrique Fonseca, Mireia Haro Adanez, Stefano Pieralli, Miha Brezavscek, Burak Yilmaz, Wael Att
Summary: This study compared the clinical outcomes of short implants and regular-length implants in patients with fixed restorations after 2 years. The results showed that both types of implants had a 100% success and survival rate. There was no statistically significant difference in peri-implant marginal bone level between the two types, but short implants showed higher clinical attachment level and probing depth values.
JOURNAL OF ORAL IMPLANTOLOGY
(2022)
Article
Chemistry, Physical
Sebastian Berthold Maximilian Patzelt, Marei Kruegel, Christian Wesemann, Stefano Pieralli, Julian Nold, Benedikt Christopher Spies, Kirstin Vach, Ralf-Joachim Kohal
Summary: The study compared conventional to digital workflows in occlusal splint production and found that the digital workflow was more time efficient and led to better fit than the conventional workflow.
Article
Multidisciplinary Sciences
Felix Burkhardt, Benedikt C. Spies, Christian Wesemann, Carl G. Schirmeister, Erik H. Licht, Florian Beuer, Thorsten Steinberg, Stefano Pieralli
Summary: Extrusion-based printing enables simplified and economic manufacturing of surgical guides for oral implant placement. The cytotoxicity of two materials, biocopolyester (BE) and polypropylene (PP), intended for printing surgical guides, was evaluated. The results show that all evaluated materials are biocompatible for short-term application, but long-term contact with ME may induce inflammatory and apoptotic responses.
SCIENTIFIC REPORTS
(2022)
Article
Medicine, General & Internal
Leonard Simon Brandenburg, Stefan Schlager, Lara Sophie Harzig, David Steybe, Rene Marcel Rothweiler, Felix Burkhardt, Benedikt Christopher Spies, Joachim Georgii, Marc Christian Metzger
Summary: Adequate soft-tissue dimensions are crucial for the success of dental implants. This study uses statistical shape models to calculate the mucogingival borderline and accurately reconstructs it using intra-oral scanner data and principal component analysis.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Dentistry, Oral Surgery & Medicine
Ralf-Joachim Kohal, Christopher von Schierholz, Julian Nold, Benedikt C. C. Spies, Erik Adolfsson, Kirstin Vach, Felix Burkhardt
Summary: The objective of this study was to investigate the fracture strength and potential phase transformation of an injection-molded two-piece zirconia implant restored with a zirconia abutment after loading and/or aging. The results showed that dynamic loading and the combination of loading and aging reduced the fracture strength of the implant abutment combination. Hydrothermal treatment caused a shallow transformation zone which had no influence on the fracture strength.
CLINICAL ORAL IMPLANTS RESEARCH
(2023)
Article
Engineering, Biomedical
Ralf-Joachim Kohal, Kirstin Vach, Frank Butz, Benedikt Christopher Spies, Sebastian Berthold Maximilian Patzelt, Felix Burkhardt
Summary: The study investigated the clinical and radiological outcome of one-piece zirconia oral implants supporting three-unit fixed dental prostheses after three years. 54 implants were placed in 27 patients through a one-stage surgery and immediate provisionalization. Standardized radiographs were taken at different time points to evaluate bone loss and soft-tissue parameters. The zirconia implants exhibited a cumulative survival rate of 98.1% after three years, with a mean marginal bone loss of 2.16 mm. However, high peri-implantitis incidence and low implant success rate were observed, indicating a possible concern for long-term stability.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Severin Rothlauf, Stefano Pieralli, Christian Wesemann, Felix Burkhardt, Kirstin Vach, Florian Kernen, Benedikt Christopher Spies
Summary: This study evaluated the influence of planning software and design of surgical templates on the accuracy and precision of static computer assisted implant surgery. Virtual positioning of two adjacent oral implants using two planning software was performed and surgical guides were fabricated using material extrusion. The installation of implants using these guides showed clinically acceptable deviations.
JOURNAL OF DENTISTRY
(2023)
Article
Multidisciplinary Sciences
F. Burkhardt, S. Pieralli, T. Bergfeldt, G. Wemken, C. Wesemann, D. Stolz, B. C. Spies
Summary: This study examined the elemental composition of a wide range of commercially available dental materials, with a focus on beryllium content, and found that beryllium content in all samples was below the limit of quantification, indicating that possible traces of beryllium in dental materials were clinically irrelevant.
SCIENTIFIC REPORTS
(2022)
Article
Dentistry, Oral Surgery & Medicine
Claudio Schmid, Martin Lotz, Stefano Pieralli, Silvio Valdec
Summary: This case report presents a novel minimally invasive fully guided apicoectomy technique for the treatment of a maxillary first molar using a custom-made 3D-printed template. The combination of high-resolution CBCT devices, CAD planning software, and CAM technologies has allowed for improved diagnostic and treatment planning in endodontics. The presented technique demonstrates successful outcomes and has the potential for future applications in preserving infected maxillary molars.
QUINTESSENCE INTERNATIONAL
(2022)
Article
Engineering, Biomedical
Leonard Simon Brandenburg, Lukas Berger, Steffen Jochen Schwarz, Hans Meine, Julia Vera Weingart, David Steybe, Benedikt Christopher Spies, Felix Burkhardt, Stefan Schlager, Marc Christian Metzger
Summary: This study examines the use of a statistical shape model (SSM) to compute the course of dental roots based on a surface scan. The SSM is generated using open-source software and allows for the estimation of tooth axes. The results show that the SSM can accurately predict the approximate course of dental roots and can be used as a reference for implant positioning.
INTERNATIONAL JOURNAL OF COMPUTER ASSISTED RADIOLOGY AND SURGERY
(2022)
Correction
Dentistry, Oral Surgery & Medicine
Irena Sailer, Sven Muhlemann, Ralf J. Kohal, Benedikt C. Spies, Bjarni E. Pjetursson, Niklaus P. Lang, Klaus L. Gotfredsen, Jan E. Ellingsen, Helena Francisco, Mutlu Ozcan, Bassam Hassan, Guillem Esteve-Pardo, Javier A. Bardaji, Riccardo D. Kraus, Ann Wennerberg
CLINICAL ORAL IMPLANTS RESEARCH
(2022)