Quantitative evaluation of edentulous maxillomandibular relationship record using diagnostic complete dentures fabricated by CAD and 3D printing

A 3D cell printing-fabricated HepG2 liver spheroid model for high-content in situ quantification of drug-induced liver toxicity

Biomaterials Science ◽

10.1039/d1bm00749a ◽

2021 ◽

Author(s):

Sera Hong ◽

Joon Myong Song

Keyword(s):

3D Printing ◽

Quantitative Evaluation ◽

Liver Toxicity ◽

Drug Induced ◽

Spheroid Culture ◽

Cell Printing ◽

Culture Model

A 3D printing-based HepG2 liver spheroid culture model was developed for in situ quantitative evaluation and high-content monitoring of drug-induced hepatotoxicity.

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A probabilistic-based extendable quantitative evaluation method for 3D printing service in cloud manufacturing

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/09544054211015974 ◽

2021 ◽

pp. 095440542110159

Author(s):

Jin Cui ◽

Lin Zhang

Keyword(s):

3D Printing ◽

Quantitative Evaluation ◽

Probabilistic Models ◽

Evaluation Method ◽

Evaluation Model ◽

Multinomial Distribution ◽

Cloud Manufacturing ◽

Consumer Products ◽

Cloud Services ◽

Weighting Method

By enabling consumer products to be produced on demand and eliminating waste caused by excessive production and transportation, 3D Printing Cloud Services (3DPCSs) are increasingly welcomed by non-professional customers. With more and more 3D printers becoming available on various 3DPCS platforms, the evaluation and selection problem of 3DPCS has attracted much attention for both novices and experienced users. In this paper, we propose a probabilistic-based extendable quantitative evaluation method for 3DPCS evaluation. This method combines the advantages of the information transformation technique, the multinomial distribution probabilistic model, and the uncertainty based weighting method. Evaluation factors, the major attributes that significantly affect the performance of a 3DPCS, are modeled using probabilistic models. At the same time, historical service data is introduced to dynamically identify and update the evaluation factors. Based on these parameters, the proposed quantitative evaluation method can support the evaluation and comparison of 3DPCSs. Numerical simulation experiments are designed and implemented. The corresponding results verify the effectiveness of the proposed evaluation model. The presented evaluation method can serve as the basis of service evaluation and selection on a 3DPCS platform. Although the focus of this work is on 3DPCS, the idea can apply to other types of cloud manufacturing services.

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3D printed complete removable dental prostheses: a narrative review

BMC Oral Health ◽

10.1186/s12903-020-01328-8 ◽

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.

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On Physical and Chemical Characteristics of Poly(methylmethacrylate) Nanocomposites for Dental Applications. I.

Materiale Plastice ◽

10.37358/mp.17.4.4922 ◽

2017 ◽

Vol 54 (4) ◽

pp. 666-672 ◽

Cited By ~ 4

Author(s):

Eugenia Eftimie Totu ◽

Corina Marilena Cristache ◽

Elena Voicila ◽

Ovidiu Oprea ◽

Ismail Agir ◽

...

Keyword(s):

3D Printing ◽

Small Difference ◽

Chemical Characteristics ◽

Polymer Complex ◽

Complete Dentures ◽

Complex Matrix ◽

Dental Applications ◽

Physical And Chemical ◽

Nanofiller Content ◽

Pmma Polymer

The objective of this paper is to present the thermal behavior of various PMMA/TiO2 nanocomposite for complete dentures fabrication with 3D printing technology. There have been prepared and thermally characterized polymeric composites with varied nanofiller content ranging between 0.2% and 2.5% (w/w%). The nanocomposites proved a better thermal performance than that of pure copolymer PMMA-MMA or 3D printing PMMA polymer complex matrix. A small difference in glass transition (Tg) temperature for all compounds studied was recorded.

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Bioinspired design of flexible armor based on chiton scales

Nature Communications ◽

10.1038/s41467-019-13215-0 ◽

2019 ◽

Vol 10 (1) ◽

Cited By ~ 5

Author(s):

Matthew Connors ◽

Ting Yang ◽

Ahmed Hosny ◽

Zhifei Deng ◽

Fatemeh Yazdandoost ◽

...

Keyword(s):

3D Printing ◽

Computational Modeling ◽

Quantitative Evaluation ◽

Systematic Study ◽

Three Dimensional ◽

Structural Diversity ◽

Soft Body ◽

Trade Off ◽

Nanomechanical Properties ◽

Flexible Armor

AbstractMan-made armors often rely on rigid structures for mechanical protection, which typically results in a trade-off with flexibility and maneuverability. Chitons, a group of marine mollusks, evolved scaled armors that address similar challenges. Many chiton species possess hundreds of small, mineralized scales arrayed on the soft girdle that surrounds their overlapping shell plates. Ensuring both flexibility for locomotion and protection of the underlying soft body, the scaled girdle is an excellent model for multifunctional armor design. Here we conduct a systematic study of the material composition, nanomechanical properties, three-dimensional geometry, and interspecific structural diversity of chiton girdle scales. Moreover, inspired by the tessellated organization of chiton scales, we fabricate a synthetic flexible scaled armor analogue using parametric computational modeling and multi-material 3D printing. This approach allows us to conduct a quantitative evaluation of our chiton-inspired armor to assess its orientation-dependent flexibility and protection capabilities.

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Color Changes and Stainability of Complete Dentures Manufactured Using PMMA-TiO2 Nanocomposite and 3D Printing Technology-one year evaluation

Revista de Chimie ◽

10.37358/rc.18.2.6128 ◽

2018 ◽

Vol 69 (2) ◽

pp. 463-468 ◽

Cited By ~ 2

Author(s):

Corina Marilena Cristache ◽

Luminita Oancea ◽

Andreea Cristiana Didilescu ◽

Mihai Burlibasa ◽

Eugenia Eftimie Totu

Keyword(s):

3D Printing ◽

Color Change ◽

Subjective Evaluation ◽

Color Stability ◽

Titania Nanoparticles ◽

Complete Dentures ◽

Printing Technology ◽

3D Printing Technology ◽

Color Changes ◽

One Year

Color stability through wear and time, one of the most important esthetic factor, influencing patient�s acceptance of an acrylic removable prosthesis, was investigated in vivo in a limited number of studies and solely on prefabricated denture teeth.The aims of the present paper were to assess the color changes occurred with the commercially available PMMA for 3D printing technique, improved by doping with titania nanoparticles, and to evaluate the color stability and stainability of the PMMA with 0.4%TiO2 denture teeth, on denture wearers, over a period of one year. Ten patients rehabilitated with removable complete dentures or implant retained overdentures manufactured using a new nanopolymer, PMMA doped with 0.4% by weight of TiO2 as denture base and artificial teeth material and Digital Light Projection (3D printing) technology, were evaluated in the present study. The color of each denture was assessed with a spectrophotometer, before and after use, in CIE L*a*b* system. The before measurement was made on the positive control - PMMA with nanoTiO2 (PC), while the after was measured the color of the tooth after one year complete denture use. Negative control - PMMA without nanoTiO2 (NC) was also compared to PC and the following parameters were registered: Value (L), Chroma (C), Hue (H), redness/greenness (a) and yellowness/blueness (b). A color difference (DE) between 1.63 and 5.24 was measured for all patients, while for the NC DE was triple (17.65). The highest DE value for all denture wearers with TiO2 nanofiler inclusions was below the maximum acceptability threshold, in accordance to the patient�s subjective evaluation, who were unable to identify the color change.

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Preliminary Studies on Citotoxicity and Genotoxicity Assessment of the PMMA-TiO2 Nanocompozites for Stereolithographic Complete Dentures Manufacturing

Revista de Chimie ◽

10.37358/rc.18.5.6281 ◽

2018 ◽

Vol 69 (5) ◽

pp. 1160-1165 ◽

Cited By ~ 3

Author(s):

Eugenia Eftimie Totu ◽

Corina Marilena Cristache ◽

Ibrahim Isildak ◽

Ridvan Yildirim ◽

Mihai Burlibasa ◽

...

Keyword(s):

Staphylococcus Aureus ◽

Antibacterial Activity ◽

Additive Manufacturing ◽

3D Printing ◽

Methyl Methacrylate ◽

Inhibitory Action ◽

Bacterial Species ◽

Complete Dentures ◽

Cad Cam ◽

Good Biocompatibility

The aim of the present study was to characterize and preliminary assess the cytotoxicity and genotoxicity of different PMMA-TiO2 nanocomposites suitable to be used for two-parts stereolithographic complete denture manufacturing. In order to improve mechanical and antibacterial characteristics of the materials for 3D printing dentures, two matrix materials consisting in commercially available solutions of poly(methyl methacrylate) (PMMA), referred as dent-PMMA respectively base-PMMA, have been doped with different amount of TiO2 nanoparticles: 0.4, 0.6, 1.0, and 4.0% by weight. The obtained nanocomposites were structural characterized and assessed for antibacterial activity, cytotoxicity and genotoxicity. The newly obtained nanocomposites presented a good inhibitory action against the considered bacterial species-Staphylococcus aureus, good biocompatibility under 4.0% by weight. The results of the preliminary studies on cytotoxicity and genotoxicity assessment recommends the use of 0.4% TiO2 dent-PMMA and base-PMMA for CAD/CAM additive manufacturing of two-parts complete dentures/overdentures.

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