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      Evaluation of the accuracy of dental casts manufactured with 3D printing technique in the All-on-4 treatment concept

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          Abstract

          PURPOSE

          The aim of this study is to compare the casts obtained by using conventional techniques and liquid crystal display (LCD) three-dimensional (3D) print techniques in the All-on-4 treatment concept of the edentulous mandibular jaw.

          MATERIALS AND METHODS

          In this study, a completely edentulous mandibular acrylic cast (typodont) with bone-level implants placed with the All-on-4 technique served as a reference cast. In this typodont, impressions were taken with the conventional technique and dental stone casts were obtained. In addition, after scanning the acrylic cast in a dental laboratory scanner and obtaining the Standard Tessellation Language (STL) data, 3D printed casts were manufactured with a 3D printing device based on the design. The stone and 3D printed casts were scanned in the laboratory scanner and STL data were obtained, and then the interimplant distances were measured using Geomagic Control X v2020 (3D Systems, Rock Hill, SC, USA) analysis software (n = 60). The obtained data were statistically evaluated with one-way analysis of variance (ANOVA) and Tukey’s pairwise comparison tests.

          RESULTS

          As a result of the one-way ANOVA test, it was determined that the stone casts, 3D printed casts, and reference cast values in all distance intervals conformed to the normal distribution and these values had a significant difference among them in all distance intervals. In Tukey pairwise comparison test, significant differences were found between casts at all distance intervals. In all analyses, the level of significance was determined as .05.

          CONCLUSION

          3D printed casts obtained with a 3D LCD printing device can be an alternative to stone casts when implants are placed in edentulous jaws.

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          Most cited references44

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          3D printing in dentistry.

          3D printing has been hailed as a disruptive technology which will change manufacturing. Used in aerospace, defence, art and design, 3D printing is becoming a subject of great interest in surgery. The technology has a particular resonance with dentistry, and with advances in 3D imaging and modelling technologies such as cone beam computed tomography and intraoral scanning, and with the relatively long history of the use of CAD CAM technologies in dentistry, it will become of increasing importance. Uses of 3D printing include the production of drill guides for dental implants, the production of physical models for prosthodontics, orthodontics and surgery, the manufacture of dental, craniomaxillofacial and orthopaedic implants, and the fabrication of copings and frameworks for implant and dental restorations. This paper reviews the types of 3D printing technologies available and their various applications in dentistry and in maxillofacial surgery.
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            Digital dentistry: an overview of recent developments for CAD/CAM generated restorations.

            As in many other industries, production stages are increasingly becoming automated in dental technology. As the price of dental laboratory work has become a major factor in treatment planning and therapy, automation could enable more competitive production in high-wage areas like Western Europe and the USA. Advances in computer technology now enable cost-effective production of individual pieces. Dental restorations produced with computer assistance have become more common in recent years. Most dental companies have access to CAD/CAM procedures, either in the dental practice, the dental laboratory or in the form of production centres. The many benefits associated with CAD/CAM generated dental restorations include: the access to new, almost defect-free, industrially prefabricated and controlled materials; an increase in quality and reproducibility and also data storage commensurate with a standardised chain of production; an improvement in precision and planning, as well as an increase in efficiency. As a result of continual developments in computer hardware and software, new methods of production and new treatment concepts are to be expected, which will enable an additional reduction in costs. Dentists, who will be confronted with these techniques in the future, require certain basic knowledge if they are to benefit from these new procedures. This article gives an overview of CAD/CAM-technologies and systems available for dentistry today.
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              Precision and trueness of dental models manufactured with different 3-dimensional printing techniques

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                Author and article information

                Journal
                J Adv Prosthodont
                J Adv Prosthodont
                JAP
                The Journal of Advanced Prosthodontics
                The Korean Academy of Prosthodontics
                2005-7806
                2005-7814
                December 2022
                22 December 2022
                : 14
                : 6
                : 379-387
                Affiliations
                [1 ]Department of Prosthodontics, Faculty of Dentistry, Inonu University, Malatya, Turkey.
                [2 ]Department of Mechanical Engineering, Faculty of Engineering, Inonu University, Malatya, Turkey.
                [3 ]Department of Prosthodontics, Faculty of Dentistry, Okan University, Istanbul, Turkey.
                Author notes
                Corresponding author: Hilin Tas. Department of Prosthodontics, Faculty of Dentistry, Inonu University, Malatya, Turkey, 44280, Turkey. Tel +905362733226, hilintas@ 123456outlook.com
                Author information
                https://orcid.org/0000-0002-4972-2907
                https://orcid.org/0000-0002-8744-5592
                https://orcid.org/0000-0002-7602-8101
                https://orcid.org/0000-0001-5389-5571
                https://orcid.org/0000-0002-8461-7774
                Article
                10.4047/jap.2022.14.6.379
                9832145
                36685787
                3ec2c7db-e349-4d90-b710-82f49a501a72
                © 2022 The Korean Academy of Prosthodontics

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 05 August 2022
                : 12 November 2022
                : 15 December 2022
                Funding
                Funded by: Inonu University Scientific Research;
                Award ID: TDH-2021-2668
                Categories
                Original Article

                Dentistry
                accuracy,all-on-4,dental implant,digital dentistry,three-dimensional printing
                Dentistry
                accuracy, all-on-4, dental implant, digital dentistry, three-dimensional printing

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