Accuracy of CAD-CAM systems for removable partial denture framework fabrication: A systematic review

Pereira, Ana Larisse Carneiro; Medeiros, Annie Karoline Bezerra de; Santos, Kaiza de Sousa; Almeida, Érika Oliveira de; Barbosa, Gustavo Augusto Seabra; Carreiro, Adriana da Fonte Porto

doi:10.1016/j.prosdent.2020.01.003

Cited by 74 publications

(54 citation statements)

References 27 publications

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“…In other studies, the analyzed frameworks had clinically acceptable discrepancies (<311 µm) and the material influenced the fitting accuracy [16]. Several authors reported that the crown marginal gap should not exceed 120 µm for clinical acceptance [17][18][19]. Comparative studies showed different results for the same material used for the manufacturing of different frameworks in terms of design, shapes, and size [20,21].…”

Section: Discussionmentioning

confidence: 95%

“…Regarding the removable partial denture framework, numerous studies analyzed the precision between the metallic framework and mucosal ridge or natural tooth [10][11][12][14][15][16][17]21].…”

Section: Discussionmentioning

confidence: 99%

“…According to [16], clinically acceptable discrepancies are of less than 311 µm, the material influencing also upon this. Several authors reported that the crown margin gap should be smaller than 120 µm for clinical acceptance [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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Casting over Metal Method Used in Manufacturing Hybrid Cobalt-Chromium Dental Prosthetic Frameworks Assembles

et al. 2021

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Cobalt–chromium (Co–Cr) alloys are the most widely used materials for removable and fixed dental prosthetic frameworks. The fitting accuracy between these components in dental prosthetic frameworks assembles (DPFAs) is largely influenced by the manufacturing method. This study presents a novel manufacturing method that combined two common techniques for obtaining one single framework: casting of Co–Cr inserts on top of parts previously manufactured by selective laser melting (SLM) of Co–Cr powder (CoM). Horizontal (n = 4) and vertical (n = 3) surfaces were microscopically analyzed (n = 770 count sum). The results revealed a high precision of the process and high fitting accuracy between the hybrid frameworks. The average distance measured between the frameworks in joined position was 41.08 ± 7.56 µm. In conclusion, the manufacturing of Co–Cr alloys DPFA using the CoM method reduced the deformation of hybrid frameworks and improved the joining accuracy between them.

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

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Casting over Metal Method Used in Manufacturing Hybrid Cobalt-Chromium Dental Prosthetic Frameworks Assembles

et al. 2021

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“…Computer-aided production is the application of software to control machine tools in the production of various 3D items. The most commonly used devices in dentistry are those for milling, sintering, rapid prototyping and 3D printing different dental restorations [34].…”

Section: Medical Imaging Is the Visualization Of Anatomical Structures By Computerized Imagingmentioning

confidence: 99%

Interdisciplinary crossover for rapid advancements - collaboration between medical and engineering scientists with the focus on Serbia

et al. 2021

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Over the past decades, development of engineering sciences has incredibly contributed to advancements in medicine by production of numerous devices for diagnostics and treatment. In the middle of the twentieth century, a new scientific field, biomedical engineering (BE), was established, which has developed into an extremely complex scientific discipline requiring a distinctive educational profile. Various study programs in BE have been established at universities around the world but also at several universities in Serbia. Also, intensive research in this field is performed at several scientific institutions in Serbia. In the present paper short summaries of the research results of several groups of engineers and medical doctors are presented as an illustration of the wide field of BE research and possibilities of its application in diagnosis and therapy of various diseases.

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“…So, accurate custom planning and fabrication of the RPD for each patient is a critical component of success. Previous studies showed promising results for the fit of RPDs fabricated by CAD-CAM systems, especially for Kennedy class III and IV defects (Arnold, et al, 2018;Chen, et al, 2019;Lang & Tulunoglu, 2014;Arafa, 2018;Carneiro Pereira, et al, 2020). Digital flow has become a reality for making RPD structures, from the use of scanning, planning and manufacturing, either by subtractive or additive method (Arnold, et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The computer-aided design and rapid prototyping fabrication of removable partial denture framework for occlusal rehabilitation: clinical report

Carreiro

Pereira

Paz

et al. 2020

RSD

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The objective of this case report was to describe the clinical sequence for occlusal vertical dimension (OVD) recovering with the manufacture of removable partial dentures (RPD) produced by computer-aided design and rapid prototyping. The patient presented to the Dentistry Department of the Federal University of Rio Grande do Norte reporting dissatisfaction with the superior RPD. At clinical investigation, a fracture in the minor connector and support at the region of tooth 15 was observed, in addition to severe OVD loss. In this case, after obtaining correct OVD, four more sessions were necessary for RPD fabrication. In the first appointment, intraoral scanning was performed to generate STL files used for path of insertion determination in the CAD software. The need for a guide plane on tooth 15 was observed, thus a preparation guide was designed and 3Dprinted to aid axial tooth reduction. At the second visit, after mouth preparation, another intraoral scanning was performed to acquire virtual working models. The RPD framework was designed and 3D printed in a castable resin pattern and invested for cobalt-chromium alloy melting. In the third visit, clinical evaluation of the framework and teeth and artificial gingiva colors selection were performed. The articulated models were then 3D printed, enabling pre-fabricated teeth to be assembled and acrylized. On the fourth appointment, RPD was installed and the patient received routine instructions. In this sense, the use of CAD/CAM technologies presented as a valuable tool to enhance restoration of OVD by the manufacturing of RPD.

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Accuracy of CAD-CAM systems for removable partial denture framework fabrication: A systematic review

Cited by 74 publications

References 27 publications

Casting over Metal Method Used in Manufacturing Hybrid Cobalt-Chromium Dental Prosthetic Frameworks Assembles

Casting over Metal Method Used in Manufacturing Hybrid Cobalt-Chromium Dental Prosthetic Frameworks Assembles

Interdisciplinary crossover for rapid advancements - collaboration between medical and engineering scientists with the focus on Serbia

The computer-aided design and rapid prototyping fabrication of removable partial denture framework for occlusal rehabilitation: clinical report

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