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Applied Sciences
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Digital Dentistry and New Era of Prosthodontics
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Digital Dentistry and New Era of Prosthodontics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Dentistry and Oral Sciences".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 8420

Special Issue Editor

Dr. Keunbada Son

E-Mail Website
Guest Editor
Advanced Dental Device Development Institute, School of Dentistry, Kyungpook National University, Daegu 37224, Republic of Korea
Interests: dental science; prosthodontics; digital dentistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the introduction of the dental computer-aided design and computer-aided manufacturing (CAD-CAM) system, dental prostheses can be fabricated using a digital workflow through three-dimensional (3D) data acquisition, CAD, and CAM processing as opposed to the conventional workflow involving a manual process using the lost wax technique. Prior to the introduction of intraoral scanners, the digital workflow was used to fabricate a gypsum cast through impression taking in the patient's mouth and to obtain a virtual model using a desktop 3D scanner. The intraoral scanner, on the other hand, can acquire a virtual model through direct optical scanning of the patient's mouth. The introduction and development of intraoral scanners have led to a significant increase in the demand for digital workflows.

This Special Issue aims to cover recent advances in the development and application of these technologies in digital dentistry, dental CAD/CAM, 3D scanner, and prosthodontics. Topics of interest include, but are not limited to: digital dentistry; dental CAD/CAM; 3D scanner; CAD software; 3D analysis for accuracy; and prosthodontics.

Prof. Dr. Keunbada Son
Guest Editors

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Keywords

  • digital dentistry
  • dental CAD/CAM
  • 3D scanner
  • CAD software
  • 3D analysis for accuracy
  • prosthodontics

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Published Papers (3 papers)

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Research

13 pages, 3478 KiB  
Article
The Effect of Different Ferrule Configurations and Preparation Designs on the Fatigue Performance of Endodontically Treated Maxillary Central Incisors: A 3D Finite Element Analysis
by Mehmet Gökberkkaan Demirel and Reza Mohammadi
Appl. Sci. 2024, 14(4), 1355; https://doi.org/10.3390/app14041355 - 7 Feb 2024
Cited by 1 | Viewed by 2181
Abstract
The presence of an adequate circumferential ferrule is of great importance for the prosthetic rehabilitation of endodontically treated teeth. However, there may not be an adequate circumferential ferrule effect. This study aimed to evaluate the fatigue performance of endocrown and post–core restorations applied [...] Read more.
The presence of an adequate circumferential ferrule is of great importance for the prosthetic rehabilitation of endodontically treated teeth. However, there may not be an adequate circumferential ferrule effect. This study aimed to evaluate the fatigue performance of endocrown and post–core restorations applied to different configurations without an adequate ferrule effect using the finite element method and endeavors to offer a comprehensive perspective on the challenging rehabilitation of maxillary incisors with excessive coronal substance loss, addressing a notable gap in research and providing valuable insights for clinicians. The goal is to address this gap in research and contribute valuable insights that could be beneficial for practitioners. The maxillary central incisor was selected, and lithium disilicate (LS) and a polymer-infiltrated ceramic network (PICN) were used in post–core groups with no ferrule effect (PC0); a 2 mm ferrule effect on the buccal wall (PC1); a 2 mm ferrule effect on the buccal-mesial wall (PC2); a 2 mm ferrule effect on the buccal–mesial–palatal wall (PC3); and a 2 mm circumferential ferrule effect (PC4) In the endocrown groups, an external retention group with a circumferential ferrule (ECER) and an inner retention form group (ECIR) were prepared. Fatigue performance was examined by applying a 150 N oblique load. The evaluation of the fatigue performance of the restorative materials shows that LS always had more successful fatigue performance results, while the post–core groups were generally more successful in terms of dentin survival. In situations where there is insufficient circumferential ferrule, the application of endocrowns is likely to result in a less successful prognosis for survival. Full article
(This article belongs to the Special Issue Digital Dentistry and New Era of Prosthodontics)
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9 pages, 1959 KiB  
Communication
Accuracy of Extraoral Digital Impressions with Multi-Unit Implants
by Manuel António Sampaio-Fernandes, Ricardo Pinto, Paulo Rocha Almeida, Maria Margarida Sampaio-Fernandes, Duarte Marques and Maria Helena Figueiral
Appl. Sci. 2023, 13(15), 8769; https://doi.org/10.3390/app13158769 - 29 Jul 2023
Cited by 3 | Viewed by 2069
Abstract
The aim of this in vitro study was to evaluate the accuracy of impressions made using two different silicones and corresponding stone casts in full-arch implant rehabilitation, using two laboratory scanners. A master model with six dental implants was created, scanned with a [...] Read more.
The aim of this in vitro study was to evaluate the accuracy of impressions made using two different silicones and corresponding stone casts in full-arch implant rehabilitation, using two laboratory scanners. A master model with six dental implants was created, scanned with a 12-megapixel scanner and used as digital master model. Ten implant impressions were obtained via two silicone impressions systems—Coltene® and Zhermack®—using the open-tray technique and poured gypsum. Two extraoral scanning systems (S600 ARTI Zirkonzhan® and Identica T500 Medit®) were used to scan the impressions and stone casts. Best-fit superimpositions were conducted between the master model and the virtual models obtained. A significance level of p < 0.05 was considered. The accuracy of the Medit® scanner was 82.26 [53.18; 111.34] µm for Coltene® silicone and 87.43 [72.00; 102.86] µm for Zhermack® silicone, and the accuracy of the Zirkonzhan® scanner was 69.90 [62.37; 77.43] µm for Coltene® silicone and 80.67 [65.77; 95.57] µm for Zhermack® silicone, without significant differences between scanners. When comparing the two silicones, no significant differences were found for the Medit® (p = 0.112) or Zirkonzhan® scanners (p = 0.162). The Zhermack® scanner showed better accuracy than the corresponding stone casts in the two scanners, Medit® (p = 0.019) and Zirkonzahn® (p = 0.002). The extraoral digitalization of impressions in edentulous dental arches with six implants proves to be a valid technique. Full article
(This article belongs to the Special Issue Digital Dentistry and New Era of Prosthodontics)
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12 pages, 845 KiB  
Article
Requirements for Dental CAD Software: A Survey of Korean Dental Personnel
by KeunBaDa Son, Gyu Ri Kim, Won-Gi Kim, Wol Kang, Du-Hyeong Lee, So-Yeun Kim, Jae-Mok Lee, Yong-Gun Kim, Jin-Wook Kim, Sung-Tak Lee, Myoung-Uk Jin, Ho-Jin Kim, Jaesik Lee, Ji-Rak Kim and Kyu-Bok Lee
Appl. Sci. 2023, 13(5), 2803; https://doi.org/10.3390/app13052803 - 22 Feb 2023
Cited by 5 | Viewed by 2747
Abstract
This study aimed to evaluate the needs of dentists, dental technicians, dental hygienists, and dental-related workers in terms of dental computer-aided design (CAD) software and artificial intelligence (AI). Based on a factor analysis, 57 survey items were assigned to six categories: (a) considerations [...] Read more.
This study aimed to evaluate the needs of dentists, dental technicians, dental hygienists, and dental-related workers in terms of dental computer-aided design (CAD) software and artificial intelligence (AI). Based on a factor analysis, 57 survey items were assigned to six categories: (a) considerations when purchasing dental CAD software; (b) prosthesis design process; (c) dental CAD function; (d) use of AI dental CAD crown and denture design; (e) impact of AI; and (f) improvements in AI features. Overall, 93 participants were included in the study, and the reliability of the resultant survey data was estimated using Cronbach’s alpha coefficient. Statistically significant factors in each category were identified using one-way analysis of variance and Tukey’s honestly significant difference test (α = 0.05). The results revealed that design quality, design convenience and reproducibility, margin line setting, and automatic margin setting were considered most important in their respective categories (p < 0.05). There were also significant differences in the importance of certain items, such as branding importance and functional diversity, among different dental personnel groups (p < 0.05). Design speed and convenience were also found to be more important to dentists and dental hygienists compared to other dental personnel (p < 0.05). The importance of specific survey items varied significantly based on age, dental personnel, and work experience groups. Dental personnel, such as dentists and dental technicians, assigned greater importance to certain factors, such as branding, functional diversity, design speed, and compatibility with CAM equipment, compared to other occupational groups. Full article
(This article belongs to the Special Issue Digital Dentistry and New Era of Prosthodontics)
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