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Advances in Metal-Based and Ceramic-Based Dental Materials
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Advances in Metal-Based and Ceramic-Based Dental Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (20 May 2023) | Viewed by 4490

Special Issue Editor

Dr. Tomofumi Sawada

E-Mail Website
Guest Editor
Department of Biomedical Engineering, Iwate Medical University, Yahaba-cho, Iwate 028-3694, Japan
Interests: dental materials; ceramic; zirconia; all-ceramic; 3Y-TZP

Special Issue Information

Dear Colleagues,

Recently, the development and progressive of dental CAD/CAM technology and adhesive technology has enabled widespread use of novel dental materials. Subtractive manufacturing and additive manufacturing are the main categories of CAD/CAM systems using metal, ceramic, and composite materials to fabricate dental prostheses, orthodontic appliance and surgical guide, etc. Subtractive manufacturing processes like milling could reduce flaws and pores which may be caused by the casting process under high industrial standards. Additive manufacturing processes like selective laser melting (SLM) could produce the metal substrate by fusing metal powder in layers without much porosity. There is still not enough evidence to research new materials and processing procedures using the novel technology. Traditional casting techniques are still the dominant methods in dental metal processing.

Thus, we are pleased to invite you to submit a manuscript including original research articles and reviews for this Special Issue concerning any kinds of advances in metal-based and ceramic-based dental materials.

Dr. Tomofumi Sawada
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • dental materials
  • ceramic
  • metal
  • composite
  • CAD/CAM
  • subtractive manufacturing
  • additive manufacturing
  • casting
  • ceramic restoration
  • biomaterials

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Published Papers (2 papers)

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Research

12 pages, 1444 KiB  
Article
The Toothbrushing Effects on Surface Properties and Color Stability of CAD/CAM and Pressable Ceramic Fixed Restorations—An In Vitro Study
by Amr A. Mahrous, Abdullah Alhammad, Faisal Alqahtani, Yousif Aljar, Ahmed Alkadi, Noha Taymour, Abdulkareem Alotaibi, Sultan Akhtar and Mohammed M. Gad
Materials 2023, 16(8), 2950; https://doi.org/10.3390/ma16082950 - 7 Apr 2023
Cited by 4 | Viewed by 2009
Abstract
Pressable ceramic restorations have been introduced and investigated, and found comparable to CAD/CAM ceramic in terms of mechanical properties; however, the effect of toothbrushing on the pressable ceramic has not been thoroughly investigated. The objective of the current study was to assess the [...] Read more.
Pressable ceramic restorations have been introduced and investigated, and found comparable to CAD/CAM ceramic in terms of mechanical properties; however, the effect of toothbrushing on the pressable ceramic has not been thoroughly investigated. The objective of the current study was to assess the effect of artificial toothbrushing simulation on the surface roughness, microhardness, and color stability of different ceramic materials. Three lithium disilicate-based ceramics (IPS Emax CAD [EC], IPS Emax Press [EP]; (Ivoclar Vivadent AG), and LiSi Press [LP] (GC Corp, Tokyo, Japan)) were examined. For each ceramic material, eight bar-shaped specimens were prepared and subjected to 10,000 brushing cycles. Surface roughness, microhardness, and color stability (∆E) were measured before and after brushing. Scanning electron microscopy (SEM) was used for surface profile analysis. The results were analyzed using one-way ANOVA, Tukey’s post hoc test, and paired sample t-test α = 0.05. The findings revealed a non-significant decrease in the surface roughness of EC, EP, and LP groups (p > 0.05), and both LP and EP have the lowest surface roughness values (0.64 ± 0.13, 0.64 ± 0.08 µm) after brushing, respectively. Toothbrushing showed a decrease in the microhardness of the three groups: EC and LP, p < 0.001; EP, p = 0.012). EP showed the lowest hardness value after brushing (862.45 ± 273.83). No significant changes (∆E) were observed in all groups (p > 0.05); however, the EC group was found to be considerably affected by color changes, in comparison to the EC and LP groups. Toothbrushing had no effect on surface roughness and color stability of all tested materials, but it decreased the microhardness. Material type, surface treatments, and glazing of ceramic materials contributed to the surface changes in the ceramic materials, necessitating further investigations in terms of the toothbrushing effect with different glazing as variables. Full article
(This article belongs to the Special Issue Advances in Metal-Based and Ceramic-Based Dental Materials)
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15 pages, 2604 KiB  
Article
Wear Behavior between Aesthetic Restorative Materials and Bovine Tooth Enamel
by Akihiko Hatanaka, Tomofumi Sawada, Kazuyo Sen, Takahiro Saito, Kaori Sasaki, Tomoko Someya, Masayuki Hattori and Shinji Takemoto
Materials 2022, 15(15), 5234; https://doi.org/10.3390/ma15155234 - 28 Jul 2022
Cited by 6 | Viewed by 1930
Abstract
Tooth enamel wear occurs because of daily mastication and occlusion. This study investigated the wear behavior of bovine teeth against aesthetic restorative materials in vitro. Abrader specimens were fabricated using four tooth-colored restorative materials (zirconia, lithium disilicate glass ceramic, dental porcelain, and resin [...] Read more.
Tooth enamel wear occurs because of daily mastication and occlusion. This study investigated the wear behavior of bovine teeth against aesthetic restorative materials in vitro. Abrader specimens were fabricated using four tooth-colored restorative materials (zirconia, lithium disilicate glass ceramic, dental porcelain, and resin composite), with bovine tooth enamel as a control. Flattened bovine tooth enamel was used as the substrate specimen. These materials were characterized by Vickers hardness tests and surface roughness measurements. Two-body wear tests between the abrader and substrate specimens were performed, and the worn topographies were evaluated using a contour-measuring instrument and 3D laser microscope. The restorative materials and bovine tooth enamel had similar surface roughness but different hardness and wear behaviors. Bovine teeth showed the largest wear in tooth–tooth contact as the abrader and substrate specimens. Compared to bovine teeth, zirconia, lithium disilicate glass ceramic, and dental porcelain showed greater hardness and less wear on their surfaces, and less substrate wear of the opposite tooth enamel. The lowest hardness resin composite showed intermediate wear on its surface, resulting in the lowest substrate wear. Accordingly, dentists should pay attention to the selection of restorative materials to reconstruct their morphologies owing to different wear behaviors. Full article
(This article belongs to the Special Issue Advances in Metal-Based and Ceramic-Based Dental Materials)
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