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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: 20 April 2025 | Viewed by 4221

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Special Issue Editors

Prof. Dr. Anca Jivănescu

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Guest Editor

Department of Prosthodontics, Faculty of Dental Medicine, University of Medicine and Pharmacy “Victor Babeș” Timișoara, 300070 Timișoara, Romania
Interests: intraoral scanning; face scanning; minim invasive restorations; CAD/CAM materials; 3D-printed materials

Prof. Dr. Diana Dudea

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Guest Editor

Department of Prosthodontics and Dental Materials, University of Medicine and Pharmacy “Iuliu Hatieganu”, 400006 Cluj-Napoca, Romania
Interests: restorative dentistry; esthetic dentistry; teaching and learning; ceramics; materials; medical and health profession education; composites; periodontics and oral; pathology; learning; composite resins
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Special Issue Information

Dear Colleagues,

We are pleased to invite you to a Special Issue, entitled “New Materials and Techniques in Restorative Dentistry”. For this Special Issue, we would like you to submit studies and findings which contribute to improving our understanding of today’s various options for the aesthetic and functional restoration of teeth. This Special Issue will focus on digital technologies and materials that can provide more precise, conservative, and predictable treatment options.

Nowadays, the evolution of materials and technologies that are constantly added to the therapeutic options can create confusion among dental practitioners. In order to make an appropriate selection for each clinical case, extensive research is needed, especially in the form of clinical studies that can provide accurate data for improving the longevity of restorations fabricated with different digital technologies and materials.

This Special Issue aims to focus on in vivo and in vitro studies of digitally manufactured and minimally invasive tooth restorations. The main advantages of the digital workflow to create minimally invasive restorations include higher efficiency and accuracy, simplified protocols, and reduced manufacturing time.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

Intraoral scanning, strategy, and accuracy;
Minimal invasive restorations (direct and indirect);
CAD/CAM ceramic properties and advantages;
3D-printed materials.

Prof. Dr. Anca Jivănescu
Prof. Dr. Diana Dudea
Guest Editors

Manuscript Submission Information

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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. Applied Sciences 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 2400 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

intraoral scanning
face scanning technology
CAD/CAM materials
milling and 3D printing technologies
minimally invasive restorations

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Published Papers (5 papers)

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Research

14 pages, 1633 KiB

Open AccessArticle

The Influence of Ionizing Radiation on Fluoride Release from Restorative Dental Materials: A Comparative In Vitro Study

by Sara Čekalović Agović, Eva Klarić, Ana Ivanišević, Majana Soče, Timor Grego and Irena Radin Nujić

Appl. Sci. 2024, 14(21), 9701; https://doi.org/10.3390/app14219701 - 24 Oct 2024

Viewed by 575

Abstract

To examine the effect of ionizing radiation on fluoride release from restorative dental materials, samples of Equia Forte HT, Fuji Triage, Fuji IX, Cention Forte, Activa Presto, Beautifil II, and Luminos (n = 10) were made in Teflon molds and divided into a control group and an experimental group. The experimental group was exposed to ionizing radiation for a total of 35 days (70 Gy, 2 Gy per day). The fluoride release was measured with a fluorine-selective electrode. The median recorded fluoride values were higher with Equia Forte HT, Fuji Triage, and Fuji IX compared to others during the entire period in both groups. With Activa Presto, a higher release of fluoride was recorded in the experimental group on the first day of irradiation, while a higher release was recorded in the control group, as well as with Luminos and Beautifil II. With Cention Forte, there was no significant difference in fluoride release between the experimental and control groups except on the sixth day. With Fuji Triage and Fuji IX, the release of fluoride was higher in the experimental group compared to the control group, while with Equia Forte HT, there was no difference between the groups. In conclusion, ionizing radiation has no major effect on fluoride release in all the tested materials. Full article

(This article belongs to the Special Issue New Materials and Techniques in Restorative Dentistry)

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10 pages, 3238 KiB

Open AccessArticle

The Effect of Silane Treatment of a Resin-Based Composite on Its Microtensile Bond Strength to a Ceramic Restorative Material

by Akiko Haruyama, Takashi Muramatsu and Atsushi Kameyama

Appl. Sci. 2024, 14(20), 9178; https://doi.org/10.3390/app14209178 - 10 Oct 2024

Viewed by 540

Abstract

The purpose of this study was to investigate the effect of silane treatment of a resin-coated resin-based composite (RBC) base material on its microtensile bond strength (μTBS) to a computer aided-design/computer-aided manufacturing (CAD/CAM) ceramic restorative material. RBC blocks (4 mm × 7 mm × 10 mm) were prepared, and the adherend surfaces were prepared as follows: no resin coating + no silane treatment (Group I), no resin coating + silane treatment (Group II), resin coating only (Group III), and resin coating + silane treatment (Group IV). The resin coating was applied with Clearfil SE Bond and flowable RBC to the adherend surface. Each treated sample was bonded to a ceramic block using Panavia V5. After storage in 37 °C water for 1 week, microspecimens were fabricated, and the μTBS was tested. The failure mode of each specimen was determined using stereomicroscopy and scanning electron microscopy. The µTBS of Group II (20.2 ± 4.0 MPa) was not significantly different from that of Group I (17.6 ± 5.9 MPa) (p > 0.05), and the µTBS of Group I was significantly smaller than that of Group III (21.3 ± 7.2 MPa) (p < 0.05). The µTBS of Group IV (24.9 ± 3.8 MPa) was significantly greater than that of Group III (p < 0.05). Our findings indicate that silane treatment of the resin-coated surface can enhance the µTBS. Silane treatment of RBC base material was not effective when prepared without resin coating. Full article

(This article belongs to the Special Issue New Materials and Techniques in Restorative Dentistry)

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15 pages, 5005 KiB

Open AccessArticle

Differences in Soft Tissue Wound Healing between Immediate and Delayed Implant Placement: An Experimental Preclinical In Vivo Investigation

by Rafael Pla, Javier Sanz-Esporrin, David Palombo, Fabio Vignoletti, Fernando Luengo and Mariano Sanz

Appl. Sci. 2024, 14(18), 8469; https://doi.org/10.3390/app14188469 - 20 Sep 2024

Viewed by 716

Abstract

The dynamics of tissue wound healing associated with dental implants placed in fresh extraction sockets or in healed alveolar ridges are not fully understood. Therefore, the aim of this preclinical in vivo investigation was to evaluate soft tissue healing and osseointegration after immediate implant placement, compared with delayed implant placement, using histomorphometric and immunohistochemical analyses. Methods: In 8 dogs, immediate postextraction implants and delayed implants were evaluated. After 2 and 8 weeks of healing, dissected tissue blocks were processed for calcified and decalcified histological analysis. Histometric measurements for soft tissue height and width were performed. Immunohistochemical analysis for the evaluation of bone metabolism, immune response and angiogenesis was performed. Results: At 2 weeks, histometric analysis showed that peri-implant soft tissue height was significantly greater in the immediate implant group (4.47 mm ± 0.78) compared to the delayed implant group (2.92 mm ± 0.51, p = 0.028), primarily due to the connective tissue height. Immunohistochemical analysis indicated significantly higher alkaline phosphatase (ALP) (6.85 ± 5.17 vs. 3.56 ± 2.31, p < 0.05) and matrix metalloproteinase (MMP2) activity (1.59 ± 1.64 vs. 0.58 ± 0.48, p < 0.05) in immediate implants, suggesting increased osteogenic and matrix metalloproteinase activity. At 8 weeks, the peri-implant soft tissue height remained higher in the immediate implant group (3.43 mm ± 0.83) compared to the delayed implant group (2.4 mm ± 0.37, p = 0.088), although the difference was less pronounced. Immunohistochemical differences between groups diminished in late healing stages. Conclusions: Soft tissue dimensions around immediate implants differ from those established around staged implants placed on healed alveolar ridges. Moreover, osseointegration dynamics around immediate implants may occur at a different rate compared with staged implants. Full article

(This article belongs to the Special Issue New Materials and Techniques in Restorative Dentistry)

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21 pages, 18790 KiB

Open AccessArticle

Considerations Regarding Sandblasting of Ti and Ti6Al4V Used in Dental Implants and Abutments as a Preconditioning Stage for Restorative Dentistry Works

by Ioana-Alina Ciobotaru, Maria Stoicanescu, Roxana Budei, Anca Cojocaru and Danut-Ionel Vaireanu

Appl. Sci. 2024, 14(16), 7365; https://doi.org/10.3390/app14167365 - 21 Aug 2024

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Abstract

Sandblasting materials used for dental restoration are a valuable preconditioning technique that enhances the physical properties and promotes osseointegration and cell adhesion. Triplicate groups of Ti medical grade 4 and Ti6Al4V were blasted with 16 series of various naturally occurring and synthetically produced spraying materials of controlled granulometry at three spraying durations each and two spraying pressures, and the results were tested for the determination of the surface roughness taken as an average of 80 points ±5 points for each particular series of operating parameters. SEM analysis and specific tests to see whether or not cell cultures proliferate on the treated materials were also conducted. It was found that in all cases, regardless of the spraying material or working conditions, the roughness profile achieved is a uniformly distributed one. A reduction in the blasting pressure by half led to a decrease in the roughness between 30 and 35%. The use of glass balls as blasting material led to decreased roughness and more uniformly distributed roughness values for Ti as well as for Ti6Al4V, regardless of spraying duration or applied pressure compared to other spraying materials. Blasting with olivine led to increased, as well as uniformly distributed, values, and hence the conclusion that one may control the roughness size by choosing one or another of the above materials without the need to change any other operating parameters. In the case of Ti, the achieved roughness is greater than in the case of Ti4Al6V, regardless of the blasting material; the differences are smaller the softer the sandblasting material due to the fact that Ti alloys have better mechanical properties and increased hardness compared to pure Ti. SEM analysis showed that the use of sintered hydroxyapatite as an additive to the blasting material does not necessarily lead to a substantial deposition of hydroxyapatite on the substrate materials; only traces of it were identified during the analysis. As a general conclusion, this study showed that by sandblasting Ti and Ti6Al4V with different spraying materials, one may control the surface roughness, and this technique may be an attractive method for preconditioning these materials for restorative dentistry. Full article

(This article belongs to the Special Issue New Materials and Techniques in Restorative Dentistry)

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11 pages, 488 KiB

Open AccessArticle

Impact of Various Cavity-Preparation Designs on Fracture Resistance and Failure Mode of CAD/CAM Fabricated Ceramic Inlays and Onlays

by Ali Atef Elkaffas, Abdullah Mohammed Alshehri, Ali Robaian Alqahtani, Refal Saad Albaijan and Tarek Ahmed Soliman

Appl. Sci. 2024, 14(9), 3816; https://doi.org/10.3390/app14093816 - 30 Apr 2024

Viewed by 1275

Abstract

In recent years, CAD/CAM technology has allowed indirect ceramic restorations to become a part of everyday chairside clinical practice. Therefore, the impact of different cavity-preparation designs on the fracture resistance of CAD/CAM fabricated ceramics was assessed in this study. Three designs of cuspal covering (none, palatal, and entire) and two widths of the occlusal isthmus (75% and 100% of the intercuspal distance) were used for the preparation of inlays and onlays to form six groups (n = 10/group). Moreover, thermomechanical cyclic loading was applied to every tooth under a chewing simulator. A universal testing machine was used to measure each group’s fracture resistance. The tested specimens were inspected for any signs of fractures and cracks to categorize failure patterns. Thereby, the values of fracture strength showed that there were statistically nonsignificant differences between the tested groups (p < 0.05). However, a significant difference (p = 0.01) was found between group 1 (inlays) (1950 ± 405) and group 6 (onlays) (3900 ± 770). Type III or type IV fracture modes were seen in the majority of the specimens. In conclusion, inlays and onlays made of zirconia using CAD/CAM technology were deemed reliable for restoring premolars, irrespective of the cavity-preparation design, except for inlays with a 75% intercuspal distance. Full article

(This article belongs to the Special Issue New Materials and Techniques in Restorative Dentistry)

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