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Biomaterials for Restorative Dentistry
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Biomaterials for Restorative Dentistry

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Biomaterials".

Deadline for manuscript submissions: 20 February 2025 | Viewed by 3062

Special Issue Editor

Dr. Matej Par

E-Mail Website
Guest Editor
Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia
Interests: dental resin composites; experimental composites; materials characterization; bioactive restorative materials; bioactive glass
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Despite numerous advances in biomaterials for restorative dentistry, each material still has its own particular weaknesses that need to be addressed. This drives the study of both experimental materials with a well-defined composition to address a specific hypothesis and commercially available materials that are studied as integrated systems with a predefined composition and multiple interacting components. As research in this field is progressing rapidly, many new materials are being developed and introduced to the dental market without a thorough understanding of their behavior under demanding conditions in the oral cavity.

We invite the submission of in vitro or clinical studies that address the mechanical, chemical, or biological properties of all types of biomaterials for restorative dentistry. However, this Special Issue is not limited to the topics mentioned above. All manuscripts dealing with relevant studies on biomaterials and their applications in dentistry will be considered.

Dr. Matej Par
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

  • restorative dentistry
  • biomaterials
  • resin composite
  • glass ionomer
  • bioactive materials
  • experimental materials

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Published Papers (4 papers)

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Research

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13 pages, 1878 KiB  
Article
Evaluation of Polymethyl Methacrylate as a Provisional Material in a Fully Digital Workflow for Immediate-Load Complete-Arch Implant-Supported Prostheses over Three Months
by Luis Carlos Garza, Eduardo Crooke, Marta Vallés, Joan Soliva, Xavier Rodríguez, Mariona Rodeja and Miguel Roig
Materials 2025, 18(3), 562; https://doi.org/10.3390/ma18030562 - 26 Jan 2025
Viewed by 298
Abstract
While complete-arch digital-implant-scanning protocols have been described, their clinical outcomes when using polymethyl methacrylate (PMMA) as a provisional material remain insufficiently substantiated. This clinical study aims to integrate digital solutions into implant dentistry and establish PMMA as a reliable material for immediate-loaded protocols. [...] Read more.
While complete-arch digital-implant-scanning protocols have been described, their clinical outcomes when using polymethyl methacrylate (PMMA) as a provisional material remain insufficiently substantiated. This clinical study aims to integrate digital solutions into implant dentistry and establish PMMA as a reliable material for immediate-loaded protocols. Fifty-six patients received 432 implants and 72 immediate fixed interim complete-arch prostheses, all fabricated using a fully digital workflow. Patients were followed up at 3 months to evaluate implant survival, prosthesis survival, and implant mean marginal bone loss using an interim PMMA prosthesis. Patients completed the Oral Health Impact Profile (OHIP) questionnaire to determine the implants’ impact on quality of life. Statistical analyses included analysis of variance, Fisher’s least significant difference (LSD) test, and the Wilcoxon signed-rank test. Of the 432 implants placed, only two failures were observed. Marginal bone loss (MBL) was significantly greater in male patients (p = 0.002) and older smokers (p = 0.016). Patient-reported outcomes, as measured by the OHIP questionnaire, demonstrated significant improvements in quality of life. PMMA is a reliable material for immediate-loading protocols in fixed interim complete-arch implant prostheses. Its combination of mechanical strength, biocompatibility, and esthetic properties, along with the accuracy of fully digital workflows, ensures predictable clinical outcomes. Full article
(This article belongs to the Special Issue Biomaterials for Restorative Dentistry)
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10 pages, 2625 KiB  
Article
Effect of Different Working Settings of Sandblasting on Resin Composite Repair Bond Strength
by Clemens Lechte, Erik Hohmann, Annette Wiegand and Philipp Kanzow
Materials 2025, 18(2), 313; https://doi.org/10.3390/ma18020313 - 12 Jan 2025
Viewed by 457
Abstract
To investigate the effect of different sandblasting settings on the shear bond strength (SBS) in the repair of resin composite, specimens (resin composite, enamel, and dentin; each group n = 16) were sandblasted by varying the parameters of air pressure (0.2/0.3/0.4 MPa), angle [...] Read more.
To investigate the effect of different sandblasting settings on the shear bond strength (SBS) in the repair of resin composite, specimens (resin composite, enamel, and dentin; each group n = 16) were sandblasted by varying the parameters of air pressure (0.2/0.3/0.4 MPa), angle (45/90°), particle size (27/50 μm), tip size (0.8/1.2 mm), and distance (2/5/10 mm) prior to the application of a universal adhesive (Adhese Universal) and resin composite (adhesive area: 7.07 mm2). The specimens were subjected to artificial aging (10,000 cycles, 5–55 °C) prior to (resin composite only) and after repair. Groups without mechanical pretreatment and resin composite incremental bond strength served as controls. Statistical analysis was performed using ANOVAs, post hoc tests, and Chi2-tests (p < 0.05). Only air pressure and distance impacted SBS (p ≤ 0.049). However, resin composite SBS did not differ from the resin composite incremental SBS within all sandblasting settings (positive control: 21.0 ± 5.0 MPa, p ≥ 0.566). While sandblasting did not impact bond strength on enamel (control: 20.5 ± 5.1 MPa, p ≥ 0.999), most settings resulted in a lower bond strength on dentin (control: 20.1 ± 4.7 MPa, p ≤ 0.027). In conclusion, sandblasting significantly improves resin composite repair bond strength, while application parameters are of minor relevance. Full article
(This article belongs to the Special Issue Biomaterials for Restorative Dentistry)
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13 pages, 1290 KiB  
Article
Mechanical Properties of Alkasite Material with Different Curing Modes and Simulated Aging Conditions
by Visnja Negovetic Mandic, Laura Plancak, Danijela Marovic, Zrinka Tarle, Milena Trutina Gavran and Matej Par
Materials 2024, 17(11), 2777; https://doi.org/10.3390/ma17112777 - 6 Jun 2024
Viewed by 960
Abstract
This study aimed to evaluate the micro-mechanical and macro-mechanical properties of self-cured and light-cured alkasite and to investigate how accelerated degradation in acidic, alkaline, and ethanol solutions affects the macro-mechanical properties of self-cured and light-cured alkasite. The specimens of the alkasite material (Cention [...] Read more.
This study aimed to evaluate the micro-mechanical and macro-mechanical properties of self-cured and light-cured alkasite and to investigate how accelerated degradation in acidic, alkaline, and ethanol solutions affects the macro-mechanical properties of self-cured and light-cured alkasite. The specimens of the alkasite material (Cention Forte, Ivoclar Vivadent) were prepared according to the following three curing modes: (1) light-cured immediately, (2) light-cured after a 5-min delay, and (3) self-cured. Microhardness was tested before and after immersion in absolute ethanol to indirectly determine crosslink density, while flexural strength and flexural modulus were measured using a three-point bending test after accelerated aging in the following solutions: (1) lactic acid solution (pH = 4.0), (2) NaOH solution (pH = 13.0), (3) phosphate-buffered saline solution (pH = 7.4), and (4) 75% ethanol solution. The data were statistically analyzed using a two-way ANOVA and Tukey post hoc test. The results showed that the microhardness, flexural strength, and flexural modulus were significantly lower in self-cured specimens compared to light-cured specimens. A 5-min delay between the extrusion of the material from the capsule and light curing had no significant effect on any of the measured properties. A significant effect of the accelerated aging solutions on macro-mechanical properties was observed, with ethanol and alkaline solutions having a particularly detrimental effect. In conclusion, light curing was preferable to self-curing, as it resulted in significantly better micro- and macro-mechanical properties, while a 5-min delay between mixing the capsule and light curing had no negative effects. Full article
(This article belongs to the Special Issue Biomaterials for Restorative Dentistry)
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Other

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18 pages, 691 KiB  
Systematic Review
Coating Materials to Prevent Screw Loosening in Single Dental Implant Crowns: A Systematic Review
by Lara Coelho, Maria-Cristina Manzanares-Céspedes, Joana Mendes, Victòria Tallón-Walton, Wilson Astudillo-Rozas, Carlos Aroso and José Manuel Mendes
Materials 2024, 17(20), 5053; https://doi.org/10.3390/ma17205053 - 16 Oct 2024
Viewed by 1019
Abstract
Oral rehabilitation with dental implants has resulted in high success rates. However, some complications have been described, such as the loss of the prosthetic screw. Some manufacturers sell screws with different coatings to avoid screw loosening, but even these types of screws can [...] Read more.
Oral rehabilitation with dental implants has resulted in high success rates. However, some complications have been described, such as the loss of the prosthetic screw. Some manufacturers sell screws with different coatings to avoid screw loosening, but even these types of screws can come loose. We aimed to investigate the screw coatings that can be applied during a dental appointment to avoid screw loosening. Following PRISMA Guidelines, we searched PubMed/Medline, Embase and Web of Science for studies published up to January 2024. All studies of single dental implant crowns, in which the prosthetic screw was coated with a lubricant and the preload and/or the removal torque value (RTV) was recorded, were analyzed. We excluded studies applying the finite element method (FEM) as well as studies without a control group. The risk of bias was assessed with a tool developed by our research group. Of the 1959 records identified, 19 were selected. Ten studies were considered to have a low risk of bias, and nine were considered to have a medium risk of bias. The coatings tested were adhesives, saliva, chlorhexidine, Vaseline, silicone gel, Polytetrafluoroethylene (PTFE) tape, blood, fluoride, Listerine® Mouthwash and normal saline. The preload, the RTV with and without cyclic loading and the percentage of RTV loss were recorded. Some coatings show promise, although there is no clear evidence that any option is superior in minimizing screw loosening. Full article
(This article belongs to the Special Issue Biomaterials for Restorative Dentistry)
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