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Behaviour of Dental Composite Materials
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Behaviour of Dental Composite Materials

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

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 9727

Special Issue Editor

Prof. Dr. Alexandra Ripszky Totan

E-Mail Website
Guest Editor
1. Biochemistry Department, Dental Medicine Faculty, University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
2. The Interdisciplinary Center for Dental Research and Development, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
Interests: dental materials biocompatibility; saliva biochemistry; oral cancer; oxidative stress
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Composite resins are widely used in dentistry, for both direct and indirect restorations and have been constantly improved with every new generation of products. Over the last decade, digital technology (CAD/CAM) has challenged the classical approach and has been rapidly adopted in restorative dentistry, management of temporomandibular disorders, orthodontics, and orthognathic surgery.

One further step in this direction is three-dimensional printing, which is beginning to play an increasingly important role in dentistry, especially for interim prosthetic restorations. This technique used for obtaining temporary prosthesis has distinct advantages compared to the conventional ones.

Unfortunately, resin-based dental materials are not inert in the oral environment and may release components, initially due to incomplete polymerization, and later due to degradation. Consequently, more precise knowledge of the actual quantity of released eluates is necessary. Saliva is a remarkable liquid which protects the oral mucosa against biological, mechanical, and chemical factors, and bacterial, viral, and fungal attacks, acting as a coordinator of the oral cavity ecosystem’s balance.

Considering the limited number of studies focused on the biocompatibility of these modern materials, especially 3D-printed materials, this Special Issue will present and discuss more aspects regarding their possible interactions with saliva and the oral environment.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Dr. Alexandra Totan
Guest Editor

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Keywords

  • 3D print materials
  • CAD/CAM technologies
  • Composite resins
  • Monomer release
  • Curing behaviour
  • Wear resistance
  • Polymerization
  • Oxidative stress
  • Inflammation
  • Saliva

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Published Papers (3 papers)

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Research

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15 pages, 3084 KiB  
Article
Biochemical Interaction between Materials Used for Interim Prosthetic Restorations and Saliva
by Mihaela Pantea, Alexandra Ripszky Totan, Marina Imre, Alexandru Eugen Petre, Ana Maria Cristina Țâncu, Cristian Tudos, Alexandru Titus Farcașiu, Mihai Butucescu and Tudor Claudiu Spînu
Materials 2022, 15(1), 226; https://doi.org/10.3390/ma15010226 - 29 Dec 2021
Cited by 4 | Viewed by 2076
Abstract
The purpose of this study was to analyze the oxidative stress level and inflammatory status of saliva in the presence of certain materials used for obtaining interim prosthetic restorations. Four types of interim resin materials were investigated: a pressure/heat-cured acrylic resin (Superpont C+B, [...] Read more.
The purpose of this study was to analyze the oxidative stress level and inflammatory status of saliva in the presence of certain materials used for obtaining interim prosthetic restorations. Four types of interim resin materials were investigated: a pressure/heat-cured acrylic resin (Superpont C+B, SpofaDental a.s Czech Republic, /KaVo Kerr Group), a milled resin (Telio CAD polymethyl methacrylate, Ivoclar Vivadent AG, Liechtenstein), a 3D printed resin (NextDent C&B MFH, NextDent by 3D Systems, the Netherlands), and a pressure/heat-cured micro-filled indirect composite resin (SR Chromasit, Ivoclar Vivadent AG, Liechtenstein). The disk-shaped resin samples (30 mm diameter, 2 mm high) were obtained in line with the producers’ recommendations. The resulting resin specimens were incubated with saliva samples collected from twenty healthy volunteers. In order to analyze the antioxidant activity of the tested materials, certain salivary parameters were evaluated before and after incubation: uric acid, gamma glutamyl transferase (GGT), oxidative stress responsive kinase-1 (OXSR-1), and total antioxidant capacity (TAC); the salivary levels of tumor necrosis factor (TNFα) and interleukin-6 (IL-6) (inflammatory markers) were measured as well. The obtained results are overall favorable, showing that the tested materials did not cause significant changes in the salivary oxidative stress level and did not influence the inflammatory salivary status. Full article
(This article belongs to the Special Issue Behaviour of Dental Composite Materials)
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15 pages, 2245 KiB  
Article
Cytotoxic and Genotoxic Effects of Composite Resins on Cultured Human Gingival Fibroblasts
by Francesco De Angelis, Domitilla Mandatori, Valeria Schiavone, Francesco Paolo Melito, Silvia Valentinuzzi, Mirco Vadini, Pamela Di Tomo, Lorenzo Vanini, Letizia Pelusi, Caterina Pipino, Piero Del Boccio, Camillo D’Arcangelo and Assunta Pandolfi
Materials 2021, 14(18), 5225; https://doi.org/10.3390/ma14185225 - 11 Sep 2021
Cited by 18 | Viewed by 2355
Abstract
The aim of the study was to evaluate the cytotoxic and genotoxic potential of five commercially available dental composite resins (CRs), investigating the effect of their quantifiable bisphenol-A-glycidyl-methacrylate (Bis-GMA) and/or triethylene glycol dimethacrylate (TEGDMA) release. Experiments were performed using the method of soaking [...] Read more.
The aim of the study was to evaluate the cytotoxic and genotoxic potential of five commercially available dental composite resins (CRs), investigating the effect of their quantifiable bisphenol-A-glycidyl-methacrylate (Bis-GMA) and/or triethylene glycol dimethacrylate (TEGDMA) release. Experiments were performed using the method of soaking extracts, which were derived from the immersion of the following CRs in the culture medium: Clearfil-Majesty-ES-2, GrandioSO, and Enamel-plus-HRi (Bis-GMA-based); Enamel-BioFunction and VenusDiamond (Bis-GMA-free). Human Gingival Fibroblasts (hGDFs) were employed as the cellular model to mimic in vitro the oral cavity milieu, where CRs simultaneously release various components. Cell metabolic activity, oxidative stress, and genotoxicity were used as cellular outcomes. Results showed that only VenusDiamond and Enamel-plus-HRi significantly affected the hGDF cell metabolic activity. In accordance with this, although no CR-derived extract induced a significantly detectable oxidative stress, only VenusDiamond and Enamel-plus-HRi induced significant genotoxicity. Our findings showed, for the CRs employed, a cytotoxic and genotoxic potential that did not seem to depend only on the actual Bis-GMA or TEGDMA content. Enamel-BioFunction appeared optimal in terms of cytotoxicity, and similar findings were observed for Clearfil-Majesty-ES-2 despite their different Bis-GMA/TEGDMA release patterns. This suggested that simply excluding one specific monomer from the CR formulation might not steadily turn out as a successful approach for improving their biocompatibility. Full article
(This article belongs to the Special Issue Behaviour of Dental Composite Materials)
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Review

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18 pages, 966 KiB  
Review
Prosthetic Materials Used for Implant-Supported Restorations and Their Biochemical Oral Interactions: A Narrative Review
by Roxana Nicoleta Ionescu, Alexandra Ripszky Totan, Marina Meleșcanu Imre, Ana Maria Cristina Țâncu, Mihaela Pantea, Mihai Butucescu and Alexandru Titus Farcașiu
Materials 2022, 15(3), 1016; https://doi.org/10.3390/ma15031016 - 28 Jan 2022
Cited by 25 | Viewed by 4626
Abstract
The purpose of this study is to outline relevant elements regarding the biochemical interactions between prosthetic materials used for obtaining implant-supported restorations and the oral environment. Implant-supported prostheses have seen unprecedented development in recent years, benefiting from the emergence of both new prosthetic [...] Read more.
The purpose of this study is to outline relevant elements regarding the biochemical interactions between prosthetic materials used for obtaining implant-supported restorations and the oral environment. Implant-supported prostheses have seen unprecedented development in recent years, benefiting from the emergence of both new prosthetic materials (with increased biocompatibility and very good mechanical behavior), and computerized manufacturing technologies, which offer predictability, accuracy, and reproducibility. On the other hand, the quality of conventional materials for obtaining implant-supported prostheses is acknowledged, as they have already proven their clinical performance. The properties of PMMA (poly (methyl methacrylate))—which is a representative interim material frequently used in prosthodontics—and of PEEK (polyether ether ketone)—a biomaterial which is placed on the border between interim and final prosthetic use—are highlighted in order to illustrate the complex way these materials interact with the oral environment. In regard to definitive prosthetic materials used for obtaining implant-supported prostheses, emphasis is placed on zirconia-based ceramics. Zirconia exhibits several distinctive advantages (excellent aesthetics, good mechanical behavior, biocompatibility), through which its clinical applicability has become increasingly wide. Zirconia’s interaction with the oral environment (fibroblasts, osteoblasts, dental pulp cells, macrophages) is presented in a relevant synthesis, thus revealing its good biocompatibility. Full article
(This article belongs to the Special Issue Behaviour of Dental Composite Materials)
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