Mărioara MOLDOVAN
Mărioara Moldovan, Ph.D., Research Professor, Head of "Polymeric Composite" Laboratory, Babes Bloyai University, Cluj-Napoca, Romania. Her research activity was focused on the study and development of the new technologies for synthesis and obtaining of nanostructured powders and other precursors for the composite materials (glasses, based monomer organic matrix) and of the experimental biomaterials with different application in dentistry and medicine. Dr. Marioara's research also encompasses lecturing and practical training for undergraduate, master's, and postgraduate students.
The major scientific interests involve problems related to development of technologies for obtaining micro and nanofiller, biomaterials and bioadhesives used in medicine: a) dental composites used for restoration b) sealants used for the prophylaxis of caries with children, c) synthesis and characterization inorganic materials e.g., micro-and nanocrystalline powders, bioglasses, as fillers for polymeric composites; d) synthesis of nanofillers by sol-gel method and stabilization of nanoparticles; e) surface treatments of inorganic particles with coupling agent, to make them compatible with the organic matrix of the composites; f) materials with biocompatible properties for the dental implants g) biomaterial used as skull bone replacement h) biomaterial used as meninges replacement; i) composites able to form thin films with adhesive properties cured at UV-radiation or visible light-cured, respectively. Her work focus primarily on the synthesis and characterization of micro and nanofiller, bioglasses, ceramics and biodegradable polymer (polylactic acid) used in bioadhesives and composite materials and on the studying the influence of inorganic matrix upon the physico-chemical and mechanical properties of the harden adhesive and composite materials.
Abstract
Recent Advances and Developments in Composite Dental Materials in Romania
Marioara Moldovan1, Doina Prodan1, Stanca Cuc1, Gabriel Furtos1, Codruta Sarosi1
1 Babes-Bolyai University, Institute of Chemistry “Raluca Ripan”, Cluj-Napoca, Romania, mmarioara2004@yahoo.com; marioara.moldovan@ubbcluj.ro
Introduction. Romania has seen significant progress in the field of composite dental materials, driven by advances in materials science and technology. Researchers and clinicians are enhancing dental composites by addressing limitations and expanding clinical applications.
Experimental. Some of the key areas are: Bioactive Composites: Traditional dental composites are primarily bio-inert, serving as replacements for lost tooth structure without interacting with the surrounding tissues. Recent research is focusing on developing bioactive composites that not only restore tooth function but also actively contribute to oral health. These new materials aim to inhibit caries, modulate biofilm formation, and protect adjacent tooth structures, thereby increasing the longevity of restorations. Improvement in Polymerization Techniques: Polymerization-induced shrinkage and stress are significant challenges that can compromise the integrity and durability of composite restorations. Are explored the advanced polymerization techniques and initiator systems to reduce shrinkage, improve curing, and minimize residual stress. Enhanced Mechanical Properties: The mechanical strength and toughness of dental composites are critical for their performance in the oral environment. Innovations in filler materials and coupling agents in Romania aim to enhance composite toughness and wear resistance without compromising aesthetics or usability. Development of Therapeutic Composites: Future directions in Romania include the creation of composites with therapeutic properties. These materials would not only restore the tooth but also release therapeutic agents that help in the regeneration of dental tissues, reduce inflammation, and promote overall oral health. Monomer Innovations: The presence of unreacted monomers post-polymerization can affect the biocompatibility and durability of dental composites. Romanian advancements focus on developing new monomers with higher reactivity and lower toxicity to enhance the performance of dental composites.
Conclusions. These developments represent a promising future for composite dental materials in Romania, with ongoing research likely to lead to further innovations that will benefit both patients and dental practitioners.
References.
[1] Moldovan,M.; Dudea, D.; Cuc, S.; Sarosi, C.; Prodan, D.; Petean,I.; Furtos, G.; Ionescu, A.; Ilie,N. Chemical and Structural Assessment of New Dental Composites with Graphene Exposed to Staining Agents, J. Funct. Biomater. 2023, 14 (3), 163
[2] Sarosi, C.; Moldovan, M.; Soanca, A.; Roman, A.; Gherman, T.; Trifoi,A.; Chisnoiu, A.M., Cuc,S.; Filip, M.; Gheorghe, G.F.; Chisnoiu,R.M. Effects of monomer composition of urethane methacrylate based resins on the C= C degree of conversion, residual monomer content and mechanical properties, Polymers 2021, 13 (24), 4415
[3] Ilie, N.; Sarosi, C.; Rosu, M.C.; Moldovan, M. Synthesis and characterization of graphene oxide-zirconia (GO-ZrO2) and hydroxyapatite-zirconia (HA-ZrO2) nano-fillers for resin-based composites for load-bearing applications, Journal of Dentistry 2021, 105, 103557
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