ABSTRACT
Nanotechnology is revolutionizing prosthodontics by enhancing the aesthetics, durability, and functionality of dental restorations. Nanomaterials can mimic the natural appearance of teeth with unprecedented precision, resulting in lifelike and visually appealing prosthetics. Their superior strength and wear resistance extend the longevity of restorations, reducing the need for replacements and lowering costs. Beyond aesthetics and durability, nanomaterials can be engineered with unique properties, such as antibacterial effects and the ability to deliver therapeutic agents, improving oral health and patient comfort. This review explores the current applications and future opportunities of nanotechnology in prosthodontics, offering valuable insights for dental professionals and researchers interested in its transformative potential.
KEYWORDS: Aesthetics and durability, antibacterial properties, dental restorations, nanomaterials, nanotechnology in prosthodontics
INTRODUCTION AND BACKGROUND
For decades, achieving a natural-looking, durable, and functional smile has been a cornerstone of prosthodontics. However, conventional dental materials often fall short, struggling to simultaneously deliver on aesthetics, durability, and functionality. Traditional materials may lack the nuanced aesthetics required to replicate the intricate details of natural teeth or fail to provide the strength needed for everyday use, leading to compromised aesthetics, reduced lifespan of restorations, and patient dissatisfaction.[1] Nanotechnology offers a promising solution by manipulating matter at the nanoscale, enabling the development of materials with unique properties that revolutionize prosthodontics.[2] Nanomaterials like nanoparticles, nanocomposites, and nanostructured materials possess distinctive characteristics due to their size and composition, which influence their physicochemical properties and effectiveness in dental treatments.[3] For instance, nanocomposites enhance durability, germ resistance, and aesthetic appeal, while nanoparticles can facilitate targeted drug delivery. Understanding these advancements is crucial for dentists to select the most suitable nanomaterial for various dental applications.[4]
Nanomaterials in dentistry are available in diverse forms, such as powder, fiber, tube, membrane, and block. Zinc nanoparticles exhibit potent bactericidal effects through zinc ion release, photocatalytic activity, and stability.[5] Silver nanoparticles, known for their antibacterial properties, disrupt cell walls and hinder DNA synthesis, making them efficient for dental materials.[6] Similarly, TiO2 nanoparticles increase membrane fluidity, leading to cell wall disintegration and effective antifungal action. Organic nanoparticles like chitosan and poly (lactic-co-glycolic acid) offer antimicrobial properties, while other materials like CuO, MgO, and CaO exhibit antibacterial and antifungal effects. These advancements are transforming prosthodontics by enhancing the aesthetics, durability, and functionality of dental restorations. Nanotechnology enables the creation of materials that precisely mimic natural teeth, significantly improving mechanical strength, wear resistance, and antibacterial qualities, thereby offering a groundbreaking solution to the limitations of traditional dental materials.[6]
METHODOLOGY
Search criteria
To explore nanomaterials in prosthodontics comprehensively, a detailed search was conducted using PubMed and Google Scholar. The strategy combined Medical Subject Headings (MeSH) terms and keywords like “nanomaterials,” “dentistry,” “nanotechnology,” and “prosthodontics” using Boolean operators “AND” and “OR” to find relevant articles from 2018 to 2024. Inclusion criteria focused on articles published within this timeframe by established researchers, with titles reflecting the topic, research goals aligned with the subject, and written in English. Excluded were conference proceedings, non-original research, studies unrelated to dentistry or medicine, and overly detailed articles. This careful selection ensured the inclusion of high-quality, pertinent research for this review.
REVIEW
Nanotechnology has significantly advanced prosthodontics by enhancing the properties of traditional materials like ceramics, resins, polymers, and metals, addressing longstanding challenges. In prosthodontic treatments, which include both removable and fixed prostheses, nanotechnology has improved the dimensional stability, tensile strength, antimicrobial properties, and overall longevity of materials such as PMMA polymers and silicone elastomers used in dentures and maxillofacial prostheses.[1,2] Fixed prostheses, supported by natural teeth or implants, benefit from advanced materials like nanocomposites and nanocoatings, which enhance mechanical strength and tissue regeneration. For instance, materials like carbon nanotubes and silica-based nanoparticles contribute to these improvements, marking a significant advancement in prosthodontic care.[3]
In the context of edentulism, nanomaterials like TiO2 and zirconia (Y-TZP) have shown promise in enhancing prosthetic materials’ properties. TiO2 nanotubes in PMMA nanocomposites offer antibacterial effects, especially against Candida species, while modifications in Y-TZP can address microstructure-related defects that compromise clinical reliability.[4] Nano-engineered dental implants feature nanoscale surfaces that improve integration, cell bioactivity, and antibacterial effects, leading to better osseointegration and reduced peri-implant contamination. Techniques like electrochemical anodization and plasma treatment are used to create these beneficial surface modifications, enhancing bioactivity and promoting localized therapeutic release [Figure 1].[5]
Figure 1.
Overview of nanotechnology in prosthodontics
Nanotechnology in prosthodontics also focuses on developing antimicrobial agents and surface treatments to prevent infections and improve implant success rates. Coatings using silver, zinc oxide, and cerium oxide nanoparticles provide antibacterial and anti-inflammatory properties, while approaches like electrospun silk fibroin membranes offer potential in periodontal and bone regeneration.[6] The incorporation of nanomaterials into dental restorations holds the potential for creating biomimetic materials that replicate the aesthetics and biological functions of natural teeth. Future advancements may lead to self-healing restorations and personalized dentistry solutions tailored to individual needs and incorporating therapeutic agents. However, challenges such as ensuring long-term safety, regulatory standards, and cost considerations remain.[7]
Applications and benefits
Nanotechnology in prosthodontics extends to innovative applications such as enhancing denture base resins and coatings on dental implants. By integrating nanoparticles like silver (AgNPs), titanium dioxide (TiO2NPs), zinc oxide (ZnONPs), and zirconium dioxide (ZrO2NPs) into denture materials, researchers have achieved increased resistance to microbial and fungal adhesion, crucial for preventing infections in vulnerable populations like geriatric patients. While silver nanoparticles can lead to resin discoloration, their strong antimicrobial effects make them valuable for maintaining oral health. Similarly, innovative coatings on titanium implants, such as silver-loaded polydopamine, have shown significant antibacterial activity, effectively reducing microbial colonies and prolonging the lifespan of dental implants by minimizing peri-implantitis risks.[1,2]
Nanotechnology in tissue engineering
In addition to enhancing dental materials, nanotechnology plays a pivotal role in tissue engineering and regenerative dentistry. Gold nanoparticles (AuNPs), for instance, have been used to improve the osteogenic capabilities of human dental pulp stem cells, promoting bone growth and regeneration. This is achieved by facilitating better cell adhesion, proliferation, and differentiation on biomaterials like calcium phosphate cement. Such advancements highlight the potential of nanomaterials in developing regenerative therapies that not only restore oral function but also contribute to the natural healing processes within the oral cavity. The integration of nanotechnology in stem cell research and tissue engineering could revolutionize the way prosthodontics addresses complex oral health challenges.[3,4]
Future directions and challenges
Looking ahead, the future of nanotechnology in prosthodontics is filled with exciting possibilities, including the development of biomimetic materials that closely replicate natural tooth structures. These materials aim to offer not only improved aesthetics and mechanical properties but also the ability to promote tooth remineralization and biocompatibility with surrounding tissues. The concept of self-healing dental materials is also under exploration, potentially allowing restorations to repair minor damages autonomously. However, achieving these goals requires addressing challenges such as ensuring the long-term biocompatibility and safety of nanomaterials, navigating evolving regulatory standards, and managing the higher costs associated with these advanced materials. Continued interdisciplinary research and collaboration will be essential to overcoming these obstacles and fully realizing the transformative potential of nanotechnology in prosthodontics.[5,6,7]
CONCLUSION
Nanotechnology is transforming prosthodontics by offering solutions to longstanding challenges in dental restorations. By enhancing the mechanical, aesthetic, and antimicrobial properties of materials, nanotechnology is paving the way for more durable, natural-looking, and potentially therapeutic dental solutions. While promising, these advancements require addressing challenges related to safety, regulation, and cost to fully realize their potential in clinical practice. Continued research and development in nanotechnology hold the promise of a future marked by innovative and personalized dental care.
Conflicts of interest
There are no conflicts of interest.
Funding Statement
Nil.
REFERENCES
- 1.Buniyamin I, Akhir RM, Asli NA, Khusaimi Z, Malek MF, Mahmood MR. Nanotechnology applications in biomedical systems. Curr Nanomater. 2022;7:167–80. [Google Scholar]
- 2.Vasiliu S, Racovita S, Gugoasa IA, Lungan MA, Popa M, Desbrieres J. The benefits of smart nanoparticles in dental applications. Int J Mol Sci. 2021;22:2585. doi: 10.3390/ijms22052585. doi: 10.3390/ijms22052585. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 3.Foong LK, Foroughi MM, Mirhosseini AF, Safaei M, Jahani S, Mostafavi M, et al. Applications of nano-materials in diverse dentistry regimes. RSC Adv. 2020;10:15430–60. doi: 10.1039/d0ra00762e. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 4.Malik S, Waheed Y. Emerging applications of nanotechnology in dentistry. Dent J (Basel) 2023;11:266. doi: 10.3390/dj11110266. doi: 10.3390/dj11110266. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 5.Kochan O, Boitsaniuk S, Levkiv M, Przystupa K, Manashchuk N, Pohoretska K, et al. Emergence of nano-dentistry as a reality of contemporary dentistry. Appl Sci. 2022;12:2008. doi: 10.3390/app12042008. [Google Scholar]
- 6.Sreenivasalu PKP, Dora CP, Swami R, Jasthi VC, Shiroorkar PN, Nagaraja S, Asdaq SMB, Anwer MK. Nanomaterials in dentistry: Current applications and future scope. Nanomaterials. 2022;12:1676. doi: 10.3390/nano12101676. doi: 10.3390/nano12101676. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 7.Chidembaranathan AS. Importance and Applications of Nanotechnology. Chapter 1. Vol. 6. Meddocs publishers; Nanotechnology-A boon to prosthodontics; pp. 1–9. [Google Scholar]