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Dental Implant Materials and Biomaterials
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Dental Implant Materials and Biomaterials

A special issue of Journal of Functional Biomaterials (ISSN 2079-4983).

Deadline for manuscript submissions: closed (30 June 2018) | Viewed by 22931

Special Issue Editors

Prof. Dr. Giorgio Pompa

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Guest Editor
Department of Oral and Maxillofacial Sciences, “Sapienza” University of Rome, Rome, Italy
Dr. Piero Papi

E-Mail Website
Guest Editor
Department of Oral and Maxillofacial Sciences, “Sapienza” University of Rome, Rome, Italy
Interests: peri-implantitis; biomaterials; antimicrobial surface decontamination, dental implants; biofilm; implant decontamination; antimicrobial mouthwash
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over the years, numerous implant surfaces and coatings have been used to try to maximize on-growth potential and secondary stability, increasing bone-to-implant contact (BIC) values. Improving surface roughness promotes the adherence of platelets, from the initial clot that releases platelet-derived growth factors, which are chemotactic and mitogenic for mesenchymal cells and osteoblast progenitor cells.

Microtextured, acid-etched, sandblasted/ acid-etched, phosphate enriched, nanotexturized or coated with hydroxyapatite (HA) or titanium plasma-sprayed implant surfaces have been used all over the years.

Recently, new titanium alloys have been introduced in dental implant market: A new titanium-zirconium alloy improve mechanical strength and, therefore, allow use of narrow-diameter implants.

A novel trabecular metal material, made by a combination of tantalium and titanium, has been used to maximize BIC values, allowing the growth of trabecular bone in its interconnected pores.

The aims of this Special Issue, focused on dental implant materials and biomaterials, is to present current knowledge and future perspectives of research in this field through original research articles and systematic reviews.

Prof. Dr. Giorgio Pompa
Dr. Piero Papi
Guest Editors

Keywords

  • Dental implants
  • Biomaterials
  • Bone tissue engineering
  • Narrow diameter implants
  • Implant surface
  • Implant-abutment interface
  • Titanium-zirconium
  • Trabecular metal

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Published Papers (3 papers)

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Research

11 pages, 2088 KiB  
Article
Histologic and Histomorphometric Analysis of Bone Regeneration with Bovine Grafting Material after 24 Months of Healing. A Case Report
by Renzo Guarnieri, Fabrizio Belleggia, Patricia DeVillier and Luca Testarelli
J. Funct. Biomater. 2018, 9(3), 48; https://doi.org/10.3390/jfb9030048 - 8 Aug 2018
Cited by 15 | Viewed by 6567
Abstract
Anorganic bovine bone mineral matrix (ABBMM) has been reported to have osteoconductive properties and no inflammatory or adverse responses when used as grafting material in sinus augmentation procedures. However, controversy remains in regard to degradation rate of ABBMM. The aim of this study [...] Read more.
Anorganic bovine bone mineral matrix (ABBMM) has been reported to have osteoconductive properties and no inflammatory or adverse responses when used as grafting material in sinus augmentation procedures. However, controversy remains in regard to degradation rate of ABBMM. The aim of this study was to histologically and histomorphometrically evaluate the degradation of ABBMM in human bone samples obtained in one patient 24 months after sinus augmentation. Materials and Methods: The histologic and histomorphometric analysis was performed by means of light microscopy in three specimens harvested from the same patient, Results: After 24 months the tissue pattern appeared to be composed of residual particles, some in close contact with the newly formed bone, others separated by translucent areas and osteoid tissues. Newly-formed bone presented different levels of maturation and numerous osteocytes, with greater numbers in bone closer to the grafted particles (27.3% vs. 11.2%, p < 0.05). The histomorphometric analysis showed mean values of 40.84% newly-formed bone, 33.58% residual graft material, 23.84% marrow spaces, and 1.69% osteoid tissue, Conclusions: Even though ABBMM underwent considerable resorption, a great amount of residual grafting material was still present after two years of healing following sinus augmentation. This study confirms that the bovine grafts can be classified as long-term degradation materials. Full article
(This article belongs to the Special Issue Dental Implant Materials and Biomaterials)
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14 pages, 21693 KiB  
Article
Novel Chlorhexidine-Loaded Polymeric Nanoparticles for Root Canal Treatment
by Gina Quiram, Francisco Montagner, Kelli L. Palmer, Mihaela C. Stefan, Katherine E. Washington and Danieli C. Rodrigues
J. Funct. Biomater. 2018, 9(2), 29; https://doi.org/10.3390/jfb9020029 - 17 Apr 2018
Cited by 13 | Viewed by 8011
Abstract
Persistence of microorganisms in dentinal tubules after root canal chemo-mechanical preparation has been well documented. The complex anatomy of the root canal and dentinal buffering ability make delivery of antimicrobial agents difficult. This work explores the use of a novel trilayered nanoparticle (TNP) [...] Read more.
Persistence of microorganisms in dentinal tubules after root canal chemo-mechanical preparation has been well documented. The complex anatomy of the root canal and dentinal buffering ability make delivery of antimicrobial agents difficult. This work explores the use of a novel trilayered nanoparticle (TNP) drug delivery system that encapsulates chlorhexidine digluconate, which is aimed at improving the disinfection of the root canal system. Chlorhexidine digluconate was encapsulated inside polymeric self-assembled TNPs. These were self-assembled through water-in-oil emulsion from poly(ethylene glycol)-b-poly(lactic acid) (PEG-b-PLA), a di-block copolymer, with one hydrophilic segment and another hydrophobic. The resulting TNPs were physicochemically characterized and their antimicrobial effectiveness was evaluated against Enterococcus faecalis using a broth inhibition method. The hydrophilic interior of the TNPs successfully entrapped chlorhexidine digluconate. The resulting TNPs had particle size ranging from 140–295 nm, with adequate encapsulation efficiency, and maintained inhibition of bacteria over 21 days. The delivery of antibacterial irrigants throughout the dentinal matrix by employing the TNP system described in this work may be an effective alternative to improve root canal disinfection. Full article
(This article belongs to the Special Issue Dental Implant Materials and Biomaterials)
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19 pages, 3066 KiB  
Article
Antimicrobial Monomers for Polymeric Dental Restoratives: Cytotoxicity and Physicochemical Properties
by Diane R. Bienek, Stanislav A. Frukhtbeyn, Anthony A. Giuseppetti, Ugochukwu C. Okeke and Drago Skrtic
J. Funct. Biomater. 2018, 9(1), 20; https://doi.org/10.3390/jfb9010020 - 27 Feb 2018
Cited by 6 | Viewed by 7627
Abstract
A trend for the next generation of polymeric dental restoratives is to incorporate multifunctional capabilities to regulate microbial growth and remineralize tooth surfaces. Polymerizable 2-(methacryloyloxy)-N-(2-(methacryloyloxy)ethyl)-N,N-dimethylethan-1-aminium bromide (IDMA1) and N,N′-([1,1′-biphenyl]-2,2′-diylbis(methylene))bis(2-(methacryloyloxy)-N,N-dimethylethan-1-aminium) bromide [...] Read more.
A trend for the next generation of polymeric dental restoratives is to incorporate multifunctional capabilities to regulate microbial growth and remineralize tooth surfaces. Polymerizable 2-(methacryloyloxy)-N-(2-(methacryloyloxy)ethyl)-N,N-dimethylethan-1-aminium bromide (IDMA1) and N,N′-([1,1′-biphenyl]-2,2′-diylbis(methylene))bis(2-(methacryloyloxy)-N,N-dimethylethan-1-aminium) bromide (IDMA2), intended for utilization in bi-functional antimicrobial and remineralizing composites, were synthesized, purified with an ethanol-diethyl ether-hexane solvent system, and validated by nuclear magnetic resonance (1H and 13C NMR) spectroscopy, mass spectrometry, and Fourier-transform infrared spectroscopy. When incorporated into light-curable urethane dimethacrylate (UDMA)/polyethylene glycol-extended UDMA (PEG-U)/ethyl 2-(hydroxymethyl)acrylate (EHMA) (assigned UPE) resins, IDMAs did not affect the overall resins’ hydrophilicity/hydrophobicity balance (water contact angle: 60.8–65.5°). The attained degrees of vinyl conversion (DVC) were consistently higher in both IDMA-containing copolymers and their amorphous calcium phosphate (ACP) composites (up to 5% and 20%, respectively) reaching 92.5% in IDMA2 formulations. Notably, these high DVCs values were attained without an excessive increase in polymerization stress. The observed reduction in biaxial flexure strength of UPE-IDMA ACP composites should not prevent further evaluation of these materials as multifunctional Class V restoratives. In direct contact with human gingival fibroblasts, at biologically relevant concentrations, IDMAs did not adversely affect cell viability or their metabolic activity. Ion release from the composites was indicative of their strong remineralization potential. The above, early-phase biocompatibility and physicochemical tests justify further evaluation of these experimental materials to identify formulation(s) suitable for clinical testing. Successful completion is expected to yield a new class of restoratives with well-controlled bio-function, which will physicochemically, mechanically, and biologically outperform the conventional Class V restoratives. Full article
(This article belongs to the Special Issue Dental Implant Materials and Biomaterials)
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