1
|
Almutairi N, Alhussein A, Alenizy M, Ba-Armah I, Sun J, Weir MD, Xu HHK. Novel Resin-Based Antibacterial Root Surface Coating Material to Combat Dental Caries. J Funct Biomater 2024; 15:168. [PMID: 38921541 PMCID: PMC11204561 DOI: 10.3390/jfb15060168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/12/2024] [Accepted: 06/17/2024] [Indexed: 06/27/2024] Open
Abstract
Root caries caused by cariogenic bacteria are a burden on a large number of individuals worldwide, especially the elderly. Applying a protective coating to exposed root surfaces has the potential to inhibit the development of caries, thus preserving natural teeth. This study aimed to develop a novel antibacterial coating to combat root caries and evaluate its effectiveness using the antibacterial monomer dimethylaminohexadecyl methacrylate (DMAHDM). DMAHDM was synthesized and incorporated into a resin consisting of 55.8% urethane dimethacrylate (UDMA) and 44.2% TEG-DVBE (UV) at a 10% mass fraction of glass filler. Multiple concentrations of DMAHDM were tested for their impact on the resin's mechanical and physical properties. S. mutans biofilms grown on resin disks were analyzed for antibacterial efficacy. Cytotoxicity was assessed against human gingival fibroblasts (HGFs). The results showed an 8-log reduction in colony-forming units (CFUs) against S. mutans biofilm (mean ± sd; n = 6) (p < 0.05) when 5% DMAHDM was incorporated into the UV resin. There was a 90% reduction in metabolic activity and lactic acid production. A low level of cytotoxicity against HGF was observed without compromising the physical and mechanical properties of the resin. This coating material demonstrated promising physical properties, potent antibacterial effects, and low toxicity, suggesting its potential to protect exposed roots from caries in various dental procedures and among elderly individuals with gingival recession.
Collapse
Affiliation(s)
- Nader Almutairi
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (N.A.)
- Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Alkharj 16245, Saudi Arabia
| | - Abdullah Alhussein
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia;
| | - Mohammad Alenizy
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (N.A.)
- Department of Restorative Dental Sciences, University of Hail, Hail 55475, Saudi Arabia
| | - Ibrahim Ba-Armah
- PhD Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (N.A.)
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Jirun Sun
- The ADA Forsyth Institute, Cambridge, MA 02142, USA
| | - Michael D. Weir
- Department of Biomaterials and Regenerative Dental Medicine, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Hockin H. K. Xu
- Department of Biomaterials and Regenerative Dental Medicine, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
- Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| |
Collapse
|
2
|
Yazdani N, Ashrafi H, Özcan M, Nekoueimehr N, Kholdi M, Farzad A. Mechanical and Thermal Stress Analysis of Cervical Resin Composite Restorations Containing Different Ratios of Zinc Oxide Nanoparticles: A 3D Finite Element Study. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5504. [PMID: 36013640 PMCID: PMC9412397 DOI: 10.3390/ma15165504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 08/05/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Due to an increase in prevalence of cervical lesions, it is important to use appropriate restorative materials to reduce the incidence of secondary lesions. Owing to having antibacterial properties, cervical composite restorations containing different ratios of Zinc Oxide nanoparticles (ZnO NPs) have been analyzed using the Finite Element method to determine the optimal incorporation ratio from mechanical and thermal perspectives. A numerical simulation is conducted for a mandibular first premolar with a cervical lesion (1.5 × 2 × 3 mm3) restored with composites containing 0 to 5% wt. ZnO NPs. Subsequently, the samples are exposed to different thermo-mechanical boundary conditions, and stress distributions at different margins are examined. The accumulated stress in the restoration part increases for the 1% wt. sample, whereas the higher percentage of ZnO NPs leads to the reduction of stress values. In terms of different loading conditions, the least and most stress values in the restoration part are observed in central loading and lingually oblique force, respectively. The change in the surface temperature is inversely correlated with the ratio of ZnO NPs. In conclusion, the composite containing 5% wt. ZnO NPs showed the most proper thermo-mechanical behavior among all samples.
Collapse
Affiliation(s)
- Negar Yazdani
- Faculty of Dentistry, Kashan University of Medical Sciences, Kashan 8715988141, Iran
| | - Hossein Ashrafi
- Department of Applied Design, Faculty of Mechanical Engineering, University of Kashan, Kashan 8731753153, Iran
| | - Mutlu Özcan
- Division of Dental Biomaterials, Clinic for Reconstructive Dentistry, University of Zürich, CH-8032 Zürich, Switzerland
| | - Negin Nekoueimehr
- Faculty of Dentistry, Kashan University of Medical Sciences, Kashan 8715988141, Iran
| | - Mohsen Kholdi
- Department of Solid Mechanic, Faculty of Mechanical Engineering, University of Kashan, Kashan 8731753153, Iran
| | - Azin Farzad
- Faculty of Dentistry, Kashan University of Medical Sciences, Kashan 8715988141, Iran
| |
Collapse
|
3
|
Kamenskikh AA, Sakhabutdinova L, Astashina N, Petrachev A, Nosov Y. Numerical Modeling of a New Type of Prosthetic Restoration for Non-Carious Cervical Lesions. MATERIALS 2022; 15:ma15155102. [PMID: 35897535 PMCID: PMC9330095 DOI: 10.3390/ma15155102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/14/2022] [Accepted: 07/19/2022] [Indexed: 11/29/2022]
Abstract
The paper considers a new technology for the treatment of non-carious cervical lesions (NCCLs). The three parameterized numerical models of teeth are constructed: without defect, with a V-shaped defect, and after treatment. A new treatment for NCCL has been proposed. Tooth tissues near the NCCLs are subject to degradation. The main idea of the technology is to increase the cavity for the restoration of NCCLs with removal of the affected tissues. The new treatment method also allows the creation of a playground for attaching the gingival margin. The impact of three biomaterials as restorations is studied: CEREC Blocs; Herculite XRV; and Charisma. The models are deformed by a vertical load from the antagonist tooth from 100 to 1000 N. The tooth-inlay system is considered, taking into account the contact interaction. Qualitative patterns of tooth deformation before and after restoration were established for three variants of the inlay material.
Collapse
Affiliation(s)
- Anna A. Kamenskikh
- Department of Computational Mathematics, Mechanics and Biomechanics, Perm National Research Polytechnic University, 614990 Perm, Russia; (L.S.); (Y.N.)
- Correspondence: ; Tel.: +7-(342)-239-15-64
| | - Lyaysan Sakhabutdinova
- Department of Computational Mathematics, Mechanics and Biomechanics, Perm National Research Polytechnic University, 614990 Perm, Russia; (L.S.); (Y.N.)
| | - Nataliya Astashina
- Department of Orthopedic Dentistry, Perm State Medical University Named after Academician E.A. Wagner, 26 Petropavlovskaya St., 614990 Perm, Russia; (N.A.); (A.P.)
| | - Artem Petrachev
- Department of Orthopedic Dentistry, Perm State Medical University Named after Academician E.A. Wagner, 26 Petropavlovskaya St., 614990 Perm, Russia; (N.A.); (A.P.)
| | - Yuriy Nosov
- Department of Computational Mathematics, Mechanics and Biomechanics, Perm National Research Polytechnic University, 614990 Perm, Russia; (L.S.); (Y.N.)
| |
Collapse
|
4
|
Szabó VT, Szabó B, Paczona B, Mészáros C, Braunitzer G, Balázs Szabó P, Garoushi S, Fráter M. The biomechanical effect of root amputation and degree of furcation involvement on intracoronally splinted upper molar teeth – An in vitro study. J Mech Behav Biomed Mater 2022; 129:105143. [DOI: 10.1016/j.jmbbm.2022.105143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/18/2022] [Accepted: 02/23/2022] [Indexed: 10/18/2022]
|