1
|
Farrag OGAEG, Shamaa NEDA, Elgameay WE, Bayoumi DA. Clinical effect of chlorhexidine and sodium fluoride on corrosion behavior and surface topography of nitinol orthodontic archwires. BMC Oral Health 2024; 24:564. [PMID: 38745154 PMCID: PMC11092164 DOI: 10.1186/s12903-024-04289-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 04/22/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Alterations in the mechanical properties of the materials utilized in orthodontic appliances could affect the working properties of the appliances, thereby affecting clinical progress and outcome. Numerous studies have confirmed the correlation between alloy corrosion and raised surface roughness, which has a direct impact on the working characteristics of orthodontic archwires. METHODS Thirty nickel-titanium (NiTi) orthodontic archwires were utilized in this study. Patients were randomly selected and allocated into three groups according to the randomization plan; (The control group): subjects practiced regular oral hygiene; (The fluoride group): subjects used fluoride for intensive prophylaxis; (The chlorhexidine group): subjects used chlorhexidine. Representative samples were evaluated by SEM, and then SEM images with high resolution were examined using Image J software to determine the surface roughness and obtain the results for further statistical analysis. RESULTS Our findings indicated a significant difference was found between the three groups regarding the anterior and posterior parts between the control and the two other groups and a non-significant difference between NaF and CHX groups. Overall, the p-value for group comparisons was 0.000 for both parts, indicating a highly significant difference especially between the control and NaF groups. CONCLUSION Mouthwashes containing sodium fluoride demonstrated more significant surface alterations than the control and CHX groups and should be prescribed in accordance with orthodontic materials to reduce side effects.
Collapse
Affiliation(s)
- Osama Gamil Abd El Gawad Farrag
- Department of Orthodontic, Faculty of Dentistry, Suez Canal University, Ismaillia, Egypt.
- Department of Orthodontic, Faculty of Dentistry, Sinai University, Qantara Branch, Ismailia, Egypt.
| | | | - Walaa Elsayed Elgameay
- Department of Orthodontic, Faculty of Dentistry, Suez Canal University, Ismaillia, Egypt
| | - Dalia A Bayoumi
- Department of Dental Biomaterials, Faculty of Dentistry, Suez Canal University, Ismaillia, Egypt
| |
Collapse
|
2
|
Zibar Belasic T, Zigante M, Uhac M, Karlovic S, Badovinac IJ, Spalj S. Effect of use of antiseptics and fluorides during orthodontic treatment on working properties of NiTi archwires in levelling dental arches : A randomized controlled trial. J Orofac Orthop 2024; 85:63-72. [PMID: 37358625 DOI: 10.1007/s00056-023-00475-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 04/18/2023] [Indexed: 06/27/2023]
Abstract
PURPOSE The goal was to investigate whether the application of antiseptics and fluorides during orthodontic treatment affects the biomechanics of the levelling of dental arches by changing the working properties of nickel-titanium (NiTi) archwires. METHODS The sample consisted of 60 individuals aged 12-22 years (53% females). There were 20 individuals in each experimental group: (I) individuals conducted regular oral hygiene, (II) individuals used a high concentration of fluorides for intensive prophylaxis for the first month; and (III) individuals used chlorhexidine in the same manner. NiTi alloy archwires (dimensions 0.508 × 0.508 mm) were analyzed 3 months after intraoral exposure and compared to as-received NiTi wires. Elastic modulus, yield strength, springback ratio, and modulus of resilience were calculated. Dimensions of the dental arches were analyzed when NiTi alloy (T1) was placed intraorally and after 3 months (T2). Change was quantified as the difference in dimensions (T2-T1). Anterior width-to-length ratio was used as a measure for dental arch shape. RESULTS Intraoral exposure reduced elastic modulus, yield strength, springback ratio, modulus of resilience, loading, and unloading forces of NiTi wires (p ≤ 0.021). Chlorhexidine mouthwash and gel with high concentration of fluorides did not change these properties more than saliva with regular hygiene. The amount of change of dental arch shape in the maxilla and mandible did not differ significantly between the experimental groups. CONCLUSION Using antiseptics or a high concentration of fluorides during orthodontic treatment does not significantly affect the mechanical properties of NiTi wires and would not have clinical implications in changing orthodontic biomechanics.
Collapse
Affiliation(s)
- Tihana Zibar Belasic
- Department of Medical, Surgical and Health Sciences, University of Trieste, Piazza dell'Ospitale 1, Trieste, Italy
| | - Martina Zigante
- Department of Orthodontics, Faculty of Dental Medicine, University of Rijeka, Kresimirova 40, 51000, Rijeka, Croatia
- Department of Orthodontics, Dental Clinic, Clinical Hospital Center Rijeka, Rijeka, Croatia
| | - Mia Uhac
- Department of Orthodontics, Faculty of Dental Medicine, University of Rijeka, Kresimirova 40, 51000, Rijeka, Croatia
- Department of Orthodontics, Dental Clinic, University Clinical Center Ljubljana, Ljubljana, Slovenia
| | - Sven Karlovic
- Laboratory for Unit Operations, Department of Process Engineering, Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
| | - Ivana Jelovica Badovinac
- Faculty of Physics and Centre for Micro- and Nanosciences and Technologies, University of Rijeka, Rijeka, Croatia
| | - Stjepan Spalj
- Department of Orthodontics, Faculty of Dental Medicine, University of Rijeka, Kresimirova 40, 51000, Rijeka, Croatia.
- Department of Orthodontics, Dental Clinic, Clinical Hospital Center Rijeka, Rijeka, Croatia.
- Department of Dental Medicine, Faculty of Dental Medicine and Health, J. J. Strossmayer University of Osijek, Osijek, Croatia.
| |
Collapse
|
3
|
Turkina AY, Makeeva IM, Dubinin ON, Bondareva JV, Chernodoubov DA, Shibalova AA, Arzukanyan AV, Antoshin AA, Timashev PS, Evlashin SA. The Impact of Commercially Available Dry Mouth Products on the Corrosion Resistance of Common Dental Alloys. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16114195. [PMID: 37297329 DOI: 10.3390/ma16114195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/25/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
Dental implants are thought to be implanted for life, but throughout their lifespan, they function in aggressive oral environment, resulting in corrosion of the material itself as well as possible inflammation of adjacent tissues. Therefore, materials and oral products for people with metallic intraoral appliances must be chosen carefully. The purpose of this study was to investigate the corrosion behavior of common titanium and cobalt-chromium alloys in interaction with various dry mouth products using electrochemical impedance spectroscopy (EIS). The study showed that different dry mouth products lead to different open circuit potentials, corrosion voltages, and currents. The corrosion potentials of Ti64 and CoCr ranged from -0.3 to 0 V and -0.67 to 0.7 V, respectively. In contrast to titanium, pitting corrosion was observed for the cobalt-chromium alloy, leading to the release of Co and Cr ions. Based on the results, it can be argued that the commercially available dry mouth remedies are more favorable for dental alloys in terms of corrosion compared to Fusayama Meyer's artificial saliva. Thus, to prevent undesirable interactions, the individual characteristics of not only the composition of each patient's tooth and jaw structure, but also the materials already used in their oral cavity and oral hygiene products, must be taken into account.
Collapse
Affiliation(s)
- Anna Yu Turkina
- Therapeutic Dentistry Department, Institute for Dentistry, I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str., 119991 Moscow, Russia
| | - Irina M Makeeva
- Therapeutic Dentistry Department, Institute for Dentistry, I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str., 119991 Moscow, Russia
| | - Oleg N Dubinin
- Center for Materials Technologies, Skolkovo Institute of Science and Technology, 30, Bld. 1 Bolshoy Boulevard, 121205 Moscow, Russia
- World-Class Research Center, Saint Petersburg State Marine Technical University, Lotsmanskaya Str. 3, 190121 Saint Petersburg, Russia
| | - Julia V Bondareva
- Center for Materials Technologies, Skolkovo Institute of Science and Technology, 30, Bld. 1 Bolshoy Boulevard, 121205 Moscow, Russia
| | | | - Anastasia A Shibalova
- Institute of Nanotechnology of Microelectronics of the Russian Academy of Sciences, Leninsky Prospect, 32A, 119991 Moscow, Russia
| | - Alina V Arzukanyan
- Therapeutic Dentistry Department, Institute for Dentistry, I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str., 119991 Moscow, Russia
| | - Artem A Antoshin
- Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str., 119991 Moscow, Russia
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str., 119991 Moscow, Russia
| | - Peter S Timashev
- Institute for Regenerative Medicine, I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str., 119991 Moscow, Russia
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str., 119991 Moscow, Russia
- Chemistry Department, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Stanislav A Evlashin
- Center for Materials Technologies, Skolkovo Institute of Science and Technology, 30, Bld. 1 Bolshoy Boulevard, 121205 Moscow, Russia
| |
Collapse
|
4
|
Radovic R, Begic G, Blagojevic SL, Karleusa L, Spalj S, Gobin I. Temporal dynamics of adhesion of oral bacteria to orthodontic appliances. Dent Mater J 2023:2022-235. [PMID: 37271541 DOI: 10.4012/dmj.2022-235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Adhesion of the most common dental biofilm bacteria to alloys used in orthodontics in relation to surface characteristics was analyzed. Streptococcus mutans (S. mutans), Streptococcus oralis (S. oralis), Veillonella parvula (V. parvula), and Aggregatibacter actinomycetemcomitans (A. actynomicetemcomitans) were incubated for 4 h with nickel-titanium (NiTi) and stainless-steel (SS) wires. The surface roughness and free energy of the alloys, as well as the hydrophobicity of the alloys and bacteria, were assessed. NiTi had higher surface free energy and rougher (p<0.001) and more hydrophilic surfaces than SS (p<0.001). The hydrophobic properties of the bacteria decreased in the following order: V. parvula>S. oralis>S. mutans>A. actynomicetemcomitans. Bacterial adhesion generally increased over time, though this pattern was influenced by the type of alloy and the bacteria present (p<0.001). In a multiple linear regression, the principal predictor of adhesion was bacterial hydrophobicity (p<0.001), followed by time (p<0.001); alloy surface characteristics had a low influence.
Collapse
Affiliation(s)
- Renea Radovic
- Department of Orthodontics, Faculty of Dental Medicine, University of Rijeka
| | - Gabrijela Begic
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka
| | - Sanja Lucic Blagojevic
- Department of Surface Engineering of Polymer Materials, Faculty of Chemical Engineering and Technology, University of Zagreb
| | - Ljerka Karleusa
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka
| | - Stjepan Spalj
- Department of Orthodontics, Faculty of Dental Medicine, University of Rijeka
- Department of Dental Medicine, Faculty of Dental Medicine and Health, J. J. Strossmayer University of Osijek
| | - Ivana Gobin
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka
| |
Collapse
|
5
|
Arakelyan M, Spagnuolo G, Iaculli F, Dikopova N, Antoshin A, Timashev P, Turkina A. Minimization of Adverse Effects Associated with Dental Alloys. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7476. [PMID: 36363067 PMCID: PMC9658402 DOI: 10.3390/ma15217476] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/17/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Metal alloys are one of the most popular materials used in current dental practice. In the oral cavity, metal structures are exposed to various mechanical and chemical factors. Consequently, metal ions are released into the oral fluid, which may negatively affect the surrounding tissues and even internal organs. Adverse effects associated with metallic oral appliances may have various local and systemic manifestations, such as mouth burning, potentially malignant oral lesions, and local or systemic hypersensitivity. However, clear diagnostic criteria and treatment guidelines for adverse effects associated with dental alloys have not been developed yet. The present comprehensive literature review aims (1) to summarize the current information related to possible side effects of metallic oral appliances; (2) to analyze the risk factors aggravating the negative effects of dental alloys; and (3) to develop recommendations for diagnosis, management, and prevention of pathological conditions associated with metallic oral appliances.
Collapse
Affiliation(s)
- Marianna Arakelyan
- Therapeutic Dentistry Department, Institute for Dentistry, Sechenov University, 119991 Moscow, Russia
| | - Gianrico Spagnuolo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80138 Napoli, Italy
| | - Flavia Iaculli
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80138 Napoli, Italy
| | - Natalya Dikopova
- Therapeutic Dentistry Department, Institute for Dentistry, Sechenov University, 119991 Moscow, Russia
| | - Artem Antoshin
- Institute for Regenerative Medicine, Sechenov University, 119991 Moscow, Russia
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov University, 119991 Moscow, Russia
| | - Peter Timashev
- Institute for Regenerative Medicine, Sechenov University, 119991 Moscow, Russia
- World-Class Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov University, 119991 Moscow, Russia
- Chemistry Department, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Anna Turkina
- Therapeutic Dentistry Department, Institute for Dentistry, Sechenov University, 119991 Moscow, Russia
| |
Collapse
|
6
|
Espinoza-Montero PJ, Montero-Jiménez M, Fernández L, Paz JL, Piñeiros JL, Ceballos SM. In vitro wearing away of orthodontic brackets and wires in different conditions: A review. Heliyon 2022; 8:e10560. [PMID: 36325428 PMCID: PMC9621092 DOI: 10.1016/j.heliyon.2022.e10560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/04/2021] [Accepted: 09/01/2022] [Indexed: 11/14/2022] Open
Abstract
Introduction The release of metallic ions from orthodontic
brackets and wires typically depends on their quality (chemical composition) and
the medium to which they are exposed, e.g., acidic, alkaline, substances with a
high fluoride concentration, etc. This review examines corrosion and wear of
orthodontic brackets, wires, and arches exposed to different media, including:
beverages (juices), mouthwashes and artificial saliva among others, and the
possible health effects resulting from the release of metallic ions under
various conditions. Objective This review aims to determine the exposure
conditions that cause the most wear on orthodontic devices, as well as the
possible health effects that can be caused by the release of metallic ions under
various conditions. Sources A search was carried out in the Scopus database,
for articles related to oral media that can corrode brackets and wires. The
initial research resulted in 8,127 documents, after applying inclusion and
exclusion criteria, 76 articles remained. Conclusion Stainless steel, which is commonly used in
orthodontic devices, is the material that suffers the most wear. It was also
found that acidic pH, alcohols, fluorides, and chlorides worsen orthodontic
material corrosion. Further, nickel released from brackets and wires can cause
allergic reactions and gingival overgrowth into patients.
Collapse
|
7
|
Abstract
Nickel–titanium orthodontic wires (NTWs) play an essential role in orthodontic treatment. However, their corrosion and aesthetic properties limit their applications. To improve the aesthetic effects of nickel–titanium orthodontic archwires, we prepared aluminium–silicon dioxide (Al–SiO2) as a biocompatible layer coated onto the NTWs. The Al–SiO2 coating was first fabricated using physical vapor deposition magnetron sputtering, and its physicochemical and biocompatibility properties were investigated. Al–SiO2 layers were well coated on the NTWs. The corrosion currents in the nickel–titanium (NiTi) control, Al–SiO2-coated NiTi experimental, stainless steel (SS) control and Al–SiO2-coated SS experimental groups were 23.72 μA cm−2, 1.21 μA cm−2, 0.22 μA cm−2 and 0.06 μA cm−2, respectively. Al–SiO2-coated NTWs with reduced corrosion current density indicated that the preparation of Al–SiO2 coating on the surface of NiTi and SS could reduce the tendency of electrochemical corrosion. The friction coefficients of orthodontic wires in the NiTi control, NiTi experimental, SS control, and SS experimental groups were 0.68, 0.46, 0.58 and 0.45, respectively. A low friction coefficient was observed in the Al–SiO2-coated NTWs, and the reduced friction coefficient improved the efficiency of orthodontics. Furthermore, the excellent biocompatibility of the NTWs and SS coated with Al–SiO2 indicates that Al–SiO2 as a novel aesthetic layer could improve the physicochemical properties of NTW and SS without causing cytotoxicity, which has considerable potential for modification of NTW and SS surfaces.
Collapse
|
8
|
Bacterial Exposure to Nickel: Influence on Adhesion and Biofilm Formation on Orthodontic Archwires and Sensitivity to Antimicrobial Agents. MATERIALS 2021; 14:ma14164603. [PMID: 34443123 PMCID: PMC8397954 DOI: 10.3390/ma14164603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 01/11/2023]
Abstract
The presence of nickel could modify bacterial behavior and susceptibility to antimicrobial agents. Adhesion and biofilm formation on orthodontic archwires can be a source of bacterial colonization and possible health hazards. Staphylococcus aureus was subjected to exposure and adaptation to various sub-inhibitory concentrations of nickel. Five strains of bacteria adapted to nickel in concentrations of 62.5-1000 μg/mL were tested for adhesion and biofilm formation on nickel-titanium archwires. Archwires were previously incubated in artificial saliva. Bacteria were incubated with orthodontic wire with stirring for 4 h (adhesion) and 24 h (biofilm formation). The number of adherent bacteria was determined after sonication and cultivation on the Muller-Hinton agar. Disk diffusion method was performed on all bacteria to assess the differences in antimicrobial susceptibility. Bacteria adapted to lower concentrations of nickel adhered better to nickel-titanium than strains adapted to higher concentrations of nickel (p < 0.05). Biofilm formation was highest in strains adapted to 250 and 500 μg/mL of nickel (p < 0.05). The highest biofilm biomass was measured for strains adapted to 250 μg/mL, followed by those adapted to 1000 μg/mL. Bacteria adapted to lower concentrations of nickel demonstrated lower inhibition zone diameters in the disk diffusion method (p < 0.05), indicating increased antimicrobial resistance. In conclusion, bacteria adapted to 250 μg/mL of nickel ions adhered better, demonstrated higher biofilm formation and often had higher antimicrobial resistance than other adapted and non-adapted strains.
Collapse
|
9
|
Belasic TZ, Pejova B, Curkovic HO, Kamenar E, Cetenovic B, Spalj S. Influence of intraoral application of antiseptics and fluorides during orthodontic treatment on corrosion and mechanical characteristics of nickel-titanium alloy in orthodontic appliances. Angle Orthod 2021; 91:528-537. [PMID: 33566077 DOI: 10.2319/052620-480.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 11/01/2020] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To explore whether the commercial agents recommended for controlling dental biofilm formation had a significant effect in vivo on mechanical and corrosion properties of nickel-titanium (NiTi) alloy. MATERIALS AND METHODS NiTi archwires (dimensions 0.508 × 0.508 mm) were collected from 36 orthodontic patients aged 13-42 years after a 3-month intraoral exposure. Three experimental groups were formed: (1) subjects conducting regular oral hygiene, (2) subjects who used fluorides for intensive prophylaxis for the first month, and (3) subjects who used chlorhexidine in the same manner. Corrosion behavior, surface characteristics, stiffness, hardness, and friction were analyzed. RESULTS Exposure to intraoral conditions significantly reduced the stiffness and hardness of the NiTi alloy (P ≤ .015). Fluoride tended to reduce stiffness and hardness more than did saliva or antiseptic, but not significantly. Roughness and friction were not significantly influenced by oral exposure. Intraoral aging predominantly produced general corrosion independent of the adjuvant prophylactic agent, although localized corrosion may also have occurred. CONCLUSIONS Fluorides and the antiseptic chlorhexidine do not increase corrosion more than saliva itself, nor do they further modify the mechanical properties of the NiTi alloy.
Collapse
|
10
|
Comparison of Cell Viability and Chemical Composition of Six Latest Generation Orthodontic Wires. Int J Biomater 2021; 2021:8885290. [PMID: 33574848 PMCID: PMC7861923 DOI: 10.1155/2021/8885290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/14/2020] [Accepted: 01/16/2021] [Indexed: 11/17/2022] Open
Abstract
Orthodontic wires are made of alloys containing different metals, including nickel. It is important to evaluate their biocompatibility prior to use, owing to their long-term use in patients. This in vitro study compared the cytotoxicity and chemical composition of six latest orthodontic wires: Fantasia®, Tanzo®, FLI®, NT3®, DuoForce®, and Gummetal®. The before-use group consisted of wires that were not used in the mouth, and the after-use group consisted of wires that were used in the mouth for two months. The wires were placed in contact with human gingival fibroblasts (HGF) for 72 h, and cytotoxicity was determined using the resazurin test. The chemical composition and surface characterisation were evaluated by spectrometry and scanning electron microscopy. The groups were compared using ANOVA and Kruskal–Wallis test. Only the FLI® wires produced a 36% reduction in HGF viability (p < 0.05) and presented greater irregularities and loss of polymer structure. After-use wires showed a significant reduction in the percentage of nickel and the appearance of new elements (oxygen and carbon). Therefore, it can be concluded that no toxic ion release was noticed in this study. Rhodium-coated wires were more stable than PTFE-coated wires, and only the FLI® wires showed a slight cytotoxic effect.
Collapse
|
11
|
Zhang C, He L, Chen Y, Dai D, Su Y, Shao L. Corrosion Behavior and In Vitro Cytotoxicity of Ni-Ti and Stainless Steel Arch Wires Exposed to Lysozyme, Ovalbumin, and Bovine Serum Albumin. ACS OMEGA 2020; 5:18995-19003. [PMID: 32775901 PMCID: PMC7408227 DOI: 10.1021/acsomega.0c02312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
In this study, the tendency and mechanisms by which protein and mechanical loads contribute to corrosion were determined by exposing Ni-Ti and stainless steel arch wires under varying mechanical loads to artificial saliva containing different types of protein (lysozyme, ovalbumin, and bovine serum albumin). The corrosion behavior and in vitro cytotoxicity results show that exposure to both protein and mechanical stress significantly decreased the corrosion resistance of stainless steel and increased the release of toxic corrosion products. Adding protein inhibited the corrosion of Ni-Ti, but the mechanical loads counteracted this effect. Even proteins containing the same types of amino acids had different effects on the corrosion resistance of the same alloy. The effect of protein or stress, or their combination, should be considered in the application of metal medical materials.
Collapse
Affiliation(s)
- Chao Zhang
- Stomatology
Center, Shunde Hospital, Southern Medical
University (The First People’s Hospital of Shunde), Foshan 528300, China
- Stomatological
Hospital, Southern Medical University, Guangzhou 510280, China
| | - Longwen He
- Stomatological
Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yuming Chen
- Stomatological
Hospital, Southern Medical University, Guangzhou 510280, China
| | - Danni Dai
- Stomatological
Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yuan Su
- Stomatology
Center, Shunde Hospital, Southern Medical
University (The First People’s Hospital of Shunde), Foshan 528300, China
- Stomatological
Hospital, Southern Medical University, Guangzhou 510280, China
| | - Longquan Shao
- Stomatological
Hospital, Southern Medical University, Guangzhou 510280, China
- Guangdong
Provincial Key Laboratory of Construction and Detection in Tissue
Engineering, Guangzhou 510515, China
| |
Collapse
|
12
|
Rincic Mlinaric M, Durgo K, Katic V, Spalj S. Cytotoxicity and oxidative stress induced by nickel and titanium ions from dental alloys on cells of gastrointestinal tract. Toxicol Appl Pharmacol 2019; 383:114784. [PMID: 31628918 DOI: 10.1016/j.taap.2019.114784] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 10/12/2019] [Accepted: 10/14/2019] [Indexed: 12/30/2022]
Abstract
The aim was to explore the biological effect of nickel (Ni) and titanium (Ti) ions released from dental alloys. NiTi alloy were exposed to 40 mL of artificial saliva (pH = 4.8, t = 37 °C). The dynamics of Ni and Ti ions release during corrosion were recorded on the 3th, 7th and 14th day. Biological effect of Ni and Ti ions released from alloy was explored on cell lines of human tongue CAL 27, liver Hep G2 and colon Caco-2. Neutral Red uptake assay for the estimation of cell viability/cytotoxicity and 2',7'-dichlorofluorescein diacetate fluorimetric assay for reactive oxygen species were used. Cells were exposed to the following concentration of corrosion products: 5.0×, 1.0×, 0.5 and 0.1× during the period of 24, 48 and 72 h. To check the effect of each metal separately, cells were exposed to nickel-chloride and titanium-dioxide of corresponding concentration. The release of Ni is higher than of Ti (15.1-30.4 μg/L for Ni and 9.0-17.3 μg/L for Ti, respectively) and 5× higher concentrations are needed to induce cytotoxic effect. Ni and Ti ions alone do not induce a major cytotoxic effect, but their combination does indicating their synergistic effect. Increase in concentration of Ni and Ti tends to increase cytotoxicity, Ti more than Ni. Cytotoxicity and induction of free radicals are in strong positive linear correlation. Ions released from NiTi alloy during 14 days do not induce significant cytotoxic effect and would not have a clinically important impact. Cytotoxic effect is largely the result of the induction of free radicals.
Collapse
Affiliation(s)
| | - K Durgo
- University of Zagreb, Faculty of Food Technology and Biotechnology, Croatia
| | - V Katic
- University of Rijeka, Faculty of Dental Medicine, Department of Orthodontics, Croatia
| | - S Spalj
- University of Rijeka, Faculty of Dental Medicine, Department of Orthodontics, Croatia; J. J. Strossmayer University of Osijek, Faculty of Dental Medicine and Health, Department of Dental Medicine, Croatia
| |
Collapse
|
13
|
Characterisation of NiTi Orthodontic Archwires Surface after the Simulation of Mechanical Loading in CACO2-2 Cell Culture. COATINGS 2019. [DOI: 10.3390/coatings9070440] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nickel-titanium (NiTi) orthodontic archwires are crucial in the initial stages of orthodontic therapy when the movement of teeth and deflection of the archwire are the largest. Their great mechanical properties come with their main disadvantage—the leakage of nickel. Various in vitro studies measured nickel leakage from archwires that were only immersed in the medium with little or minimal simulation of all stress and deflection forces that affect them. This study aims to overcome that by simulating deflection forces that those archwires are exposed to inside the mouth of a patient. NiTi orthodontic archwires were immersed in CACO2-2 cell culture medium and then immediately loaded while using a simulator of multiaxial stress for 24 h. After the experiment, the surface of the NiTi orthodontic archwires were analysed while using scanning electron microscopy (SEM) and auger electron spectroscopy (AES). The observations showed significant microstructural and compositional changes within the first 51 nm thickness of the archwire surface. Furthermore, the released nickel and titanium concentrations in the CACO2-2 cell culture medium were measured while using Inductively Coupled Plasma Mass Spectroscopy (ICP-MS). It was found out that the level of released nickel ions was 1.310 µg/L, which can be assigned as statistically significant results. These data represent the first mention of the already detectable release of Ni ions after 24 h during the simulation of mechanical loading in the CACO2-2 cell culture medium, which is important for clinical orthodontic praxis.
Collapse
|