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Gupta S, Ardeshna A, Rossouw PE, Valiathan M. Systemic Factors Affecting Orthodontic Treatment Outcomes and Prognosis - Part 1. Dent Clin North Am 2024; 68:693-706. [PMID: 39244251 DOI: 10.1016/j.cden.2024.05.004] [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] [Indexed: 09/09/2024]
Abstract
This article explores the intersection of various systemic conditions with orthodontic treatment. Renal diseases, including chronic kidney disease and renal transplant, present challenges such as delayed tooth eruption and gingival overgrowth, necessitating careful orthodontic planning and collaboration with physicians. Liver diseases, particularly hepatitis, heighten the risk of periodontal disease and mandate strict infection control measures during orthodontic procedures. Ehlers-Danlos syndrome poses challenges related to collagen fragility, rapid tooth movement, and orthodontic relapse. Autoimmune diseases like diabetes mellitus and juvenile idiopathic arthritis require tailored orthodontic approaches considering oral complications and joint involvement.
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Affiliation(s)
- Sumit Gupta
- Diplomate, American Board of Orofacial Pain, Private Practice, Rak Dental Care & Implant Centre, Ras Al Khaimah, United Arab Emirates.
| | - Anil Ardeshna
- Diplomate American Board of Orthodontics, Department of Orthodontics, Rutgers School of Dental medicine, 110 Bergen Street, Newark, NJ 07101, USA
| | - Paul Emile Rossouw
- Division of Orthodontics and Dentofacial Orthopedics, University of Rochester Eastman Institute of Oral Health, 625 Elmwood Avenue, Box 683, Rochester, NY 14620, USA
| | - Manish Valiathan
- Department of Orthodontics, Case Western Reserve University, 9601 Chester Avenue, Cleveland, OH 44106, USA
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2
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Di J, Song L, Chen T, Di Y, Guo Z, Chen S, Xiang C. Correlation between environmental nickel exposure and the development of arthritis: A large-sample cross-sectional investigation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116571. [PMID: 38850703 DOI: 10.1016/j.ecoenv.2024.116571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/29/2024] [Accepted: 06/05/2024] [Indexed: 06/10/2024]
Abstract
BACKGROUND Nickel is a common metallic element in orthopedic implanted devices and living environment exposures. It is associated with varieties of diseases. The purpose of this investigation was to explore the correlation between nickel exposure and the prevalence of arthritis. METHODS Data were obtained from the National Health and Nutrition Examination Survey (NHANES) database from 2017 to 2018. Multivariate logistic regression was utilized to analyze the relationship between urinary nickel levels and arthritis. In addition, hierarchical modeling further explored the interactions and trends between urinary nickel levels and arthritis. Propensity score matching (PSM) method was used to reduce the effect of confounders. Additionally, restricted cubic spline curve (RCS) was used to assess the possible nonlinear association between urinary nickel and arthritis. RESULTS The investigation was comprised of 139 arthritis patients and 547 healthy participants. After correction by PSM, there was a positive correlation between arthritis and Nickel exposure levels. The risk of developing arthritis was significantly increased when nickel exposure levels were in the Q4 interval (OR=2.25, 95 % CI=1.03-5.02). When stratified by age and sex, nickel exposure was significantly and positively associated with arthritis in the subgroup aged over 65 years. (OR=2.78,95 %CI=1.20-6.46). Also, the difference between nickel exposure and arthritis was significant in the different gender subgroups (interaction P<0.05). Restricted cubic spline (RCS) results showed a significant linear association between nickel exposure levels and arthritis. In addition, there was a non-linear association between nickel exposure and arthritis across gender and age subgroups. CONCLUSION A significant positive association between nickel exposure levels and arthritis was showed by the experimental data. Controlling the use of nickel-containing medical prostheses and reducing exposure to nickel-containing daily necessity could help to slow the onset of arthritis.
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Affiliation(s)
- Jingkai Di
- Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Liying Song
- The First Hospital of Shanxi Medical University, Taiyuan, China
| | - Tingting Chen
- The Fifth Hospital of Shanxi Medical University, Taiyuan, China
| | - Yijing Di
- The First Hospital of Shanxi Medical University, Taiyuan, China
| | - Zijian Guo
- Department of Orthopaedic Laboratory, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Shuai Chen
- Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Chuan Xiang
- Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan, China.
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3
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Noveir SD, Galamgam J, Cheng CE. Facial Dermatitis From Contact Allergy to Gold Permanent Retainer. Dermatitis 2024. [PMID: 38980749 DOI: 10.1089/derm.2024.0151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Affiliation(s)
- Sasan D Noveir
- From the David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, USA
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, USA
| | - Jayden Galamgam
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, USA
| | - Carol E Cheng
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, USA
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Di Spirito F, Amato A, Di Palo MP, Ferraro R, Cannatà D, Galdi M, Sacco E, Amato M. Oral and Extra-Oral Manifestations of Hypersensitivity Reactions in Orthodontics: A Comprehensive Review. J Funct Biomater 2024; 15:175. [PMID: 39057297 PMCID: PMC11278158 DOI: 10.3390/jfb15070175] [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: 06/04/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
Although rare, oral manifestations of hypersensitivity reactions in orthodontic patients pose a significant clinical challenge due to their heterogeneous presentations, and can cause discomfort and pain, possibly impacting patients' quality of life and orthodontic treatment duration and outcomes. This comprehensive review aimed to elucidate the oral, perioral, and systemic manifestations of hypersensitivity reactions in orthodontic subjects, focusing on patients with fixed appliances, removable appliances, and clear aligners, and detailing their epidemiology, macroscopic and microscopic features, allergy testing, clinical implications, and specific management strategies. Oral and extra-oral manifestations of (immediate and delayed) hypersensitivity reactions occur rarely and are due to the release of metal and non-metal ions from orthodontic appliances. They typically present as erythema, erosive-ulcerative lesions, and gingival hyperplasia, with histopathological findings showing inflammatory infiltrates. Nickel is a significant allergen, and diagnostic tests like patch tests are essential for managing these reactions. Likely due to prolonged contact with oral tissues, fixed orthodontic appliances pose a higher risk compared to removable appliances and clear aligners. Early identification and removal of allergenic materials, combined with effective treatments, can resolve symptoms and prevent recurrence. Keeping dental and medical records updated and knowing family and personal medical histories helps clinicians choose appropriate materials and counsel patients about potential risks. Proper patient education, regular monitoring, and using hypoallergenic materials are key strategies for managing these reactions.
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Affiliation(s)
- Federica Di Spirito
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA, Italy; (R.F.); (D.C.); (M.G.); (E.S.); (M.A.)
| | - Alessandra Amato
- Department of Neuroscience, Reproductive Science and Dentistry, University of Naples Federico II, 80131 Naples, NA, Italy;
| | - Maria Pia Di Palo
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA, Italy; (R.F.); (D.C.); (M.G.); (E.S.); (M.A.)
| | - Rahila Ferraro
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA, Italy; (R.F.); (D.C.); (M.G.); (E.S.); (M.A.)
| | - Davide Cannatà
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA, Italy; (R.F.); (D.C.); (M.G.); (E.S.); (M.A.)
| | - Marzio Galdi
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA, Italy; (R.F.); (D.C.); (M.G.); (E.S.); (M.A.)
| | - Elettra Sacco
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA, Italy; (R.F.); (D.C.); (M.G.); (E.S.); (M.A.)
| | - Massimo Amato
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA, Italy; (R.F.); (D.C.); (M.G.); (E.S.); (M.A.)
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Zhang R, Han B, Liu X. Functional Surface Coatings on Orthodontic Appliances: Reviews of Friction Reduction, Antibacterial Properties, and Corrosion Resistance. Int J Mol Sci 2023; 24:ijms24086919. [PMID: 37108082 PMCID: PMC10138808 DOI: 10.3390/ijms24086919] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/19/2023] [Accepted: 03/31/2023] [Indexed: 04/29/2023] Open
Abstract
Surface coating technology is an important way to improve the properties of orthodontic appliances, allowing for reduced friction, antibacterial properties, and enhanced corrosion resistance. It improves treatment efficiency, reduces side effects, and increases the safety and durability of orthodontic appliances. Existing functional coatings are prepared with suitable additional layers on the surface of the substrate to achieve the abovementioned modifications, and commonly used materials mainly include metal and metallic compound materials, carbon-based materials, polymers, and bioactive materials. In addition to single-use materials, metal-metal or metal-nonmetal materials can be combined. Methods of coating preparation include, but are not limited to, physical vapor deposition (PVD), chemical deposition, sol-gel dip coating, etc., with a variety of different conditions for preparing the coatings. In the reviewed studies, a wide variety of surface coatings were found to be effective. However, the present coating materials have not yet achieved a perfect combination of these three functions, and their safety and durability need further verification. This paper reviews and summarizes the effectiveness, advantages and disadvantages, and clinical perspectives of different coating materials for orthodontic appliances in terms of friction reduction, antibacterial properties, and enhanced corrosion resistance, and discusses more possibilities for follow-up studies as well as for clinical applications in detail.
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Affiliation(s)
- Ruichu Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing 100081, China
- National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory for Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Bing Han
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing 100081, China
- National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory for Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Xiaomo Liu
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing 100081, China
- National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory for Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing 100081, China
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6
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Skin irritation in children undergoing orthodontic facemask therapy. Sci Rep 2023; 13:2200. [PMID: 36750660 PMCID: PMC9905499 DOI: 10.1038/s41598-023-29253-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 02/01/2023] [Indexed: 02/09/2023] Open
Abstract
Orthodontic facemasks are extraoral orthodontic appliances that influence maxillary and mandibular development in children with skeletal Class III malocclusion. While a facemask is most effective in patients before the growth spurt, skin irritation is common during the treatment. Therefore, this retrospective study aimed to investigate the prevalence and pattern of such skin changes and identify their possible associated risk factors. We included 177 patients with skeletal Class III malocclusion who underwent facemask therapy. Patient age and sex, orthodontic parameters expressing the severity of malocclusion, the presence of complaints in the temporomandibular joint (TMJ) areas, and the level of patient cooperation were evaluated. Additionally, the severity and onset time of skin reactions were further analyzed. The results indicated that 43.5% of patients developed skin changes typical of irritant contact dermatitis. Skin irritation was significantly associated with the presence of TMJ complaints and female sex. Furthermore, skin irritation was more common in younger patients. Clinicians should pay special attention to the skin areas that come into contact with the appliance during each follow-up visit to detect potential problems. Moreover, patients and their parents should be given adequate information about the possibility, prevention, and management of skin problems during facemask therapy.
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Carrillo-Novia I, Lara-Carrillo E, Torres-Bugarin O, Morales-Valenzuela AA, Salmerón-Valdés EN, Hegazy-Hassan W, Velázquez-Enríquez U, Toral-Rizo VH. Use of liquid-based cytology samples reveals genomic instability and cell death in patients undergoing orthodontic treatment. J Oral Sci 2023; 65:24-28. [PMID: 36529513 DOI: 10.2334/josnusd.22-0235] [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: 12/23/2022]
Abstract
PURPOSE To examine the use of liquid-based exfoliative cytology to determine the presence of genomic instability and cell death in the oral mucosa of patients with orthodontic appliances. METHODS Fifty-four oral mucosa samples were collected from 18 patients and divided into three stages: T0, before fixation of orthodontic appliances; T1, 25 days after appliance fixation; T2, 90 days after appliance fixation. All samples were Papanicolaou-stained and observed by microscopy (1,000 cells/sample) to ascertain the frequency of micronucleated cells (MN) and nuclear abnormalities (nuclear buds (NB), binucleated (BN), condensed chromatin (CC), karyorrhexis (KR), and karyolysis (KL)). Differences were analyzed statistically using the Mann-Whitney, Wilcoxon, Kruskal-Wallis and chi-squared tests. RESULTS After placement of orthodontic appliances, significant differences were observed for genomic instability biomarkers (MN and NB) and cell death (CC, KR and KL) (P < 0.05). Female patients and older patients exhibited a higher frequency of MN. CONCLUSION Liquid-based cytology has revealed that orthodontic appliances induce genomic instability and cell death in epithelial tissue of the oral mucosa, facilitating sample preservation and yielding more than one preparation per sample. Future studies should investigate whether such cell damage can be reversed through cell repair or whether cell alterations evolve and lead to disease.
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Affiliation(s)
- Iris Carrillo-Novia
- Center for Advanced Studies and Research on Dentistry "Dr. Keisaburo Miyata", School of Dentistry, Autonomous University of the State of Mexico
| | - Edith Lara-Carrillo
- Center for Advanced Studies and Research on Dentistry "Dr. Keisaburo Miyata", School of Dentistry, Autonomous University of the State of Mexico
| | - Olivia Torres-Bugarin
- Genotoxic Evaluation Laboratory, Academic Unit of Health Sciences, Faculty of Medicine, Autonomous University of Guadalajara
| | - Adriana A Morales-Valenzuela
- Center for Advanced Studies and Research on Dentistry "Dr. Keisaburo Miyata", School of Dentistry, Autonomous University of the State of Mexico
| | - Elías N Salmerón-Valdés
- Center for Advanced Studies and Research on Dentistry "Dr. Keisaburo Miyata", School of Dentistry, Autonomous University of the State of Mexico
| | - Wael Hegazy-Hassan
- Center for Advanced Studies and Research on Dentistry "Dr. Keisaburo Miyata", School of Dentistry, Autonomous University of the State of Mexico
| | - Ulises Velázquez-Enríquez
- Center for Advanced Studies and Research on Dentistry "Dr. Keisaburo Miyata", School of Dentistry, Autonomous University of the State of Mexico
| | - Víctor H Toral-Rizo
- Center for Advanced Studies and Research on Dentistry "Dr. Keisaburo Miyata", School of Dentistry, Autonomous University of the State of Mexico
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8
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Metal Release and Surface Degradation of Fixed Orthodontic Appliances during the Dental Levelling and Aligning Phase: A 12-Week Study. COATINGS 2022. [DOI: 10.3390/coatings12050554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The purpose of the present study is twofold: (i) to assess the salivary nickel, chromium, and iron concentrations and (ii) to characterize the surface microstructure of the typical commercially available Ni-containing metallic appliances during the first 12-week orthodontic treatment period. A total of 85 unstimulated saliva samples were collected from patients before treatment, after 2 days, and after 1, 4, and 12 weeks. Salivary ion concentrations were determined by inductively coupled plasma optical emission spectroscopy, and data were analyzed with the Statistical Package for Social Sciences (IBM SPSS) software. The recorded mean metal concentrations were in the ranges of 132–175 µg/L for Ni, 171–192 µg/L for Cr, and 826–1023 µg/L for Fe. No statistically significant variations were observed between the different study times, and the null hypothesis (the concentrations of metallic ions in patients’ saliva did not significantly change after the placement of the orthodontic appliances) was accepted (p > 0.05). Mean salivary metallic ions were below toxic levels, and no adverse clinical reactions were registered. The intraoral surface degradation of the fixed components was corroborated by optical microscopy, scanning electron microscopy, and energy dispersive spectrometry. Microstructural analysis after complete orthodontic procedure confirmed different corrosion types, from pitting to biocorrosion.
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Narayanan P, Thiruvenkatachari B, DiBiase AT. Role of the general dental practitioner in managing the risks of orthodontic treatment. Br Dent J 2021; 231:682-688. [PMID: 34893726 DOI: 10.1038/s41415-021-3713-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 05/13/2021] [Indexed: 11/09/2022]
Abstract
The aim of this article is to outline the potential risks in orthodontic treatment and the general dental practitioner's role in reducing and managing such risks. The success of orthodontic treatment largely depends on patient understanding of the risk/benefit implications of the orthodontic treatment and all of the potential consequences involved in such treatment. A perfect blend of good case selection, sound clinical judgement and, more importantly, a patient's clear understanding of the potential risks involved and the treatment implications help minimise and manage potential hazards that occur during the course of the treatment.
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Affiliation(s)
- Prashanth Narayanan
- Associate Dentist, West Park Dental Practice, Crownhill Rd, Higher St Budeaux, Plymouth, PL5 2QT, UK
| | - Badri Thiruvenkatachari
- Honorary Senior Lecturer, School of Dentistry, Coupland 3 Building, University of Manchester, Higher Cambridge Street, Manchester, M13 9PL, UK
| | - Andrew T DiBiase
- Consultant Orthodontist, Maxillofacial Unit William Harvey Hospital, East Kent University Foundation NHS Trust, Kennington Rd, Willesborough, Ashford, TN24 0LZ, UK; Professor in Orthodontics, Sree Balaji Dental College and Hospital, Bharath Institute of Higher Education and Research, Chennai, 600100, India.
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10
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Abstract
Hydrogenated amorphous carbon (a-C:H) coatings are attractive materials for protecting metallic surfaces in extreme biological environments like the human oral cavity, due to the unusual combination of mechanical properties, superior bioinertness, and relative easier and cheaper production. In this work, two a-C:H coatings were deposited on AISI 316L substrates by reactive magnetron sputtering with two CH4 flows to assess if this outstanding system could extend its application range to orthodontics. A 30-day immersion test in Fusayama-Meyer artificial saliva was conducted to mimic an extreme acidic intraoral pH. Extracts were quantified and used to perform in vitro assays with mono- and co-cultures of macrophages and fibroblast to assess cell viability, while mechanical and structural behaviors were studied by nanoindentation and visible Raman. The empirically estimated H contents of ~28 and 40 at.% matched the hard and soft a-C:H coating regimes of 18 and 7 GPa, respectively. After immersion, no important structural/mechanical modifications occurred, regardless of the H content, without corrosion signs, delamination, or coating detachment. However, the adhesion-promoting Cr-based interlayer seems to reduce corrosion resistance via galvanic coupling. The highest biocompatibility was found for a-C:H coatings with the lowest H content. This study indicates that sputtered a-C:H are promising surface materials in orthodontics.
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11
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Fixed retention: pitfalls and complications. Br Dent J 2021; 230:703-708. [PMID: 34117424 DOI: 10.1038/s41415-021-2892-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/08/2020] [Indexed: 11/08/2022]
Abstract
Long-term stability of orthodontic treatment results is problematic. Long-term or even lifelong retention with bonded retainers is being increasingly used among clinicians. Bonded retainers can provide an efficient and attractive method of retention, particularly because they require minimal compliance from patients. However, the use of bonded retainers is associated with relatively frequent complications, such as detachments of the adhesive layer or wire fractures, as well as unexpected complications with potentially severe consequences with associated periodontal and general health risks. It is imperative that the whole dental team are aware of these pitfalls and complications, and appreciate how to minimise and address these.
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12
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Almeida TFA, Oliveira SR, de Noronha MS, Moreno A, Mesquita RA, Abreu LG, da Silva TA. Type IV hypersensitivity associated with restorative materials: Clinical report and systematic literature review. J Prosthet Dent 2021; 128:1201-1210. [PMID: 33820631 DOI: 10.1016/j.prosdent.2021.01.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 10/21/2022]
Abstract
STATEMENT OF PROBLEM Type IV hypersensitivity reactions (Type IV HR) are immune responses mediated by antigen-specific effector T cells. PURPOSE The purpose of this clinical report and systematic review was to report the clinicopathological features of Type IV HR in the oral mucosa and to present a systematic literature review of case reports and case series of individuals with Type IV HR in the oral mucosa related to contact with dental materials. MATERIAL AND METHODS The presented clinical lesions were melanotic macules with burning that affected the internal labial mucosa in contact with composite resin veneer crowns. Histopathological and immunohistochemical analysis of the lesion was performed. The systematic literature review was performed based on a search in 4 electronic databases (PubMed/MEDLINE, Scopus, Web of Science, and Ovid). RESULTS Immunohistochemistry showed positivity for CD4, CD8, CD20, CD3, tryptase, and CD117. After conservative treatment, the patient reported improvement of symptoms, and a decrease in the number of inflammatory cells was verified. Twenty-one articles were included in the review. Unlike the present patient, the authors of all the articles recommended radical treatment with the removal of the dental material. CONCLUSIONS Type IV HR in oral mucosa is rare, and the assessment of clinical and histopathological characteristics is essential to perform an accurate diagnosis and provide appropriate treatment.
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Affiliation(s)
- Tatiana F A Almeida
- Postdoctoral research, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Sicília R Oliveira
- PhD student, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Mariana S de Noronha
- PhD student, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Amália Moreno
- Professor, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Ricardo A Mesquita
- Professor, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Lucas G Abreu
- Professor, Department of Child's and Adolescent's Oral Health, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Tarcília A da Silva
- Professor, Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.
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13
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A Comparative Electrochemical and Morphological Investigation on the Behavior of NiCr and CoCr Dental Alloys at Various Temperatures. METALS 2021. [DOI: 10.3390/met11020256] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The purpose of our study is to compare the behavior of two reprocessed dental alloys (NiCr and CoCr) at different temperatures considering the idea that food and drinks in the oral cavity create various compositions at different pH levels; the novelty is the investigation of temperature effect on corrosion parameters and ion release of dental alloys. Electrochemical stability was studied together with morphology, elemental composition and ions release determination. The results obtained are in good concordance: electrochemistry studies reveal that the corrosion rate is increasing by increasing the temperature. From SEM coupled with EDS, the oxide film formed on the surface of the alloys is stable at low temperatures and a trend to break after 310K. ICP-MS results evidence that in accordance with increasing temperature, the quantities of ions released from the alloys immersed in artificial saliva also increase, though they still remain small, less than 20 ppm.
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14
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Sabantseva EG, Ivanova EV, Rabinovich IM. [Manifestations of allergic reactions occurring at a dental appointment]. STOMATOLOGIIA 2021; 100:29-32. [PMID: 35081697 DOI: 10.17116/stomat202110006229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To analyze the data of modern scientific literature to conduct a study on identifying the true allergic reaction at a dental appointment. MATERIAL AND METHODS The article is based on the study of materials from domestic and foreign research databases eLibrary, PubMed, Cochrane Database Systematic Reviews. The research period is 15 years. RESULTS Among dental materials, the most common allergens are local anesthetics, metal alloys, components of composite materials, latex. CONCLUSION If allergy is suspected, it is necessary to carefully collect an anamnesis and conduct a clinical examination of the patient with the involvement of specialist doctors, with the recommendation of skin tests and test subcutaneous provocation.
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Affiliation(s)
- E G Sabantseva
- Russian Medical Academy of Continuous Professional Education» of the Ministry of Healthcare of the Russian Federation, Moscow, Russia
| | - E V Ivanova
- Russian Medical Academy of Continuous Professional Education» of the Ministry of Healthcare of the Russian Federation, Moscow, Russia
- Moscow Regional Research and Clinical Institute, Moscow, Russia
| | - I M Rabinovich
- Russian Medical Academy of Continuous Professional Education» of the Ministry of Healthcare of the Russian Federation, Moscow, Russia
- Central Research Institute of Dentistry and Maxillofacial Surgery of Ministry of Health of the Russian Federation, Moscow, Russia
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15
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Szuhanek CA, Watz CG, Avram Ș, Moacă EA, Mihali CV, Popa A, Campan AA, Nicolov M, Dehelean CA. Comparative Toxicological In Vitro and In Ovo Screening of Different Orthodontic Implants Currently Used in Dentistry. MATERIALS 2020; 13:ma13245690. [PMID: 33322183 PMCID: PMC7763890 DOI: 10.3390/ma13245690] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/03/2020] [Accepted: 12/09/2020] [Indexed: 12/27/2022]
Abstract
Selecting the most biocompatible orthodontic implant available on the market may be a major challenge, given the wide array of orthodontic devices currently available on the market. The latest scientific data have suggested that in vitro evaluations using oral cell lines provide reliable data regarding the toxicity of residual particles released by different types of orthodontic devices. In this regard, the in vitro biocompatibility of three different commercially available implants (stainless steel and titanium-based implants) was assessed. METHODS As an in vitro model, human gingival fibroblasts (HGFs) were employed to evaluate the cellular morphology, cell viability, and cytotoxicity by means of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) assays at 24 h and 72 h post-exposure to test implants. RESULTS The results correlate the composition and topography of the implant surface with biological experimental evaluations related to directly affected cells (gingival fibroblasts) and toxicological results on blood vessels (hen's egg test-chorioallantoic membrane (HET-CAM) assay). The stainless steel implant exhibits a relative cytotoxicity against HGF cells, while the other two samples induced no significant alterations of HGF cells. CONCLUSION Among the three test orthodontic implants, the stainless steel implant induced slight cytotoxic effects, thus increased vigilance is required in their clinical use, especially in patients with high sensitivity to nickel.
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Affiliation(s)
- Camelia A. Szuhanek
- Department of Orthodontics, Faculty of Dental Medicine, Victor Babeş University of Medicine and Pharmacy, 9 No., Revolutiei Bv., 300041 Timişoara, Romania; (C.A.S.); (A.P.)
| | - Claudia G. Watz
- Departament of Pharmaceutical Physics and Biophysics, Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., 300041 Timişoara, Romania;
- Correspondence: ; Tel.: +40-746-227-217
| | - Ștefana Avram
- Department of Pharmacognosy, Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., 300041 Timişoara, Romania;
| | - Elena-Alina Moacă
- Departament of Toxicology, Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., 300041 Timişoara, Romania; (E.-A.M.); (A.A.C.); (C.A.D.)
| | - Ciprian V. Mihali
- Department of Life Sciences, Faculty of Medicine, Vasile Goldis Western University of Arad, 86 No., Liviu Rebreanu St., 310414 Arad, Romania;
- Molecular Research Department, Research and Development Station for Bovine, 32 No., Bodrogului St., 310059 Arad, Romania
| | - Adelina Popa
- Department of Orthodontics, Faculty of Dental Medicine, Victor Babeş University of Medicine and Pharmacy, 9 No., Revolutiei Bv., 300041 Timişoara, Romania; (C.A.S.); (A.P.)
| | - Andrada A. Campan
- Departament of Toxicology, Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., 300041 Timişoara, Romania; (E.-A.M.); (A.A.C.); (C.A.D.)
| | - Mirela Nicolov
- Departament of Pharmaceutical Physics and Biophysics, Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., 300041 Timişoara, Romania;
| | - Cristina A. Dehelean
- Departament of Toxicology, Faculty of Pharmacy, Victor Babeş University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., 300041 Timişoara, Romania; (E.-A.M.); (A.A.C.); (C.A.D.)
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Abstract
Allergic contact hypersensitivity reactions of the oral mucosa pose a significant medical concern for some patients. Oral hypersensitivity reactions can result from a vast number of allergenic chemicals, but occur commonly from dental materials, flavorings, and preservatives. Clinical presentation is varied and often overlaps with other oral conditions, complicating their diagnosis and management. The most common clinical entities associated with oral hypersensitivity reactions are oral lichenoid reactions and allergic contact cheilitis. In addition to reviewing these conditions and their most common corresponding allergens, this article summarizes the pathogenesis of oral hypersensitivity reactions and addresses patch testing pearls.
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Affiliation(s)
| | - Eric T Stoopler
- Department of Oral Medicine, University of Pennsylvania, Penn Dental Medicine, 240 South 40th Street, Room 206, Schattner Building, Philadelphia, PA 19104, USA
| | - Glen H Crawford
- Department of Dermatology, University of Pennsylvania, 822 Pine Street Suite 2A, Philadelphia, PA 19107, USA
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Zigante M, Rincic Mlinaric M, Kastelan M, Perkovic V, Trinajstic Zrinski M, Spalj S. Symptoms of titanium and nickel allergic sensitization in orthodontic treatment. Prog Orthod 2020; 21:17. [PMID: 32607604 PMCID: PMC7326753 DOI: 10.1186/s40510-020-00318-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/06/2020] [Indexed: 01/26/2023] Open
Abstract
Aim The study aimed to evaluate to which extent self-reported symptomatology, age, and sex are predictors of titanium and nickel allergic sensitization in patients in treatment with fixed orthodontic appliances. Methods The study analyzed 228 subjects aged 11–45 years (median 18, interquartile range 16–22); 68% of them were females, and 52% were adolescents. The allergic sensitization testing included epicutaneous patch test to titanium, titanium dioxide, titanium oxalate, titanium nitride, and nickel sulfate. The questionnaire on symptoms potentially linked to titanium and nickel sensitization was used. Results Prevalence of the allergic sensitization to titanium in patients undergoing orthodontic treatment was 4% (2% only to titanium without nickel) while to nickel 14% (12% nickel without titanium). Hypersensitivity to both metals at the same time was present in 2% of subjects. Sensitization to nickel was more common in females than in males (17 vs. 8%) and much more common in adults than in adolescents with small effect size (20 vs. 8%; p = 0.013). Sensitization to titanium was more common in females than in males (6 vs. 1%) with no difference in age. Multiple logistic regression analysis revealed that adult age increases the odds for being sensitized to nickel for 2.4 × (95% CI 1.1–5.6; p = 0.044) while watery eyes for 3.7 × (95% CI 1.2–11.1; p = 0.022). None of the symptoms were significant predictors of titanium sensitization. Conclusion Allergic sensitization to titanium and nickel are not very frequent in orthodontic patients, and self-reported symptomatology is a weak predictor of those sensitizations.
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Affiliation(s)
- Martina Zigante
- Department of Orthodontics, University of Rijeka, Faculty of Dental Medicine, Kresimirova 40, 51000, Rijeka, Croatia.
| | | | - Marija Kastelan
- Department of Dermatovenereology, University of Rijeka, Faculty of Medicine, Brace Branchetta 20, 51000, Rijeka, Croatia
| | - Vjera Perkovic
- Department of Orthodontics, University of Rijeka, Faculty of Dental Medicine, Kresimirova 40, 51000, Rijeka, Croatia
| | - Magda Trinajstic Zrinski
- Department of Orthodontics, University of Rijeka, Faculty of Dental Medicine, Kresimirova 40, 51000, Rijeka, Croatia
| | - Stjepan Spalj
- Department of Orthodontics, University of Rijeka, Faculty of Dental Medicine, Kresimirova 40, 51000, Rijeka, Croatia.,Department of Dental Medicine 1, J.J. Strossmayer University of Osijek, Faculty of Dental Medicine and Health, Crkvena 21, 31000, Osijek, Croatia
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18
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Genchi G, Carocci A, Lauria G, Sinicropi MS, Catalano A. Nickel: Human Health and Environmental Toxicology. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E679. [PMID: 31973020 PMCID: PMC7037090 DOI: 10.3390/ijerph17030679] [Citation(s) in RCA: 467] [Impact Index Per Article: 116.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/14/2020] [Accepted: 01/18/2020] [Indexed: 12/20/2022]
Abstract
Nickel is a transition element extensively distributed in the environment, air, water, and soil. It may derive from natural sources and anthropogenic activity. Although nickel is ubiquitous in the environment, its functional role as a trace element for animals and human beings has not been yet recognized. Environmental pollution from nickel may be due to industry, the use of liquid and solid fuels, as well as municipal and industrial waste. Nickel contact can cause a variety of side effects on human health, such as allergy, cardiovascular and kidney diseases, lung fibrosis, lung and nasal cancer. Although the molecular mechanisms of nickel-induced toxicity are not yet clear, mitochondrial dysfunctions and oxidative stress are thought to have a primary and crucial role in the toxicity of this metal. Recently, researchers, trying to characterize the capability of nickel to induce cancer, have found out that epigenetic alterations induced by nickel exposure can perturb the genome. The purpose of this review is to describe the chemical features of nickel in human beings and the mechanisms of its toxicity. Furthermore, the attention is focused on strategies to remove nickel from the environment, such as phytoremediation and phytomining.
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Affiliation(s)
- Giuseppe Genchi
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, 87036 Arcavacata di Rende (Cosenza), Italy; (G.G.); (G.L.)
| | - Alessia Carocci
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari “A. Moro”, 70125 Bari, Italy;
| | - Graziantonio Lauria
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, 87036 Arcavacata di Rende (Cosenza), Italy; (G.G.); (G.L.)
| | - Maria Stefania Sinicropi
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, 87036 Arcavacata di Rende (Cosenza), Italy; (G.G.); (G.L.)
| | - Alessia Catalano
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari “A. Moro”, 70125 Bari, Italy;
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Chaubey AK, Mishra SK, Chowdhary R. Positive Material Identification testing of dental implant to correlate their compositions with allergic conditions. J Oral Biol Craniofac Res 2019; 9:294-298. [PMID: 31289719 PMCID: PMC6593213 DOI: 10.1016/j.jobcr.2019.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/14/2019] [Accepted: 05/14/2019] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND Rapid increase of products containing titanium leads to the increases in percutaneous and permucosal exposure of populations to the titanium. PURPOSE Evaluate the various material compositions in five commercially available dental implant systems and correlate the obtained material contents with allergic conditions seen with implants. MATERIAL AND METHODS A total of 25 implant, with 5 samples each in 5 groups of commercially available dental implants (MKIII, Myriad, Nobel Replace, MIS and Alpha Dent) were used in the study. Positive Material Identification (PMI) testing was done to analyse the amount of different metals (percentage by mass) present in the dental implants. RESULTS Highest titanium content, 99.47% by mass was found in sample 2 (Myriad) and least, 89.04% by mass in sample 5(Alpha dent). Nickel was found only in sample 5 (Alpha dent) in 0.079% by mass and zinc in sample 4 (MIS) in0.084% by mass, chromium was found in sample 1 (MK III) in 0.263% by mass and in sample 2 in0.273% by mass. CONCLUSIONS Implant composition should be made mandatory to be disclosed on the implant packet and before implant placement patch test for the allergen present in the particular implant can be done for the patient's health benefit and long term clinical success of dental implants.
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Affiliation(s)
- Avadhesh Kumar Chaubey
- Department of Prosthodontics, Rajarajeswari Dental College and Hospital, Bengaluru, 560074, India
| | - Sunil Kumar Mishra
- Department of Prosthodontics, Peoples College of Dental Sciences & Research Centre, Bhopal, 462037, India
| | - Ramesh Chowdhary
- Department of Prosthodontics, Rajarajeswari Dental College and Hospital, Bengaluru, 560074, India
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20
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Budimir J, Mravak-Stipetić M, Bulat V, Ferček I, Japundžić I, Lugović-Mihić L. Allergic reactions in oral and perioral diseases—what do allergy skin test results show? Oral Surg Oral Med Oral Pathol Oral Radiol 2019; 127:40-48. [DOI: 10.1016/j.oooo.2018.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 07/29/2018] [Accepted: 08/03/2018] [Indexed: 10/28/2022]
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21
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Takada M, Nakajima A, Kuroda S, Horiuchi S, Shimizu N, Tanaka E. In vitro evaluation of frictional force of a novel elastic bendable orthodontic wire. Angle Orthod 2018; 88:602-610. [PMID: 29799272 DOI: 10.2319/111417-779.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To determine the frictional force (FF) of the novel, elastic, bendable titanium-niobium (Ti-Nb) alloy orthodontic wire in stainless steel (SS) brackets and to compare it with those of titanium-nickel (Ti-Ni) and titanium-molybdenum (Ti-Mo) alloy wires. MATERIALS AND METHODS Three sizes of Ti-Nb, Ti-Ni, and Ti-Mo alloy wires were ligated with elastic modules to 0.018-inch and 0.022-inch SS brackets. The dynamic FFs between the orthodontic wires and SS brackets were measured at three bracket-wire angles (0°, 5°, and 10°) with an Instron 5567 loading apparatus (Canton, Mass). RESULTS FFs increased gradually with the angle and wire size. In the 0.018-inch-slot bracket, the dynamic FFs of Ti-Nb and Ti-Ni alloy wires were almost the same, and those of the Ti-Mo alloy wire were significantly greater ( P<0.05). FF values were 1.5-2 times greater in the 0.022-inch-slot bracket than in the 0.018-inch-slot bracket, regardless of alloy wire type, and the Ti-Mo alloy wire showed the greatest FF. Scanning electric microscopic images showed that the surface of the Ti-Mo alloy wire was much rougher than that of the Ti-Ni and Ti-Nb alloy wires. CONCLUSION These findings demonstrate that the Ti-Nb alloy wire has almost the same frictional resistance as the Ti-Ni alloy wire, although it has a higher elastic modulus.
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22
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Alnazzawi A. Effect of Fixed Metallic Oral Appliances on Oral Health. J Int Soc Prev Community Dent 2018; 8:93-98. [PMID: 29780732 PMCID: PMC5946530 DOI: 10.4103/jispcd.jispcd_416_17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 01/17/2018] [Indexed: 11/30/2022] Open
Abstract
There is a substantial proportion of the population using fixed metallic oral appliances, such as crowns and bridges, which are composed of various dental alloys. These restorations may be associated with a number of effects on oral health with variable degrees of severity, to review potential effects of using fixed metallic oral appliances, fabricated from various alloys. The MEDLINE/PubMed database was searched using certain combinations of keywords related to the topic. The search revealed that burning mouth syndrome, oral pigmentation, hypersensitivity and lichenoid reactions, and genotoxic and cytotoxic effects are the major potential oral health changes associated with fixed prosthodontic appliances. Certain oral disorders are associated with the use of fixed metallic oral appliances. Patch test is the most reliable method that can be applied for identifying metal allergy, and the simultaneous use of different alloys in the mouth is discouraged.
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Affiliation(s)
- Ahmad Alnazzawi
- Department of Substitutive Dental Sciences, College of Dentistry, Taibah University Madinah, KSA
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23
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Nordstrom B, Shoji T, Anderson WC, Fields HW, Beck FM, Kim DG, Takano-Yamamoto T, Deguchi T. Comparison of changes in irregularity and transverse width with nickel-titanium and niobium-titanium-tantalum-zirconium archwires during initial orthodontic alignment in adolescents: A double-blind randomized clinical trial. Angle Orthod 2018; 88:348-354. [PMID: 29504810 DOI: 10.2319/061417-393.1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES The purpose of this prospective, double-blind, randomized clinical trial was to compare the clinical efficiency of nickel-titanium (NiTi) and niobium-titanium-tantalum-zirconium (TiNbTaZr) archwires during initial orthodontic alignment. MATERIALS AND METHODS All subjects (ages between 12 and 20 years) underwent nonextraction treatment using 0.022-inch brackets. All patients were randomized into two groups for initial alignment with 0.016-inch NiTi archwires (n = 14), or with 0.016-inch TiNbTaZr archwires (n = 14). Digital scans were taken during the course of treatment and were used to compare the improvement in Little's Irregularity Index and the changes in intercanine and intermolar widths. RESULTS There was approximately a 27% reduction in crowding during the first month with the use of 0.016-inch TiNbTaZr (Gummetal) wire, and an additional 25% decrease in crowding was observed during the next month. There was no significant difference between the two treatment groups in the decrease in irregularity over time ( P = .29). There was no significant difference between the two groups in the changes in intercanine and intermolar width ( P = .80). CONCLUSIONS It can be concluded that Gummetal wires and conventional NiTi wires possess a similar ability to align teeth, and Gummetal wires have additional advantages over conventional NiTi, such as formability and use in patients with nickel allergy.
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Abstract
The International Contact Dermatitis Research Group proposes a classification for the clinical presentation of contact allergy. The classification is based primarily on the mode of clinical presentation. The categories are direct exposure/contact dermatitis, mimicking or exacerbation of preexisting eczema, multifactorial dermatitis including allergic contact dermatitis, by proxy, mimicking angioedema, airborne contact dermatitis, photo-induced contact dermatitis, systemic contact dermatitis, noneczematous contact dermatitis, contact urticaria, protein contact dermatitis, respiratory/mucosal symptoms, oral contact dermatitis, erythroderma/exfoliative dermatitis, minor forms of presentation, and extracutaneous manifestations.
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25
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Vulićević Z, Beloica M, Kosanović D, Radović I, Juloski J, Ivanović D. Prosthetics in Paediatric Dentistry. BALKAN JOURNAL OF DENTAL MEDICINE 2017. [DOI: 10.1515/bjdm-2017-0012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Summary
Premature loss of teeth in children may lead to both functional and esthetic problems. Missing teeth in both anterior and posterior regions may cause malfunctions in mastication and proper pronunciation. If the missing teeth are not replaced, further complications may occur, including adjacent tooth migration, loss of alveolar bone, and irregular occlusion. Considering the sensitive nature of children, loss of teeth may cause the development of insecurities and low self esteem problems. Due to dynamic nature of growth in children and adolescents, prosthetic appliances must not hinder development of orofacial system, and must meet adequate esthetic and functional standards. Dental prosthetic appliances in paediatrics must be planned with respect to the special conditions that led to tooth loss or damage. Multi-disciplinary approach is needed, under constant supervision of paediatric dentist and orthodontist, as well as regular checkups with clinical and radiographical examinations.
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Affiliation(s)
- Zoran Vulićević
- Clinic for Pediatric and Preventive Dentistry, Faculty of Dental Medicine, University of Belgrade, Belgrade , Serbia
| | - Miloš Beloica
- Clinic for Pediatric and Preventive Dentistry, Faculty of Dental Medicine, University of Belgrade, Belgrade , Serbia
| | - Dušan Kosanović
- Clinic for Pediatric and Preventive Dentistry, Faculty of Dental Medicine, University of Belgrade, Belgrade , Serbia
| | - Ivana Radović
- Clinic for Pediatric and Preventive Dentistry, Faculty of Dental Medicine, University of Belgrade, Belgrade , Serbia
| | - Jelena Juloski
- Clinic for Pediatric and Preventive Dentistry, Faculty of Dental Medicine, University of Belgrade, Belgrade , Serbia
| | - Dragan Ivanović
- Faculty of Medicine, University of East Sarajevo Republic of Srpska, Sarajevo , Bosnia and Herzegovina
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26
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Soni HK. Application of CAD-CAM for Fabrication of Metal-Free Band and Loop Space Maintainer. J Clin Diagn Res 2017; 11:ZD14-ZD16. [PMID: 28384989 DOI: 10.7860/jcdr/2017/23459.9246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 11/18/2016] [Indexed: 11/24/2022]
Abstract
An ideal occlusion with proper tooth alignment and fully functional teeth is the ultimate goal of all dental treatments. Premature extraction of deciduous teeth is a common sequeale of untreated dental caries in teeth in which the damage is far beyond repair. Premature extraction might lead to loss of space for the successor tooth, drifting of teeth and loss of arch integrity leading to malocclusion in the permanent teeth. To prevent the space loss, space maintainers are designed and delivered at the time of extraction to allow for development of proper functional occlusion in children till the eruption of the succedaneous permanent tooth. A six-year-old female patient with chronic intra-radicular abscess in upper right first primary molar was treated with extraction followed by the placement of BruxZir zirconia space maintainer. Clinical and radiographic examinations were performed at one and six months. At the end of six months, the patient was completely asymptomatic and there were no visible signs of gingival inflammation and tissue irritation at the site of the space maintainer.
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Affiliation(s)
- Harleen Kaur Soni
- Senior Lecturer, Pedodontics and Preventive Dentistry, Manubhai Patel Dental College , Vadodara, Gujarat, India
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27
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Sonofuchi K, Hagiwara Y, Koizumi Y, Chiba A, Kawano M, Nakayama M, Ogasawara K, Yabe Y, Itoi E. Quantitative in vivo biocompatibility of new ultralow-nickel cobalt-chromium-molybdenum alloys. J Orthop Res 2016; 34:1505-13. [PMID: 26744180 DOI: 10.1002/jor.23150] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 01/04/2016] [Indexed: 02/04/2023]
Abstract
Nickel (Ni) eluted from metallic biomaterials is widely accepted as a major cause of allergies and inflammation. To improve the safety of cobalt-chromium-molybdenum (Co-Cr-Mo) alloy implants, new ultralow-Ni Co-Cr-Mo alloys with and without zirconium (Zr) have been developed, with Ni contents of less than 0.01%. In the present study, we investigated the biocompatibility of these new alloys in vivo by subcutaneously implanting pure Ni, conventional Co-Cr-Mo, ultralow-Ni Co-Cr-Mo, and ultralow-Ni Co-Cr-Mo with Zr wires into the dorsal sides of mice. After 3 and 7 days, tissues around the wire were excised, and inflammation; the expression of IL-1β, IL-6, and TNF-α; and Ni, Co, Cr, and Mo ion release were analyzed using histological analyses, qRT-PCR, and inductively coupled plasma mass spectrometry (ICP-MS), respectively. Significantly larger amounts of Ni eluted from pure Ni wires than from the other wires, and the degree of inflammation depended on the amount of eluted Ni. Although no significant differences in inflammatory reactions were identified among new alloys and conventional Co-Cr-Mo alloys in histological and qRT-PCR analyses, ICP-MS analysis revealed that Ni ion elution from ultralow-Ni Co-Cr-Mo alloys with and without Zr was significantly lower than from conventional Co-Cr-Mo alloys. Our study, suggests that the present ultralow-Ni Co-Cr-Mo alloys with and without Zr have greater safety and utility than conventional Co-Cr-Mo alloys. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:1505-1513, 2016.
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Affiliation(s)
- Kazuaki Sonofuchi
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Yoshihiro Hagiwara
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Yuichiro Koizumi
- Institute of Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai, 980-8577, Japan
| | - Akihiko Chiba
- Institute of Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai, 980-8577, Japan
| | - Mitsuko Kawano
- Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-Machi, Aoba-Ku, Sendai, 980-8575, Japan
| | - Masafumi Nakayama
- Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-Machi, Aoba-Ku, Sendai, 980-8575, Japan
| | - Kouetsu Ogasawara
- Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-Machi, Aoba-Ku, Sendai, 980-8575, Japan
| | - Yutaka Yabe
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
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Rogers HJ, Batley HA, Deery C. An Overview of Preformed Metal Crowns. Part 1: Conventional Technique. ACTA ACUST UNITED AC 2016; 42:933-6, 938. [PMID: 26855999 DOI: 10.12968/denu.2015.42.10.933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This article details the clinical techniques for conventional preformed metal crown placement. It aims to increase the readers' awareness of the clinical advantages of preformed metal crowns and the indications for their use. The second part will discuss the Hall Technique. CPD/Clinical Relevance: This two-part article aims to guide the reader through the conventional and alternative techniques available for placement of a preformed metal crown whilst providing an update of the evidence for each.
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Syed M, Chopra R, Sachdev V. Allergic Reactions to Dental Materials-A Systematic Review. J Clin Diagn Res 2015; 9:ZE04-9. [PMID: 26557634 PMCID: PMC4625353 DOI: 10.7860/jcdr/2015/15640.6589] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 08/24/2015] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Utility of various dental materials ranging from diagnosis to rehabilitation for the management of oral diseases are not devoid of posing a potential risk of inducing allergic reactions to the patient, technician and dentist. This review aims to develop a systematic approach for the selection and monitoring of dental materials available in the market thereby giving an insight to predict their risk of inducing allergic reactions. MATERIALS AND METHODS Our data included 71 relevant articles which included 60 case reports, 8 prospective studies and 3 retrospective studies. The source of these articles was Pub Med search done with the following terms: allergies to impression materials, sodium hypochlorite, Ledermix paste, zinc oxide eugenol, formaldehyde, Latex gloves, Methyl methacrylate, fissure sealant, composites, mercury, Nickel-chromium, Titanium, polishing paste and local anaesthesia. All the relevant articles and their references were analysed. The clinical manifestations of allergy to different dental materials based on different case reports were reviewed. RESULTS After reviewing the literature, we found that the dental material reported to cause most adverse reactions in patients is amalgam and the incidence of oral lichenoid reactions adjacent to amalgam restorations occur more often than other dental materials. CONCLUSION The most common allergic reactions in dental staff are allergies to latex, acrylates and formaldehyde. While polymethylmethacrylates and latex trigger delayed hypersensitivity reactions, sodium metabisulphite and nickel cause immediate reactions. Over the last few years, due to the rise in number of patients with allergies from different materials, the practicing dentists should have knowledge about documented allergies to known materials and thus avoid such allergic manifestations in the dental clinic.
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Affiliation(s)
- Meena Syed
- Post Graduate Student, Department of Pedodontics, ITS-CDSR Centre for Dental studies and Research, Muradnagar, Ghaziabad, Uttar Pradesh, India
| | - Radhika Chopra
- Associate Professor, Department of Pedodontics and Preventive Dentistry, ITS-CDSR Centre for Dental studies and Research, Muradnagar, Ghaziabad, Uttar Pradesh, India
| | - Vinod Sachdev
- Professor, HOD and Principal, Department of Pedodontics and Preventive Dentistry, ITS-CDSR Centre for Dental studies and Research, Muradnagar, Ghaziabad, Uttar Pradesh, India
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Martín-Cameán A, Jos Á, Mellado-García P, Iglesias-Linares A, Solano E, Cameán AM. In vitro and in vivo evidence of the cytotoxic and genotoxic effects of metal ions released by orthodontic appliances: A review. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:86-113. [PMID: 26093195 DOI: 10.1016/j.etap.2015.05.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/13/2015] [Accepted: 05/16/2015] [Indexed: 06/04/2023]
Abstract
Intraoral fixed orthodontic appliances are frequently used in the clinical practice of dentistry. They are made from alloys containing different metals at various percentages. The use of these appliances leads to the long-term exposure of patients to these materials, and the potential toxic effects of this exposure raises concerns about patient safety. Thus, the biocompatibility (corrosion behaviour and toxicity) of these materials has to be evaluated prior to clinical use. In the present report, the most recent studies in the scientific literature examining metal ion release from orthodontic appliances and the toxic effects of these ions have been reviewed with a special focus on cytotoxicity and genotoxicity. Previous studies suggest that a case-by-case safety evaluation is required to take into account the increasing variability of materials, their composition and the manufacturing processes. Moreover, in vivo toxicity studies in regard to metal release, cytotoxicity and genotoxicity are still scarce. Therefore, in vitro and in vivo monitoring studies are needed to establish cause-effect relationships between metal ion release and biomarkers of cytotoxicity and genotoxicity. Further investigations could be performed to elucidate the toxic mechanisms involved in the observed effects with a special emphasis on oxidative damage.
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Affiliation(s)
- Ana Martín-Cameán
- Stomatology Department, School of Dentistry, University of Sevilla, Spain.
| | - Ángeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Spain
| | | | | | - Enrique Solano
- Stomatology Department, School of Dentistry, University of Sevilla, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, Spain
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Gölz L, Papageorgiou SN, Jäger A. Nickel hypersensitivity and orthodontic treatment: a systematic review and meta-analysis. Contact Dermatitis 2015; 73:1-14. [DOI: 10.1111/cod.12392] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 02/14/2015] [Accepted: 02/24/2015] [Indexed: 02/06/2023]
Affiliation(s)
- Lina Gölz
- Department of Orthodontics; School of Dentistry, University of Bonn; 53111 Bonn Germany
| | - Spyridon N. Papageorgiou
- Department of Orthodontics; School of Dentistry, University of Bonn; 53111 Bonn Germany
- Department of Oral Technology; School of Dentistry, University of Bonn; 53111 Bonn Germany
| | - Andreas Jäger
- Department of Orthodontics; School of Dentistry, University of Bonn; 53111 Bonn Germany
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Sheibaninia A. Effect of thermocycling on nickel release from orthodontic arch wires: an in vitro study. Biol Trace Elem Res 2014; 162:353-9. [PMID: 25262019 DOI: 10.1007/s12011-014-0136-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 09/17/2014] [Indexed: 12/01/2022]
Abstract
The amount of daily intake of metals from orthodontic appliances over time is a matter of great concern. Nickel results in one of the most common metal-induced allergic contact dermatitis in humans; it produces more allergic reactions than all the other metals combined together. The purpose of this study was to evaluate the effects of thermocycling on the nickel release from orthodontic arch wires stored in artificial saliva with different pH values. Forty new wire pieces were selected. Each wire piece was placed in a special capillary Pyrex tube filled with artificial saliva, which was sealed and immersed in deionized water at 37 °C. The samples were divided into four groups of ten. Group I received no treatment; group II was subjected to thermocycling. The pH of storage in groups III and IV was reduced to 4.5, and group IV was subjected to thermocycling. Thermocycling was carried out between 5 and 55 °C for 500 cycles. The release of nickel ions was statistically analyzed by two-way ANOVA for the effects of two variables: pH and thermocycling. The interaction between pH and thermocycling was found to be statistically significant (F = 12.127, P = 0.001). Two-way ANOVA showed that different storage media or pH and thermocycling had a significant effect on the nickel release (F = 52.812, P < 0.001 and F = 197.035, P < 0.001, respectively). Thermocycling and pH can adversely affect the release of nickel from orthodontic wires, while thermocycling is clearly the dominant factor.
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Affiliation(s)
- Ahmad Sheibaninia
- Fellowship of Orthosurgery, Department of Orthodontic, Islamic Azad University, Dental Branch, No.4, 10th Neyestan Alley, Pasdaran Ave., P.O.Box 19585-175, Tehran, Iran,
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Kameda T, Oda H, Ohkuma K, Sano N, Batbayar N, Terashima Y, Sato S, Terada K. Microbiologically influenced corrosion of orthodontic metallic appliances. Dent Mater J 2014; 33:187-95. [PMID: 24583645 DOI: 10.4012/dmj.2013-297] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Biocorrosion (microbiologically influenced corrosion; MIC) occur in aquatic habitats varying in nutrient content, temperature, stress and pH. The oral environment of organisms, including humans, should be one of the most hospitable for MIC. Corrosion of metallic appliances in the oral region is one cause of metal allergy in patients. In this study, an inductively coupled plasma-optical emission spectrometer revealed elution of Fe, Cr and Ni from stainless steel (SUS) appliances incubated with oral bacteria. Three-dimensional laser confocal microscopy also revealed that oral bacterial culture promoted increased surface roughness and corrosion pits in SUS appliances. The pH of the supernatant was lowered after co-culture of appliances and oral bacteria in any combinations, but not reached at the level of depassivation pH of their metallic materials. This study showed that Streptococcus mutans and Streptococcus sanguinis which easily created biofilm on the surfaces of teeth and appliances, did corrode orthodontic SUS appliances.
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Affiliation(s)
- Takashi Kameda
- Department of Orthodontics, The Nippon Dental University, School of Life Dentistry at Niigata
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Martín-Cameán A, Molina-Villalba I, Jos A, Iglesias-Linares A, Solano E, Cameán AM, Gil F. Biomonitorization of chromium, copper, iron, manganese and nickel in scalp hair from orthodontic patients by atomic absorption spectrometry. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:759-771. [PMID: 24632012 DOI: 10.1016/j.etap.2014.01.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 01/31/2014] [Indexed: 06/03/2023]
Abstract
The study was aimed to assess Cu, Cr, Fe, Mn and Ni levels in human scalp hair from a broad population group treated with orthodontic appliances (n=70) to determine, whether the concentration of a given metal was significantly influenced by the orthodontic treatment in comparison to control group (n=56). Levels of metal compounds were determined by atomic absorption spectrometry. The mean, ranges, median and 5th and 95th percentiles of metals analyzed in hair that were hypothesized to be systemically absorbed from stainless steel, are provided. The influence of individual factors on metal concentrations was considered (gender, age), and inter-element interactions were studied by evaluation of correlation coefficients between elements, as well as by multiple regression analysis. Differences in the content of metals in hair were only significantly increased for Mn when compared to the control group, but their levels were of the same magnitude to other control populations, and consequently, no risks linked to the treatment have been found. The orthodontic treatment increased significantly Mn levels in young patients (<20 years old) when compared with control group. Scalp hair analysis is a good method to investigate the release of the elements from fixed orthodontic appliances.
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Affiliation(s)
- Ana Martín-Cameán
- Stomatology Department, School of Dentistry, University of Seville, Spain
| | - Isabel Molina-Villalba
- Department of Legal Medicine and Toxicology, Faculty of Medicine, University of Granada, Spain
| | - Angeles Jos
- Area of Toxicology, Faculty of Pharmacy, University of Seville, Spain
| | | | - Enrique Solano
- Stomatology Department, School of Dentistry, University of Seville, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Seville, Spain
| | - Fernando Gil
- Department of Legal Medicine and Toxicology, Faculty of Medicine, University of Granada, Spain.
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Martín-Cameán A, Jos A, Calleja A, Gil F, Iglesias A, Solano E, Cameán AM. Validation of a method to quantify titanium, vanadium and zirconium in oral mucosa cells by inductively coupled plasma-mass spectrometry (ICP-MS). Talanta 2014; 118:238-44. [DOI: 10.1016/j.talanta.2013.10.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 10/07/2013] [Accepted: 10/15/2013] [Indexed: 11/28/2022]
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McGinley EL, Moran GP, Fleming GJ. Biocompatibility effects of indirect exposure of base-metal dental casting alloys to a human-derived three-dimensional oral mucosal model. J Dent 2013; 41:1091-100. [DOI: 10.1016/j.jdent.2013.08.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 08/06/2013] [Accepted: 08/07/2013] [Indexed: 11/27/2022] Open
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Abstract
The use of nickel casting alloys for long-term restorations in dentistry has long been controversial. A 'tug-of-war' between economic, engineering and biological considerations is central to this controversy; nickel-casting alloys have low costs and favorable physical properties, but are corrosion-prone in the oral environment. Clinicians and researchers have questioned the safety of nickel-containing dental alloys because several nickel compounds are known to cause adverse biological effects in vivo and in vitro in contexts outside of dentistry. The debate revolves around the extent to which corrosion products from oral restorations cause intraoral or systemic biological problems. Current evidence suggests that nickel alloys may be used successfully and safely in dentistry if clinical risks are taken into account. However, these alloys may cause significant clinical problems, primarily allergenic and inflammatory, if the risks are ignored.
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Affiliation(s)
- John C Wataha
- Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle, WA 98195-7456, USA.
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Abstract
The benefits of orthodontic treatment are numerous and in most cases, the benefits outweigh the possible disadvantages. Orthodontic treatment can play an important role in enhancing esthetics, function, and self-esteem in patients. However, it carries with it the risks of enamel demineralization, tissue damage, root resorption, open gingival embrasures in the form of triangular spaces, allergic reactions to nickel, and treatment failure in the form of relapse. These potential complications are easily avoidable by undertaking certain precautions and timely interventions by both the orthodontist and the patient. The orthodontist must ensure that the patient is aware of the associated risks and stress the importance of the patient's role in preventing these untoward outcomes. The decision whether to proceed with the orthodontic treatment is essentially a risk-benefit analysis, where the perceived benefits of commencing treatment outweigh the potential risks. This article provides an overview of the iatrogenic possibilities of orthodontic treatment and the role of the patient as well as the orthodontist in preventing the associated risks.
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Affiliation(s)
- Nazeer Ahmed Meeran
- Department of Orthodontics and Dentofacial Orthopedics, Priyadarshini Dental College and Hospital, Thiruvallur, Tamil Nadu, India
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40
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Chen B, Xia G, Cao XM, Wang J, Xu BY, Huang P, Chen Y, Jiang QW. Urinary levels of nickel and chromium associated with dental restoration by nickel-chromium based alloys. Int J Oral Sci 2013; 5:44-8. [PMID: 23579466 PMCID: PMC3632762 DOI: 10.1038/ijos.2013.13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
This paper aims to investigate if the dental restoration of nickel–chromium based alloy (Ni–Cr) leads to the enhanced excretions of Ni and Cr in urine. Seven hundred and ninety-five patients in a dental hospital had single or multiple Ni–Cr alloy restoration recently and 198 controls were recruited to collect information on dental restoration by questionnaire and clinical examination. Urinary concentrations of Ni and Cr from each subject were measure by graphite furnace atomic absorption spectrometry. Compared to the control group, the urinary level of Ni was significantly higher in the patient group of <1 month of the restoration duration, among which higher Ni excretions were found in those with either a higher number of teeth replaced by dental alloys or a higher index of metal crown not covered with the porcelain. Urinary levels of Cr were significantly higher in the three patient groups of <1, 1 to <3 and 3 to <6 months, especially in those with a higher metal crown exposure index. Linear curve estimations showed better relationships between urinary Ni and Cr in patients within 6-month groups. Our data suggested significant increased excretions of urinary Ni and Cr after dental restoration. Potential short- and long-term effects of Ni–Cr alloy restoration need to be investigated.
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Affiliation(s)
- Bo Chen
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai, China
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Abstract
We have highlighted that exposure of base-metal dental casting alloys to the acidogenic bacterium Streptococcus mutans significantly increases cellular toxicity following exposure to immortalized human TR146 oral keratinocytes. With Inductively Coupled Plasma-Mass Spectrometry (ICP-MS), S. mutans-treated nickel-based (Ni-based) and cobalt-chromium-based (Co-Cr-based) dental casting alloys were shown to leach elevated levels of metal ions compared with untreated dental casting alloys. We targeted several biological parameters: cell morphology, viable cell counts, cell metabolic activity, cell toxicity, and inflammatory cytokine expression. S. mutans-treated dental casting alloys disrupted cell morphology, elicited significantly decreased viable cell counts (p < 0.0001) and cell metabolic activity (p < 0.0001), and significantly increased cell toxicity (p < 0.0001) and inflammatory cytokine expression (p < 0.0001). S. mutans-treated Ni-based dental casting alloys induced elevated levels of cellular toxicity compared with S. mutans-treated Co-Cr-based dental casting alloys. While our findings indicated that the exacerbated release of metal ions from S. mutans-treated base-metal dental casting alloys was the likely result of the pH reduction during S. mutans growth, the exact nature of mechanisms leading to accelerated dissolution of alloy-discs is not yet fully understood. Given the predominance of S. mutans oral carriage and the exacerbated cytotoxicity observed in TR146 cells following exposure to S. mutans-treated base-metal dental casting alloys, the implications for the long-term stability of base-metal dental restorations in the oral cavity are a cause for concern.
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Holst AI, Holst S, Hirschfelder U, Seckendorff VV. Retrieval analysis of different orthodontic brackets: the applicability of electron microprobe techniques for determining material heterogeneities and corrosive potential. J Appl Oral Sci 2012; 20:478-85. [PMID: 23032212 PMCID: PMC3881825 DOI: 10.1590/s1678-77572012000400015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Accepted: 08/25/2011] [Indexed: 11/22/2022] Open
Abstract
Objective The objective of this study was to investigate the applicability of
micro-analytical methods with high spatial resolution to the characterization of
the composition and corrosion behavior of two bracket systems. Material and methods The surfaces of six nickel-free brackets and six nickel-containing brackets were
examined for signs of corrosion and qualitative surface analysis using an electron
probe microanalyzer (EPMA), prior to bonding to patient's tooth surfaces and four
months after clinical use. The surfaces were characterized qualitatively by
secondary electron (SE) images and back scattered electron (BSE) images in both
compositional and topographical mode. Qualitative and quantitative
wavelength-dispersive analyses were performed for different elements, and by
utilizing qualitative analysis the relative concentration of selected elements was
mapped two-dimensionally. The absolute concentration of the elements was
determined in specially prepared brackets by quantitative analysis using pure
element standards for calibration and calculating correction-factors (ZAF). Results Clear differences were observed between the different bracket types. The
nickel-containing stainless steel brackets consist of two separate pieces joined
by a brazing alloy. Compositional analysis revealed two different alloy
compositions, and reaction zones on both sides of the brazing alloy. The
nickel-free bracket was a single piece with only slight variation in element
concentration, but had a significantly rougher surface. After clinical use, no
corrosive phenomena were detectable with the methods applied. Traces of intraoral
wear at the contact areas between the bracket slot and the arch wire were
verified. Conclusion Electron probe microanalysis is a valuable tool for the characterization of
element distribution and quantitative analysis for corrosion studies.
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Affiliation(s)
- Alexandra Ioana Holst
- Dental Clinic 3 - Department of Orthodontics, University Clinic Erlangen, Erlangen, Germany.
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Milheiro A, Kleverlaan C, Muris J, Feilzer A, Pallav P. Nickel release from orthodontic retention wires—The action of mechanical loading and pH. Dent Mater 2012; 28:548-53. [DOI: 10.1016/j.dental.2011.12.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Accepted: 12/23/2011] [Indexed: 12/30/2022]
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Toledo CEP, Souza MA, Fraga MR, Ribeiro LC, Ferreira AP, Vitral RWF. Cellular viability and nitric oxide (NO) production by J774 macrophages in the presence of orthodontic archwires. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/jbise.2012.55032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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46
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McGinley E, Moran G, Fleming G. Base-metal dental casting alloy biocompatibility assessment using a human-derived three-dimensional oral mucosal model. Acta Biomater 2012; 8:432-8. [PMID: 21889621 DOI: 10.1016/j.actbio.2011.08.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 08/15/2011] [Accepted: 08/17/2011] [Indexed: 02/02/2023]
Abstract
Nickel-chromium (Ni-Cr) alloys used in fixed prosthodontics have been associated with type IV Ni-induced hypersensitivity. We hypothesised that the full-thickness human-derived oral mucosa model employed for biocompatibility testing of base-metal dental alloys would provide insights into the mechanisms of Ni-induced toxicity. Primary oral keratinocytes and gingival fibroblasts were seeded onto Alloderm™ and maintained until full thickness was achieved prior to Ni-Cr and cobalt-chromium (Co-Cr) alloy disc exposure (2-72 h). Biocompatibility assessment involved histological analyses with cell viability measurements, oxidative stress responses, inflammatory cytokine expression and cellular toxicity analyses. Inductively coupled plasma mass spectrometry analysis determined elemental ion release levels. We detected adverse morphology with significant reductions in cell viability, significant increases in oxidative stress, inflammatory cytokine expression and cellular toxicity for the Ni-Cr alloy-treated oral mucosal models compared with untreated oral mucosal models, and adverse effects were increased for the Ni-Cr alloy that leached the most Ni. Co-Cr demonstrated significantly enhanced biocompatibility compared with Ni-Cr alloy-treated oral mucosal models. The human-derived full-thickness oral mucosal model discriminated between dental alloys and provided insights into the mechanisms of Ni-induced toxicity, highlighting potential clinical relevance.
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Louise McGinley E, Coleman DC, Moran GP, Fleming GJ. Effects of surface finishing conditions on the biocompatibility of a nickel–chromium dental casting alloy. Dent Mater 2011; 27:637-50. [DOI: 10.1016/j.dental.2011.03.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Revised: 03/23/2011] [Accepted: 03/28/2011] [Indexed: 10/18/2022]
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48
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Johansson K, Kerosuo H, Lammintausta K. Nickel sensitization in orthodontically treated and non-treated female adolescents. Contact Dermatitis 2011; 64:132-7. [DOI: 10.1111/j.1600-0536.2010.01840.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Szustakiewicz B, Djerbi N, Gondy A, Derki M, Devulder-Salana A, Pindi G, Rakotomalala H, Sergent O, Swead M, Tronet J. [Behavior of materials in the oral environment]. Orthod Fr 2009; 80:99-135. [PMID: 19327280 DOI: 10.1051/orthodfr/2009001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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50
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Localised corrosion. Br Dent J 2008; 205:221-3; author reply 223. [DOI: 10.1038/sj.bdj.2008.745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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