Release of nickel and chromium ions from orthodontic wires following the use of teeth whitening mouthwashes

Mirhashemi, Amir Hossein; Jahangiri, Sahar; Kharrazifard, MohammadJavad

doi:10.1186/s40510-018-0203-7

Cited by 26 publications

(27 citation statements)

References 28 publications

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“…Several studies have investigated the effects of the environmental conditions on the corrosion of alloys used in dental prostheses. 14 The alloys intended for intraoral use should be resistant to corrosion and chemical degradation. 15 The alloys utilized in the oral cavity have been reported to leach heavy metals in the saliva under normal conditions.…”

Section: Discussionmentioning

confidence: 99%

Nickel ion release from dental alloys in two different mouthwashes

Jafari

Rahimzadeh

Hekmatfar

2019

J Dent Res Dent Clin Dent Prospects

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Background. Mouthwashes are widely used as adjuncts to mechanical oral hygiene procedures. Nonetheless, there is little information regarding the effect of various mouthwashes on the amount of ions released from the nickel-chromium (Ni‒Cr) alloys used in the fabrication of fixed prostheses. Therefore, the present study was conducted to evaluate the effect of two types of mouthwash on the release of Ni ions from dental alloys. Methods. Forty-two disk-shaped specimens were prepared with a diameter of 10 mm and a height of 2 mm. Two mouthwashes were examined in this study: Oral B and Listerine. A control group was also considered using distilled water. Each Ni‒Cr disk was immersed in the mouthwashes and distilled water in polypropylene test tubes, and then incubated at 37°C to simulate the oral temperature. After 45 days of incubation, the samples were tested for Ni ions using inductively coupled plasma mass spectroscopy. Data were analyzed using ANOVA. Results. In the Halita group subjects exhibited 2.04±0.65 reduction in OLS. OLS reduction in the chlorhexidine group was 1.95±0.74. Statistical analysis showed no significant difference between the two groups (P>0.05). Conclusion. As the results indicated, the amount of ion release was within the safe limits in the two experimental groups. However, it is recommended that prescribe Listerine mouthwash should not be prescribed for the patients with a history of Ni allergy.

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Section: Discussionmentioning

confidence: 99%

Nickel ion release from dental alloys in two different mouthwashes

Jafari

Rahimzadeh

Hekmatfar

2019

J Dent Res Dent Clin Dent Prospects

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“…[3] Ion release can also cause discoloration of the adjacent soft tissues, allergic reactions, or pain. [4]…”

Section: Introductionmentioning

confidence: 99%

In vivo study on the release of nickel, chromium, and zinc in saliva and serum from patients treated with fixed orthodontic appliances

Quadras¹,

Nayak

Kumari

et al. 2019

Dent Res J

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Background: Fixed orthodontic appliances can release metal ions such as nickel, chromium, and zinc into saliva and blood, which can cause contact dermatitis, hypersensitivity, and cytotoxicity. This study was undertaken to assess the release of nickel, chromium, and zinc in saliva and serum of patients undergoing fixed orthodontic treatment. Materials and Methods: This in vivo study was conducted on 80 participants with an age range of 15–40 years. Thirty were included as controls and 50 participants were treated with fixed orthodontic appliances. Saliva and blood samples were collected at five different periods, before insertion of fixed orthodontic appliance and at 1 week, 3 months, 1 year, and 1.5 years after insertion of appliance, respectively. The metal ion content in the samples were analyzed by atomic absorption spectrophotometry. Mean levels of nickel, chromium, and zinc in saliva and serum were compared between groups using independent sample t -test and before and after results using paired t -test. P < 0.05 was considered as statistically significant. Results: At the end of 1.5 years, the mean salivary levels of nickel, chromium, and zinc in controls were 5.02 ppb, 1.27 ppb, and 10.24 ppb, respectively, as compared to 67 ppb, 30.8 ppb, and 164.7 ppb at the end of 1.5 years. This was statistically significant with P < 0.001. A significant increase in the metal ion levels were seen in participants with before and after insertion of appliance ( P < 0.001). Conclusion: Orthodontic appliances do release considerable amounts of metal ions such as nickel, chromium, and zinc in saliva and serum. However, it was within permissible levels and did not reach toxic levels.

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“…As a result, more metal ions undergo oxidation which speeds up the corrosion pro cess, resulting in the release of nickel ions. 1,4,[22][23][24] NiTi arch wire has a titanium element which will form a thin passive layer in the form of a layer of TiO2 on the wire surface. This passive layer serves to protect NiTi arch wire from corrosion process, but if there is a damage to the passive layer it will cause the release of nickel ions on the surface (especially TiO2) of NiTi arch wire.…”

Section: Resultsmentioning

confidence: 99%

Differences in nickel ions released from nickel-titanium arch wire after immersion in detergent and non-detergent toothpaste

Lubis

Harahap

Lubis

2021

Majalah Kedokteran Gigi Indonesia

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Nickel-titanium (NiTi) arch wire has properties that favor its use during the leveling and aligning phase of orthodontic treatment. This NiTi orthodontic arch wire has the potential to experience nickel ion release. One factor that can cause the release of nickel ions is toothpaste. Nickel ions released can enter the body and cause carcinogenic, mutagenic, cytotoxic, and allergic effects. The purpose of this study was to see the differences of nickel ions released from NiTi orthodontic arch wire after immersion in detergent and non-detergent toothpaste. This was a laboratory experimental research to draft a comparative design. The sample size was 40 pieces of NiTi orthodontic arch wire which were divided into 2 groups, immersion in detergent toothpaste and immersion in non-detergent toothpaste. The sample used was NiTi arch wire solution immersed in toothpaste and distilled water for 24 hours in an incubator at 37 °C then measured using inductively coupled plasma (ICP) mass spectrometer to determine the released nickel ions. Data were analyzed usingMann-Whitney test. The Mann-Whitney test resulted in a value of 0.872 (p≥0.05) which indicates no significant difference between the two groups. The study concluded that there is no difference in the nickel ions released from NiTi orthodonticarchwire after immersion in detergent and non-detergent toothpaste.

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Release of nickel and chromium ions from orthodontic wires following the use of teeth whitening mouthwashes

Cited by 26 publications

References 28 publications

Nickel ion release from dental alloys in two different mouthwashes

Nickel ion release from dental alloys in two different mouthwashes

In vivo study on the release of nickel, chromium, and zinc in saliva and serum from patients treated with fixed orthodontic appliances

Differences in nickel ions released from nickel-titanium arch wire after immersion in detergent and non-detergent toothpaste

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