Nickel: humoral and periodontal changes in orthodontic patients

Marques, Leandro Silva; Pazzini, Camila Alessandra; Pantuzo, Mariele Cristina Garcia

doi:10.1590/s2176-94512012000200002

Cited by 9 publications

(9 citation statements)

References 12 publications

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“…There is evidence in the scientific literature to support the fact that Ni has carcinogenic, mutagenic, and cytotoxic effects in cell cultures [1,22,23,27]. These findings should be interpreted with caution, because documented toxicities generally apply to the soluble forms of these elements.…”

Section: Discussionmentioning

confidence: 99%

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Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study

et al. 2022

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Fluoride-based mouthwashes and gels are preventive measures in countering demineralization and caries but, modifying environmental acidity, can reduce the wet corrosion resistance of orthodontic alloys. To evaluate chemical stability, in vitro experiments were conducted on stainless steel and nickel–titanium wires, weighed before and after immersion in household fluorinated mouthwashes and gels, measuring weight variations and elution of metal ions from acid corrosion phenomena. Elution samples were analyzed by inductively coupled plasma mass spectrometry, detecting residual ion concentration, while surface changes were analyzed under scanning electron microscopy. Results showed stainless steel wires do not undergo significant erosion when exposed to most fluorinated mouthwashes but, at prolonged exposure, alloys elute gradually greater amounts of metals and Ni–Ti wires become more sensitive to some mouthwashes. Ions’ elution varies considerably, especially for Ni–Ti wires, if exposed to household fluorinated gels, for which significant negative values were obtained. Changes, affecting wires’ outer layer, negatively act on shiny appearance and luster, reducing corrosion resistance. Although examined orthodontic wires showed good chemical stability and low toxicity, surface corrosion from exposure to fluorinated agents was observed. Home use must be accompanied by clinician prescription and, for household dental gels, must follow manufacturers’ recommendations, ensuring prophylactic action without damaging alloys surfaces.

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Section: Discussionmentioning

confidence: 99%

“…Cr is second in frequency. In fact, extra oral adverse reactions are much more common than intraoral ones and allergic skin reactions are also difficult to distinguish from irritative lesions [27].…”

Section: Discussionmentioning

confidence: 99%

Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study

et al. 2022

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“…Cr is second in frequency. In fact, extra oral adverse reactions are much more common than intraoral ones and allergic skin reactions are also di cult to distinguish from irritative lesions [23].…”

Section: Discussionmentioning

confidence: 99%

“…There are many published studies on the corrosion resistance of Ni-Ti alloys in physiological solutions [7,17,23,24].…”

Section: Discussionmentioning

confidence: 99%

Fluorinated Agents Effects on Orthodontic Alloys: An In Vitro Study

Condò

Mampieri

Cioffi

et al. 2021

Preprint

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Background In fixed orthodontics, fluoride-based mouthwashes and gels are effective preventive oral devices in counteracting demineralisations and dental caries onset but, modifying environmental acidity, they can reduce the resistance to wet corrosion of orthodontic alloys. Methods To evaluate the effective chemical stability of these products, a series of in vitro experiments were performed on thirty-two preformed rectangular orthodontic wires, (twenty-four in stainless steel and eight in nickel-titanium), cut in sections, obtaining ninety-six samples. They were weighed before and after immersion in five mouthwashes and two fluorinated dental gel, at three time-points, to measure weight variations and metal ions elution by acid corrosion phenomena. Elution samples, including control group of normal saline, were analysed by inductively coupled plasma mass spectrometry, to detect metal ions residual concentration. Results Minimal variations in loss from initial weight were recorded. Metallic ions release was quantified, at all time-points, for all wires and it was considered in correlation with alloys composition, pH and Fluor concentration of mouthwashes and gels, and time-exposition. Conclusions Acidic pH substances, like fluorinated agents and normal saline considered, cause metal ions dissolution from orthodontic wires. Dissolution depended by chemical nature of the elements, alloys composition, and Fluor concentration in mouthwashes and gels. This study helps in proposing timing and methods for the usage of fluorinated agents to guarantee the prophylactic action without damaging orthodontic alloys superficial structure.

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“…10 Hal ini didukung oleh Marques (2017) yang menyatakan bahwa nikel dapat meningkatkan perubahan jaringan periodontal pada pasien yang alergi dan nikel berperan sebagai aggravating factor. 11 Perawatan pembesaran gingiva didasarkan pada penyebab dan perubahan patologis. Etiologi pembesaran gingiva berbeda sehingga perawatan yang terbaik didasarkan pada pertimbangan kasus yang bersifat individual.…”

Section: Pembahasanunclassified

GINGIVEKTOMI PEMBESARAN GINGIVA PASIEN ORTODONTIK (Laporan Kasus)

Sopiatin

Komara

Hendiani

et al. 2023

cakradonya dental j.

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Pembesaran gingiva merupakan keadaan yang sering dijumpai pada pasien yang sedang menggunakan piranti ortodonti cekat. Pada pasien tertentu, penggunaan piranti ortodonti cekat dapat memicu terjadinya pembesaran gingiva yang dapat menyulitkan pemeliharaan kebersihan mulut sehingga menimbulkan terjadinya inflamasi gingiva serta mengganggu fungsi estetik. Pasien wanita usia 18 tahun datang ke Klinik Periodonsia Rumah Sakit Gigi dan Mulut Universitas Padjadjaran dengan keluhan utama gingiva membesar pada seluruh regio rahang bawah sejak ± 1 tahun yang lalu, tidak ada riwayat mengecil, dan tidak terasa sakit. Pada saat pemeriksaan intra oral, gusi rahang atas juga terlihat menutupi sebagian permukaan gigi meskipun tidak tampak membengkak, tetapi menyebabkan gigi terlihat lebih pendek. Pasien menggunakan piranti ortodonti cekat sejak ± 3 tahun yang lalu. Gingivektomi efektif dalam mengatasi pembesaran gingiva pada pasien yang sedang menggunakan piranti ortodonti cekat. Terapi tersebut bertujuan untuk menghilangkan poket gingiva, mencegah inflamasi dan penyakit periodontal tahap lanjut, serta mengembalikan fungsi estetik.

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Nickel: humoral and periodontal changes in orthodontic patients

Cited by 9 publications

References 12 publications

Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study

Fluorinated Agents Effects on Orthodontic Alloys: A Descriptive In Vitro Study

Fluorinated Agents Effects on Orthodontic Alloys: An In Vitro Study

GINGIVEKTOMI PEMBESARAN GINGIVA PASIEN ORTODONTIK (Laporan Kasus)

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