Introduction: The purpose of this study was to examine whether nickel-titanium (Ni-Ti) archwires cause an increase of nickel concentration in the saliva of 18 orthodontic patients to estimate the possible risk of these archwires in patients who have nickel hypersensitivity.
Methods: Saliva samples were collected before orthodontic treatment, after placement of the bands and brackets, 2 weeks later and before placing the Ni-Ti archwires, immediately after placing the Ni-Ti archwires, 4 weeks after placing the wires, and 8 weeks after placing the wires.
Results: By using mass spectrometry, no statistically significant differences were found in the nickel concentrations in the samples taken without appliances, in those obtained 2 weeks after placement of the bands and brackets, and 4 and 8 weeks after placement of the archwires. Samples taken immediately after placement of the bands and brackets and the Ni-Ti archwires showed slight but significant increases in nickel concentration of 78 and 56 microg per liter, respectively, compared with the pretreatment value of 34 microg per liter.
Conclusions: Nickel leaching occurred after placement of the bands and brackets and after placement of the Ni-Ti archwires, associated with an increase of the nickel ion concentration in the patient's saliva. This effect decreased within 10 weeks.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ajodo.2006.12.018 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Dynamic Reconstruction of the Nickel Ions' Behavior in Different Orthodontic Archwires Following Clinical Application in an Intraoral Environment.
Materials (Basel)
December 2024
G. Nadjakov Institute of Solid-State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee, 1784 Sofia, Bulgaria.
: Orthodontic archwires undergo chemical and structural changes in the complex intraoral environment. The present work aims to investigate the safe duration for intraoral use (related to the nickel release hypothesis) of different types of nickel-containing wires. By analyzing how the nickel content (NC) varies over time, we aim to provide practical recommendations for the optimal use of said archwires.
View Article and Find Full Text PDFEffect of 850 nm LED irradiation on the alignment of crowded mandibular anterior teeth: a randomized controlled clinical trial.
Clin Oral Investig
December 2024
Department of Orthodontics, Faculty of Dentistry, Kurdistan University of Medical Sciences, Sanandaj, Iran.
Introduction: This study aims to determine if intraoral 850 nm LED irradiation could reduce the duration of lower anterior crowding alignment.
Methods: In a parallel-designed, randomized controlled clinical trial 60 patients with 2 to 6 mm of lower incisor crowding who need non-extraction treatment, were randomly assigned to the intervention and control groups by block randomization (36 females, 24 males, mean age: 19.93 ± 3.
[Is Copper Ni-Ti more effective than conventional Ni-Ti in terms of rapid tooth alignment and mandibular arch expansion? A double-blind randomized clinical trial].
Orthod Fr
November 2024
Département d’Orthodontie, Faculté de Médecine dentaire, Université Saint-Joseph, 650 rue de Damas, B.P. 11-5076 Riad El Solh, Beyrouth, Liban
Article Synopsis
- Initial archwires, specifically Nickel-titanium (Ni-Ti), are essential in orthodontic treatment for resolving crowding and correcting tooth rotations with light forces.
- The study aimed to compare the effectiveness of Copper Ni-Ti 35°C archwires against conventional Ni-Ti archwires in dental alignment and the maintenance of the mandibular arch form.
- Results indicated no significant difference between the two types of archwires in resolving crowding or maintaining mandibular arch dimensions, suggesting that Copper Ni-Ti 35°C performs similarly to conventional Ni-Ti.
The Effect of Three Metal Oxide Nanocoatings on the Frictional Resistance of Superelastic Orthodontic Archwires: A Comprehensive Analysis.
J Contemp Dent Pract
July 2024
Department of Oral Pathology, SRM Dental College, Chennai, Tamil Nadu, India, Phone: +91 9500058376, e-mail:
Aim And Objective: To evaluate and compare the impact of nanocoatings made of oxides of Aluminum, Titanium, and Zirconium, on the frictional resistance on three types of superelastic orthodontics archwires namely; nickel titanium, copper nickel titanium and low hysteresis nickel titanium.
Materials And Methods: There are120 archwire segments of equal dimensions were divided into four groups ( = 30) with 10 samples each of low hysteresis superelastic archwires; NiTi archwires and CuNiTi archwires. While group A were uncoated, other groups were nanocoated with group B: Aluminum oxide; group C: Titanium dioxide; group D: Zirconium oxide respectively.
The effect of autoclave cycles on the mechanical properties and surface roughness of NiTi archwires: ex-vivo study.
BMC Oral Health
October 2024
Lecturer at the Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Cairo University, Cairo, Egypt.
Objectives: To evaluate the effect of the universal and rapid autoclave cycles on the mechanical properties and surface roughness of nickel-titanium archwires following clinical use.
Material And Methods: Thirty-six NiTi archwires (0.016 × 0.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!