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. 2013 Oct;25(4):129-33.
doi: 10.1016/j.sdentj.2013.10.001. Epub 2013 Oct 19.

Nickel and chromium levels in the saliva of a Saudi sample treated with fixed orthodontic appliances

Nabeel F Talic  1 , Hasan H Alnahwi  2 , Ali S Al-Faraj  3
Affiliations

Nickel and chromium levels in the saliva of a Saudi sample treated with fixed orthodontic appliances

Nabeel F Talic et al. Saudi Dent J. 2013 Oct.

Abstract

Aim: The aim of this study was to measure the amount of nickel (Ni) and chromium (Cr) released into the saliva of Saudi patients treated with fixed orthodontic appliances.

Materials and methods: Ninety salivary samples were collected in a cross-sectional manner. Forty samples were collected from patients (17 males, 23 females) with fixed orthodontic appliances after different periods of orthodontic treatment ranging from the first month and up to 32 months into treatment. The fixed orthodontic appliance consisted of 4 bands, 20 stainless steel brackets, and upper and lower nickel titanium or stainless-steel arch wires. The other 50 samples were collected from people without appliances (24 males, 26 females). Samples were analyzed using Inductive Coupled Plasma/Mass Spectrometry and Inductively Coupled Plasma Optical Emission Spectroscopy to measure Ni and Cr levels, respectively. Student's t-test was used to compare Ni and Cr levels in the treated and untreated control groups.

Results: The mean Ni level was 4.197 μg/L in the experimental group and 2.3 μg/L in the control group (p < 0.05). The mean Cr level was 2.9 μg/L in the experimental group and 3.3 μg/L in the control group (p < 0.05).

Conclusion: Fixed orthodontic appliances resulted in a non-toxic increase in salivary levels of Ni, but no change in Cr levels. Duration of orthodontic treatment did not affect Ni and Cr levels in the saliva.

Keywords: Chromium; Fixed orthodontic appliance; Nickel; Saliva.

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Figures

Fig. 1
Fig. 1
Mean and standard deviation of Ni and Cr levels among experimental and control groups.
Fig. 2
Fig. 2
Mean and standard deviation of Ni and Cr among male groups.
Fig. 3
Fig. 3
Mean and standard deviation of Ni and Cr among female groups.
Fig. 4
Fig. 4
Mean Ni and Cr levels after different periods of treatment.
None
See this image and copyright information in PMC

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